WO2022109600A1 - Systèmes d'éclairage générant des émissions de lumière visible pour émuler de manière dynamique les couleurs du ciel - Google Patents

Systèmes d'éclairage générant des émissions de lumière visible pour émuler de manière dynamique les couleurs du ciel Download PDF

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Publication number
WO2022109600A1
WO2022109600A1 PCT/US2021/072512 US2021072512W WO2022109600A1 WO 2022109600 A1 WO2022109600 A1 WO 2022109600A1 US 2021072512 W US2021072512 W US 2021072512W WO 2022109600 A1 WO2022109600 A1 WO 2022109600A1
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WO
WIPO (PCT)
Prior art keywords
light
visible
lighting system
emissions
examples
Prior art date
Application number
PCT/US2021/072512
Other languages
English (en)
Inventor
Paul Pickard
Raghuram L. V. Petluri
Original Assignee
Ecosense Lighting Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/100,666 external-priority patent/US11635188B2/en
Application filed by Ecosense Lighting Inc. filed Critical Ecosense Lighting Inc.
Priority to DE112021006068.6T priority Critical patent/DE112021006068T5/de
Publication of WO2022109600A1 publication Critical patent/WO2022109600A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/006—Solar simulators, e.g. for testing photovoltaic panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like

Definitions

  • the present invention relates to the field of lighting systems for generating visible-light emissions.
  • a lighting system includes a visible-light source, an optical system, a mounting system, and a control system.
  • the visible-light source includes a plurality of semiconductor light-emitting devices.
  • the visible-light source in the example of the lighting system selectably generates visible- light emissions having a cyan-ish color point, and selectably generates the visible-light emissions as having an orange-ish color point.
  • the optical system in the example of the lighting system is integrated with the visible-light source.
  • the optical system is arranged to combine together, into combined light emissions, visible-light emissions from semiconductor light-emitting devices among the plurality of the semiconductor light-emitting devices.
  • the mounting system in the example of the lighting system is integrated with the visible- light source, and the mounting system is arranged for directing the combined light emissions as being up-light emissions.
  • the control system is coupled with the visible-light source.
  • the control system in the example of the lighting system selectably causes the visible-light emissions to have a cyan-ish color point or an orange-ish color point.
  • the control system and the optical system cooperatively form the combined up-light emissions as having a dynamic spectrum for emulating an orange-ish sky color at a time of day selected to represent a sunrise sky or to represent a sunset sky, and changing over time for emulating a cyan-ish sky color at another time of day selected to represent a mid-day sky.
  • control system may be configured for causing the visible-light emissions to have the orange-ish color point as emulating the sunrise sky at an emulated sunrise or as emulating the sunset sky at an emulated sunset, and for causing the visible-light emissions to have the cyan-ish color point as emulating the mid-day sky at an emulated mid-day.
  • control system may be configured for causing the visible-light source to selectably generate the visible-light emissions having the cyan- ish color point as further having a relatively greater level of input power at an emulated mid-day and as additionally having a relatively lesser level of input power at an emulated sunrise or at an emulated sunset.
  • control system may be configured for causing the visible-light source to selectably generate the visible-light emissions having the orange-ish color point as further having a relatively lesser level of input power at an emulated midday and as additionally having a relatively greater level of input power at an emulated sunrise or at an emulated sunset.
  • the plurality of the semiconductor lightemitting devices may include a lumiphor configured for down-converting visible-light emissions of a one of the semiconductor light-emitting devices having a first dominant wavelength into further visible-light emissions having a second dominant wavelength being less than the first dominant wavelength to generate the cyan-ish color point.
  • the plurality of the semiconductor lightemitting devices may include three semiconductor light-emitting devices being mutually spaced apart by the visible-light source in a linear array, and the control system may separately provide input power for driving each one of the three of the semiconductor light-emitting devices.
  • the plurality of the semiconductor lightemitting devices may include three elongated strings each including a plurality of the semiconductor light-emitting devices, the three elongated strings being mutually spaced apart by the visible-light source as each respectively including one of three linear arrays, and the control system may separately provide input power for driving each one of the three elongated strings of the semiconductor light-emitting devices.
  • the lighting system may include a further visible-light source including a further plurality of semiconductor light-emitting devices, the further visible-light source generating further visible-light emissions.
  • the lighting system may include a further optical system being integrated with the further visible-light source, the further optical system being arranged to combine together, into further combined light emissions, the further visible-light emissions from semiconductor light-emitting devices among the further plurality of the semiconductor light-emitting devices.
  • the lighting system may include a further control system being coupled with the further visible-light source.
  • the lighting system may include a further mounting system being integrated with the further visible-light source, the further mounting system being arranged for directing the further combined light emissions as being downlight emissions.
  • the further visible-light source may be adapted to selectively generate warm white light and cool white light.
  • the further control system and the further optical system may cooperatively form the further combined downlight emissions as having another dynamic spectrum including a warm to very warm white color point for emulating the sunrise sky or for emulating the sunset sky, and including a cool to very cool white color point for emulating the mid-day sky.
  • the further control system may cause the further visible-light source to dynamically change the combined downlight emissions from warm white light to cool white light in coordination with the combined up-light emissions as changing over time between emulating the sunrise or sunset sky and emulating the mid-day sky.
  • the further control system may be for causing the combined downlight emissions of the further plurality of the semiconductor light-emitting devices to have the warm white color point with a correlated color temperature (CCT) as being within a range of between about 1800K and about 3500K at the emulated sunrise sky or at the emulated sunset sky.
  • CCT correlated color temperature
  • the further control system may be for causing the combined downlight emissions of the further plurality of the semiconductor light-emitting devices to have the cool white color point with a correlated color temperature (CCT) as being within a range of between about 3500K and about 10000K at the emulated midday sky.
  • CCT correlated color temperature
  • the further plurality of the semiconductor light-emitting devices may include three further semiconductor light-emitting devices being mutually spaced apart by the further visible-light source in a further linear array, and the further control system may separately provide input power for driving each one of the three of the further semiconductor light-emitting devices for respectively producing distributions of the further visible-light emissions as being left wall wash, center wall graze, and right wall wash.
  • the further control system may includes a plurality of selectable pre-set input power distributions defining levels of relative input power for each one of the three of the further semiconductor light-emitting devices.
  • the further plurality of the semiconductor light-emitting devices may include three elongated strings each including a plurality of the semiconductor light-emitting devices, the three elongated strings being mutually spaced apart by the further visible-light source as each respectively including one of three linear arrays, and the further control system may separately provide input power for driving each one of the three elongated strings of the semiconductor light-emitting devices.
  • the further control system may separately provide the input power for driving each one of the three elongated strings of the semiconductor light-emitting devices for respectively producing distributions of the further visible- light emissions as being left wall wash, center wall graze, and right wall wash.
  • the further control system may include a plurality of selectable pre-set input power distributions defining further levels of relative input power for each one of the three of the elongated strings of the further semiconductor light-emitting devices.
  • the further control system may include, among the plurality of the selectable pre-set input power distributions: wall graze; table lighter with wall fill; wall wash right; wall wash left; double wall wash; wall wash right plus floor; wall wash left plus floor; low glare room lighter; or low glare quasi-batwing.
  • the further control system may separately provide the input power for driving each one of the three elongated strings of the semiconductor light-emitting devices for producing the pre-set input power distributions of the further visible-light emissions for mimicking movement of the sun across the sky to affect circadian rhythms, by progressing over time from being: left wall wash at an emulated sunrise; to center wall graze at an emulated midday; to right wall wash at an emulated sunset.
  • FIG. 1 is a schematic top perspective view showing an example [100] of an implementation of a lighting system.
  • Fig. 2 is a schematic cross-sectional view taken along the line 2-2 showing the example [100] of the lighting system.
  • Fig. 3 is a schematic cross-sectional view taken along the line 3-3 showing the example [100] of the lighting system.
  • Fig. 4 is a schematic bottom perspective view taken along the line 4 showing the example [100] of an implementation of a lighting system.
  • FIG. 5 is a schematic top perspective view showing an example [500] of an implementation of a lighting system.
  • Fig. 6 is a schematic cross-sectional view taken along the line 6-6 showing the example [500] of the lighting system.
  • Fig. 7 is a schematic cross-sectional view taken along the line 7-7 showing the example [500] of the lighting system.
  • Fig. 8 is a schematic bottom perspective view taken along the line 8 showing the example [500] of an implementation of a lighting system.
  • Fig. 9 is a schematic top perspective view showing an example [900] of an implementation of a lighting system.
  • Fig. 10 is a schematic cross-sectional view taken along the line 10-10 showing the example [900] of the lighting system.
  • Fig. 11 is a schematic cross-sectional view taken along the line 11-11 showing the example [900] of the lighting system.
  • Fig. 12 is a schematic bottom perspective view taken along the line 12 showing the example [900] of an implementation of a lighting system.
  • Fig. 13 is a schematic top perspective view showing an example [1300] of an implementation of a lighting system.
  • Fig. 14 is a schematic cross-sectional view taken along the line 14-14 showing the example [1300] of the lighting system.
  • Fig. 15 is a schematic cross-sectional view taken along the line 15-15 showing the example [1300] of the lighting system.
  • Fig. 16 is a schematic bottom perspective view taken along the line 16 showing the example [1300] of an implementation of a lighting system.
  • Fig. 17 is a schematic diagram of an example [1700] of a lighting controller.
  • Fig. 18 is a schematic bottom perspective view showing an example [1800] of a lighting system together with which the example [1700] of the lighting controller may be utilized.
  • Fig. 19 is a schematic cross-sectional view taken along the line 19-19 showing the example [1800] of the lighting system together with which the example [1700] of the lighting controller may be utilized.
  • Fig. 20 is a schematic cross-sectional view taken along the line 20-20 showing the example [1800] of the lighting system together with which the example [1700] of the lighting controller may be utilized.
  • Fig. 21 is a schematic top perspective view taken along the line 21 showing the example [1800] of an implementation of a lighting system together with which the example [1700] of the lighting controller may be utilized.
  • Fig. 22 is a schematic diagram of an example [2200] of a lighting controller.
  • Fig. 23 is a schematic bottom perspective view showing an example [2300] of an implementation of a lighting system together with which the example [2200] of the lighting controller may be utilized.
  • Fig. 24 is a schematic cross-sectional view taken along the line 24-24 showing the example [2300] of the lighting system together with which the example [2200] of the lighting controller may be utilized.
  • Fig. 25 is a schematic cross-sectional view taken along the line 25-25 showing the example [2300] of the lighting system together with which the example [2200] of the lighting controller may be utilized.
  • Fig. 26 is a schematic top perspective view taken along the line 26 showing the example [2300] of an implementation of a lighting system together with which the example [2200] of the lighting controller may be utilized.
  • Fig. 27 is a schematic diagram of an example [2700] of a lighting controller.
  • Fig. 28 is a schematic bottom perspective view showing an example [2800] of an implementation of a lighting system together with which the example [2700] of the lighting controller may be utilized.
  • Fig. 29 is a schematic cross-sectional view taken along the line 29-29 showing the example [2800] of the lighting system together with which the example [2700] of the lighting controller may be utilized.
  • Fig. 30 is a schematic cross-sectional view taken along the line 30-30 showing the example [2800] of the lighting system together with which the example [2700] of the lighting controller may be utilized.
  • Fig. 31 is a schematic top perspective view taken along the line 31 showing the example [2800] of an implementation of a lighting system together with which the example [2700] of the lighting controller may be utilized.
  • Fig. 32 is a schematic diagram of an example [3200] of a lighting controller, being utilized together with the lighting system [100] discussed earlier in connection with Figs. 1-4.
  • Fig. 33 is a schematic diagram of an example [3300] of a lighting controller, being utilized together with the lighting system [900] discussed earlier in connection with Figs. 9-12.
  • Fig. 34 is a flow chart of an example [3400] of a lighting control method that may be carried out, as an example, utilizing the lighting controller [1700] discussed earlier in connection with Figs. 17-21.
  • Fig. 35 is a flow chart of an example [3500] of a lighting control method that may be carried out, as an example, utilizing the lighting controller [2200] discussed earlier in connection with Figs. 22-26.
  • Fig. 36 is a flow chart of an example [3600] of a lighting control method that may be carried out, as an example, utilizing the lighting controller [2700] discussed earlier in connection with Figs. 27-31.
  • Fig. 37 is a schematic bottom perspective view showing an example [3700] of an implementation of a lighting system.
  • Fig. 38 is a schematic cross-sectional view taken along the line 38-38 showing the example [3700] of the lighting system.
  • Fig. 39 is a schematic top perspective view taken along the line 39 showing the example [3700] of an implementation of a lighting system.
  • Fig. 40 is a schematic bottom perspective view showing an example [4000] of an implementation of a lighting system.
  • Fig. 41 is a schematic cross-sectional view taken along the line 41-41 showing the example [4000] of the lighting system.
  • Fig. 42 is a schematic top perspective view taken along the line 42 showing the example [4000] of an implementation of a lighting system.
  • Examples of implementations of lighting systems accordingly are provided herein, that include a visible-light source, an optical system, a mounting system, and a control system.
  • the visible-light source includes a plurality of semiconductor light-emitting devices.
  • the visible-light source in the examples of the lighting system selectably generates visible-light emissions having a cyan-ish color point, and selectably generates the visible-light emissions as having an orange-ish color point.
  • the optical system in the examples of the lighting system is integrated with the visible-light source.
  • the optical system is arranged to combine together, into combined light emissions, visible- light emissions from semiconductor light-emitting devices among the plurality of the semiconductor light-emitting devices.
  • the mounting system in the examples of the lighting system is integrated with the visible-light source, and the mounting system is arranged for directing the combined light emissions as being up-light emissions.
  • the control system is coupled with the visible-light source.
  • the control system in the examples of the lighting system selectably causes the visible-light emissions to have a cyan-ish color point or an orange-ish color point.
  • the control system and the optical system cooperatively form the combined up-light emissions as having a dynamic spectrum for emulating an orange-ish sky color at a time of day selected to represent a sunrise sky or to represent a sunset sky, and changing over time for emulating a cyan-ish sky color at another time of day selected to represent a mid-day sky.
  • semiconductor means: a substance, examples including a solid chemical element or compound, that can conduct electricity under some conditions but not others, making the substance a good medium for the control of electrical current.
  • semiconductor light-emitting device also being abbreviated as “SLED” means: a light-emitting diode; an organic light-emitting diode; a laser diode; or any other light-emitting device having one or more layers containing inorganic and/or organic semiconductor(s).
  • an LED means: a two-lead semiconductor light source having an active pn-junction.
  • an LED may include a series of semiconductor layers that may be epitaxially grown on a substrate such as, for example, a substrate that includes sapphire, silicon, silicon carbide, gallium nitride or gallium arsenide. Further, for example, one or more semiconductor p-n junctions may be formed in these epitaxial layers. When a sufficient voltage is applied across the p-n junction, for example, electrons in the n-type semiconductor layers and holes in the p-type semiconductor layers may flow toward the p-n junction.
  • an LED may have a light-emissive electroluminescent layer including an inorganic semiconductor, such as a Group III-V semiconductor, examples including: gallium nitride; silicon; silicon carbide; and zinc oxide.
  • organic light-emitting diode means: an LED having a light-emissive electroluminescent layer including an organic semiconductor, such as small organic molecules or an organic polymer.
  • a semiconductor light-emitting device may include: a non-semiconductor-substrate or a semiconductor-substrate; and may include one or more electrically-conductive contact layers.
  • an LED may include a substrate formed of materials such as, for example: silicon carbide; sapphire; gallium nitride; or silicon. It is additionally understood throughout this specification that a semiconductor light-emitting device may have a cathode contact on one side and an anode contact on an opposite side, or may alternatively have both contacts on the same side of the device.
  • the term “spectral power distribution” means: the emission spectrum of the one or more wavelengths of light emitted by a semiconductor lightemitting device.
  • peak wavelength means: the wavelength where the spectral power distribution of a semiconductor light-emitting device reaches its maximum value as detected by a photo-detector.
  • an LED may be a source of nearly monochromatic light and may appear to emit light having a single color.
  • the spectral power distribution of the light emitted by such an LED may be centered about its peak wavelength.
  • the “width” of the spectral power distribution of an LED may be within a range of between about 10 nanometers and about 30 nanometers, where the width is measured at half the maximum illumination on each side of the emission spectrum.
  • both of the terms “beam width” and “full-width-half- maximum” (“FWHM”) mean: the measured angle, being collectively defined by two mutually- opposed angular directions away from a center emission direction of a visible-light beam, at which an intensity of the visible-light emissions is half of a maximum intensity measured at the center emission direction.
  • FWHM full-width-half- maximum
  • beam width and “full-width-half-maximum” (“FWHM”) mean: the measured maximum and minimum angles, being respectively defined in two mutually-orthogonal pairs of mutually-opposed angular directions away from a center emission direction of a visible-light beam, at which a respective intensity of the visible-light emissions is half of a corresponding maximum intensity measured at the center emission direction.
  • field angle means: the measured angle, being collectively defined by two opposing angular directions away from a center emission direction of a visible-light beam, at which an intensity of the visible-light emissions is one-tenth of a maximum intensity measured at the center emission direction.
  • the term "field angle" means: the measured maximum and minimum angles, being respectively defined in two mutually-orthogonal pairs of mutually- opposed angular directions away from a center emission direction of a visible-light beam, at which a respective intensity of the visible-light emissions is one-tenth of a corresponding maximum intensity measured at the center emission direction.
  • the term “dominant wavelength” means: the wavelength of monochromatic light that has the same apparent color as the light emitted by a semiconductor light-emitting device, as perceived by the human eye.
  • the color perceived i.e., the dominant wavelength
  • the peak wavelength may differ from the peak wavelength.
  • the term “luminous flux”, also referred to as “luminous power”, means: the measure in lumens of the perceived power of light, being adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light.
  • the term “radiant flux” means: the measure of the total power of electromagnetic radiation without being so adjusted.
  • the term “intensity” denotes "luminous intensity”, being a measure of the wavelength-weighted power (luminous flux) emitted by a visible-light source in a particular direction per unit solid angle based on the standardized luminosity function of the sensitivity of human eyesight to various wavelengths of light.
  • central light-emission axis means a direction along which the light emissions of a semiconductor light-emitting device have a greatest radiant flux. It is understood throughout this specification that light emissions “along a central light-emission axis” means light emissions that: include light emissions in the direction of the central light-emission axis; and may further include light emissions in a plurality of other generally similar directions.
  • light emissions “along the longitudinal axis” means light emissions that: include light emissions in the directions of the longitudinal axis; and may further include light emissions in a plurality of other generally similar directions. It is understood throughout this specification that light emissions “in directions transverse to the longitudinal axis” means light emissions that: include light emissions in the directions being orthogonal to the longitudinal axis; and may further include light emissions in a plurality of other generally similar directions. It is understood throughout this specification that light emissions “in directions spaced apart from directions along the longitudinal axis” means light emissions in directions being similar to and spaced apart from the directions along the longitudinal axis. It is understood throughout this specification that light emissions “in directions spaced apart from directions transverse to the longitudinal axis” means light emissions in directions being similar to and spaced apart from the directions being transverse to the longitudinal axis.
  • color bin means: the designated empirical spectral power distribution and related characteristics of a particular semiconductor light-emitting device.
  • individual light-emitting diodes LEDs
  • a designated color bin i.e., “binned”
  • a particular LED may be binned based on the value of its peak wavelength, being a common metric to characterize the color aspect of the spectral power distribution of LEDs.
  • other metrics that may be utilized to bin LEDs include: dominant wavelength; and color point.
  • the term “luminescent” means: characterized by absorption of electromagnetic radiation (e.g., visible-light, UV light or infrared light) causing the emission of light by, as examples: fluorescence; and phosphorescence.
  • the term “object” means a material article or device.
  • the term “surface” means an exterior boundary of an object.
  • incident visible-light means visible-light that propagates in one or more directions towards a surface.
  • any incident angle means any one or more directions from which visible-light may propagate towards a surface.
  • reflective surface means a surface of an object that causes incident visible-light, upon reaching the surface, to then propagate in one or more different directions away from the surface without passing through the object.
  • the term “planar reflective surface” means a generally flat reflective surface.
  • the term “reflection value” means a percentage of a radiant flux of incident visible-light having a specified wavelength that is caused by a reflective surface of an object to propagate in one or more different directions away from the surface without passing through the object.
  • the term “reflected light” means the incident visible-light that is caused by a reflective surface to propagate in one or more different directions away from the surface without passing through the object.
  • the term “Lambertian reflection” means diffuse reflection of visible-light from a surface, in which the reflected light has uniform radiant flux in all of the propagation directions.
  • the term “specular reflection” means mirrorlike reflection of visible-light from a surface, in which light from a single incident direction is reflected into a single propagation direction.
  • the term “spectrum of reflection values” means a spectrum of values of percentages of radiant flux of incident visible- light, the values corresponding to a spectrum of wavelength values of visible-light, that are caused by a reflective surface to propagate in one or more different directions away from the surface without passing through the object.
  • transmission value means a percentage of a radiant flux of incident visible-light having a specified wavelength that is permitted by a reflective surface to pass through the object having the reflective surface.
  • the term “transmitted light” means the incident visible-light that is permitted by a reflective surface to pass through the object having the reflective surface.
  • the term “spectrum of transmission values” means a spectrum of values of percentages of radiant flux of incident visible-light, the values corresponding to a spectrum of wavelength values of visible-light, that are permitted by a reflective surface to pass through the object having the reflective surface.
  • the term “absorption value” means a percentage of a radiant flux of incident visible-light having a specified wavelength that is permitted by a reflective surface to pass through the reflective surface and is absorbed by the object having the reflective surface.
  • the term “spectrum of absorption values” means a spectrum of values of percentages of radiant flux of incident visible-light, the values corresponding to a spectrum of wavelength values of visible-light, that are permitted by a reflective surface to pass through the reflective surface and are absorbed by the object having the reflective surface.
  • a reflective surface, or an object may have a spectrum of reflection values, and a spectrum of transmission values, and a spectrum of absorption values.
  • the spectra of reflection values, absorption values, and transmission values of a reflective surface or of an object may be measured, for example, utilizing an ultraviolet - visible - near infrared (UV - VIS - NIR) spectrophotometer.
  • the term “visible-light reflector” means an object having a reflective surface. In examples, a visible-light reflector may be selected as having a reflective surface characterized by light reflections that are more Lambertian than specular.
  • the term "lightguide” means a visible-light - transmissive body having a boundary being subject to the condition that visible-light rays traveling within the body to reach the boundary at an angle of incidence a that is larger than the critical angle will be reflected by the boundary and remain within the body.
  • visible-light rays will be subject to total internal reflection ("TIR") and so remain within the body if their angle of incidence a at the boundary satisfies the following condition derived from Snell's Law: a >sin -1 (n2/ni) where ni is the refractive index of the body of the lightguide and is the refractive index of a medium outside the lightguide.
  • the medium outside a lightguide may be air, having a refractive index being about 1.
  • the medium outside of a lightguide may be another material having a lower refractive index than that of the body of the lightguide.
  • Lumiphor means: a medium that includes one or more luminescent materials being positioned to absorb light that is emitted at a first spectral power distribution by a semiconductor light-emitting device, and to re-emit light at a second spectral power distribution in the visible or ultra violet spectrum being different than the first spectral power distribution, regardless of the delay between absorption and re-emission.
  • Lumiphors may be categorized as being down-converting, i.e., a material that converts photons to a lower energy level (longer wavelength); or up-converting, i.e., a material that converts photons to a higher energy level (shorter wavelength).
  • a lumiphor may be configured for down-converting visible-light emissions of a semiconductor light-emitting device having a first dominant wavelength into further visible-light emissions having a second dominant wavelength being less than the first dominant wavelength.
  • a lumiphor may be configured for up-converting visible-light emissions of a semiconductor light-emitting device having a first dominant wavelength into further visible-light emissions having a second dominant wavelength being greater than the first dominant wavelength.
  • a luminescent material may include: a phosphor; a quantum dot; a quantum wire; a quantum well; a photonic nanocrystal; a semiconducting nanoparticle; a scintillator; a lumiphoric ink; a lumiphoric organic dye; a day glow tape; a phosphorescent material; or a fluorescent material.
  • quantum material means any luminescent material that includes: a quantum dot; a quantum wire; or a quantum well. Some quantum materials may absorb and emit light at spectral power distributions having narrow wavelength ranges, for example, wavelength ranges having spectral widths being within ranges of between about 25 nanometers and about 50 nanometers.
  • two or more different quantum materials may be included in a lumiphor, such that each of the quantum materials may have a spectral power distribution for light emissions that may not overlap with a spectral power distribution for light absorption of any of the one or more other quantum materials. In these examples, cross-absorption of light emissions among the quantum materials of the lumiphor may be minimized.
  • a lumiphor may include one or more layers or bodies that may contain one or more luminescent materials that each may be: (1) coated or sprayed directly onto an semiconductor light-emitting device; (2) coated or sprayed onto surfaces of a lens or other elements of packaging for an semiconductor light-emitting device; (3) dispersed in a matrix medium; or (4) included within a clear encapsulant (e.g., an epoxy-based or silicone-based curable resin or glass or ceramic) that may be positioned on or over an semiconductor light-emitting device.
  • a lumiphor may include one or multiple types of luminescent materials.
  • lumiphors may also be included with a lumiphor such as, for example, fillers, diffusants, colorants, or other materials that may as examples improve the performance of or reduce the overall cost of the lumiphor.
  • materials may, as examples, be mixed together in a single layer or deposited sequentially in successive layers.
  • volumetric lumiphor means a lumiphor being distributed in an object having a shape including defined exterior surfaces.
  • a volumetric lumiphor may be formed by dispersing a lumiphor in a volume of a matrix medium having suitable spectra of visible-light transmission values and visible-light absorption values. As examples, such spectra may be affected by a thickness of the volume of the matrix medium, and by a concentration of the lumiphor being distributed in the volume of the matrix medium.
  • the matrix medium may have a composition that includes polymers or oligomers of: a polycarbonate; a silicone; an acrylic; a glass; a polystyrene; or a polyester such as polyethylene terephthalate.
  • the term “remotely-located lumiphor” means a lumiphor being spaced apart at a distance from and positioned to receive light that is emitted by a semiconductor light-emitting device.
  • a remotely-located lumiphor one or more semiconductor light-emitting devices and one or more lumiphors may be mutually spaced apart and included together in a package including electrical contacts for energizing the devices.
  • a remotely-located lumiphor a semiconductor light-emitting device may be included in a package; and a lumiphor may be positioned outside of the package.
  • a volumetric lumiphor may include light-scattering particles being dispersed in the volume of the matrix medium for causing some of the light emissions having the first spectral power distribution to be scattered within the volumetric lumiphor. As an example, causing some of the light emissions to be so scattered within the matrix medium may cause the luminescent materials in the volumetric lumiphor to absorb more of the light emissions having the first spectral power distribution.
  • the light-scattering particles may include: rutile titanium dioxide; anatase titanium dioxide; barium sulfate; diamond; alumina; magnesium oxide; calcium titanate; barium titanate; strontium titanate; or barium strontium titanate.
  • light-scattering particles may have particle sizes being within a range of about 0.01 micron (10 nanometers) and about 2.0 microns (2,000 nanometers).
  • a visible-light reflector may be formed by dispersing light-scattering particles having a first index of refraction in a volume of a matrix medium having a second index of refraction being suitably different from the first index of refraction for causing the volume of the matrix medium with the dispersed light-scattering particles to have suitable spectra of reflection values, transmission values, and absorption values for functioning as a visible-light reflector.
  • such spectra may be affected by a thickness of the volume of the matrix medium, and by a concentration of the light-scattering particles being distributed in the volume of the matrix medium, and by physical characteristics of the light-scattering particles such as the particle sizes and shapes, and smoothness or roughness of exterior surfaces of the particles.
  • the matrix medium for forming a visible-light reflector may have a composition that includes polymers or oligomers of: a polycarbonate; a silicone; an acrylic; a glass; a polystyrene; or a polyester such as polyethylene terephthalate.
  • the light-scattering particles may include: rutile titanium dioxide; anatase titanium dioxide; barium sulfate; diamond; alumina; magnesium oxide; calcium titanate; barium titanate; strontium titanate; or barium strontium titanate.
  • a visible-light reflector may include a reflective polymeric or metallized surface formed on a visible-light - transmissive polymeric or metallic object such as, for example, a volume of a matrix medium.
  • Additional examples of visible-light reflectors may include microcellular foamed polyethylene terephthalate sheets (“MCPET”).
  • MCPET microcellular foamed polyethylene terephthalate sheets
  • Suitable visible-light reflectors may be commercially available under the trade names White Optics® and MIRO® from WhiteOptics LLC, 243-G Quigley Blvd., New Castle, Delaware 19720 USA.
  • Suitable MCPET visible-light reflectors may be commercially available from the Furukawa Electric Co., Ltd., Foamed Products Division, Tokyo, Japan.
  • Additional suitable visible-light reflectors may be commercially available from CVI Laser Optics, 200 Dorado Place SE, Albuquerque, New Mexico 87123 USA.
  • a converging or diverging lens may be formed as a volume of a matrix medium having a suitable shape for functioning as a lens.
  • forming a diverging lens may include dispersing light-scattering particles having a first index of refraction in a volume of a matrix medium having a second index of refraction being suitably different from the first index of refraction for causing the volume of the matrix medium with the dispersed lightscattering particles to have suitable light-scattering value for functioning as a diverging lens.
  • the matrix medium for forming a lens may have a composition that includes polymers or oligomers of: a polycarbonate; a silicone; an acrylic; a glass; a polystyrene; or a polyester such as polyethylene terephthalate.
  • the light-scattering particles may include: rutile titanium dioxide; anatase titanium dioxide; barium sulfate; diamond; alumina; magnesium oxide; calcium titanate; barium titanate; strontium titanate; or barium strontium titanate.
  • a volumetric lumiphor and a visible-light reflector may be integrally formed.
  • a volumetric lumiphor and a visible-light reflector may be integrally formed in respective layers of a volume of a matrix medium, including a layer of the matrix medium having a dispersed lumiphor, and including another layer of the same or a different matrix medium having light-scattering particles being suitably dispersed for causing the another layer to have suitable spectra of reflection values, transmission values, and absorption values for functioning as the visible-light reflector.
  • an integrally-formed volumetric lumiphor and visible-light reflector may incorporate any of the further examples of variations discussed above as to separately-formed volumetric lumiphors and visible-light reflectors.
  • phosphor means: a material that exhibits luminescence when struck by photons.
  • Examples of phosphors that may utilized include: CaAlSiN 3 :Eu, SrAlSiN 3 :Eu, CaAlSiN 3 :Eu, Ba 3 Si 6 0i2N 2 :Eu, Ba 2 SiO 4 :Eu, Sr 2 SiO 4 :Eu, Ca 2 SiO 4 :Eu, Ca 3 Sc 2 Si 3 0i 2 :Ce, Ca 3 Mg 2 Si 3 0i 2 :Ce, CaSc 2 O 4 :Ce, CaSi 2 O 2 N 2 :Eu, SrSi 2 O 2 N 2 :Eu, BaSi 2 O 2 N 2 :Eu, Ca 5 (PO 4 ) 3 Cl:Eu, Ba 5 (PO 4 ) 3 Cl:Eu, Cs 2 CaP 2 O 7 , Cs 2 SrP 2 O 7 ,
  • quantum dot means: a nanocrystal made of semiconductor materials that are small enough to exhibit quantum mechanical properties, such that its excitons are confined in all three spatial dimensions.
  • quantum wire means: an electrically conducting wire in which quantum effects influence the transport properties.
  • quantum well means: a thin layer that can confine (quasi-)particles (typically electrons or holes) in the dimension perpendicular to the layer surface, whereas the movement in the other dimensions is not restricted.
  • photonic nanocrystal means: a periodic optical nanostructure that affects the motion of photons, for one, two, or three dimensions, in much the same way that ionic lattices affect electrons in solids.
  • semiconductor nanoparticle means: a particle having a dimension within a range of between about 1 nanometer and about 100 nanometers, being formed of a semiconductor.
  • the term “scintillator” means: a material that fluoresces when struck by photons.
  • a lumiphoric ink means: a liquid composition containing a luminescent material.
  • a lumiphoric ink composition may contain semiconductor nanoparticles. Examples of lumiphoric ink compositions that may be utilized are disclosed in Cao et al., U.S. Patent Application Publication No. 20130221489 published on August 29, 2013, the entirety of which hereby is incorporated herein by reference.
  • lumiphoric organic dye means an organic dye having luminescent up-converting or down-converting activity.
  • some perylene- based dyes may be suitable.
  • day glow tape means: a tape material containing a luminescent material.
  • CIE 1931 XY chromaticity diagram means: the 1931 International Commission on Illumination two-dimensional chromaticity diagram, which defines the spectrum of perceived color points of visible-light by (x, y) pairs of chromaticity coordinates that fall within a generally U-shaped area that includes all of the hues perceived by the human eye.
  • Each of the x and y axes of the CIE 1931 XY chromaticity diagram has a scale of between 0.0 and 0.8.
  • the spectral colors are distributed around the perimeter boundary of the chromaticity diagram, the boundary encompassing all of the hues perceived by the human eye.
  • the perimeter boundary itself represents maximum saturation for the spectral colors.
  • the CIE 1931 XY chromaticity diagram is based on the three-dimensional CIE 1931 XYZ color space.
  • the CIE 1931 XYZ color space utilizes three color matching functions to determine three corresponding tristimulus values which together express a given color point within the CIE 1931 XYZ three-dimensional color space.
  • the CIE 1931 XY chromaticity diagram is a projection of the three-dimensional CIE 1931 XYZ color space onto a two-dimensional (x, y) space such that brightness is ignored.
  • a technical description of the CIE 1931 XY chromaticity diagram is provided in, for example, the “Encyclopedia of Physical Science and Technology”, vol. 7, pp.
  • color point means: an (x, y) pair of chromaticity coordinates falling within the CIE 1931 XY chromaticity diagram.
  • Color points located at or near the perimeter boundary of the CIE 1931 XY chromaticity diagram are saturated colors composed of light having a single wavelength, or having a very small spectral power distribution.
  • Color points away from the perimeter boundary within the interior of the CIE 1931 XY chromaticity diagram are unsaturated colors that are composed of a mixture of different wavelengths.
  • the term “combined light emissions” means: a plurality of different light emissions that are mixed together.
  • the term “combined color point” means: the color point, as perceived by human eyesight, of combined light emissions.
  • “substantially constant” combined color points are: color points of combined light emissions that are perceived by human eyesight as being uniform, i.e., as being of the same color.
  • the phrase "substantially greater" as describing an intensity of a first visible-light source in comparison with that of a second visible- light source means that the intensity of the first visible-light source is noticeably greater to a casual observer than the intensity of the second visible-light source.
  • a plurality of semiconductor lightemitting devices may be collectively configured for generating visible-light emissions having a perceived color point, wherein a plurality of individual ones among the plurality of semiconductor light-emitting devices may each emit visible-light having a different color point.
  • Devices and methods for suitably generating visible-light emissions having such a perceived color point from a plurality of semiconductor light-emitting devices that may have different color points are disclosed in commonly-owned U.S. Patent No. 10,701,775 issued on June 30, 2020 and entitled "Methods for Generating Melatonin-Response-Tuned White Light with High Color Rendering," the entirety of which hereby is incorporated herein by reference.
  • the Planckian - black-body locus corresponds to the locations of color points of light emitted by a black-body radiator that is heated to various temperatures.
  • the CIE 1931 XY chromaticity diagram further includes a series of lines each having a designated corresponding temperature listing in units of degrees Kelvin spaced apart along the Planckian - black-body locus and corresponding to the color points of the incandescent light emitted by a black-body radiator having the designated temperatures.
  • correlated color temperature herein also referred to as the “CCT” of the corresponding color point.
  • Correlated color temperatures are expressed herein in units of degrees Kelvin (K).
  • K degrees Kelvin
  • chromaticity bin means: a bounded region within the CIE 1931 XY chromaticity diagram.
  • a chromaticity bin may be defined by a series of chromaticity (x,y) coordinates, being connected in series by lines that together form the bounded region.
  • a chromaticity bin may be defined by several lines or other boundaries that together form the bounded region, such as: one or more isotherms of CCT’s; and one or more portions of the perimeter boundary of the CIE 1931 chromaticity diagram.
  • delta(uv) means: the shortest distance of a given color point away from (i.e., above or below) the Planckian - black-body locus.
  • color points located at a delta(uv) of about equal to or less than 0.015 may be assigned a correlated color temperature (CCT).
  • CCT correlated color temperature
  • blue light means: light having a dominant wavelength being within a range of between about 480 nanometers and about 490 nanometers.
  • cyan light means: light having a dominant wavelength being within a range of between about 491 nanometers and about 520 nanometers.
  • green light means: light having a dominant wavelength being within a range of between about 521 nanometers and about 540 nanometers.
  • cyan-ish color point means: a perceived color point having a dominant wavelength being within a range of between about 480 nanometers and about 540 nanometers (herein referred to as a “cyan-ish color point”).
  • cyan-ish sky color means: a sky color having a perceived color point having a dominant wavelength being within a range of between about 480 nanometers and about 540 nanometers (herein referred to as a “cyan-ish sky color”).
  • yellow light means: light having a dominant wavelength being within a range of between about 575 nanometers and about 579 nanometers.
  • the term “amber light” means: light having a dominant wavelength being within a range of between about 580 nanometers and about 581 nanometers.
  • yellow-orange light means: light having a dominant wavelength being within a range of between about 582 nanometers and about 586 nanometers.
  • range light means: light having a dominant wavelength being within a range of between about 587 nanometers and about 599 nanometers.
  • red-orange light means: light having a dominant wavelength being within a range of between about 600 nanometers and about 620 nanometers.
  • range-ish color point means: a perceived color point having a dominant wavelength being within a range of between about 575 nanometers and about 620 nanometers (herein referred to as an “orange-ish color point”).
  • range-ish sky color means: a sky color having a perceived color point having a dominant wavelength being within a range of between about 575 nanometers and about 620 nanometers (herein referred to as an “orange-ish sky color”).
  • visible-light means light having one or more wavelengths being within a range of between about 380 nanometers and about 670 nanometers; and “visible-light spectrum” means the range of wavelengths of between about 380 nanometers and about 670 nanometers.
  • white light means: light having a color point located at a delta(uv) of about equal to or less than 0.006 and having a CCT being within a range of between about 10000K and about 1800K (herein referred to as a “white color point.”).
  • white color point a range of between about 10000K and about 1800K
  • white color point a range of between about 10000K and about 1800K
  • white light having a CCT of about 3000K may appear yellowish in color, while white light having a CCT of about equal to or greater than 8000K may appear more bluish in color and may be referred to as “cool” white light. Further, white light having a CCT of between about 2500K and about 4500K may appear reddish or yellowish in color and may be referred to as “warm” white light. “White light” includes light having a spectral power distribution of wavelengths including red, green and blue color points. In an example, a CCT of a lumiphor may be tuned by selecting one or more particular luminescent materials to be included in the lumiphor.
  • light emissions from a semiconductor light-emitting device that includes three separate emitters respectively having red, green and blue color points with an appropriate spectral power distribution may have a white color point.
  • light perceived as being “white” may be produced by mixing light emissions from a semiconductor light-emitting device having a blue, greenish-blue or purplish-blue color point together with light emissions having a yellow color point being produced by passing some of the light emissions having the blue, greenish-blue or purplish-blue color point through a lumiphor to down-convert them into light emissions having the yellow color point.
  • color rendition index means: the quantitative measure on a scale of 1 - 100 of the capability of a given light source to accurately reveal the colors of one or more objects having designated reference colors, in comparison with the capability of a black-body radiator to accurately reveal such colors.
  • the CRI-Ra of a given light source is a modified average of the relative measurements of color renditions by that light source, as compared with color renditions by a reference black-body radiator, when illuminating objects having the designated reference color(s).
  • the CRI is a relative measure of the shift in perceived surface color of an object when illuminated by a particular light source versus a reference black-body radiator.
  • the CRI-Ra will equal 100 if the color coordinates of a set of test colors being illuminated by the given light source are the same as the color coordinates of the same set of test colors being irradiated by the black-body radiator.
  • the CRI system is administered by the International Commission on Illumination (CIE).
  • CIE International Commission on Illumination
  • the CIE selected fifteen test color samples (respectively designated as R1-15) to grade the color properties of a white light source.
  • the first eight test color samples (respectively designated as Ri-s) are relatively low saturated colors and are evenly distributed over the complete range of hues. These eight samples are employed to calculate the general color rendering index Ra.
  • the general color rendering index Ra is simply calculated as the average of the first eight color rendering index values, Ri-s.
  • R9-15 An additional seven samples (respectively designated as R9-15) provide supplementary information about the color rendering properties of a light source; the first four of them focus on high saturation, and the last three of them are representative of well-known objects.
  • a set of color rendering index values, R1-15 can be calculated for a particular correlated color temperature (CCT) by comparing the spectral response of a light source against that of each test color sample, respectively.
  • CCT correlated color temperature
  • the CRI-Ra may consist of one test color, such as the designated red color of R9.
  • sunlight generally has a CRI-Ra of about 100; incandescent light bulbs generally have a CRI-Ra of about 95; fluorescent lights generally have a CRI-Ra of about 70 to 85; and monochromatic light sources generally have a CRI-Ra of about zero.
  • a light source for general illumination applications where accurate rendition of object colors may not be considered important may generally need to have a CRI-Ra value being within a range of between about 70 and about 80.
  • a light source for general interior illumination applications may generally need to have a CRI-Ra value being at least about 80.
  • a light source for general illumination applications where objects illuminated by the lighting device may be considered to need to appear to have natural coloring to the human eye may generally need to have a CRI-Ra value being at least about 85.
  • a light source for general illumination applications where good rendition of perceived object colors may be considered important may generally need to have a CRI-Ra value being at least about 90.
  • the term “in contact with” means: that a first object, being “in contact with” a second obj ect, is in either direct or indirect contact with the second obj ect.
  • the term “in indirect contact with” means: that the first object is not in direct contact with the second object, but instead that there are a plurality of objects (including the first and second objects), and each of the plurality of objects is in direct contact with at least one other of the plurality of objects (e.g., the first and second objects are in a stack and are separated by one or more intervening layers).
  • the term “in direct contact with” means: that the first object, which is “in direct contact” with a second object, is touching the second object and there are no intervening objects between at least portions of both the first and second objects.
  • the term “spectrophotometer” means: an apparatus that can measure a light beam's intensity as a function of its wavelength and calculate its total luminous flux.
  • integrating sphere - spectrophotometer means: a spectrophotometer operationally connected with an integrating sphere.
  • An integrating sphere also known as an Ulbricht sphere
  • Ulbricht sphere is an optical component having a hollow spherical cavity with its interior covered with a diffuse white reflective coating, with small holes for entrance and exit ports. Its relevant property is a uniform scattering or diffusing effect. Light rays incident on any point on the inner surface are, by multiple scattering reflections, distributed equally to all other points. The effects of the original direction of light are minimized.
  • An integrating sphere may be thought of as a diffuser which preserves power but destroys spatial information.
  • a Coblentz sphere has a mirror-like (specular) inner surface rather than a diffuse inner surface. Light scattered by the interior of an integrating sphere is evenly distributed over all angles. The total power (radiant flux) of a light source can then be measured without inaccuracy caused by the directional characteristics of the source.
  • Background information on integrating sphere - spectrophotometer apparatus is provided in Liu et al., U.S. Patent No. 7,532,324 issued on May 12, 2009, the entirety of which hereby is incorporated herein by reference.
  • color points may be measured, for example, by utilizing a spectrophotometer, such as an integrating sphere - spectrophotometer.
  • a spectrophotometer such as an integrating sphere - spectrophotometer.
  • the spectra of reflection values, absorption values, and transmission values of a reflective surface or of an object may be measured, for example, utilizing an ultraviolet - visible - near infrared (UV - VIS - NIR) spectrophotometer.
  • UV - VIS - NIR ultraviolet - visible - near infrared
  • the term "diffuse refraction” means refraction from an object's surface that scatters the visible-light emissions, casting multiple jittered light rays forming combined light emissions having a combined color point.
  • control facility means: a device being suited for controlling the transmission of a variable power input to one or more semiconductor lightemitting devices being included in a visible-light source.
  • a control facility may include a microprocessor, and may provide the variable power input by, as examples: constant current reduction (CCR); constant voltage (CV); or pulse-width-modulation (PWM).
  • CCR constant current reduction
  • CV constant voltage
  • PWM pulse-width-modulation
  • microprocessor means a multipurpose, programmable device that accepts digital data as input, and processes the digital data according to instructions stored in the programmable device’s memory, and provides results as output.
  • a control facility may have conductors for transmitting the variable
  • a control facility may include: (1) one or more electrical components employed in converting electrical power (e.g., from AC to DC and/or from one voltage to another voltage); (2) one or more electronic components employed in driving one or more semiconductor lightemitting devices, e.g., running one or more semiconductor light-emitting devices intermittently and/or adjusting the power input as supplied to one or more of the semiconductor light-emitting devices in response to a user command such as a dimmer command, or a command received from the control facility; (3) one or more circuit boards (e.g., a metal core circuit board) for supporting and/or providing a variable power input to semiconductor light-emitting devices or any other electrical components, and/or (4) one or more wires connecting any auxiliary electrical components, such as bridge rectifiers, transformers, or power factor controllers.
  • auxiliary electrical components such as bridge rectifiers, transformers, or power factor controllers.
  • a control facility may include wired or wireless user command input devices, examples of which may include wired dual in-line packaged (DIP) switches, other wired switches, or wireless mobile communicator applications.
  • DIP dual in-line packaged
  • the term “coupled” means positioned for transmission of a power input to one or more semiconductor light-emitting devices of a visible- light source.
  • the term “ambient space” means any interior or exterior location where a lighting controller or a lighting system may be utilized.
  • an "ambient space” may be a room inside a building or may be an exterior location.
  • the term “boundary” means a portion of a perimeter of an ambient space.
  • a “boundary” may be a wall, floor or ceiling of a room; or may be a portion of a perimeter of an exterior location.
  • the term “down-light” means visible-light emissions being directed in a generally downward direction within an ambient space.
  • the term “up-light” means visible-light emissions being directed in a generally upward direction within an ambient space.
  • Fig. 1 is a schematic top perspective view showing an example [100] of an implementation of a lighting system.
  • Fig. 2 is a schematic cross-sectional view taken along the line 2-2 showing the example [100] of the lighting system.
  • Fig. 3 is a schematic cross-sectional
  • SUBSTITUTE SHEET (RULE 26) view taken along the line 3-3 showing the example [100] of the lighting system.
  • Fig. 4 is a schematic bottom perspective view taken along the line 4 showing the example [100] of an implementation of a lighting system.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31. It is understood throughout this specification that a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], and [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [100] of the implementation of the lighting system includes: an edge-lit lightguide panel [102]; another edge-lit lightguide panel [104]; and a total internal reflection lens [106],
  • the edge-lit lightguide panel [102] is extended along a longitudinal axis [108] of the lighting system.
  • the edge-lit lightguide panel [102] in the example [100] of the lighting system further has a pair of mutually-opposing panel surfaces [110], [112],
  • the edge-lit lightguide panel [102] in the example [100] of the lighting system also has a peripheral edge [114] being extended along and spaced transversely away from the longitudinal axis [108],
  • a one [112] of the pair of panel surfaces includes a first light output interface [116],
  • the example [100] of the lighting system also includes a visible-light source [118] including a plurality of semiconductor light-emitting devices [120], [122],
  • the visible-light source [118] is configured for generating visible-light emissions [124], [126] from the plurality of semiconductor light-emitting devices [120], [122],
  • the visible-light source [118] is located along the peripheral edge [114] for directing the visible-light emissions [124], [126] into the edge-lit lightguide panel [102],
  • the another edge-lit lightguide panel [104] is extended along the longitudinal axis [108], Additionally in the example [100] of the lighting system, the another edge-lit lightguide panel [104] has another pair of mutually-opposing panel surfaces [128], [130], In the example [100] of the lighting system, the another edge-lit lightguide panel [104] has another peripheral edge [132] being extended along and spaced transversely away from the longitudinal axis [108], Further, a one [130] of the another pair of panel surfaces in the example [100] of the lighting system includes a second light output interface [134],
  • the example [100] of the lighting system additionally includes another visible-light source [136] including another plurality of semiconductor light-emitting devices [138], [140],
  • the another visible-light source [136] is configured for generating additional visible-light emissions [142], [144] from the another plurality of semiconductor light-emitting devices [138], [140],
  • the another visible-light source [136] is located along the another peripheral edge [132] for directing the additional visible-light emissions [142], [144] into the another edge-lit lightguide panel [104],
  • the total internal reflection lens [106] has a central light-emission axis [146] being transverse to the longitudinal axis [108],
  • the total internal reflection lens [106] in the example [100] of the lighting system includes a third light output interface [148] being located between the first and second light output interfaces [116], [134],
  • the third light output interface [148] is spaced apart from a central light input interface [150] by a total internal reflection side surface [152],
  • the total internal reflection side surface [152] in the example [100] of the lighting system is extended along the central light-emission axis [146],
  • the total internal reflection lens [106] has a further visible-light source [154] including a further plurality of semiconductor light-emitting devices [156], [158],
  • the further visible-light source [154] in the example [100] of the lighting system is configured for generating further visible-light emissions [160], [
  • the edge-lit lightguide panel [102] may direct the visible-light emissions [124], [126] for emission from the first light output interface [116]; and the another edge-lit lightguide panel [104] may direct the additional visible-light emissions [142], [144] for emission from the second light output interface [134]; and the total internal reflection lens [106] may direct the further visible-light emissions [160], [162] for emission from the third light output interface [148],
  • the first, second and third light output interfaces [116], [134], [148] cooperatively define an emission aperture [164] for forming combined visible-light emissions [166], [168] including the visible-light emissions [124], [126], the additional visible-light emissions [142], [144], and the further visible-light emissions [160], [162], Further in the example [100] of the lighting system, the emission aperture [164] forms a shielding zone [170] for redirecting some of the combined visible-light emissions [166], [168], [00140]
  • the total internal reflection side surface [152] may be extended along the longitudinal axis [108] in addition to being extended along the central light-emission axis [146]; and the central light input interface [150] may be extended along the longitudinal axis [108]; and the further visible-light source [154] may be extended along the longitudinal axis [108], Further in those examples [100] of the lighting system, the total internal reflection
  • the central light input interface [150] of the total internal reflection lens [106] may include a lens cavity [172] formed by a lens face [174] being spaced apart along the central light-emission axis [146] from the further plurality of semiconductor light-emitting devices [156], [158] by a central side wall [176],
  • portions of the further visible-light emissions [160], [162] entering into the total internal reflection lens [106] through the central side wall [176] may be refracted towards a normalized direction being orthogonal to a surface of the central side wall [176] and away from the central light-emission axis [146] because the refractive index of the total internal reflection lens [106] may be greater than the refractive index of an ambient atmosphere, e.g.
  • the portions of the further visible-light emissions [160], [162] so entering into the total internal reflection lens [106] through the central side wall [176] may then undergo total internal reflection at the total internal reflection side surface [152], thereby being redirected toward the third light output interface [148],
  • the central light input interface [150] of the total internal reflection lens [106] may include a lens cavity [172] having a different shape (not shown). Further in those examples [100] of the lighting system, the total internal reflection lens [106] may include a lens cavity [172] having an otherwise angled or compound central side wall (not shown). In other examples [100] of the lighting system, the total internal reflection lens [106] may be a fresnel lens (not shown). Suitable fresnel lens structures that may be utilized as being the total internal reflection lens [106] are disclosed, for example, in Parkyn et al., U.S. Patent No. 5,577,492 issued on November 26, 1996, the entirety of which hereby is incorporated herein by reference.
  • the total internal reflection lens [106] may be a converging total internal reflection lens [106] being configured for causing convergence of the further visible-light emissions [160], [162] in their travel along the central light-emission axis [146] toward the third light output interface [148], Further in those examples [100] of the lighting system, the total internal reflection lens [106] may be a converging total internal reflection lens [106] being configured for causing convergence of the further visible-light emissions [160], [162] along the central light-emission axis [146] as having a beam angle being within a range of between about thirty degrees (30°) and about ten degrees (10°).
  • the total internal reflection lens [106] may have a spectrum of transmission values of the further visible-light emissions [160], [162] having an average value being at least about ninety percent (90%). In additional examples [100] of the lighting system, the total internal reflection lens [106] may have a spectrum of transmission values of the further visible-light emissions [160], [162] having an average value being at least about ninety-five percent (95%). As some examples [100] of the lighting system, the total internal reflection lens [106] may have a spectrum of absorption values of the further visible-light emissions [160], [162] having an average value being no greater than about ten percent (10%). As further examples [100] of the lighting system, the total internal reflection lens [106] may have a spectrum of absorption values of the further visible-light emissions [160], [162] having an average value being no greater than about five percent (5%).
  • the total internal reflection lens [106] may have a refractive index of at least about 1.41.
  • the total internal reflection lens [106] may be formed of a silicone composition having a refractive index of about 1.42; or a polymethyl-methacrylate composition having a refractive index of about 1.49; or a polycarbonate composition having a refractive index of about 1.58; or a silicate glass composition having a refractive index of about 1.67.
  • the edge-lit lightguide panel [102] may have a first pair of lateral edges [178], [180] being mutually spaced apart along the longitudinal axis [108]; and the another edge-lit lightguide panel [104] may have a second pair of lateral edges [182], [184] being mutually spaced apart along the longitudinal axis [108], Further in those examples [100] of the lighting system, each one of the lateral edges [178], [180], [182], [184] may be curvilinear; and the one [112] of the pair of panel surfaces may be concave; and the one [130] of the another pair of panel surfaces may be concave.
  • the edge-lit lightguide panel [102] may be configured for directing the visible-light emissions [124], [126] in first directions towards the longitudinal axis [108]; and the another edge-lit lightguide panel [104] may be configured for directing the additional visible-light emissions [142], [144] in second directions, being symmetrically opposed to the first directions, towards the longitudinal axis [108],
  • the edge-lit lightguide panel [102] may further direct the visible-light emissions [124], [126] for emission from the first light output interface [116]; and the another edge-lit lightguide panel [104] may further direct the additional visible-light emissions [142], [144] for emission from the second light output interface [134]; and the total internal reflection lens [106] may direct the further visible-light emissions [160], [162] for emission from the third light output interface [148],
  • the edge-lit lightguide panel [102] and the another edge-lit lightguide panel [104] may be integrally formed together with the total internal reflection lens [106],
  • the edge-lit lightguide panel [102] may have a central edge represented by a dashed line [186] being extended along the longitudinal axis [108] and being spaced transversely away from the peripheral edge [114]; and the another edge-lit lightguide panel [104] may have another central edge represented by a dashed line [188] being extended along the longitudinal axis [108] and being spaced transversely away from the another peripheral edge [132]; and the total internal reflection lens [106] may be located between and attached to the central edge [186] and the another central edge [188],
  • the edge-lit lightguide panel [102] may include internal light-dispersing features; and the another edge-lit lightguide panel [104] may include additional internal light-dispersing features.
  • the internal light-dispersing features may include positive elements such as: particles having various shapes being e.g. spheroidal or polygonal; particles having various material compositions including, e.g., phosphors, quantum dots, and pigmented dots; micro-optical features such as spherical or elliptical lenses, and reflective micro-scale particles.
  • the internal light-dispersing features may include negative elements such as hot-pressed micro-patterns e.g. micro-grooves, lenticular patterns, prisms, fresnels, conical arrays, pyramids, or domes.
  • the internal light-dispersing features may have a gradually-increasing density in a direction from the peripheral edge [114] towards the longitudinal axis [108]; and the additional internal lightdispersing features may have a gradually-increasing density in another direction from the another peripheral edge [132] towards the longitudinal axis [108],
  • the edge-lit lightguide panel [102] may include external light-dispersing features on the one [112] or the another one [110] of the pair of panel surfaces; and the another edge-lit lightguide panel [104] may include additional external light-dispersing features on the one [130] or the another one [128] of the another pair of panel surfaces.
  • the external light-dispersing features may include positive elements such as: pigmented dots; or micro-optical features such as spherical or elliptical lenses.
  • the external light-dispersing features may include negative elements such as hot-pressed textured surfaces such as micro-patterns e.g. micro-grooves, lenticular patterns, prisms, fresnels, conical arrays, pyramids, domes, or laser-ablated regions.
  • the external light-dispersing features may have a gradually-increasing density in a direction from the peripheral edge [114] towards the longitudinal axis [108]; and the additional external lightdispersing features may have a gradually-increasing density in another direction from the another peripheral edge [132] towards the longitudinal axis [108],
  • the another one [110] of the pair of panel surfaces may have a light-reflective layer [202]; and the another one [128] of the another pair of panel surfaces may have another light-reflective layer [204], Further in those examples [100] of the lighting system, the another one [110] of the pair of panel surfaces may have a specular light- reflective layer [202]; and the another one [128] of the another pair of panel surfaces may have another specular light-reflective layer [204], Additionally in those examples [100] of the lighting system, the another one [110] of the pair of panel surfaces may have a metallic light-reflective layer [202]; and the another one [128] of the another pair of panel surfaces may have another metallic light-reflective layer [204], In some of those examples [100] of the lighting system, the metallic light-reflective layers [202], [204] may have a composition that includes: silver, platinum, palladium, aluminum, zinc, gold, iron, copper,
  • the another one [110] of the pair of panel surfaces may have a light-reflective layer [202]; and the another one [128] of the another pair of panel surfaces may have another light-reflective layer [204]; and each of the light- reflective layers [202], [204] may have a minimum visible-light reflection value from any incident angle being at least about ninety percent (90%) or being at least about ninety-five percent (95%).
  • the plurality of the semiconductor lightemitting devices [120], [122] may include an array of the semiconductor light-emitting devices [120], [122] being mutually spaced apart along the longitudinal axis [108]; and the another plurality of the semiconductor light-emitting devices [138], [140] may include another array of the semiconductor light-emitting devices [138], [140] being mutually spaced apart along the longitudinal axis [108], Additionally in those examples [100] of the lighting system, the further plurality of the semiconductor light-emitting devices [156], [158] may include a further array of the semiconductor light-emitting devices [156], [158] being mutually spaced apart along the longitudinal axis [108],
  • the plurality of the semiconductor lightemitting devices [120], [122] may be collectively configured for generating the visible-light emissions [124], [126] as having a selectable perceived color point; and the another plurality of the semiconductor light-emitting devices [138], [140] may be collectively configured for generating the additional visible-light emissions [142], [144] as having another selectable perceived color point.
  • the further plurality of the semiconductor light-emitting devices [156], [158] may be collectively configured for generating the further visible-light emissions [160], [162] as having a further selectable perceived color point.
  • the plurality of the semiconductor lightemitting devices [120], [122] may include a plurality of clusters of the semiconductor lightemitting devices [120], [122] being co-located together, each one of the plurality of clusters being collectively configured for generating the visible-light emissions [124], [126] as having a selectable perceived color point; and the another plurality of the semiconductor light-emitting devices [138], [140] may include another plurality of clusters of the semiconductor light-emitting devices [138], [140] being co-located together, each one of the another plurality of clusters being collectively configured for generating the additional visible-light emissions [142], [144] as having another selectable perceived color point.
  • the further plurality of the semiconductor light-emitting devices [156], [158] may include a further plurality of clusters of the semiconductor light-emitting devices [156], [158] being co-located together, each one of the further plurality of clusters being collectively configured for generating the further visible-light emissions [160], [162] as having a further selectable perceived color point.
  • each of the pluralities of clusters of the semiconductor light-emitting devices [120], [122], [138], [140], [156], [158] may include two or three or more co-located semiconductor light-emitting devices being configured for collectively generating the visible-light emissions [124], [126] and the additional visible-light emissions [142], [144] and the further visible-light emissions [160], [162] as having the respective selectable perceived color points.
  • a plurality of semiconductor light-emitting devices [120], [122], or a plurality of semiconductor light-emitting devices [138], [140], or a plurality of semiconductor light-emitting devices [156], [158] may be arranged in a chip-on-board (not shown) array, or in a discrete (not shown) array on a printed circuit board (not shown).
  • Semiconductor light-emitting device arrays including chip-on-board arrays and discrete arrays may be conventionally fabricated by persons of ordinary skill in the art.
  • semiconductor light-emitting devices [120], [122], [138], [140], [156], [158] of the example [100] of the lighting system may be provided with drivers (not shown) and power supplies (not shown) being conventionally fabricated and configured by persons of ordinary skill in the art.
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [160], [162] as being within a field angle of the total internal reflection lens [106] and for causing emission of another portion of the further visible-light emissions [160], [162] as being outside the field angle of the total internal reflection lens [106]; and the emission aperture [164] may be configured for redirecting some of the another portion of the further visible-light emissions [160], [162],
  • the total internal reflection lens [106] may, as examples, have a beam angle being within a range of between about thirty degrees (30°) and about ten degrees (10°). Additionally in those examples [100] of the lighting system, the total internal reflection lens [106] may, as examples have a field angle being within a range of between about sixty degrees (60°) and about twenty degrees (20°).
  • the emission aperture [164] may be positioned for redirecting a part of the another portion of the further visible-light emissions [160], [162] being emitted at the third light output interface [148] in directions deviating from the central lightemission axis [146] by greater than about seventy degrees (70°). In further examples [100] of the lighting system, the emission aperture [164] may be positioned for redirecting a part of the another portion of the further visible-light emissions [160], [162] being emitted at the third light output interface [148] in directions deviating from the central light-emission axis [146] by greater than about sixty degrees (60°).
  • the lateral edges [178], [180], [182], [184] of the edge-lit lightguide panels [102], [104] may be curvilinear; and the one [112] of the pair of panel surfaces may be concave; and the one [130] of the another pair of panel surfaces may be concave.
  • the concave panel surfaces [112], [130] of the emission aperture [164] may be positioned for mechanically shielding and thus redirecting some of the further visible-light emissions [160], [162] being emitted at the third light output interface [148] in directions deviating from the central lightemission axis [146] by greater than about sixty degrees (60°). Additionally in that example [100] of the lighting system, redirection of some of the further visible-light emissions [160], [162] being emitted at the third light output interface [148] in high-angle directions being greater than about sixty degrees (60°) or seventy degrees (70°) may substantially reduce objectionable glare.
  • the total internal reflection lens [106] may have a beam angle being within a range of between about thirty degrees (30°) and about twenty degrees (20°). Further in those examples [100] of the lighting system, the total internal reflection lens [106] may have a field angle being within a range of between about sixty degrees (60°) and about forty degrees (40°).
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [160], [162] as being within the field angle of the total internal reflection lens [106] and for causing emission of another portion of the further visible-light emissions [160], [162] as being outside the field angle of the total internal reflection lens [106]; and the emission aperture [164] may be configured for redirecting some of the another portion of the further visible-light emissions [160], [162], Further in those examples [100], the emission aperture [164] may be positioned for redirecting a part of the another portion of the further visible-light emissions [160], [162] being emitted at the third light output interface [148] in directions deviating from the central light-emission axis [146] by greater than about sixty degrees (60°), or deviating from the central light-emission axis by greater than about seventy degrees (70°).
  • the total internal reflection lens [106] may have a beam angle being within a range of between about twenty degrees (20°) and about ten degrees (10°); or within a range of between about fifteen degrees (15°) and about ten degrees (10°). Further in those examples [100] of the lighting system, the total internal reflection lens [106] may have a field angle being respectively within a range of between about forty degrees (40°) and about twenty degrees (20°), or within a range of between about thirty degrees (30°) and about twenty degrees (20°).
  • the third light output interface [148] may include internal or external light-dispersing features; and the third light output interface [148] may cause the total internal reflection lens [106] to have an effective field angle being within a range of between about sixty degrees (60°) and about forty degrees (40°).
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [160], [162] as being within the effective field angle of the total internal reflection lens [106] and for causing emission of another portion of the further visible-light emissions [160], [162] as being outside the effective field angle of the total internal reflection lens [106]; and the emission aperture [164] may be configured for redirecting some of the another portion of the further visible-light emissions [160], [162], Further in those examples [100], the emission aperture [164] may be positioned for redirecting a part of the another portion of the further visible-light emissions [160], [162] being emitted at the third light output interface [148] in directions deviating from the central light-emission axis [146] by greater than about sixty degrees (60°), or deviating from the central light-emission axis by greater than about seventy degrees (70°).
  • the lighting system may include a controller (not shown) for the visible-light source [118] and for the another visible-light source [136] and for the further visible- light source [154], the controller being configured for causing the visible-light emissions [124], [126] to have a selectable perceived color point and for causing the additional visible-light emissions [142], [144] to have another selectable perceived color point and for causing the further visible-light emissions [160], [162] to have a further selectable perceived color point.
  • the controller may be configured for causing the visible-light emissions [124], [126] to have a selectable and adjustable intensity and for causing the additional visible-light emissions [142], [144] to have another selectable and adjustable intensity and for causing the further visible-light emissions [160], [162] to have a further selectable and adjustable intensity.
  • the controller may be configured for causing the combined visible-light emissions [166], [168] to generate a down-lighting pattern being: wall graze, table with wall fill, wall wash left, wall wash right, double wall wash, wall wash left plus floor, wall wash right plus floor, room, or batwing.
  • the controller may be configured for selection among a plurality of different pre-programmed combinations of the intensities for the visible-light emissions [124], [126], the additional visible-light emissions [142], [144], and the further visible- light emissions [160], [162], Further in those examples [100] of the lighting system, the controller may be configured for adjusting, over a selectable time period, the intensities for the visible-light emissions [124], [126], the additional visible-light emissions [142], [144], and the further visible- light emissions [160], [162] from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the lighting system may further include an ambient light sensor (not shown); and the controller may be configured, in response to the ambient light sensor, for adjusting the intensities for the visible- light emissions [124], [126], the additional visible-light emissions [142], [144], and the further visible-light emissions [160], [162],
  • the lighting system may include a controller (not shown) for the visible-light source [118] being configured for causing the visible-light emissions [124], [126] to have a selectable perceived color point; and may include another controller (not shown) for the another visible-light source [136] being configured for causing the additional visible-light emissions [142], [144] to have another selectable perceived color point; and may include a further controller (not shown) for the further visible-light source [154] being configured for causing the further visible-light emissions [160], [162] to have a further selectable perceived color point.
  • the controller may be configured for causing the visible-light emissions [124], [126] to have a selectable and adjustable intensity; and the another controller may be configured for causing the additional visible-light emissions [142], [144] to have another selectable and adjustable intensity; and the further controller may be configured for causing the further visible-light emissions [160], [162] to have a further selectable and adjustable intensity.
  • the controller and the another controller and the further controller may be collectively configured for causing the combined visible-light emissions [166], [168] to generate a down-lighting pattern being: wall graze, table with wall fill, wall wash left, wall wash right, double wall wash, wall wash left plus floor, wall wash right plus floor, room, or batwing.
  • the controller and the another controller and the further controller may be collectively configured for selection among a plurality of different pre-programmed combinations of the intensities for the visible-light emissions [124], [126], the additional visible-light emissions [142], [144], and the further visible-light emissions [160], [162], Further in those examples [100] of the lighting system, the controller and the another controller and the further controller may be collectively configured for adjusting, over a selectable time period, the intensities for the visible- light emissions [124], [126], the additional visible-light emissions [142], [144], and the further visible-light emissions [160], [162] from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the lighting system may also include an ambient light sensor; and the controller and the another controller and the further controller may be collectively configured, in response to the ambient light sensor, for adjusting the intensities for the visible-light emissions [124], [126], the additional visible-light emissions [142], [144], and the further visible-light emissions [160], [162],
  • FIG. 5 is a schematic top perspective view showing an example [500] of an implementation of a lighting system.
  • Fig. 6 is a schematic cross-sectional view taken along the line 6-6 showing the example [500] of the lighting system.
  • Fig. 7 is a schematic cross-sectional view taken along the line 7-7 showing the example [500] of the lighting system.
  • Fig. 8 is a schematic bottom perspective view taken along the line 8 showing the example [500] of an implementation of a lighting system.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31. It is understood throughout this specification that a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [500] of the implementation of the lighting system includes: an edge-lit lightguide panel [502]; another edge-lit lightguide panel [504]; a total internal reflection lens [506]; and an additional total internal reflection lens [507],
  • the edge-lit lightguide panel [502] is extended along a longitudinal axis [508] of the lighting system.
  • the edge-lit lightguide panel [502] in the example [500] of the lighting system further has a pair of mutually-opposing panel surfaces [510], [512],
  • the edge-lit lightguide panel [502] in the example [500] of the lighting system also has a peripheral edge [514] being extended along and spaced transversely away from the longitudinal axis [508],
  • a one [512] of the pair of panel surfaces includes a first light output interface [516], [00166]
  • the example [500] of the lighting system also includes a visible-light source [518] including a plurality of semiconductor light-emitting devices [520], [522],
  • the visible-light source [518] is configured for generating visible-light emissions [524], [526] from the plurality of semiconductor light-emitting devices [520], [522], Further in the example [500] of the lighting system, the visible-light source [518] is located along the peripheral edge [
  • the another edge-lit lightguide panel [504] is extended along the longitudinal axis [508], Additionally in the example [500] of the lighting system, the another edge-lit lightguide panel [504] has another pair of mutually-opposing panel surfaces [528], [530], In the example [500] of the lighting system, the another edge-lit lightguide panel [504] has another peripheral edge [532] being extended along and spaced transversely away from the longitudinal axis [508], Further, a one [530] of the another pair of panel surfaces in the example [500] of the lighting system includes a second light output interface [534],
  • the example [500] of the lighting system additionally includes another visible-light source [536] including another plurality of semiconductor light-emitting devices [538], [540],
  • the another visible-light source [536] is configured for generating additional visible-light emissions [542], [544] from the another plurality of semiconductor light-emitting devices [538], [540],
  • the another visible-light source [536] is located along the another peripheral edge [532] for directing the additional visible-light emissions [542], [544] into the another edge-lit lightguide panel [504],
  • the total internal reflection lens [506] has a central light-emission axis [546] being transverse to the longitudinal axis [508],
  • the total internal reflection lens [506] in the example [500] of the lighting system includes a third light output interface [548] being located between the first and second light output interfaces [516], [534],
  • the third light output interface [548] is spaced apart from a central light input interface [550] by a total internal reflection side surface [552],
  • the total internal reflection side surface [552] in the example [500] of the lighting system is extended along the central light-emission axis [546],
  • the total internal reflection lens [506] has a further visible-light source [554] including a further plurality of semiconductor light-emitting devices [556], [558], The further visible-light source [554] in the example [500] of the
  • the additional total internal reflection lens [507] has an additional central light-emission axis [547] being transverse to the longitudinal axis [508],
  • the additional total internal reflection lens [507] in the example [500] of the lighting system includes a fourth light output interface [549] being spaced apart along the longitudinal axis [508] away from the third light output interface [548] and being located between the first and second light output interfaces [516], [534],
  • the fourth light output interface [549] is spaced apart from an additional central light input interface [551] by an additional total internal reflection side surface [553],
  • the additional total internal reflection side surface [553] in the example [500] of the lighting system is extended along the additional central light-emission axis [547],
  • the additional total internal reflection lens [507] has an additional visible-light source [555] including an additional plurality of semiconductor light-e
  • the edge-lit lightguide panel [502] may direct the visible-light emissions [524], [526] for emission from the first light output interface [516]; and the another edge-lit lightguide panel [504] may direct the additional visible-light emissions [542], [544] for emission from the second light output interface [534]; and the total internal reflection lens [506] may direct the further visible-light emissions [560], [562] for emission from the third light output interface [548]; and the another total internal reflection lens [507] may direct the other visible-light emissions [561], [563] for emission from the fourth light output interface [549],
  • the first, second, third and fourth light output interfaces [516], [534], [548], [549] cooperatively define an emission aperture [564] for forming combined visible-light emissions [566], [568] including the visible-light emissions [524], [526], the additional visible-light emissions [542], [544], the further visible-light emissions [560], [562], and the other visible-light emissions [561], [563],
  • the emission aperture [564] forms a shielding zone [570] for redirecting some of the combined visible-light emissions [566], [568],
  • the total internal reflection side surface [552] and the additional total internal reflection side surface [553] each may have a frusto-conical cross- sectional profile in both of the directions of the lines 6-6 and 7-7 being perpendicular to the longitudinal axis [508],
  • the additional total internal reflection lens [507] may have any combination of the further structural and performance features discussed herein with regard to the total internal reflection lens [506]
  • the lighting system may include (not shown) further total internal reflection lenses in addition to the total internal reflection lenses [506], [507],
  • such further total internal reflection lenses may have any combination of the further structural and performance features discussed herein with regard to the total internal reflection lenses [506] and [507], and may be mutually spaced apart in the same manner by which the total internal reflection lenses [506], [507] are spaced apart along the longitudinal axis [508],
  • the central light input interface [550] of the total internal reflection lens [506] may include a lens cavity [572] formed by a lens face [574] being spaced apart along the central lightemission axis [546] from the further plurality of semiconductor light-emitting devices [556], [558] by a central side wall [576],
  • portions of the further visible-light emissions [560], [562] entering into the total internal reflection lens [506] through the central side wall [576] may be refracted towards a normalized direction being orthogonal to a surface of the central side wall [576] and away from the central light-emission axis [546] because the refractive index of the total internal reflection lens [506] may be greater than the refractive index of an ambient atmosphere, e.g.
  • the portions of the further visible-light emissions [560], [562] so entering into the total internal reflection lens [506] through the central side wall [576] may then undergo total internal reflection at the total internal reflection side surface [552], thereby being redirected toward the third light output interface [548],
  • the central light input interface [550] of the total internal reflection lens [506] may include a lens cavity [572] having a different shape (not shown). Further in those examples [500] of the lighting system, the total internal reflection lens [506] may include a lens cavity [572] having an otherwise angled or compound central side wall (not shown). In other examples [500] of the lighting system, the total internal reflection lens [506] may be a fresnel lens (not shown). Suitable fresnel lens structures that may be utilized as being the total internal reflection lens [506] are disclosed, for example, in Parkyn et al., U.S. Patent No. 5,577,492 issued on November 26, 1996, the entirety of which hereby is incorporated herein by reference.
  • the total internal reflection lens [506] (and likewise the additional total internal lens [507]) may be a converging total internal reflection lens [506] being configured for causing convergence of the further visible-light emissions [560], [562] in their travel along the central light-emission axis [546] toward the third light output interface [548], Further in those examples [500] of the lighting system, the total internal reflection lens [506] may be a converging total internal reflection lens [506] being configured for causing convergence of the further visible-light emissions [560], [562] along the central light-emission axis [546] as having a beam angle being within a range of between about thirty degrees (30°) and about ten degrees (10°).
  • the total internal reflection lens [506] (and likewise the additional total internal lens [507]) may have a spectrum of transmission values of the further visible-light emissions [560], [562] having an average value being at least about ninety percent (90%).
  • the total internal reflection lens [506] may have a spectrum of transmission values of the further visible-light emissions [560], [562] having an average value being at least about ninety-five percent (95%).
  • the total internal reflection lens [506] may have a spectrum of absorption values of the further visible-light emissions [560], [562] having an average value being no greater than about ten percent (10%). As further examples [500] of the lighting system, the total internal reflection lens [506] may have a spectrum of absorption values of the further visible-light emissions [560], [562] having an average value being no greater than about five percent (5%).
  • the total internal reflection lens [506] (and likewise the additional total internal lens [507]) may have a refractive index of at least about 1.41.
  • the total internal reflection lens [506] may be formed of: a silicone composition having a refractive index of about 1.42; or a polymethylmethacrylate composition having a refractive index of about 1.49; or a polycarbonate composition having a refractive index of about 1.58; or a silicate glass composition having a refractive index of about 1.67.
  • the edge-lit lightguide panel [502] may have a first pair of lateral edges [578], [580] being mutually spaced apart along the longitudinal axis [508]; and the another edge-lit lightguide panel [504] may have a second pair of lateral edges [582], [584] being mutually spaced apart along the longitudinal axis [508], Further in those examples [500] of the lighting system, each one of the lateral edges [578], [580], [582], [584] may be linear; and the one [512] of the pair of panel surfaces may be generally flat; and the one [530] of the another pair of panel surfaces may be generally flat.
  • the edge-lit lightguide panel [502] may be configured for directing the visible-light emissions [524], [526] in first directions towards the longitudinal axis [508]; and the another edge-lit lightguide panel [504] may be configured for directing the additional visible-light emissions [542], [544] in second directions, being symmetrically opposed to the first directions, towards the longitudinal axis [508],
  • the edge-lit lightguide panel [502] may further direct the visible-light emissions [524], [526] for emission from the first light output interface [516]; and the another edge-lit lightguide panel [504] may further direct the additional visible-light emissions [542], [544] for emission from the second light output interface [534]; and the total internal reflection lens [506] may direct the further visible-light emissions [560], [562] for emission from the third light output interface [548]; and the additional total internal reflection lens [507] may
  • the edge-lit lightguide panel [502] and the another edge-lit lightguide panel [504] may be integrally formed together with the total internal reflection lenses [506], [507],
  • the edge-lit lightguide panel [502] may have a central edge represented by a dashed line [586] being extended along the longitudinal axis [508] and being spaced transversely away from the peripheral edge [514]; and the another edge-lit lightguide panel [504] may have another central edge represented by a dashed line [588] being extended along the longitudinal axis [508] and being spaced transversely away from the another peripheral edge [532]; and the total internal reflection lenses [506], [507] may be located between and attached to the central edge [586] and the another central edge [588], [00182]
  • the edge-lit lightguide panel [502] may include internal light-
  • the internal light-dispersing features may include positive elements such as: particles having various shapes being e.g. spheroidal or polygonal; particles having various material compositions including, e.g., phosphors, quantum dots, and pigmented dots; micro-optical features such as spherical or elliptical lenses, and reflective micro-scale particles.
  • the internal light-dispersing features may include negative elements such as: hot-pressed micro-patterns e.g. micro-grooves, lenticular patterns, prisms, fresnels, conical arrays, pyramids, or domes.
  • the internal light-dispersing features may have a gradually-increasing density in a direction from the peripheral edge [514] towards the longitudinal axis [508]; and the additional internal lightdispersing features may have a gradually-increasing density in another direction from the another peripheral edge [532] towards the longitudinal axis [508],
  • the edge-lit lightguide panel [502] may include external light-dispersing features on the one [512] or the another one [510] of the pair of panel surfaces; and the another edge-lit lightguide panel [504] may include additional external light-dispersing features on the one [530] or the another one [528] of the another pair of panel surfaces.
  • the external light-dispersing features may include positive elements such as: pigmented dots; or micro-optical features such as spherical or elliptical lenses.
  • the external light-dispersing features may include negative elements such as hot-pressed textured surfaces such as micro-patterns e.g. micro-grooves, lenticular patterns, prisms, fresnels, conical arrays, pyramids, domes, or laser-ablated regions.
  • the external light-dispersing features may have a gradually-increasing density in a direction from the peripheral edge [514] towards the longitudinal axis [508]; and the additional external lightdispersing features may have a gradually-increasing density in another direction from the another peripheral edge [532] towards the longitudinal axis [508],
  • the another one [510] of the pair of panel surfaces may have a light-reflective layer [602]; and the another one [528] of the another pair of panel surfaces may have another light-reflective layer [604], Further in those examples [500] of the lighting system, the another one [510] of the pair of panel surfaces may have a specular light- reflective layer [602]; and the another one [528] of the another pair of panel surfaces may have another specular light-reflective layer [604], Additionally in those examples [500] of the lighting system, the another one [510] of the pair of panel surfaces may have a metallic light-reflective layer [602]; and the another one [528] of the another pair of panel surfaces may have another metallic light-reflective layer [604], In some of those examples [500] of the lighting system, the metallic light-reflective layers [602], [604] may have a composition that includes: silver, platinum, palladium, aluminum, zinc
  • the another one [510] of the pair of panel surfaces may have a light-reflective layer [602]; and the another one [528] of the another pair of panel surfaces may have another light-reflective layer [604]; and each of the light- reflective layers [602], [604] may have a minimum visible-light reflection value from any incident angle being at least about ninety percent (90%) or being at least about ninety-five percent (95%).
  • the plurality of the semiconductor lightemitting devices [520], [522] may include an array of the semiconductor light-emitting devices [520], [522] being mutually spaced apart along the longitudinal axis [508]; and the another plurality of the semiconductor light-emitting devices [538], [540] may include another array of the semiconductor light-emitting devices [538], [540] being mutually spaced apart along the longitudinal axis [508], Additionally in those examples [500] of the lighting system, the further plurality of the semiconductor light-emitting devices [556], [558] may include a further array of the semiconductor light-emitting devices [556], [558] being mutually spaced apart along the longitudinal axis [508],
  • the plurality of the semiconductor lightemitting devices [520], [522] may be collectively configured for generating the visible-light emissions [524], [526] as having a selectable perceived color point; and the another plurality of the semiconductor light-emitting devices [538], [540] may be collectively configured for generating the additional visible-light emissions [542], [544] as having another selectable perceived color point.
  • the further plurality of the semiconductor light-emitting devices [556], [558] may be collectively configured for generating the further visible-light emissions [560], [562] and the other visible-light emissions [561], [563] as respectively having a further selectable perceived color point and another selectable perceived color point.
  • the plurality of the semiconductor lightemitting devices [520], [522] may include a plurality of clusters of the semiconductor lightemitting devices [520], [522] being co-located together, each one of the plurality of clusters being collectively configured for generating the visible-light emissions [524], [526] as having a selectable perceived color point; and the another plurality of the semiconductor light-emitting devices [538], [540] may include another plurality of clusters of the semiconductor light-emitting devices [538], [540] being co-located together, each one of the another plurality of clusters being collectively configured for generating the additional visible-light emissions [542], [544] as having another selectable perceived color point.
  • the further plurality of the semiconductor light-emitting devices [556], [558] may include a further plurality of clusters of the semiconductor light-emitting devices [556], [558] being co-located together, each one of the further plurality of clusters being collectively configured for generating the further visible-light emissions [560], [562] as having a further selectable perceived color point.
  • the additional plurality of the semiconductor light-emitting devices [557], [559] may include an additional plurality of clusters of the semiconductor light-emitting devices [557], [559] being co-located together, each one of the additional plurality of clusters being collectively configured for generating the other visible-light emissions [561], [563] as having another selectable perceived color point.
  • each of the pluralities of clusters of the semiconductor light-emitting devices [520], [522], [538], [540], [556], [558], [557], [559] may include two or three or more co-located semiconductor light-emitting devices being configured for collectively generating the visible-light emissions [524], [526] and the additional visible-light emissions [542], [544] and the further visible-light emissions [560], [562] and the other visible- light emissions [561], [563] as having the respective selectable perceived color points.
  • a plurality of semiconductor light-emitting devices [520], [522], or a plurality of semiconductor light-emitting devices [538], [540], or a plurality of semiconductor light-emitting devices [556], [558], or a plurality of semiconductor light-emitting devices [557], [559] may be arranged in a chip-on-board (not shown) array, or in a discrete (not shown) array on a printed circuit board (not shown).
  • Semiconductor light-emitting device arrays including chip-on-board arrays and discrete arrays may be conventionally fabricated by persons of ordinary skill in the art.
  • the semiconductor light-emitting devices [520], [522], [538], [540], [556], [558], [557], [559] of the example [500] of the lighting system may be provided with drivers (not shown) and power supplies (not shown) being conventionally fabricated and configured by persons of ordinary skill in the art.
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [560], [562], (or in an analogous manner, a portion of the other visible-light emissions of the additional total internal reflection lens [507]), as being within a field angle of the total internal reflection lens [506] and for causing emission of another portion of the further visible-light emissions [560], [562] as being outside the field angle of the total internal reflection lens [506]; and the emission aperture [564] may be configured for redirecting some of the another portion of the further visible-light emissions [560], [562],
  • the total internal reflection lens [506] may, as examples, have a beam angle being within a range of between about thirty degrees (30°) and about ten degrees (10°). Additionally in those examples [500] of the lighting system, the total internal reflection lens [506] may, as examples have a field angle being within a range of between about sixty degrees (60°)
  • the emission aperture [564] may be positioned for redirecting a part of the another portion of the further visible-light emissions [560], [562] (or likewise of the other visible-light emissions [561], [563]) being emitted at the third light output interface [548] in directions deviating from the central light-emission axis [546] by greater than about seventy degrees (70°).
  • the emission aperture [564] may be positioned for redirecting a part of the another portion of the further visible- light emissions [560], [562] being emitted at the third light output interface [548] in directions deviating from the central light-emission axis [546] by greater than about sixty degrees (60°).
  • the lateral edges [578], [580], [582], [584] of the edge-lit lightguide panels [502], [504] may be linear; and the one [512] of the pair of panel surfaces may be generally flat; and the one [530] of the another pair of panel surfaces may be generally flat.
  • the flat panel surfaces [512], [530] of the emission aperture [564] may be cooperatively positioned for mechanically shielding and thus redirecting some of the further visible-light emissions [560], [562] and some of the other visible-light emissions [561], [563] being respectively emitted at the third light output interface [548] and at the fourth light output interface [549] in directions deviating from the central light-emission axis [546] by greater than about sixty degrees (60°).
  • redirection of the further visible-light emissions [560], [562] being emitted at the third light output interface [548] and of the other visible-light emissions [561], [563] being emitted at the fourth light output interface [549] in high-angle directions being greater than about sixty degrees (60°) or seventy degrees (70°) may substantially reduce objectionable glare.
  • the total internal reflection lens [506] (and likewise the additional total internal lens [507]) may have a beam angle being within a range of between about thirty degrees (30°) and about twenty degrees (20°). Further in those examples [500] of the lighting system, the total internal reflection lens [506] may have a field angle being within a range of between about sixty degrees (60°) and about forty degrees (40°).
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [560], [562] as being within the field angle of the total internal reflection lens [506] and for causing emission of another portion of the further visible-light emissions [560], [562] as being outside the field angle of the total internal reflection lens [506]; and the emission aperture [564] may be configured for redirecting some of the another portion of the further visible-light emissions [560], [562], Further in those examples [500], the emission aperture [564] may be positioned for redirecting a part of the another portion of the further visible- light emissions [560], [562] being emitted at the third light output interface [548] in directions deviating from the central light-emission axis [546] by greater than about sixty degrees (60°), or deviating from the central light-emission axis by greater than about seventy degrees (70°).
  • the total internal reflection lens [506] (and likewise the additional total internal lens [507]) may have a beam angle being within a range of between about twenty degrees (20°) and about ten degrees (10°); or within a range of between about fifteen degrees (15°) and about ten degrees (10°). Further in those examples [500] of the lighting system, the total internal reflection lens [506] may have a field angle being respectively within a range of between about forty degrees (40°) and about twenty degrees (20°), or within a range of between about thirty degrees (30°) and about twenty degrees (20°).
  • the third light output interface [548] may include internal or external light-dispersing features; and the third light output interface [548] may cause the total internal reflection lens [506] to have an effective field angle being within a range of between about sixty degrees (60°) and about forty degrees (40°).
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [560], [562] as being within the effective field angle of the total internal reflection lens [506] and for causing emission of another portion of the further visible-light emissions [560], [562] as being outside the effective field angle of the total internal reflection lens [506]; and the emission aperture [564] may be configured for redirecting some of the another portion of the further visible- light emissions [560], [562], Further in those examples [500], the emission aperture [564] may be positioned for redirecting a part of the another portion of the further visible-light emissions [560], [562] (or likewise the other visible-light emissions [561], [563]) being emitted at the third light output interface [548] in directions deviating from the central light-emission axis [546] by greater than about sixty degrees (60°), or deviating from the central light-emission axis by greater than about seventy degrees
  • the lighting system may include a controller (not shown) for the visible-light source [518] and for the another visible-light source [536] and for the further visible- light source [554] and for the additional visible-light source [555], the controller being configured for causing the visible-light emissions [524], [526] to have a selectable perceived color point and for causing the additional visible-light emissions [542], [544] to have another selectable perceived color point and for causing the further visible-light emissions [560], [562] to have a further selectable perceived color point and for causing the other visible-light emissions [561], [563] to have an additional selectable perceived color point.
  • the controller may be configured for causing the visible-light emissions [524], [526] to have a selectable and adjustable intensity and for causing the additional visible-light emissions [542], [544] to have another selectable and adjustable intensity and for causing the further visible- light emissions [560], [562] to have a further selectable and adjustable intensity and for causing the other visible-light emissions [561], [563] to have an additional selectable and adjustable intensity.
  • the controller may be configured for causing the combined visible-light emissions [566], [568] to generate a downlighting pattern being: wall graze, table with wall fill, wall wash left, wall wash right, double wall wash, wall wash left plus floor, wall wash right plus floor, room, or batwing.
  • the controller may be configured for selection among a plurality of different pre-programmed combinations of the intensities for the visible-light emissions [524], [526], the additional visible-light emissions [542], [544], the further visible-light emissions [560], [562] and the other visible-light emissions [561], [563], Further in those examples [500] of the lighting system, the controller may be configured for adjusting, over a selectable time period, the intensities for the visible-light emissions [524], [526], the additional visible-light emissions [542], [544], the further visible-light emissions [560], [562] and the other visible-light emissions [561], [563] from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the lighting system may further include an ambient light sensor (not shown); and the controller may be configured, in response to the ambient light sensor, for adjusting the intensities for the visible- light emissions [524], [526], the additional visible-light emissions [542], [544], the further visible- light emissions [560], [562], and the other visible-light emissions [561], [563],
  • the lighting system may include a controller (not shown) for the visible-light source [518] being configured for causing the visible-light emissions [524], [526] to have a selectable perceived color point; and may include another controller (not shown) for the another visible-light source [536] being configured for causing the additional visible-light emissions [542], [544] to have another selectable perceived color point; and may include a further controller (not shown) for the further visible-light source [554] being configured for causing the further visible-light emissions [560], [562] to have a further selectable perceived color point; and may include an additional controller (not shown) for the additional visible-light source [555] being configured for causing the other visible-light emissions [561], [563] to have an additional selectable perceived color point.
  • the controller may be configured for causing the visible-light emissions [524], [526] to have a selectable and adjustable intensity; and the another controller may be configured for causing the additional visible-light emissions [542], [544] to have another selectable and adjustable intensity; and the further controller may be configured for causing the further visible-light emissions [560], [562] to have a further selectable and adjustable intensity; and the additional controller may be configured for causing the other visible-light emissions [561], [563] to have an additional selectable and adjustable intensity.
  • the controller and the another controller and the further controller and the additional controller may be collectively configured for causing the combined visible-light emissions [566], [568] to generate a down-lighting pattern being: wall graze, table with wall fill, wall wash left, wall wash right, double wall wash, wall wash left plus floor, wall wash right plus floor, room, or batwing.
  • the controller and the another controller and the further controller and the additional controller may be collectively configured for selection among a plurality of different pre-programmed combinations of the intensities for the visible-light emissions [524], [526], the additional visible-light emissions [542], [544], the further visible-light emissions [560], [562]; and the other visible-light emissions [561], [563],
  • the controller and the another controller and the further controller and the additional controller may be collectively configured for adjusting, over a selectable time period, the intensities for the visible-light emissions [524], [526], the additional visible-light emissions [542], [544], the further visible-light emissions [560], [562], and the other visible-light emissions [561], [563], from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the lighting system may also include an ambient light sensor; and the controller and the another controller and the further controller and the additional controller may be collectively configured, in response to the ambient light sensor, for adjusting the intensities for the visible-light emissions [524], [526], the additional visible-light emissions [542], [544], and the further visible-light emissions [560], [562], and the other visible-light emissions [561], [563],
  • Fig. 9 is a schematic top perspective view showing an example [900] of an implementation of a lighting system.
  • Fig. 10 is a schematic cross-sectional view taken along the line 10-10 showing the example [900] of the lighting system.
  • Fig. 11 is a schematic cross-sectional view taken along the line 11-11 showing the example [900] of the lighting system.
  • Fig. 12 is a schematic bottom perspective view taken along the line 12 showing the example [900] of an implementation of a lighting system.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31. It is understood throughout this specification that a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [900] of the implementation of the lighting system includes: an edge-lit lightguide panel [902]; another edge-lit lightguide panel [904]; and a bowl reflector [906],
  • the edge-lit lightguide panel [902] is extended along a longitudinal axis [908] of the lighting system.
  • the edge-lit lightguide panel [902] in the example [900] of the lighting system further has a pair of mutually-opposing panel surfaces [910], [912],
  • the edge-lit lightguide panel [902] in the example [900] of the lighting system also has a peripheral edge [914] being extended along and spaced transversely away from the longitudinal axis [908],
  • a one [912] of the pair of panel surfaces includes a first light output interface [916],
  • the example [900] of the lighting system also includes a visible-light source [918] including a plurality of semiconductor light-emitting devices [920], [922],
  • the visible-light source [918] is configured for generating visible-light emissions [924], [926] from the plurality of semiconductor light-emitting devices [920], [922],
  • the visible-light source [918] is located along the peripheral edge [914] for directing the visible-light emissions [924], [926] into the edge-lit lightguide panel [902],
  • the another edge-lit lightguide panel [904] is extended along the longitudinal axis [908], Additionally in the example [900] of the lighting system, the another edge-lit lightguide panel [904] has another pair of mutually-opposing panel surfaces [928], [930], In the example [900] of the lighting system, the another edge-lit lightguide panel [904] has another peripheral edge [932] being extended along and spaced transversely away from the longitudinal axis [908], Further, a one [930] of the another pair of panel surfaces in the example [900] of the lighting system includes a second light output interface [934],
  • the example [900] of the lighting system additionally includes another visible-light source [936] including another plurality of semiconductor light-emitting devices [938], [940],
  • the another visible-light source [936] is configured for generating additional visible-light emissions [942], [944] from the another plurality of semiconductor light-emitting devices [938], [940],
  • the another visible-light source [936] is located along the another peripheral edge [932] for directing the additional visible-light emissions [942], [944] into the another edge-lit lightguide panel [904],
  • the bowl reflector [906] has a central light-emission axis [946] being transverse to the longitudinal axis [908],
  • the bowl reflector [906] in the example [900] of the lighting system includes a third light output interface [948] being located between the first and second light output interfaces [916], [934],
  • the third light output interface [948] is spaced apart from a central light input interface [950] by a visible-light - reflective side surface [952],
  • the visible-light - reflective side surface [952] in the example [900] of the lighting system is extended along the central lightemission axis [946] and defines a portion of a cavity [947],
  • the bowl reflector [906] has a further visible-light source [954] including a further plurality of semiconductor light-emitting devices [956], [958], The further visible
  • the edge-lit lightguide panel [902] may direct the visible-light emissions [924], [926] for emission from the first light output interface [916]; and the another edge-lit lightguide panel [904] may direct the additional visible-light emissions [942], [944] for emission from the second light output interface [934]; and the bowl reflector [906] may direct the further visible-light emissions [960], [962] for emission from the third light output interface [948], [00205]
  • the first, second and third light output interfaces [916], [934], [948] cooperatively define an emission aperture [964] for forming combined visible-light emissions [966], [968] including the visible-light emissions [924], [926], the additional visible-light emissions [942], [944], and the further visible-light emissions [960], [962],
  • the emission aperture [964] forms a shielding zone [
  • the bowl reflector [906] may be a converging bowl reflector [906] being configured for causing convergence of the further visible- light emissions [960], [962] in their travel along the central light-emission axis [946] toward the third light output interface [948], Further in those examples [900] of the lighting system, the bowl reflector [906] may be a converging bowl reflector [906] being configured for causing convergence of the further visible-light emissions [960], [962] along the central light-emission axis [946] as having a beam angle being within a range of between about thirty degrees (30°) and about ten degrees (10°).
  • the visible-light - reflective side surface [952] of the bowl reflector [906] may be a specular light-reflective surface.
  • the visible-light - reflective side surface [952] of the bowl reflector [906] may be a metallic light-reflective surface.
  • the metallic layer of the visible-light - reflective side surface [952] may have a composition that includes: silver, platinum, palladium, aluminum, zinc, gold, iron, copper, tin, antimony, titanium, chromium, nickel, or molybdenum.
  • the visible-light - reflective side surface [952] of the bowl reflector [906] may have a minimum visible-light reflection value from any incident angle being: at least about ninety percent (90%); or at least about ninety-five percent (95%).
  • the visible-light - reflective side surface [952] of the bowl reflector [906] may have a maximum visible-light transmission value from any incident angle being: no greater than about ten percent (10%); or no greater than about five percent (5%).
  • the visible-light - reflective side surface [952] of the bowl reflector [906] may be configured for reflecting the further visible-light emissions [960], [962] toward a horizon [963] of the bowl reflector [906] as having a beam angle being within a range of between about ten degrees (10°) and about thirty degrees (30°).
  • the visible-light - reflective side surface [952] of the bowl reflector [906] may be configured for reflecting the further visible-light emissions [960], [962] toward the horizon [963] of the bowl reflector [906] as having a field angle being within a range of between about twenty degrees (20°) and about sixty degrees (60°).
  • a portion of the visible-light - reflective side surface [952] of the bowl reflector [906] may be a parabolic surface.
  • a portion of the visible-light - reflective side surface [952] of the bowl reflector [906] may be a part of an elliptic paraboloid or a part of a paraboloid of revolution.
  • a portion of the visible-light - reflective side surface [952] of the bowl reflector [906] may be a multi-segmented parabolic surface.
  • the edge-lit lightguide panel [902] may have a first pair of lateral edges [978], [980] being mutually spaced apart along the longitudinal axis [908]; and the another edge-lit lightguide panel [904] may have a second pair of lateral edges [982], [984] being mutually spaced apart along the longitudinal axis [908], Further in those examples [900] of the lighting system, each one of the lateral edges [978], [980], [982], [984] may be curvilinear; and the one [912] of the pair of panel surfaces may be concave; and the one [930] of the another pair of panel surfaces may be concave.
  • the edge-lit lightguide panel [902] may be configured for directing the visible-light emissions [924], [926] in first directions towards the longitudinal axis [908]; and the another edge-lit lightguide panel [904] may be configured for directing the additional visible-light emissions [942], [944] in second directions, being symmetrically opposed to the first directions, towards the longitudinal axis [908],
  • the edge-lit lightguide panel [902] may further direct the visible-light emissions [924], [926] for emission from the first light output interface [916];
  • the another edge-lit lightguide panel [904] may further direct the additional visible-light emissions [942], [944] for emission from the second light output interface [934]; and the bowl reflector [906] may direct the further visible-light emissions [960], [962] for emission from the third light output interface [948],
  • the edge-lit lightguide panel [902] and the another edge-lit lightguide panel [904] may be integrally formed together with the bowl reflector [906],
  • the edge-lit lightguide panel [902] may have a central edge represented by a dashed line [986] being extended along the longitudinal axis [908] and being spaced transversely away from the peripheral edge [914]; and the another edge-lit lightguide panel [904] may have another central edge represented by a dashed line [988] being extended along the longitudinal axis [908] and being spaced transversely away from the another peripheral edge [932]; and the bowl reflector [906] may be located between and attached to the central edge [986] and the another central edge [988],
  • the edge-lit lightguide panel [902] may include internal light-dispersing features; and the another edge-lit lightguide panel [904] may include additional internal light-dispersing features.
  • the internal light-dispersing features may include positive elements such as: particles having various shapes being e.g. spheroidal or polygonal; particles having various material compositions including, e.g., phosphors, quantum dots, and pigmented dots; micro-optical features such as spherical or elliptical lenses, and reflective micro-scale particles.
  • the internal light-dispersing features may include negative elements such as: hot-pressed micro-patterns e.g. micro-grooves, lenticular patterns, prisms, fresnels, conical arrays, pyramids, or domes.
  • the internal light-dispersing features may have a gradually-increasing density in a direction from the peripheral edge [914] towards the longitudinal axis [908]; and the additional internal lightdispersing features may have a gradually-increasing density in another direction from the another peripheral edge [932] towards the longitudinal axis [908],
  • the edge-lit lightguide panel [902] may include external light-dispersing features on the one [912] or the another one [910] of the pair of panel surfaces; and the another edge-lit lightguide panel [904] may include additional external light-dispersing features on the one [930] or the another one [928] of the another pair of panel surfaces.
  • the external light-dispersing features may include positive elements such as: pigmented dots; or micro-optical features such as spherical or elliptical lenses.
  • the external light-dispersing features may include negative elements such as: hot-pressed textured surfaces such as micro-patterns e.g. micro-grooves, lenticular patterns, prisms, fresnels, conical arrays, pyramids, domes, or laser-ablated regions.
  • the external light-dispersing features may have a gradually-increasing density in a direction from the peripheral edge [914] towards the longitudinal axis [908]; and the additional external lightdispersing features may have a gradually-increasing density in another direction from the another peripheral edge [932] towards the longitudinal axis [908],
  • the another one [910] of the pair of panel surfaces may have a light-reflective layer [1002]; and the another one [928] of the another pair of panel surfaces may have another light-reflective layer [1004], Further in those examples [900] of the lighting system, the another one [910] of the pair of panel surfaces may have a specular light- reflective layer [1002]; and the another one [928] of the another pair of panel surfaces may have another specular light-reflective layer [1004], Additionally in those examples [900] of the lighting system, the another one [910] of the pair of panel surfaces may have a metallic light-reflective layer [1002]; and the another one [928] of the another pair of panel surfaces may have another metallic light-reflective layer [1004], In some of those examples [900] of the lighting system, the metallic light-reflective layers [1002], [1004] may have a composition that includes: silver, platinum, palladium
  • the another one [910] of the pair of panel surfaces may have a light-reflective layer [1002]; and the another one [928] of the another pair of panel surfaces may have another light-reflective layer [1004]; and each of the light-reflective layers [1002], [1004] may have a minimum visible-light reflection value from any incident angle being at least about ninety percent (90%) or being at least about ninety-five percent (95%).
  • the plurality of the semiconductor lightemitting devices [920], [922] may include an array of the semiconductor light-emitting devices [920], [922] being mutually spaced apart along the longitudinal axis [908]; and the another plurality of the semiconductor light-emitting devices [938], [940] may include another array of the semiconductor light-emitting devices [938], [940] being mutually spaced apart along the longitudinal axis [908], Additionally in those examples [900] of the lighting system, the further plurality of the semiconductor light-emitting devices [956], [958] may include a further array of the semiconductor light-emitting devices [956], [958] being mutually spaced apart along the longitudinal axis [908],
  • the plurality of the semiconductor lightemitting devices [920], [922] may be collectively configured for generating the visible-light emissions [924], [926] as having a selectable perceived color point; and the another plurality of the semiconductor light-emitting devices [938], [940] may be collectively configured for generating the additional visible-light emissions [942], [944] as having another selectable perceived color point.
  • the further plurality of the semiconductor light-emitting devices [956], [958] may be collectively configured for generating the further visible-light emissions [960], [962] as having a further selectable perceived color point.
  • the plurality of the semiconductor lightemitting devices [920], [922] may include a plurality of clusters of the semiconductor lightemitting devices [920], [922] being co-located together, each one of the plurality of clusters being collectively configured for generating the visible-light emissions [924], [926] as having a selectable perceived color point; and the another plurality of the semiconductor light-emitting devices [938], [940] may include another plurality of clusters of the semiconductor light-emitting devices [938], [940] being co-located together, each one of the another plurality of clusters being collectively configured for generating the additional visible-light emissions [942], [944] as having another selectable perceived color point.
  • the further plurality of the semiconductor light-emitting devices [956], [958] may include a further plurality of clusters of the semiconductor light-emitting devices [956], [958] being co-located together, each one of the further plurality of clusters being collectively configured for generating the further visible-light emissions [960], [962] as having a further selectable perceived color point.
  • each of the pluralities of clusters of the semiconductor light-emitting devices [920], [922], [938], [940], [956], [958] may include two or three or more co-located semiconductor light-emitting devices being configured for collectively generating the visible-light emissions [924], [926] and the additional visible-light emissions [942], [944] and the further visible-light emissions [960], [962] as having the respective selectable perceived color points.
  • a plurality of semiconductor light-emitting devices [920], [922], or a plurality of semiconductor light-emitting devices [938], [940], or a plurality of semiconductor light-emitting devices [956], [958] may be arranged in a chip-on-board (not shown) array, or in a discrete (not shown) array on a printed circuit board (not shown).
  • Semiconductor light-emitting device arrays including chip-on-board arrays and discrete arrays may be conventionally fabricated by persons of ordinary skill in the art.
  • the semiconductor light-emitting devices [920], [922], [938], [940], [956], [958] of the example [900] of the lighting system may be provided with drivers (not shown) and power supplies (not shown) being conventionally fabricated and configured by persons of ordinary skill in the art.
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [960], [962] as being within a field angle of the bowl reflector [906] and for causing emission of another portion of the further visible-light emissions [960], [962] as being outside the field angle of the bowl reflector [906]; and the emission aperture [964] may be configured for redirecting some of the another portion of the further visible-light emissions [960], [962],
  • the bowl reflector [906] may, as examples, have a beam angle being within a range of between about thirty degrees (30°) and about ten degrees (10°). Additionally in those examples [900] of the lighting system, the bowl reflector [906] may, as examples have a field angle being within a range of between about sixty degrees (60°) and about twenty degrees (20°).
  • the emission aperture [964] may be positioned for redirecting a part of the another portion of the further visible-light emissions [960], [962] being emitted at the third light output interface [948] in directions deviating from the central lightemission axis [946] by greater than about seventy degrees (70°).
  • the emission aperture [964] may be positioned for redirecting a part of the another portion of the further visible-light emissions [960], [962] being emitted at the third light output interface [948] in directions deviating from the central light-emission axis [946] by greater than about sixty degrees (60°).
  • the lateral edges [978], [980], [982], [984] of the edge-lit lightguide panels [902], [904] may be curvilinear; and the one [912] of the pair of panel surfaces may be concave; and the one [930] of the another pair of panel surfaces may be concave.
  • the concave panel surfaces [912], [930] of the emission aperture [964] may be cooperatively positioned for mechanically shielding and thus redirecting some of the further visible-light emissions [960], [962] being emitted at the third light output interface [948] in directions deviating from the central light-emission axis [946] by greater than about sixty degrees (60°). Additionally in that example [900] of the lighting system, redirection of the visible-light emissions [960], [962] being emitted at the third light output interface [948] in high-angle directions being greater than about sixty degrees (60°) or seventy degrees (70°) may substantially reduce objectionable glare.
  • the bowl reflector [906] may have a beam angle being within a range of between about thirty degrees (30°) and about twenty degrees (20°). Further in those examples [900] of the lighting system, the bowl reflector [906] may have a field angle being within a range of between about sixty degrees (60°) and about forty degrees (40°).
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [960], [962] as being within the field angle of the bowl reflector [906] and for causing emission of another portion of the further visible-light emissions [960], [962] as being outside the field angle of the bowl reflector [906]; and the emission aperture [964] may be configured for redirecting some of the another portion of the further visible- light emissions [960], [962], Further in those examples [900], the emission aperture [964] may be positioned for redirecting a part of the another portion of the further visible-light emissions [960], [962] being emitted at the third light output interface [948] in directions deviating from the central light-emission axis [946] by greater than about sixty degrees (60°), or deviating from the central light-emission axis by greater than about seventy degrees (70°).
  • the bowl reflector [906] may have a beam angle being within a range of between about twenty degrees (20°) and about ten degrees (10°); or within a range ofbetween about fifteen degrees (15°) and about ten degrees (10°). Further in those examples [900] of the lighting system, the bowl reflector [906] may have a field angle being respectively within a range of between about forty degrees (40°) and about twenty degrees (20°), or within a range of between about thirty degrees (30°) and about twenty degrees (20°).
  • the third light output interface [948] may include internal or external light-dispersing features; and the third light output interface [948] may cause the bowl reflector [906] to have an effective field angle being within a range of between about sixty degrees (60°) and about forty degrees (40°).
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [960], [962] as being within the effective field angle of the bowl reflector [906] and for causing emission of another portion of the further visible-light emissions [960], [962] as being outside the effective field angle of the bowl reflector [906]; and the emission aperture [964] may be configured for redirecting some of the another portion of the further visible-light emissions [960], [962], Further in those examples [900], the emission aperture [964] may be positioned for redirecting a part of the another portion of the further visible-light emissions [960], [962] being emitted at the third light output interface [948] in directions deviating from the central lightemission axis [946] by greater than about sixty degrees (60°), or deviating from the central lightemission axis by greater than about seventy degrees (70°).
  • the lighting system may include a controller (not shown) for the visible-light source [918] and for the another visible-light source [936] and for the further visible- light source [954], the controller being configured for causing the visible-light emissions [924], [926] to have a selectable perceived color point and for causing the additional visible-light emissions [942], [944] to have another selectable perceived color point and for causing the further visible-light emissions [960], [962] to have a further selectable perceived color point.
  • the controller may be configured for causing the visible-light emissions [924], [926] to have a selectable and adjustable intensity and for causing the additional visible-light emissions [942], [944] to have another selectable and adjustable intensity and for causing the further visible-light emissions [960], [962] to have a further selectable and adjustable intensity.
  • the controller may be configured for causing the combined visible-light emissions [966], [968] to generate a down-lighting pattern being: wall graze, table with wall fill, wall wash left, wall wash right, double wall wash, wall wash left plus floor, wall wash right plus floor, room, or batwing.
  • the controller may be configured for selection among a plurality of different pre-programmed combinations of the intensities for the visible-light emissions [924], [926], the additional visible-light emissions [942], [944], and the further visible- light emissions [960], [962], Further in those examples [900] of the lighting system, the controller may be configured for adjusting, over a selectable time period, the intensities for the visible-light emissions [924], [926], the additional visible-light emissions [942], [944], and the further visible- light emissions [960], [962] from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the lighting system may further include an ambient light sensor (not shown); and the controller may be configured, in response to the ambient light sensor, for adjusting the intensities for the visible- light emissions [924], [926], the additional visible-light emissions [942], [944], and the further visible-light emissions [960], [962],
  • the lighting system may include a controller (not shown) for the visible-light source [918] being configured for causing the visible-light emissions [924], [926] to have a selectable perceived color point; and may include another controller (not shown) for the another visible-light source [936] being configured for causing the additional visible-light emissions [942], [944] to have another selectable perceived color point; and may include a further controller (not shown) for the further visible-light source [954] being configured for causing the further visible-light emissions [960], [962] to have a further selectable perceived color point.
  • the controller may be configured for causing the visible-light emissions [924], [926] to have a selectable and adjustable intensity; and the another controller may be configured for causing the additional visible-light emissions [942], [944] to have another selectable and adjustable intensity; and the further controller may be configured for causing the further visible-light emissions [960], [962] to have a further selectable and adjustable intensity.
  • the controller and the another controller and the further controller may be collectively configured for causing the combined visible-light emissions [966], [968] to generate a down-lighting pattern being: wall graze, table with wall fill, wall wash left, wall wash right, double wall wash, wall wash left plus floor, wall wash right plus floor, room, or batwing.
  • the controller and the another controller and the further controller may be collectively configured for selection among a plurality of different pre-programmed combinations of the intensities for the visible-light emissions [924], [926], the additional visible-light emissions [942], [944], and the further visible-light emissions [960], [962], Further in those examples [900] of the lighting system, the controller and the another controller and the further controller may be collectively configured for adjusting, over a selectable time period, the intensities for the visible- light emissions [924], [926], the additional visible-light emissions [942], [944], and the further visible-light emissions [960], [962] from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the lighting system may also include an ambient light sensor; and the controller and the another controller and the further controller may be collectively configured, in response to the ambient light sensor, for adjusting the intensities for the visible-light emissions [924], [926], the additional visible-light emissions [942], [944], and the further visible-light emissions [960], [962],
  • Fig. 13 is a schematic top perspective view showing an example [1300] of an implementation of a lighting system.
  • Fig. 14 is a schematic cross-sectional view taken along the line 14-14 showing the example [1300] of the lighting system.
  • Fig. 15 is a schematic cross- sectional view taken along the line 15-15 showing the example [1300] of the lighting system.
  • Fig. 16 is a schematic bottom perspective view taken along the line 16 showing the example [1300] of an implementation of a lighting system.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31. It is understood throughout this specification that a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [1300] of the implementation of the lighting system includes: an edge-lit lightguide panel [1302]; another edge-lit lightguide panel [1304]; a bowl reflector [1306]; and an additional bowl reflector [1307],
  • the edge- lit lightguide panel [1302] is extended along a longitudinal axis [1308] of the lighting system.
  • the edge-lit lightguide panel [1302] in the example [1300] of the lighting system further has a pair of mutually-opposing panel surfaces [1310], [1312],
  • the edge-lit lightguide panel [1302] in the example [1300] of the lighting system also has a peripheral edge [1314] being extended along and spaced transversely away from the longitudinal axis [1308],
  • a one [1312] of the pair of panel surfaces includes a first light output interface [1316], [00233]
  • the example [1300] of the lighting system also includes a visible-light source [1318] including a plurality of semiconductor light-emitting devices [1320], [1322],
  • the visible-light source [1318] is configured for generating visible- light emissions [1324], [1326] from the plurality of semiconductor light-emitting devices [1320], [1322], Further in the example [1300] of the lighting system, the visible-light source
  • the example [1300] of the lighting system additionally includes another visible-light source [1336] including another plurality of semiconductor light-emitting devices [1338], [1340],
  • the another visible-light source [1336] is configured for generating additional visible-light emissions [1342], [1344] from the another plurality of semiconductor light-emitting devices [1338], [1340],
  • the another visible-light source [1336] is located along the another peripheral edge [1332] for directing the additional visible-light emissions [1342], [1344] into the another edge-lit lightguide panel [1304],
  • the bowl reflector [1306] has a central light-emission axis [1346] being transverse to the longitudinal axis [1308],
  • the bowl reflector [1306] in the example [1300] of the lighting system includes a third light output interface [1348] being located between the first and second light output interfaces [1316], [1334],
  • the third light output interface [1348] is spaced apart from a central light input interface [1350] by a visible-light - reflective side surface [1352],
  • the visible-light - reflective side surface [1352] in the example [1300] of the lighting system is extended along the central light-emission axis [1346] and defines a portion of a cavity [1347],
  • the bowl reflector [1306] has a further visible-light source [1354] including a further plurality of semiconductor light-emitting devices [1356
  • the additional bowl reflector [1307] has an additional central light-emission axis [1347] being transverse to the longitudinal axis [1308],
  • the additional bowl reflector [1307] in the example [1300] of the lighting system includes a fourth light output interface [1349] being spaced apart along the longitudinal axis [1308] away from the third light output interface [1348] and being located between the first and second light output interfaces [1316], [1334],
  • the fourth light output interface [1349] is spaced apart from an additional central light input interface [1351] by an additional visible-light - reflective side surface [1353],
  • the additional visible-light - reflective side surface [1353] in the example [1300] of the lighting system is extended along the additional central light-emission axis [1347] and defines a portion of an additional cavity [1347],
  • the additional bowl reflector [1313] in the example [1300] of the lighting system is extended along the additional central light-emission axis [1347] and defines
  • the first, second, third and fourth light output interfaces [1316], [1334], [1348], [1349] cooperatively define an emission aperture [1364] for forming combined visible-light emissions [1366], [1368] including the visible-light emissions [1324], [1326], the additional visible-light emissions [1342], [1344], the further visible-light emissions [1360], [1362], and the other visible-light emissions [1361], [1363],
  • the emission aperture [1364] forms a shielding zone [1370] for redirecting some of the combined visible-light emissions [1366], [1368],
  • the visible-light - reflective side surface [1352] and the additional visible-light - reflective side surface [1353] each may have a frusto- conical cross-sectional profile in both of the directions of the lines 14-14 and 15-15 being perpendicular to the longitudinal axis [1308],
  • the additional bowl reflector [1307] may have any combination of the further structural and performance features discussed herein with regard to the bowl reflector [1306]
  • the lighting system may include (not shown) further bowl reflectors in addition to the bowl reflectors [1306], [1307].
  • such further bowl reflectors may have any combination of the further structural and performance features discussed herein with regard to the bowl reflectors [1306] and [1307], and may be mutually spaced apart in the same manner by which the bowl reflectors [1306], [1307] are spaced apart along the longitudinal axi
  • the bowl reflector [1306] (and likewise the additional bowl reflector [1307]) may be a converging bowl reflector [1306] being configured for causing convergence of the further visible-light emissions [1360], [1362] in their travel along the central light-emission axis [1346] toward the third light output interface [1348],
  • the visible-light - reflective side surface [1352] of the bowl reflector [1306] may be configured for reflecting the further visible-light emissions [1360], [1362] toward a horizon [1363] of the bowl reflector [1306] as having a beam angle being within a range of between about ten degrees (10°) and about thirty degrees (30°).
  • the visible-light - reflective side surface [1352] of the bowl reflector [1306] may be configured for reflecting the further visible-light emissions [1360], [1362] toward a horizon [1363] of the bowl reflector [1306] as having a field angle being within a range of between about twenty degrees (20°) and about sixty degrees (60°).
  • the visible-light - reflective side surface [1352] of the bowl reflector [1306] may be a specular light-reflective surface.
  • the visible-light - reflective side surface [1352] of the bowl reflector [1306] may be a metallic light-reflective surface.
  • the metallic layer of the visible-light - reflective side surface [1352] may have a composition that includes: silver, platinum, palladium, aluminum, zinc, gold, iron, copper, tin, antimony, titanium, chromium, nickel, or molybdenum.
  • the visible-light - reflective side surface [1352] of the bowl reflector [1306] may have a minimum visible-light reflection value from any incident angle being: at least about ninety percent (90%); or at least about ninety-five percent (95%).
  • the visible-light - reflective side surface [1352] of the bowl reflector [1306] may have a maximum visible-light transmission value from any incident angle being: no greater than about ten percent (10%); or no greater than about five percent (5%).
  • a portion of the visible-light - reflective side surface [1352] of the bowl reflector [1306] may be a parabolic surface.
  • a portion of the visible-light - reflective side surface [1352] of the bowl reflector [1306] may be a part of an elliptic paraboloid or a part of a paraboloid of revolution.
  • a portion of the visible-light - reflective side surface [1352] of the bowl reflector [1306] may be a multi-segmented parabolic surface.
  • the visible-light - reflective side surface [1352] may include a plurality of vertically-faceted sections being mutually spaced apart around and joined together around the central light-emission axis [1346], Also in those additional examples [1300] of the lighting system, each one of the vertically-faceted sections may have a generally pie-wedge - shaped perimeter.
  • each one of the vertically- faceted sections may form a one of a plurality of facets of the visible-light - reflective side surface [1352]; and each one of the facets may have a concave visible-light reflective surface [1352], Also in those additional examples [1300] of the lighting system, each one of the vertically-faceted sections may form a one of a plurality of facets of the visible-light - reflective side surface [1352]; and each one of the facets may have a convex visible-light reflective surface [1352], Further in those additional examples [1300] of the lighting system, each one of the vertically -faceted sections may form a one of a plurality of facets of the visible-light - reflective side surface [1352]; and each one of the facets may have a generally flat visible-light reflective surface.
  • either or both of the bowl reflectors [1306], [1307], and any further such bowl reflectors included in the example [1300] of the lighting system may be substituted by a lighting system as is disclosed in commonly-owned Xin Zhang et al., Patent Cooperation Treaty International patent application serial No. PCT/US2018/016662 filed on February 2, 2018 and entitled “Lighting Systems Generating Partially-Collimated Light Emissions,” the entirety of which hereby is incorporated herein by reference.
  • the edge-lit lightguide panel [1302] may have a first pair of lateral edges [1378], [1380] being mutually spaced apart along the longitudinal axis [1308]; and the another edge-lit lightguide panel [1304] may have a second pair of lateral edges [1382], [1384] being mutually spaced apart along the longitudinal axis [1308], Further in those examples [1300] of the lighting system, each one of the lateral edges [1378], [1380], [1382], [1384] may be linear; and the one [1312] of the pair of panel surfaces may be generally flat; and the one [1330] of the another pair of panel surfaces may be generally flat.
  • the edge-lit lightguide panel [1302] may be configured for directing the visible-light emissions [1324], [1326] in first directions towards the longitudinal axis [1308]; and the another edge-lit lightguide panel [1304] may be configured for directing the additional visible-light emissions [1342], [1344] in second directions, being symmetrically opposed to the first directions, towards the longitudinal axis [1308],
  • the edge-lit lightguide panel [1302] may further direct the visible-light emissions [1324], [1326] for emission from the first light output interface [1316]; and the another edge-lit lightguide panel [1304] may further direct the additional visible-light emissions [1342], [1344] for emission from the second light output interface [1334]; and the bowl reflector [1306] may direct the further visible-light emissions [1360], [1362] for emission from the third light output interface [1348]; and the another bowl reflector [1307] may
  • the edge-lit lightguide panel [1302] and the another edge-lit lightguide panel [1304] may be integrally formed together with the bowl reflectors [1306], [1307],
  • the edge-lit lightguide panel [1302] may have a central edge represented by a dashed line [1386] being extended along the longitudinal axis [1308] and being spaced transversely away from the peripheral edge [1314]; and the another edge-lit lightguide panel [1304] may have another central edge represented by a dashed line [1388] being extended along the longitudinal axis [1308] and being spaced transversely away from the another peripheral edge [1332]; and the bowl reflectors [1306], [1307] may be located between and attached to the central edge [1386] and the another central edge [1388], [00249]
  • the edge-lit lightguide panel [1302] may have a central edge represented by a dashed line [1386] being extended along the longitudinal axis [1308] and being spaced trans
  • the internal light-dispersing features may include positive elements such as: particles having various shapes being e.g. spheroidal or polygonal; particles having various material compositions including, e.g., phosphors, quantum dots, and pigmented dots; micro-optical features such as spherical or elliptical lenses, and reflective micro-scale particles.
  • the internal light-dispersing features may include negative elements such as: hot-pressed micro-patterns e.g. micro-grooves, lenticular patterns, prisms, fresnels, conical arrays, pyramids, or domes.
  • the internal light-dispersing features may have a gradually-increasing density in a direction from the peripheral edge [1314] towards the longitudinal axis [1308]; and the additional internal light-dispersing features may have a gradually-increasing density in another direction from the another peripheral edge [1332] towards the longitudinal axis [1308],
  • the edge-lit lightguide panel [1302] may include external light-dispersing features on the one [1312] or the another one [1310] of the pair of panel surfaces; and the another edge-lit lightguide panel [1304] may include additional external light-dispersing features on the one [1330] or the another one [1328] of the another pair of panel surfaces.
  • the external light-dispersing features may include positive elements such as: pigmented dots; or micro-optical features such as spherical or elliptical lenses.
  • the external light-dispersing features may include negative elements such as: hot-pressed textured surfaces such as micro-patterns e.g. micro-grooves, lenticular patterns, prisms, fresnels, conical arrays, pyramids, domes, or laser-ablated regions.
  • the external light-dispersing features may have a gradually-increasing density in a direction from the peripheral edge [1314] towards the longitudinal axis [1308]; and the additional external lightdispersing features may have a gradually-increasing density in another direction from the another peripheral edge [1332] towards the longitudinal axis [1308],
  • the another one [1310] of the pair of panel surfaces may have a light-reflective layer [1402]; and the another one [1328] of the another pair of panel surfaces may have another light-reflective layer [1404], Further in those examples [1300] of the lighting system, the another one [1310] of the pair of panel surfaces may have a specular light-reflective layer [1402]; and the another one [1328] of the another pair of panel surfaces may have another specular light-reflective layer [1404], Additionally in those examples [1300] of the lighting system, the another one [1310] of the pair of panel surfaces may have a metallic light- reflective layer [1402]; and the another one [1328] of the another pair of panel surfaces may have another metallic light-reflective layer [1404], In some of those examples [1300] of the lighting system, the metallic light-reflective layers [1402], [1404] may have a composition that includes: silver, platinum
  • the another one [1310] of the pair of panel surfaces may have a light-reflective layer [1402]; and the another one [1328] of the another pair of panel surfaces may have another light-reflective layer [1404]; and each of the light-reflective layers [1402], [1404] may have a minimum visible-light reflection value from any incident angle being at least about ninety percent (90%) or being at least about ninety- five percent (95%).
  • the plurality of the semiconductor lightemitting devices [1320], [1322] may include an array of the semiconductor light-emitting devices [1320], [1322] being mutually spaced apart along the longitudinal axis [1308]; and the another plurality of the semiconductor light-emitting devices [1338], [1340] may include another array of the semiconductor light-emitting devices [1338], [1340] being mutually spaced apart along the longitudinal axis [1308], Additionally in those examples [1300] of the lighting system, the further plurality of the semiconductor light-emitting devices [1356], [1358] may include a further array of the semiconductor light-emitting devices [1356], [1358] being mutually spaced apart along the longitudinal axis [1308], Further in those examples [1300] of the lighting system, the additional plurality of the semiconductor light-emitting devices [1357], [1359] may include an additional array of the semiconductor light-emitting devices [131356], [1358] being mutually spaced apart along the
  • the plurality of the semiconductor lightemitting devices [1320], [1322] may be collectively configured for generating the visible-light emissions [1324], [1326] as having a selectable perceived color point; and the another plurality of the semiconductor light-emitting devices [1338], [1340] may be collectively configured for generating the additional visible-light emissions [1342], [1344] as having another selectable perceived color point.
  • the further plurality of the semiconductor light-emitting devices [1356], [1358] may be collectively configured for generating the further visible-light emissions [1360], [1362] as having a further selectable perceived color point.
  • the additional plurality of the semiconductor light-emitting devices [1357], [1359] may be collectively configured for generating the other visible-light emissions [1361], [1363] as having another selectable perceived color point.
  • the plurality of the semiconductor light-emitting devices [1320], [1322] may include a plurality of clusters of the semiconductor lightemitting devices [1320], [1322] being co-located together, each one of the plurality of clusters being collectively configured for generating the visible-light emissions [1324], [1326] as having a selectable perceived color point; and the another plurality of the semiconductor light-emitting devices [1338], [1340] may include another plurality of clusters of the semiconductor lightemitting devices [1338], [1340] being co-located together, each one of the another plurality of clusters being collectively configured for generating the additional visible-light emissions [1342], [1344] as having another selectable perceived color point.
  • the further plurality of the semiconductor light-emitting devices [1356], [1358] may include a further plurality of clusters of the semiconductor light-emitting devices [1356], [1358] being co-located together, each one of the further plurality of clusters being collectively configured for generating the further visible-light emissions [1360], [1362] as having a further selectable perceived color point.
  • the additional plurality of the semiconductor light-emitting devices [1357], [1359] may include an additional plurality of clusters of the semiconductor light-emitting devices [1357], [1359] being co-located together, each one of the additional plurality of clusters being collectively configured for generating the other visible-light emissions [1361], [1363] as having another selectable perceived color point.
  • each of the pluralities of clusters of the semiconductor light-emitting devices [1320], [1322], [1338], [1340], [1356], [1358], [1357], [1359] may include two or three or more co-located semiconductor light-emitting devices being configured for collectively generating the visible-light emissions [1324], [1326] and the additional visible-light emissions [1342], [1344] and the further visible-light emissions [1360], [1362] and the other visible-light emissions [1361], [1363] as having the respective selectable perceived color points.
  • a plurality of semiconductor light-emitting devices [1320], [1322], or a plurality of semiconductor light-emitting devices [1338], [1340], or a plurality of semiconductor light-emitting devices [1356], [1358], or a plurality of semiconductor light-emitting devices [1357], [1359] may be arranged in a chip-on-board (not shown) array, or in a discrete (not shown) array on a printed circuit board (not shown).
  • Semiconductor light-emitting device arrays including chip-on-board arrays and discrete arrays may be conventionally fabricated by persons of ordinary skill in the art.
  • the semiconductor light-emitting devices [1320], [1322], [1338], [1340], [1356], [1358], [1357], [1359] of the example [1300] of the lighting system may be provided with drivers (not shown) and power supplies (not shown) being conventionally fabricated and configured by persons of ordinary skill in the art.
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [1360], [1362] (and likewise the other visible-light emissions [1361], [1363]) as being within a field angle of the bowl reflector [1306] (or likewise of the bowl reflector [1307]) and for causing emission of another portion of the further visible-light emissions [1360], [1362] as being outside the field angle of the bowl reflector [1306]; and the emission aperture [1364] may be configured for redirecting some of the another portion of the further visible-light emissions [1360], [1362],
  • the bowl reflector [1306] may, as examples, have a beam angle being within a range of between about thirty degrees (30°) and about ten degrees (10°). Additionally in those examples [1300] of the lighting system, the bowl reflector [1306] may, as examples have a field angle being within a range of between about sixty degrees (
  • the emission aperture [1364] may be positioned for redirecting a part of the another portion of the further visible-light emissions [1360], [1362] (or likewise of the other visible-light emissions [1361], [1363]) being emitted at the third light output interface [1348] in directions deviating from the central light-emission axis [1346] by greater than about seventy degrees (70°).
  • the emission aperture [1364] may be positioned for redirecting a part of the another portion of the further visible-light emissions [1360], [1362] being emitted at the third light output interface [1348] in directions deviating from the central light-emission axis [1346] by greater than about sixty degrees (60°).
  • the lateral edges [1378], [1380], [1382], [1384] of the edge-lit lightguide panels [1302], [1304] may be linear; and the one [1312] of the pair of panel surfaces may be generally flat; and the one [1330] of the another pair of panel surfaces may be generally flat.
  • the flat panel surfaces [1312], [1330] of the emission aperture [1364] may be cooperatively positioned for mechanically shielding and thus redirecting some of the further visible-light emissions [1360], [1362] being emitted at the third light output interface [1348] in directions deviating from the central light-emission axis [1346] by greater than about sixty degrees (60°). Additionally in that example [1300] of the lighting system, redirection of the visible-light emissions [1360], [1362] being emitted at the third light output interface [1348] in high-angle directions being greater than about sixty degrees (60°) or seventy degrees (70°) may substantially reduce objectionable glare.
  • the bowl reflector [1306] (or likewise the additional bowl reflector [1307]) may have a beam angle being within a range of between about thirty degrees (30°) and about twenty degrees (20°). Further in those examples [1300] of the lighting system, the bowl reflector [1306] may have a field angle being within a range of between about sixty degrees (60°) and about forty degrees (40°).
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [1360], [1362] as being within the field angle of the bowl reflector [1306] and for causing emission of another portion of the further visible-light emissions [1360], [1362] as being outside the field angle of the bowl reflector [1306]; and the emission aperture [1364] may be configured for redirecting some of the another portion of the further visible-light emissions [1360], [1362], Further in those examples [1300], the emission aperture [1364] may be positioned for redirecting a part of the another portion of the further visible-light emissions [1360], [1362] being emitted at the third light output interface [1348] in directions deviating from the central lightemission axis [1346] by greater than about sixty degrees (60°), or deviating from the central lightemission axis by greater than about seventy degrees (70°).
  • the bowl reflector [1306] (or likewise the additional bowl reflector [1307]) may have a beam angle being within a range of between about twenty degrees (20°) and about ten degrees (10°); or within a range of between about fifteen degrees (15°) and about ten degrees (10°). Further in those examples [1300] of the lighting system, the bowl reflector [1306] may have a field angle being respectively within a range of between about forty degrees (40°) and about twenty degrees (20°), or within a range of between about thirty degrees (30°) and about twenty degrees (20°).
  • the third light output interface [1348] may include internal or external light-dispersing features; and the third light output interface [1348] may cause the bowl reflector [1306] to have an effective field angle being within a range of between about sixty degrees (60°) and about forty degrees (40°).
  • the lighting system may be configured for causing emission of a portion of the further visible-light emissions [1360], [1362] as being within the effective field angle of the bowl reflector [1306] and for causing emission of another portion of the further visible-light emissions [1360], [1362] as being outside the effective field angle of the bowl reflector [1306]; and the emission aperture [1364] may be configured for redirecting some of the another portion of the further visible-light emissions [1360], [1362], Further in those examples [1300], the emission aperture [1364] may be positioned for redirecting a part of the another portion of the further visible-light emissions [1360], [1362] being emitted at the third light output interface [1348] in directions deviating from the central light-emission axis [1346] by greater than about sixty degrees (60°), or deviating from the central light-emission axis by greater than about seventy degrees (70°).
  • the lighting system may include a controller (not shown) for the visible-light source [1318] and for the another visible-light source [1336] and for the further visible-light source [1354] and for the additional visible-light source [1355], the controller being configured for causing the visible-light emissions [1324], [1326] to have a selectable perceived color point and for causing the additional visible-light emissions [1342], [1344] to have another selectable perceived color point and for causing the further visible-light emissions [1360], [1362] to have a further selectable perceived color point and for causing the other visible-light emissions [1361], [1363] to have an additional selectable perceived color point.
  • the controller may be configured for causing the visible-light emissions [1324], [1326] to have a selectable and adjustable intensity and for causing the additional visible-light emissions [1342], [1344] to have another selectable and adjustable intensity and for causing the further visible-light emissions [1360], [1362] to have a further selectable and adjustable intensity and for causing the other visible-light emissions [1361], [1363] to have an additional selectable and adjustable intensity.
  • the controller may be configured for causing the combined visible-light emissions [1366], [1368] to generate a down-lighting pattern being: wall graze, table with wall fill, wall wash left, wall wash right, double wall wash, wall wash left plus floor, wall wash right plus floor, room, or batwing.
  • the controller may be configured for selection among a plurality of different pre-programmed combinations of the intensities for the visible-light emissions [1324], [1326], the additional visible-light emissions [1342], [1344], the further visible- light emissions [1360], [1362] and the other visible-light emissions [1361], [1363], Further in those examples [1300] of the lighting system, the controller may be configured for adjusting, over a selectable time period, the intensities for the visible-light emissions [1324], [1326], the additional visible-light emissions [1342], [1344], the further visible-light emissions [1360], [1362] and the other visible-light emissions [1361], [1363] from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the lighting system may further include an ambient light sensor (not shown); and the controller may be configured, in response to the ambient light sensor, for adjusting the intensities for the visible-light emissions [1324], [1326], the additional visible-light emissions [1342], [1344], the further visible-light emissions [1360], [1362], and the other visible-light emissions [1361], [1363],
  • the lighting system may include a controller (not shown) for the visible-light source [1318] being configured for causing the visible-light emissions [1324], [1326] to have a selectable perceived color point; and may include another controller (not shown) for the another visible-light source [1336] being configured for causing the additional visible-light emissions [1342], [1344] to have another selectable perceived color point; and may include a further controller (not shown) for the further visible-light source [1354] being configured for causing the further visible-light emissions [1360], [1362] to have a further selectable perceived color point; and may include an additional controller (not shown) for the additional visible-light source [1355] being configured for causing the other visible-light emissions [1361], [1363] to have an additional selectable perceived color point.
  • the controller may be configured for causing the visible-light emissions [1324], [1326] to have a selectable and adjustable intensity; and the another controller may be configured for causing the additional visible-light emissions [1342], [1344] to have another selectable and adjustable intensity; and the further controller may be configured for causing the further visible-light emissions [1360], [1362] to have a further selectable and adjustable intensity; and the additional controller may be configured for causing the other visible-light emissions [1361], [1363] to have an additional selectable and adjustable intensity.
  • the controller and the another controller and the further controller and the additional controller may be collectively configured for causing the combined visible-light emissions [1366], [1368] to generate a down-lighting pattern being: wall graze, table with wall fill, wall wash left, wall wash right, double wall wash, wall wash left plus floor, wall wash right plus floor, room, or batwing.
  • the controller and the another controller and the further controller and the additional controller may be collectively configured for selection among a plurality of different pre-programmed combinations of the intensities for the visible-light emissions [1324], [1326], the additional visible-light emissions [1342], [1344], the further visible-light emissions [1360], [1362]; and the other visible-light emissions [1361], [1363],
  • the controller and the another controller and the further controller and the additional controller may be collectively configured for adjusting, over a selectable time period, the intensities for the visible-light emissions [1324], [1326], the additional visible-light emissions [1342], [1344], the further visible-light emissions [1360], [1362], and the other visible-light emissions [1361], [1363], from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the lighting system may also include an ambient light sensor; and the controller and the another controller and the further controller and the additional controller may be collectively configured, in response to the ambient light sensor, for adjusting the intensities for the visible-light emissions [1324], [1326], the additional visible-light emissions [1342], [1344], and the further visible-light emissions [1360], [1362], and the other visible-light emissions [1361], [1363], [00264]
  • the lighting system may further include an auxiliary edge-lit lightguide panel [1303] and another auxiliary edge-lit lightguide panel [1305],
  • the auxiliary edge-lit lightguide panel [1303] may be extended along the longitudinal axis [1308], Further in those other examples [1300] of the lighting system, the auxiliary edge-lit lightguide panel [1303] may have an auxiliary pair of mutually- opposing panel surfaces [1309], [1311]; and the auxiliary edge-lit lightguide panel [
  • the another auxiliary edge-lit lightguide panel [1305] may be extended along the longitudinal axis [1308], Further in those other examples [1300] of the lighting system, the another auxiliary edge-lit lightguide panel [1305] may have another auxiliary pair of mutually-opposing panel surfaces [1327], [1329]; and the another auxiliary edge-lit lightguide panel [1305] may have another auxiliary peripheral edge [1331] being extended along and spaced transversely away from the longitudinal axis [1308], Also in those other examples [1300] of the lighting system, a one [1327] of the another auxiliary pair of panel surfaces may form another auxiliary light output interface [1333], Additionally in those other examples [1300], the lighting system may have another auxiliary visible-light source [1335] including another auxiliary plurality of semiconductor light-emitting devices [1337], [1339], In those other examples [1300] of the lighting system, the another auxiliary visible-light source [1335] including another auxiliary plurality of semiconductor light-emitting devices [
  • the first, second and third light output interfaces [1316], [1334], [1348] may cooperatively define the emission aperture [1364] for forming the combined visible-light emissions [1360], [1362] as being down-light emissions; and the auxiliary light output interface [1315] and the another auxiliary light output interface [1333] may cooperatively define another emission aperture [1345] for forming combined visible up-light emissions [1347], [1349] including the auxiliary visible-light emissions [1323], [1325] and the additional auxiliary visible-light emissions [1341], [1343], [00267]
  • Fig. 17 is a schematic diagram of an example [1700] of a lighting controller.
  • FIG. 18 is a schematic bottom perspective view showing an example [1800] of an implementation of a lighting system together with which the example [1700] of the lighting controller may be utilized.
  • Fig. 19 is a schematic cross-sectional view taken along the line 19-19 showing the example [1800] of the lighting system together with which the example [1700] of the lighting controller may be utilized.
  • Fig. 20 is a schematic cross-sectional view taken along the line 20-20 showing the example [1800] of the lighting system together with which the example [1700] of the lighting controller may be utilized.
  • Fig. 21 is a schematic top perspective view taken along the line 21 showing the example [1800] of an implementation of a lighting system together with which the example [1700] of the lighting controller may be utilized.
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers are discussed herein, respectively, in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9- 12.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • Examples [100], [500], [900], [1300], [1800], [2300], [2800], [3700], and [4000] of lighting systems that may for example be utilized together with the example [1700] of the lighting controller are discussed herein, respectively, in connection with Figs.: 1-4; 5-8; 9-12; 13-16; 18-21; 22-26; 27-31; 37-39; and 40- 42.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [1700] of the implementation of the lighting controller includes a control system [1702] including a first control facility [1704] and a second control facility [1706],
  • the first control facility [1704] is for controlling a first visible-light source [1802] including a first plurality of semiconductor light-emitting devices [1804], [1806], [1808] being spaced apart from and along a longitudinal axis [1810], the first visible-light source [1802] being positioned for directing a first beam [1812] of first visible-light emissions being represented by arrows [1814], [1815] from the first plurality of semiconductor light-emitting devices [1804], [1806], [1808] in a first beam direction also represented by the arrows [1814], [1815],
  • the second control facility [1706] is for controlling a second visible-light source [1816]
  • the control system [1702] may be programmed for causing the first and second beams [1812], [1824] to collectively emulate the progression [1832] of ambient sunlight by initially modulating the first intensity [1828] of the first beam [1812] to relatively be substantially greater than the second intensity [1830] of the second beam [1824], and by then gradually modulating the second intensity [1830] of the second beam [1824] to relatively become substantially greater than the first intensity [1828] of the first beam [1812],
  • the control system [1702] may be programmed for facilitating an alignment being represented by arrows [1902], [1904] of the first beam [1812] towards a first boundary represented by a dashed line [Bl] of an ambient space represented by a dashed box [S] and for facilitating another alignment being represented by arrows [1906], [1908] of the second beam [1824] towards a second boundary represented by
  • the control system [1702] may regulate a distribution of a variable power input to: the first plurality of semiconductor lightemitting devices [1804], [1806], [1808] of the first visible-light source [1802] for controlling the intensity [1828] of the first visible-light emissions [1814], [1815]; and the second plurality of semiconductor light-emitting devices [1818], [1820], [1822] of the second visible-light source [1816] for controlling the intensity [1830] of the second visible-light emissions [1826], [1827], [00272]
  • the control system [1702] may be programmed for modulating the first intensity [1828] of the first beam [1812] and the second intensity [1830] of the second beam [1824] in a manner for causing the first and second beams [1812], [1824] of the first and second visible-light emissions [1814], [1815], [1826
  • the control system [1702] may be programmed for modulating the first intensity [1828] of the first beam [1812] and the second intensity [1830] of the second beam [1824] in a manner for causing the first and second beams [1812], [1824] of the first and second visible- light emissions [1814], [1815], [1826], [1827] to collectively emulate the progression of ambient sunlight [1832] throughout the cycle extending from sunrise being represented by the line [1834] to sunset being represented by the line [1836],
  • the control system [1702] may be programmed for modulating the first intensity [1828] of the first beam [1812] and the second intensity [1830] of the second beam [1824] in a manner for causing the first and second beams [1812], [1824] of the first and second visible-light emissions [1814], [1815], [1826], [1827] to collectively initiate an emulation of the
  • control system [1702] may be programmed for modulating the first intensity [1828] of the first beam [1812] and the second intensity [1830] of the second beam [1824] with a maximum ratio, of the first intensity [1828] divided by the second intensity [1830], or of the second intensity [1830] divided by the first intensity [1828], being at least about 100: 1.
  • the control system [1702] may be programmed for modulating the first intensity [1828] of the first beam [1812] in a first range, and for modulating the second intensity [1830] of the second beam [1824] in a second range, in a manner for causing the first and second beams [1812], [1824] of the first and second visible-light emissions [1814], [1815], [1826], [1827] to collectively emulate the progression of ambient sunlight [1832],
  • the control system [1702] may be programmed for controlling the first beam [1812] of the first visible-light emissions [1814], [1815] as having a first baseline intensity being represented by an arrow [1838] and for controlling the second beam [1824] of the second visible-light emissions [1826], [1827] as having a second baseline intensity being represented by an arrow [1840]; and the control system [1702] may be programmed for modulating the first intensity [1828] of the first beam [1812] in a first range, and for
  • the control system [1702] may regulate a distribution of a variable baseline power input to: the first plurality of semiconductor light-emitting devices [1804], [1806], [1808] of the first visible-light source [1802] for controlling the baseline intensity [1838] of the first visible-light emissions [1814], [1815]; and the second plurality of semiconductor light-emitting devices [1818], [1820], [1822] ofthe second visible-light source [1816] for controlling the baseline intensity [1840] of the second visible-light emissions [1826], [1827], Further in those examples [1700] of the lighting controller, the control system [1702] may regulate a distribution of a variable additive power input to: the first plurality of semiconductor light-emitting devices [1804], [1806], [1808] of the first visible-light source [1802] for controlling the additive intensity [1842] of the first visible-light emissions [1814], [1815]; and the second plurality
  • the control system [1702] may include the first control facility [1704] being coupled as represented by a dashed line [1714] with the first visible-light source [1802] for controlling the first intensity [1828] of the first beam [1812] of the first visible-light emissions [1814], [1815]; and the control system [1702] may further include the second control facility [1706] being coupled as represented by a dashed line [1716] with the second visible-light source [1816] for controlling the second intensity [1830] of the second beam [1824] of the second visible-light emissions [1826], [1827], [00276]
  • the control system [1702] may include the first control facility [1704] as being for controlling the first visible-light source [1802] with the first plurality of semiconductor light-emitting devices [1804], [1806], [1808] being collectively configured for generating the first visible-light emissions [18
  • the control system [1702] may include the first control facility [1704] as being for controlling the first visible-light source [1802] with the first plurality of semiconductor light-emitting devices [1804], [1806], [1808] being collectively configured for generating the first visible-light emissions [1814], [1815] as having a selectable first perceived color point [1812], wherein a plurality of individual ones among the first plurality of semiconductor light-emitting devices [1804], [1806], [1808] may each emit visible- light having a different color point.
  • control system [1702] may include the second control facility [1706] as being for controlling the second visible-light source [1816] with the second plurality of semiconductor lightemitting devices [1818], [1820], [1822] being collectively configured for generating the second visible-light emissions [1826], [1827] as having a selectable second perceived color point [1824], wherein a plurality of individual ones among the second plurality of semiconductor light-emitting devices [1818], [1820], [1822] may each emit visible-light having a different color point.
  • Figs. 17-21 also illustrate an example [1800] of an implementation of a lighting system.
  • the lighting system [1800] may include: the first visible-light source [1802]; and the second visible-light source [1816]; and the example [1700] of the lighting controller.
  • the lighting controller [1700] may include the control system [1702], Further in the example [1800] of the lighting system, the control system [1702] may include the first control facility [1704] and the second control facility [1706], Additionally in the example [1800] of the lighting system, the first control facility [1704] may be coupled as represented by a dashed line [1714] with the first visible-light source [1802] for controlling the first intensity [1828] of the first beam [1812] of the first visible-light emissions [1814], [1815], Further in the example [1800] of the lighting system, the second control facility [1706] may be coupled as represented by a dashed line [1716] with the second visible-light source [1816] for controlling the second intensity [1830] of the second beam [1824] of the second visible-light emissions [1826], [1827], In the example [1800] of the lighting system, the first control facility [1704] may be for controlling the first visible-light
  • the second visible-light source [1816] may include the second plurality of semiconductor light-emitting devices [1818], [1820], [1822] as being arranged in a second string also shown in Fig. 18; and the first and second strings may generally be mutually parallel. In other examples [1800] of the lighting system (not shown), the first and second strings may generally oriented as not being mutually parallel.
  • the first control facility [1704] may be programmed for controlling a first intensity being represented by an arrow [1828] of the first beam [1812] of the first visible-light emissions [1814], [1815], and the second control facility [1706] may be programmed for controlling a second intensity being represented by an arrow [1830] of the second beam [1824] of the second visible light emissions [1826], [1827],
  • the control system [1702] may be programmed for modulating the first intensity [1828] of the first beam [1812] and the second intensity [1830] of the second beam [1824] in a manner for causing the first and second beams [1812], [1824] of the first and second visible- light emissions [1814], [1815], [1826], [1827] to collectively emulate a progression of ambient sunlight being represented by an arrow [1832],
  • Fig. 22 is a schematic diagram of an example [2200] of a lighting controller.
  • Fig. 23 is a schematic bottom perspective view showing an example [2300] of an implementation of a lighting system together with which the example [2200] of the lighting controller may be utilized.
  • Fig. 24 is a schematic cross-sectional view taken along the line 24-24 showing the example [2300] of the lighting system together with which the example [2200] of the lighting controller may be utilized.
  • Fig. 25 is a schematic cross-sectional view taken along the line 25-25 showing the example [2300] of the lighting system together with which the example [2200] of the lighting controller may be utilized.
  • Fig. 26 is a schematic top perspective view taken along the line 26 showing the example [2300] of an implementation of a lighting system together with which the example [2200] of the lighting controller may be utilized.
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers are discussed herein, respectively, in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9- 12.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [2200] of the implementation of the lighting controller includes a control system [2202] including a first control facility [2204] and a second control facility [2206] and a third control facility [2207],
  • the first control facility [2204] is for controlling a first visible-light source [2302] including a first plurality of semiconductor light-emitting devices [2304], [2306], [2308] being spaced apart from and along a longitudinal axis [2310], the first visible-light source [2302] being positioned for directing a first beam [2312] of first visible-light emissions being represented by arrows [2314], [2315] from the first plurality of semiconductor light-emitting devices [2304], [2306], [2308] in a first beam direction also represented by the arrows [2314], [2315],
  • the second control facility [2206] is for controlling a first visible-light source [2302] including a first plurality of semiconductor light-emitting devices [2304], [2306
  • the control system [2202] may be programmed for causing the first and second and third beams [2312], [2324], [2325] to collectively emulate the progression [2332] of ambient sunlight by initially modulating the first intensity [2328] of the first beam [2312] to relatively be substantially greater than the third intensity [2333] of the third beam [2325] while modulating the third intensity [2333] of the third beam [2325] to relatively be substantially greater than the second intensity [2330] of the second beam [2324], and by then gradually modulating the second intensity [2330] of the second beam [2324] to relatively become substantially greater than the third intensity [2333] of the third beam [2325] while gradually modulating the third intensity [2333] of the third beam [2325] to relatively become substantially greater than the first intensity [2328] of the first beam [2312],
  • the control system [2202] may be programmed for causing two of the beam
  • the control system [2202] may regulate a distribution of a variable power input to: the first plurality of semiconductor lightemitting devices [2304], [2306], [2308] of the first visible-light source [2302] for controlling the intensity [2328] of the first visible-light emissions [2314], [2315]; and the second plurality of semiconductor light-emitting devices [2318], [2320], [2322] of the second visible-light source [2316] for controlling the intensity [2330] of the second visible-light emissions [2326], [2327]; and the third plurality of semiconductor light-emitting devices [2319], [2321], [2323] of the third visible-light source [2317] for controlling the intensity [2333] of the third visible-light emissions [2329], [2331],
  • control system [2202] may include one or more control facilities (not shown) in addition to the first control facility [2204] and the second control facility [2206] and the third control facility [2207]; and one or more visible-light sources in addition to the first visible-light source [2302] and the second visible-light source [2316] and the third visible-light source [2317] may be provided.
  • the control system [2202] may be programmed for facilitating an alignment being represented by arrows [2402], [2404] of the first beam [2312] towards a first boundary represented by a dashed line [Bl] of an ambient space represented by a dashed box [S] and for facilitating another alignment being represented by arrows [2406], [2408] of the second beam [2324] towards a second boundary represented by a dashed line [B2] of the ambient space [S] being opposite to the first boundary [Bl],
  • the control system [2202] may be programmed for facilitating the alignment [2402], [2404] of the first beam [2312] as being towards the first boundary [Bl] of the ambient space [S] and for facilitating the alignment [2406], [2408] of the second beam [2324] as being towards the second boundary [B2] of the ambient space [S], with each of the
  • the control system [2202] may be programmed for modulating the first intensity [2328] of the first beam [2312] and the second intensity [2330] of the second beam [2324] and the third intensity [2333] of the third beam [2325] in a manner for causing the first and second and third beams [2312], [2324], [2325] of the first and second and third visible-light emissions [2314], [2315], [2326], [2327], [2329], [2331] to collectively emulate the progression of ambient sunlight [2332] through a portion of a cycle extending from sunrise being represented by a line [2334] to sunset being represented by a line [2336]; or through a period beginning before sunrise; or through a period ending after sunset; or through a period both beginning before sunrise and ending after sunset.
  • the control system [2202] may be programmed for modulating the first intensity [2328] of the first beam [2312] and the second intensity [2330] of the second beam [2324] and the third intensity [2333] of the third beam [2325] in a manner for causing the first and second and third beams [2312], [2324], [2325] of the first and second and third visible-light emissions [2314], [2315], [2326], [2327], [2329], [2331] to collectively emulate the progression of ambient sunlight [2332] throughout the cycle extending from sunrise being represented by the line [2334] to sunset being represented by the line [2336],
  • the control system [2202] may be programmed for modulating the first intensity [2328] of the first beam [2312] and the second intensity [2330] of the second beam [2324] and the third intensity [2333] of the third beam [2325] in a manner for causing
  • control system [2202] may be programmed for modulating the first intensity [2328] of the first beam [2312] and the second intensity [2330] of the second beam [2324] with a maximum ratio of the first intensity [2328] divided by the second intensity [2330] or of the second intensity [2330] divided by the first intensity [2328] being at least about 100:1. Also in these examples [2200] of the lighting controller, the control system [2202] may be programmed for modulating the third intensity [2333] of the third beam [2325] as being in between the first intensity [2328] and the second intensity [2330],
  • the control system [2202] may be programmed for modulating the first intensity [2328] of the first beam [2312] in a first range, and for modulating the second intensity [2330] of the second beam [2324] in a second range, and for modulating the third intensity [2333] of the third beam [2325] in a third range, in a manner for causing the first and second and third beams [2312], [2324], [2325] of the first and second and third visible-light emissions [2314], [2315], [2326], [2327], [2329], [2331] to collectively emulate the progression of ambient sunlight [2332],
  • the control system [2202] may be programmed for controlling the first beam [2312] of the first visible-light emissions [2314], [2315] as having a first baseline intensity being represented by an arrow [2338] and for controlling the second beam [2324] of the second visible
  • the control system [2202] may cause the first beam [2312] and the second beam [2324] and the third beam [2325] to respectively have the following baseline intensities [2338] / [2340] / [2341] collectively constituting one hundred percent of a variable baseline power input of the control system [2202] in order to form the following pre-set baseline patterns of the first and second and third visible-light emissions [2314], [2315], [2326], [2327], [2329], [2331]: center wall graze [0/100/0]; table with wall-fill [17/66/17]; wall wash right [0/0/100]; wall wash left [100/0/0]; double wall wash [50/0/50]; wall wash right plus floor [0/33/67]; wall wash left plus floor [67/33/0]; low-glare room lighter [33/34/33]; or low glare quasi-batwing [40/20/40],
  • the control system [2202] may regulate a distribution of a variable baseline power input to: the first plurality of semiconductor light-emitting devices [2304], [2306], [2308] of the first visible-light source [2302] for controlling the baseline intensity [2338] of the first visible-light emissions [2314], [2315]; and the second plurality of semiconductor light-emitting devices [2318], [2320], [2322] of the second visible-light source [2316] for controlling the baseline intensity [2340] of the second visible-light emissions [2326], [2327]; and the third plurality of semiconductor light-emitting devices [2319], [2321], [2323] of the third visible-light source [2317] for controlling the baseline intensity [2341] of the third visible-light emissions [2329], [2331], Further in those examples [2200] of the lighting controller, the control system [2202] may regulate a distribution of a variable additive power input to: the first plurality of semiconductor light-emitting devices [2304], [23
  • control system [2202] may be programmed for transitioning, over a selectable time period, the baseline intensities [2338], [2340], [2341] for the first visible-light emissions [2314], [2315], the second visible-light emissions [2326], [2327], and the third visible-light emissions [2329], [2331] from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the control system [2202] may include the first control facility [2204] being coupled as represented by a dashed line [2214] with the first visible-light source [2302] for controlling the first intensity [2328] of the first beam [2312] of the first visible-light emissions [2314], [2315]; and the control system [2202] may further include the second control facility [2206] being coupled as represented by a dashed line [2216] with the second visible-light source [2316] for controlling the second intensity [2330] of the second beam [2324] of the second visible-light emissions [2326], [2327]; and the control system [2202] may further include the third control facility [2207] being coupled as represented by a dashed line [2218] with the third visible-light source [2317] for controlling the third intensity [2333] of the third beam [2325] of the third visible-light emissions [2329], [2331],
  • the control system [2202] may include the first control facility [2204] as being for controlling the first visible-light source [2302] with the first plurality of semiconductor light-emitting devices [2304], [2306], [2308] being collectively configured for generating the first visible-light emissions [2314], [2315] as having a selectable first perceived color point [2312]; and the control system [2202] may include the second control facility [2206] as being for controlling the second visible-light source [2316] with the second plurality of semiconductor light-emitting devices [2318], [2320], [2322] being collectively configured for generating the second visible-light emissions [2326], [2327] as having a selectable second perceived color point [2324]; and the control system [2202] may include the third control facility [2207] as being for controlling the third visible-light source [2317] with the third plurality of semiconductor light-emitting devices [2319], [2321],
  • the control system [2202] may include the first control facility [2204] as being for controlling the first visible-light source [2302] with the first plurality of semiconductor light-emitting devices [2304], [2306], [2308] being collectively configured for generating the first visible-light emissions [2314], [2315] as having a selectable first perceived color point [2312], wherein a plurality of individual ones among the first plurality of semiconductor light-emitting devices [2304], [2306], [2308] may each emit visible- light having a different color point.
  • control system [2202] may include the second control facility [2206] as being for controlling the second visible-light source [2316] with the second plurality of semiconductor lightemitting devices [2318], [2320], [2322] being collectively configured for generating the second visible-light emissions [2326], [2327] as having a selectable second perceived color point [2324], wherein a plurality of individual ones among the second plurality of semiconductor light-emitting devices [2318], [2320], [2322] may each emit visible-light having a different color point.
  • control system [2202] may include the third control facility [2207] as being for controlling the third visible-light source [2317] with the third plurality of semiconductor light-emitting devices [2319], [2321], [2323] being collectively configured for generating the third visible-light emissions [2329], [2331] as having a selectable third perceived color point [2325], wherein a plurality of individual ones among the third plurality of semiconductor light-emitting devices [2319], [2321], [2323] may each emit visible-light having a different color point.
  • Figs. 22-26 further illustrate an example [2300] of an implementation of a lighting system.
  • the lighting system [2300] may include: the first visible-light source [2302]; and the second visible-light source [2316]; and the third visible-light source [2317]; and the example [2200] of the lighting controller.
  • the lighting controller [2200] may include the control system [2202], Further in the example [2300] of the lighting system, the control system [2202] may include the first control facility [2204] and the second control facility [2206] and the third control facility [2207], Additionally in the example [2300] of the lighting system, the first control facility [2204] may be coupled as represented by a dashed line [2214] with the first visible-light source [2302] for controlling the first intensity [2328] of the first beam [2312] of the first visible-light emissions [2314], [2315], Further in the example [2300] of the lighting system, the second control facility [2206] may be coupled as represented by a dashed line [2216] with the second visible-light source [2316] for controlling the second intensity [2330] of the second beam [2324] of the second visible-light emissions [2326], [2327], Additionally in the example [2300] of the lighting system, the third control facility [22
  • the second visible-light source [2316] may include the second plurality of semiconductor lightemitting devices [2318], [2320], [2322] as being arranged in a second string also shown in Fig. 23; and the third visible-light source [2317] may include the third plurality of semiconductor lightemitting devices [2319], [2321], [2323] as being arranged in a third string also shown in Fig. 23; and the first and second and third strings may generally be mutually parallel.
  • the first and second and third strings may generally oriented as not being mutually parallel.
  • the first control facility [2204] may be programmed for controlling a first intensity being represented by an arrow [2328] of the first beam [2312] of the first visible-light emissions [2314], [2315], and the second control facility [2206] may be programmed for controlling a second intensity being represented by an arrow [2330] of the second beam [2324] of the second visible light emissions [2326], [2327] and the third control facility [2207] may be programmed for controlling a third intensity being represented by an arrow [2333] of the third beam [2325] of the third visible light emissions [2329], [2331],
  • the control system [2202] may be programmed for modulating the first intensity [2328] of the first beam [2312] and the second intensity [2330] of the second beam [2324] and the third intensity [2333] of the third beam [2325] in a manner for causing the first and second and
  • FIG. 27 is a schematic diagram of an example [2700] of a lighting controller.
  • Fig. 28 is a schematic bottom perspective view showing an example [2800] of an implementation of a lighting system together with which the example [2700] of the lighting controller may be utilized.
  • Fig. 29 is a schematic cross-sectional view taken along the line 29-29 showing the example [2800] of the lighting system together with which the example [2700] of the lighting controller may be utilized.
  • Fig. 30 is a schematic cross-sectional view taken along the line 30-30 showing the example [2800] of the lighting system together with which the example [2700] of the lighting controller may be utilized.
  • Fig. 31 is a schematic top perspective view taken along the line 31 showing the example [2800] of an implementation of a lighting system together with which the example [2700] of the lighting controller may be utilized.
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers are discussed herein, respectively, in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9- 12.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [2700] of the implementation of the lighting controller includes a control system [2702] including a first control facility [2704] and a second control facility [2706] and a third control facility [2707],
  • the first control facility [2704] is for controlling a first visible-light source [2802] including a first plurality of semiconductor light-emitting devices [2804], [2806], [2808] being spaced apart from and along a longitudinal axis [2810], the first visible-light source [2802] being positioned for directing a first beam [2812] of first visible-light emissions being represented by arrows [2814], [2815] from the first plurality of semiconductor light-emitting devices [2804], [2806], [2808] in a first beam direction also represented by the arrows [2814], [2815],
  • the second control facility [2706] is for controlling a first visible-light source [2802] including a first plurality of semiconductor light-emitting devices [2804], [2806
  • the control system [2702] may be programmed for causing the first and second and third beams [2812], [2824], [2825] to collectively emulate the progression [2832] of ambient sunlight by initially modulating the first intensity [2828] of the first beam [2812] to relatively be substantially greater than the third intensity [2833] of the third beam [2825] while modulating the third intensity [2833] of the third beam [2825] to relatively be substantially greater than the second intensity [2830] of the second beam [2824], and by then gradually modulating the second intensity [2830] of the second beam [2824] to relatively become substantially greater than the third intensity [2833] of the third beam [2825] while gradually modulating the third intensity [2833] of the third beam [2825] to relatively become substantially greater than the first intensity [2828] of the first beam [2812],
  • the control system [2702] may be programmed for causing two of the beams
  • the control system [2702] may regulate a distribution of a variable power input to: the first plurality of semiconductor lightemitting devices [2804], [2806], [2808] of the first visible-light source [2802] for controlling the intensity [2828] of the first visible-light emissions [2814], [2815]; and the second plurality of semiconductor light-emitting devices [2818], [2820], [2822] of the second visible-light source [2816] for controlling the intensity [2830] of the second visible-light emissions [2826], [2827]; and the third plurality of semiconductor light-emitting devices [2819], [2821], [2823] of the third visible-light source [2817] for controlling the intensity [2833] of the third visible-light emissions [2829], [2831],
  • control system [2702] may include one or more control facilities (not shown) in addition to the first control facility [2704] and the second control facility [2706] and the third control facility [2707]; and one or more visible-light sources in addition to the first visible-light source [2802] and the second visible-light source [2816] and the third visible-light source [2817] may be provided.
  • the control system [2702] may be programmed for facilitating an alignment being represented by arrows [2902], [2904] of the first beam [2812] towards a first boundary represented by a dashed line [Bl] of an ambient space represented by a dashed box [S] and for facilitating another alignment being represented by arrows [2906], [2908] of the second beam [2824] towards a second boundary represented by a dashed line [B2] of the ambient space [S] being opposite to the first boundary [Bl],
  • the control system [2702] may be programmed for facilitating the alignment [2902], [2904] of the first beam [2812] as being towards the first boundary [Bl] of the ambient space [S] and for facilitating the alignment [2906], [2908] of the second beam [2824] as being towards the second boundary [B2] of the ambient space [S], with each of the first boundary [Bl] of the ambient space [S]
  • the control system [2702] may be programmed for modulating the first intensity [2828] of the first beam [2812] and the second intensity [2830] of the second beam [2824] and the third intensity [2833] of the third beam [2825] in a manner for causing the first and second and third beams [2812], [2824], [2825] of the first and second and third visible-light emissions [2814], [2815], [2826], [2827], [2829], [2831] to collectively emulate the progression of ambient sunlight [2832] throughout the cycle extending from sunrise being represented by the line [2834] to sunset being represented by the line [2836],
  • the control system [2702] may be programmed for modulating the first intensity [2828] of the first beam [2812] and the second intensity [2830] of the second beam [2824] and the third intensity [2833] of the third beam [2825] in a manner for causing
  • the control system [2702] may cause the first beam [2812] and the second beam [2824] and the third beam [2825] to respectively have the following baseline intensities [2838] / [2840] / [2841] collectively constituting one hundred percent of a variable baseline power input of the control system [2702] in order to form the following pre-set baseline patterns of the first and second and third visible-light emissions [2814], [2815], [2826], [2827], [2829], [2831]: center wall graze [0/100/0]; table with wall-fill [17/66/17]; wall wash right [0/0/100]; wall wash left [100/0/0]; double wall wash [50/0/50]; wall wash right plus floor [0/33/67]; wall wash left plus floor [67/33/0]; low-glare room lighter [33/34/33]; or low glare quasi-batwing [40/20/40],
  • the control system [2702] may regulate a distribution of a variable baseline power input to: the first plurality of semiconductor light-emitting devices [2804], [2806], [2808] of the first visible-light source [2802] for controlling the baseline intensity [2838] of the first visible-light emissions [2814], [2815]; and the second plurality of semiconductor light-emitting devices [2818], [2820], [2822] of the second visible-light source [2816] for controlling the baseline intensity [2840] of the second visible-light emissions [2826], [2827]; and the third plurality of semiconductor light-emitting devices [2819], [2821], [2823] of the third visible-light source [2817] for controlling the baseline intensity [2841] of the third visible-light emissions [2829], [2831], Further in those examples [2700] of the lighting controller, the control system [2702] may regulate a distribution of a variable additive power input to: the first plurality of semiconductor light-emitting devices [2804], [28
  • control system [2702] may be programmed for transitioning, over a selectable time period, the baseline intensities [2838], [2840], [2841] for the first visible-light emissions [2814], [2815], the second visible-light emissions [2826], [2827], and the third visible-light emissions [2829], [2831] from a one of the plurality of pre-programmed combinations to another one of the plurality of pre-programmed combinations.
  • the first beam direction [2814], [2815] and the second beam direction [2826], [2827] and the third beam direction [2829], [2831] may be down-light beam directions as represented by the arrows [2828], [2830], [2833], Further in those examples [2700], the control system [2702] may further include a fourth control facility [2718] being coupled with a fourth visible-light source [2916] including a fourth plurality of semiconductor light-emitting devices [2918], [3106], [3002] being spaced apart from and along the longitudinal axis [2810], Further in those examples [2700] of the lighting controller, the fourth visible-light source [2916] may be positioned for directing a fourth beam [2920] of fourth visible- light emissions being represented by arrows [3114], [3115] from the fourth plurality of semiconductor light-emitting devices [2918], [3106], [3002] in a fourth beam direction also represented
  • control system [2702] may further include a fifth control facility [2720] being coupled with a fifth visible-light source [2922] including a fifth plurality of semiconductor lightemitting devices [2924], [3120], [3006] being spaced apart from and along the longitudinal axis [2810], Further in those examples [2700] of the lighting controller, the fifth visible-light source [2922] may be positioned for directing a fifth beam [2926] of fifth visible-light emissions being represented by arrows [3126], [3127] from the fifth plurality of semiconductor light-emitting devices [2924], [3120], [3006] in a fifth beam direction also represented by the arrows [3126], [3127], being an up-light beam direction.
  • control system [2702] may be programmed for causing the fourth and fifth beams [2920], [2926] to be collectively synchronized with the progression of ambient sunlight [2832] by initially modulating a fourth intensity [3128] of the fourth beam [2920] to relatively be substantially greater than a fifth intensity [3130] of the fifth beam [2926], and by then gradually modulating the fifth intensity [3130] of the fifth beam [2926] to relatively become substantially greater than the fourth intensity [3128] of the fourth beam [2920],
  • control system [2702] may additionally include a sixth control facility [2722] being coupled with a sixth visible-light source [2928] including a sixth plurality of semiconductor light-emitting devices [2930], [3121], [3004] being spaced apart from and along the longitudinal axis [2810], Further in those examples [2700] of the lighting controller, the sixth visible-light source [2928] may be positioned for directing a sixth beam [2932] of sixth visible-light emissions being represented by arrows [3129], [3131] from the sixth plurality of semiconductor light-emitting devices [2930], [3121], [3004] in a sixth beam direction also represented by the arrows [3129], [3131], being an up-light beam direction.
  • the control system [2702] may be programmed for causing the fourth and fifth and sixth beams [2920], [2926], [2932] to be collectively synchronized with the progression of ambient sunlight [2832] by initially modulating the fourth intensity [3128] of the fourth beam [2920] to relatively be substantially greater than a sixth intensity [3133] of the sixth beam [2932] while modulating the sixth intensity [3133] of the sixth beam [2932] to relatively be substantially greater than the fifth intensity [3130] of the fifth beam [2926]; and by then gradually modulating the fifth intensity [3130] of the fifth beam [2926] to relatively become substantially greater than the sixth intensity [3133] of the sixth beam [2932] while gradually modulating the sixth intensity [3133] of the sixth beam [2932] to relatively become substantially greater than the fourth intensity [3128] of the fourth beam [2920],
  • the control system [2702] may be programmed for causing two of the beams [29
  • Figs. 27-31 further illustrate an example [2800] of an implementation of a lighting system.
  • the lighting system [2800] may include: the first visible-light source [2802]; and the second visible-light source [2816]; and the third visible-light source [2817]; and the example [2700] of the lighting controller.
  • the lighting controller [2700] may include the control system [2702], Further in the example [2800] of the lighting system, the control system [2702] may include the first control facility [2704] and the second control facility [2706] and the third control facility [2707], Additionally in the example [2800] of the lighting system, the first control facility [2704] may be coupled as represented by a dashed line [2714] with the first visible-light source [2802] for controlling the first intensity [2828] of the first beam [2812] of the first visible-light emissions [2814], [2815], Further in the example [2800] of the lighting system, the second control facility [2706] may be coupled as represented by a dashed line [2716] with the second visible-light source [2816] for controlling the second intensity [2830] of the second beam [2824] of the second visible-light emissions [2826], [2827], Additionally in the example [2800] of the lighting system, the third control facility [27
  • the second visible-light source [2816] may include the second plurality of semiconductor lightemitting devices [2818], [2820], [2822] as being arranged in a second string also shown in Fig. 28; and the third visible-light source [2817] may include the third plurality of semiconductor lightemitting devices [2819], [2821], [2823] as being arranged in a third string also shown in Fig. 28; and the first and second and third strings may generally be mutually parallel.
  • the first and second and third strings may generally oriented as not being mutually parallel.
  • the first control facility [2704] may be programmed for controlling a first intensity being represented by an arrow [2828] of the first beam [2812] of the first visible-light emissions [2814], [2815], and the second control facility [2706] may be programmed for controlling a second intensity being represented by an arrow [2830] of the second beam [2824] of the second visible light emissions [2826], [2827] and the third control facility [2707] may be programmed for controlling a third intensity being represented by an arrow [2833] of the third beam [2825] of the third visible light emissions [2829], [2831],
  • the control system [2702] may be programmed for modulating the first intensity [2828] of the first beam [2812] and the second intensity [2830] of the second beam [2824] and the third intensity [2833] of the third beam [2825] in a manner for causing the first and second and
  • the control system [2702] may additionally include a fifth control facility [2720] being coupled as represented by a dashed line [2717] with a fifth visible-light source [2922] including a fifth plurality of semiconductor lightemitting devices [2924], [3120], [3006] being spaced apart from and along the longitudinal axis [2810], Further in those examples [2800] of the lighting system, the fifth visible-light source [2922] may be positioned for directing a fifth beam [2926] of fifth visible-light emissions being represented by arrows [3126], [3127] from the fifth plurality of semiconductor light-emitting devices [2924], [3120], [3006] in a fifth beam direction also represented by the arrows [3126], [3127], being an up-light beam direction.
  • control system [2702] may be programmed for causing the fourth and fifth beams [2920], [2926] to be collectively synchronized with the progression of ambient sunlight [2832] by initially modulating a fourth intensity [3128] of the fourth beam [2920] to relatively be substantially greater than a fifth intensity [3130] of the fifth beam [2926], and by then gradually modulating the fifth intensity [3130] of the fifth beam [2926] to relatively become substantially greater than the fourth intensity [3128] of the fourth beam [2920],
  • the control system [2702] may additionally include a sixth control facility [2722] being coupled as represented by a dashed line [2719] with a sixth visible-light source [2928] including a sixth plurality of semiconductor lightemitting devices [2930], [3121], [3004] being spaced apart from and along the longitudinal axis [2810], Further in those examples [2800] of the lighting system, the sixth visible-light source [2928] may be positioned for directing a sixth beam [2932] of sixth visible-light emissions being represented by arrows [3129], [3131] from the sixth plurality of semiconductor light-emitting devices [2930], [3121], [3004] in a sixth beam direction also represented by the arrows [3129], [3131], being an up-light beam direction.
  • control system [2702] may be programmed for causing the fourth and fifth and sixth beams [2920], [2926], [2932] to be collectively synchronized with the progression of ambient sunlight [2832] by initially modulating the fourth intensity [3128] of the fourth beam [2920] to relatively be substantially greater than a sixth intensity [3133] of the sixth beam [2932] while modulating the sixth intensity [3133] of the sixth beam [2932] to relatively be substantially greater than the fifth intensity [3130] of the fifth beam [2926]; and by then gradually modulating the fifth intensity [3130] of the fifth beam [2926] to relatively become substantially greater than the sixth intensity [3133] of the sixth beam [2932] while gradually modulating the sixth intensity [3133] of the sixth beam [2932] to relatively become substantially greater than the fourth intensity [3128] of the fourth beam [2920],
  • Fig. 32 is a schematic diagram of an example [3200] of a lighting controller, being utilized together with the lighting system [100] discussed earlier in connection with Figs. 1-4.
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers are discussed herein, respectively, in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9- 12.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [3200] of the implementation of the lighting controller includes a control system [3202] including a first control facility [3204] and a second control facility [3206] and a third control facility [3207],
  • the first control facility [3204] is for controlling a first visible-light source [118] including a first plurality of semiconductor light-emitting devices [120], [122] being spaced apart from and along a longitudinal axis [108], the first visible-light source [118] being positioned for directing a first beam of first visible-light emissions being represented by arrows [124], [126] from the first plurality of semiconductor light-emitting devices [120], [122] into an edge-lit lightguide panel [102] in a first beam direction being represented by the arrows [124], [126],
  • the second control facility [3206] is for controlling a second visible-light source [136] including
  • Fig. 33 is a schematic diagram of an example [3300] of a lighting controller, being utilized together with the lighting system [900] discussed earlier in connection with Figs. 9-12.
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers are discussed herein, respectively, in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9-12.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [3300] of the implementation of the lighting controller includes a control system [3302] including a first control facility [3304] and a second control facility [3306] and a third control facility [3307],
  • the first control facility [3304] is for controlling a first visible-light source [918] including a first plurality of semiconductor light-emitting devices [920], [922] being spaced apart from and along a longitudinal axis [908], the first visible-light source [918] being positioned for directing a first beam of first visible-light emissions being represented by arrows [924], [926] from the first plurality of semiconductor light-emitting devices [920], [922] into an edge-lit lightguide panel [902] in a first beam direction being represented by the arrows [924], [926],
  • the second control facility [3306] is for controlling a first visible-light source [918] including a first plurality of semiconductor light-emitting devices [920], [922] being space
  • Fig. 34 is a flow chart of an example [3400] of a lighting control method that may be carried out, as an example, utilizing the lighting controller [1700] discussed earlier in connection with Figs. 17-21.
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers are discussed herein, respectively, in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9- 12.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controller, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [3400] of the implementation of the lighting control method starts at step [3410],
  • the example [3400] of the lighting control method includes providing a control system [1702] including a first control facility [1704] and a second control facility [1706],
  • Step [3430] of the example [3400] of the lighting control method includes placing the first control facility [1704] in control of a first visible-light source [1802] including a first plurality of semiconductor light-emitting devices [1804], [1806], [1808] being spaced apart from and along a longitudinal axis [1810]; and includes positioning the first visible-light source [1802] for directing a first beam [1812] of first visible-light emissions being represented by arrows [1814], [1815] from the first plurality of semiconductor light-emitting devices [1804], [1806], [1808] in a first beam direction also represented by the arrows [1814], [1815], Additionally, step [3430] of the
  • step [3440] may include the control system [1702] as causing the first and second beams [1812], [1824] to collectively emulate the progression [1832] of ambient sunlight by initially modulating the first intensity [1828] of the first beam [1812] to relatively be substantially greater than the second intensity [1830] of the second beam [1824], and by then gradually modulating the second intensity [1830] of the second beam [1824] to relatively become substantially greater than the first intensity [1828] of the first beam [1812],
  • step [3440] may include causing the control system [1702] to facilitate an alignment being represented by arrows [1902], [1904] of the first beam [1812] towards a first boundary represented by a dashed line [Bl] of an ambient space represented by a dashed box [S] and to facilitate another alignment being represented by arrows [1906], [1908] of the second beam [
  • step [3440] may include causing the control system [1702] to modulate the first intensity [1828] of the first beam [1812] and the second intensity [1830] of the second beam [1824] in a manner causing the first and second beams [1812], [1824] of the first and second visible-light emissions [1814], [1815], [1826], [1827] to collectively emulate the progression of ambient sunlight [1832] throughout the cycle extending from sunrise being represented by the line [1834] to sunset being represented by the line [1836],
  • step [3440] may include causing the control system [1702] to modulate the first intensity [1828] of the first beam [1812] and the second intensity [1830] of the second beam [1824] in a manner for causing the first and second beams [1812], [1824] of the first and second visible-light emissions [1814], [1815], [1826], [1818
  • step [3440] may include causing the control system [1702] to modulate the first intensity [1828] of the first beam [1812] and the second intensity [1830] of the second beam [1824] as having a maximum ratio of the first intensity [1828] divided by the second intensity [1830], or of the second intensity [1830] divided by the first intensity [1828], being at least about 100:1.
  • step [3440] may include causing the control system [1702] to modulate the first intensity [1828] of the first beam [1812] in a first range, and to modulate the second intensity [1830] of the second beam [1824] in a second range, in a manner causing the first and second beams [1812], [1824] of the first and second visible-light emissions [1814], [1815], [1826], [1827] to collectively emulate the progression of ambient sunlight [1832],
  • step [3440] may include causing the control system [1702] to control the first beam [1812] ofthe first visible-light emissions [1814], [1815] as having a first baseline intensity being represented by an arrow [1838] and to control the second beam [1824] of the second visible-light emissions [1826], [1827] as having a second baseline intensity being represented by an arrow [1840],
  • step [3440] may include causing the control system [1702] to modulate the first intensity [1828] of the first beam [1812] in a first range [1842] being additive to the first baseline intensity [1838] and to modulate the second intensity [1830] of the second beam [1824] in a second range [1844] being additive to the second baseline intensity [1840], in a manner causing the first and second beams [1812], [1824] of the first and second visible-light emissions [18
  • step [3440] may include causing the control system [1702] to cause the first control facility [1704] to control the first visible-light source [1802] with the first plurality of semiconductor light-emitting devices [1804], [1806], [1808] being collectively configured for generating the first visible-light emissions [1814], [1815] as having a selectable first perceived color point [1812],
  • step [3440] may further include causing the control system [1702] to cause the second control facility [1706] to control the second visible-light source [1816] with the second plurality of semiconductor light-emitting devices [1818], [1820], [1822] being collectively configured for generating the second visible-light emissions [1826], [1827] as having a selectable second perceived color point [1824], [00328]
  • Fig. 35 is a flow chart of an example [3500] of a lighting control method that
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers are discussed herein, respectively, in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9- 12.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [3500] of the implementation of the lighting control method starts at step [3510]
  • the example [3500] of the lighting control method includes providing a control system [2202] including a first control facility [2204] and a second control facility [2206] and a third control facility [2207]
  • step [3530] of the example [3500] of the lighting control method includes placing the first control facility [2204] in control of a first visible-light source [2302] including a first plurality of semiconductor light- emitting devices [2304], [2306], [2308] being spaced apart from and along a longitudinal axis [2310]; and includes positioning the first visible-light source [2302] for directing a first beam [2312] of first visible-light emissions being represented by arrows [2314], [2315] from the first plurality of semiconductor light-emitting devices [2304], [2306], [2308] in
  • step [3540] may include the control system [2202] as causing the first and second and third beams [2312], [2324], [2325] to collectively emulate the progression [2332] of ambient sunlight by initially modulating the first intensity [2328] of the first beam [2312] to relatively be substantially greater than the third intensity [2333] of the third beam [2325] while modulating the third intensity [2333] of the third beam [2325] to relatively be substantially greater than the second intensity [2330] of the second beam [2324], and by then gradually modulating the second intensity [2330] of the second beam [2324] to relatively become substantially greater than the third intensity [2333] of the third beam [2325] while gradually modulating the third intensity [2333] of the third beam [2325] to relatively become substantially greater than the first intensity [2328] of the first beam [2312],
  • step [3540] may include the control system [2202] as causing the first and second and third beams [2312], [2324], [2325] to collectively emulate
  • step [3540] may include causing the control system [2202] to modulate the first intensity [2328] of the first beam [2312] and the second intensity [2330] of the second beam [2324] and the third intensity [2333] of the third beam [2325] in a manner causing the first and second and third beams [2312], [2324], [2325] of the first and second and third visible-light emissions [2314], [2315], [2326], [2327], [2329], [2331] to collectively emulate the progression of ambient sunlight [2332] throughout the cycle extending from sunrise being represented by the line [2334] to sunset being represented by the line [2336],
  • step [3540] may include causing the control system [2202] to modulate the first intensity [2328] of the first beam [2312] and the second intensity [2330] of the second beam [2324] and the third intensity [2333] of the third beam
  • step [3540] may include causing the control system [2202] to modulate the first intensity [2328] of the first beam [2312] and the second intensity [2330] of the second beam [2324] as having a maximum ratio of the first intensity [2328] divided by the second intensity [2330], or as having a maximum ratio of the second intensity [2330] divided by the first intensity [2328], being at least about 100: 1.
  • step [3540] may include causing the control system [2202] to modulate the first intensity [2328] of the first beam [2312] in a first range, and to modulate the second intensity [2330] of the second beam [2324] in a second range, and to modulate the third intensity [2333] in a third range, in a manner causing the first and second and third beams [2312], [2324], [2325] of the first and second and third visible-light emissions [2314], [2315], [2326], [2327], [2329], [2331] to collectively emulate the progression of ambient sunlight [2332],
  • step [3540] may include causing the control system [2202] to control the first beam [2312] of the first visible-light emissions [2314], [2315] as having a first baseline intensity being represented by an arrow [2338] and to control the second beam [2324] of the second visible-light emissions [2326], [2327] as having a second baseline intensity being represented by an arrow [2340] and to control the third beam [2325] of the third visible-light emissions [2329], [2331] as having a third baseline intensity being represented by an arrow [2341],
  • step [3540] may include causing control system [2202] to modulate the first intensity [2328] of the first beam [2312] in a first range [2342] being additive to the first baseline intensity [2338] and to modulate the second intensity [2330] of the second beam [2324] in a second range [2344] being
  • step [3540] may include causing the control system [2202] to control the first baseline intensity [2338] and the second baseline intensity [2340] and the third baseline intensity [2341] for causing the first beam [2312] and the second beam [2324] and the third beam [2325] to collectively form a pre-set baseline pattern of the first and second and third visible-light emissions [2314], [2315], [2326], [2327], [2329], [2331],
  • step [3540] may include selecting by the control system [2202] among a plurality of different pre-programmed combinations of the baseline intensities [2338], [2340], [2341] for the first visible-light emissions [2314], [2315], the second visible-light emissions [2326], [2327], and the third visible-light emissions [2329], [2331], In some of those examples [3500] of the lighting control method, step [3540] may include selecting by the control system [2202] among a plurality of different pre-programmed combinations of the
  • step [3540] may include causing the control system [2202] to effectuate a transition, over a selectable time period, of the baseline intensities [2338], [2340], [2341] for the first visible-light emissions [2314], [2315], the second visible-light emissions [2326], [2327], and the third visible-light emissions [2329], [2331] from a one of the plurality of pre-programmed combinations to another one of the plurality of preprogrammed combinations.
  • step [3530] may include causing the control system [2202] to have the first control facility [2204] as being coupled as represented by a dashed line [2214] with the first visible-light source [2302] for controlling the first intensity [2328] of the first beam [2312] of the first visible-light emissions [2314], [2315],
  • step [3530] may further include causing the control system [2202] to have the second control facility [2206] as being coupled as represented by a dashed line [2216] with the second visible-light source [2316] for controlling the second intensity [2330] of the second beam [2324] of the second visible-light emissions [2326], [2327],
  • step [3530] may additionally include causing the control system [2202] to have the third control facility [2207] as being coupled as represented by a dashed line [
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers are discussed herein, respectively, in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9- 12.
  • Examples [3400], [3500], [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [3600] of the implementation of the lighting control method starts at step [3610], In some examples [3600], the lighting control method may include steps [3620], [3630], and [3640], and may then end at step [3650], In other examples [3600], the lighting control method may include steps [3620], [3625], [3630], [3635], [3640], and [3645], and may then end at step [3650],
  • the example [3600] of the lighting control method includes providing a control system [2702] including a first control facility [2704] and a second control facility [2706] and a third control facility [2707],
  • Step [3630] of the example [3600] of the lighting control method includes placing the first control facility [2704] in control of a first visible-light source [2802] including a first plurality of semiconductor light-emitting devices [2804], [2806], [2808] being spaced apart from and along a longitudinal axis [2810]; and includes positioning the first visible-light source [2802] for directing a first beam [2812] of first visible-light emissions being represented by arrows [2814], [2815] from the first plurality of semiconductor light-emitting devices [2804], [2806], [2808] in a first beam direction also represented by the arrows [2814], [2815], Additionally, step [3630] of the example [3600] of the lighting control method includes placing the second control facility [2706] in control of a second visible-light source [2816] including a second plurality of semiconductor light-emitting devices [2818], [2820], [2822] being spaced apart from and
  • step [3630] of the lighting control method [3600] may include causing the control system [2702] to have the first control facility [2704] as being coupled as represented by a dashed line [2714] with the first visible-light source [2802] for controlling the first intensity [2828] of the first beam [2812] of the first visible-light emissions [2814], [2815],
  • step [3630] may further include causing the control system [2702] to have the second control facility [2706] as being coupled as represented by a dashed line [2716] with the second visible-light source [2816] for controlling the second intensity [2830] of the second beam [2824] of the second visible-light emissions [2826], [2827],
  • step [3630] may additionally include causing the control system [2702] to have the third control facility [2707] as being coupled as represented by a dashed line [
  • step [3625] of the lighting control method may include providing the control system [2702] as including a fifth control facility [2720] being coupled with a fifth visible-light source [2922] including a fifth plurality of semiconductor lightemitting devices [2924], [3120], [3006] being spaced apart from and along the longitudinal axis [2810],
  • step [3635] of the lighting control method may include positioning the fifth visible-light source [2922] for directing a fifth beam [2926] of fifth visible- light emissions being represented by arrows [3126], [3127] from the fifth plurality of semiconductor light-emitting devices [2924], [3120], [3006] in a fifth beam direction also represented by the arrows [3126], [3127], being an up-light beam direction.
  • step [3645] of the lighting control method may include: causing the control system [2702] to cause the fourth control facility [2718] and the fifth control facility [2720] to respectively control a fourth intensity [3128] of the fourth beam [2920] of the fourth visible-light emissions [3114], [3115] and a fifth intensity [3130] of the fifth beam [2926] of the fifth visible- light emissions [3126], [3127]; and causing the control system [2702] to modulate the fourth intensity [3128] of the fourth beam [2920] and the fifth intensity [3130] of the fifth beam [2926],
  • step [3645] of the lighting control method may include causing the control system [2702] to cause the fourth and fifth beams [2920], [2926] to be collectively synchronized with the progression of ambient sunlight [2832] by initially modulating a fourth intensity [3128] of the fourth beam [2920] to relatively be substantially greater than a fifth intensity [3130]
  • step [3625] of the lighting control method may include providing the control system [2702] as including a sixth control facility [2722] being coupled with a sixth visible-light source [2928] including a sixth plurality of semiconductor lightemitting devices [2930], [3121], [3004] being spaced apart from and along the longitudinal axis [2810], Also in those examples [3600], step [3635] of the lighting control method may include positioning the sixth visible-light source [2928] for directing a sixth beam [2932] of sixth visible- light emissions being represented by arrows [3129], [3131] from the sixth plurality of semiconductor light-emitting devices [2930], [3121], [3004] in a sixth beam direction also represented by the arrows [3129], [3131], being an up-light beam direction.
  • step [3645] of the lighting control method may include: causing the control system [2702] to cause the fourth control facility [2718] and the fifth control facility [2720] and the sixth control facility [2722] to respectively control a fourth intensity [3128] of the fourth beam [2920] of the fourth visible-light emissions [3114], [3115] and a fifth intensity [3130] of the fifth beam [2926] of the fifth visible-light emissions [3126], [3127] and a sixth intensity [3133] of the sixth beam [2932] of the sixth visible-light emissions [3129], [3131]; and causing the control system [2702] to modulate the fourth intensity [3128] of the fourth beam [2920] and the fifth intensity [3130] of the fifth beam [2926] and the sixth intensity [3133] of the sixth beam [2932], Additionally in those examples [3600], step [3645] of the lighting control method may include causing the control system [2702] to cause the fourth and fifth and sixth beam
  • FIG. 37 is a schematic bottom perspective view showing an example [3700] of an implementation of a lighting system.
  • Fig. 38 is a schematic cross-sectional view taken along the line 38-38 showing the example [3700] of the lighting system.
  • Fig. 39 is a schematic top perspective view taken along the line 39 showing the example [3700] of an implementation of a lighting system.
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers, that may as examples be utilized together with the lighting systems that are disclosed herein, are discussed herein respectively in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9-12.
  • Examples [3400], [3500], and [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • Examples [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] of lighting systems are discussed herein, respectively, in connection with Figs.: 1-4; 5-8; 9-12; 13-16; 18-21; 22-26; 27-31; 37-39; and 40-42. It is understood throughout this specification that each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [3700] of the implementation of the lighting system includes a visible-light source [3702], an optical system [3704], a mounting system [3706], and a control system [3708],
  • the visible-light source [3702] includes a plurality of semiconductor light-emitting devices [3710], [3712], [3714],
  • the visible-light source [3702] in the example [3700] of the lighting system selectably generates visible-light emissions [3716], [3718] having a cyan-ish color point.
  • the visible-light source [3702] also selectably generates visible-light emissions [3716], [3718] having an orange-ish color point.
  • the optical system [3704] is integrated with the visible-light source [3702]
  • the optical system [3704] is arranged to combine together, into combined light emissions [3716], [3718], visible-light emissions [3716], [3718] from semiconductor light-emitting devices [3710], [3712], [3714] among the plurality of the semiconductor light-emitting devices [3710], [3712], [3714],
  • the mounting system [3706] is integrated with the visible-light source [3702]
  • the mounting system [3706] is arranged for directing the combined light emissions [3716], [3718] as being up-light emissions.
  • control system [3708] is coupled with the visible-light source [3702], and the control system [3708] selectably causes the visible-light emissions [3716], [3718] to have a cyan-ish color point or an orange-ish color point.
  • the control system [3708] and the optical system [3704] cooperatively form the combined up-light emissions [3716], [3718] as having a dynamic spectrum for emulating an orange-ish sky color at a time of day selected to represent a sunrise sky or at a time of day selected to represent a sunset sky, and changing over time for emulating a cyan-ish sky color at another time of day selected to represent a mid-day sky.
  • the cyan-ish color point is a perceived color point having a dominant wavelength being within a range of between about 480 nanometers and about 540 nanometers.
  • the cyan-ish color point is a blue, cyan, or green perceived color point having a dominant wavelength being within a range of between about 480 nanometers and about 540 nanometers.
  • the orange-ish color point is a perceived color point having a dominant wavelength being within a range of between about 575 nanometers and about 620 nanometers.
  • the orange-ish color point is a yellow, amber, yellow-orange, orange, or red-orange perceived color point having a dominant wavelength being within a range of between about 575 nanometers and about 620 nanometers
  • control system [3708] may be configured for causing the visible-light emissions [3716], [3718] to have the orange-ish color point as emulating the sunrise sky at an emulated sunrise or as emulating the sunset sky at an emulated sunset, and for causing the visible-light emissions [3716], [3718] to have the cyan-ish color point as emulating the mid-day sky at an emulated mid-day.
  • control system [3708] may be configured for causing the visible-light source [3702] to selectably generate the visible-light emissions [3716], [3718] having the cyan-ish color point as further having a relatively greater level of input power at an emulated mid-day and as additionally having a relatively lesser level of input power at an emulated sunrise or at an emulated sunset.
  • control system [3708] may be configured for causing the visible-light source [3702] to selectably generate the visible-light emissions [3716], [3718] having the orange-ish color point as further having a relatively lesser level of input power at an emulated mid-day and as additionally having a relatively greater level of input power at an emulated sunrise or at an emulated sunset.
  • the plurality of the semiconductor light-emitting devices [3710], [3712], [3714] may include a lumiphor configured for down-converting visible-light emissions [3716], [3718] of a one of the semiconductor light-emitting devices [3710], [3712], [3714] having a first dominant wavelength into further visible-light emissions [3716], [3718] having a second dominant wavelength being less than the first dominant wavelength to generate the cyan-ish color point.
  • the plurality of the semiconductor light-emitting devices [3710], [3712], [3714] may include three semiconductor light-emitting devices [3710], [3712], [3714] being mutually spaced apart by the visible-light source [3702] in a linear array, and the control system [3708] may separately provide input power for driving each one of the three of the semiconductor light-emitting devices [3710], [3712], [3714],
  • the plurality of the semiconductor light-emitting devices [3710], [3712], [3714] may further include three elongated strings [3719], [3720], [3721] each including a plurality of the semiconductor light-emitting devices.
  • the elongated string [3719] may include the semiconductor light-emitting devices [3710], [3712], [3714], and the elongated string [3720] may include semiconductor light-emitting devices [3722], [3724], and [3726], and the elongated string [3721] may include semiconductor light-emitting devices [3728], [3730], and [3732],
  • the three elongated strings [3719], [3720], [3721] may be mutually spaced apart by the visible-light source [3702] as each respectively including one of three linear arrays [3719], [3720], [3721], and the control system [3708] may separately provide input power for driving each one of the three elongated strings [3719], [3720], [3721] of the semiconductor light-emitting devices [3710], [3712], [3714], [3722], [3724], [3726], [37
  • Fig. 40 is a schematic bottom perspective view showing an example [4000] of an implementation of a lighting system.
  • Fig. 41 is a schematic cross-sectional view taken along the line 41-41 showing the example [4000] of the lighting system.
  • Fig. 42 is a schematic top perspective view taken along the line 42 showing the example [4000] of an implementation of a lighting system.
  • Examples [1700], [2200], [2700], [3200], and [3300] of lighting controllers, that may as examples be utilized together with the lighting systems that are disclosed herein, are discussed herein respectively in connection with Figs.: 17-21; 22-26; 27-31; 32, 1-4; and 33, 9-12.
  • Examples [3400], [3500], and [3600] of lighting control methods are discussed herein, respectively, in connection with Figs.: 34, 17-21; 35, 22-26; and 36, 27-31.
  • Examples [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] of lighting systems are discussed herein, respectively, in connection with Figs.: 1-4; 5-8; 9-12; 13-16; 18-21; 22-26; 27-31; 37-39; and 40-42. It is understood throughout this specification that each one of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers may be utilized together with a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • each one of the examples [3400], [3500], [3600] of the lighting control methods may be utilized together with any of the examples [1700], [2200], [2700], [3200], [3300] of the lighting controllers, for controlling a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] including any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems.
  • a lighting system [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may include any of the features or combinations of features that are disclosed in connection with any one or more of such lighting systems. Accordingly, Figs.
  • the example [4000] of the implementation of the lighting system includes a visible-light source [4002], an optical system [4004], a mounting system [4006], and a control system [4008],
  • the visible-light source [4002] includes a plurality of semiconductor light-emitting devices [4010], [4012], [4014],
  • the visible-light source [4002] in the example [4000] of the lighting system selectably generates visible-light emissions [4016], [4018] having a cyan-ish color point.
  • the visible-light source [4002] also selectably generates visible-light emissions [4016], [4018] having an orange-ish color point.
  • the optical system [4004] is integrated with the visible-light source [4002]
  • the optical system [4004] is arranged to combine together, into combined light emissions [4016], [4018], visible-light emissions [4016], [4018] from semiconductor light-emitting devices [4010], [4012], [4014] among the plurality of the semiconductor light-emitting devices [4010], [4012], [4014],
  • the mounting system [4006] is integrated with the visible-light source [4002]
  • the mounting system [4006] is arranged for directing the combined light emissions [4016], [4018] as being up-light emissions.
  • control system [4008] is coupled with the visible-light source [4002], and the control system [4008] selectably causes the visible-light emissions [4016], [4018] to have a cyan-ish color point or an orange-ish color point.
  • the control system [4008] and the optical system [4004] cooperatively form the combined up-light emissions [4016], [4018] as having a dynamic spectrum for emulating an orange-ish sky color at a time of day selected to represent a sunrise sky or at a time of day selected to represent a sunset sky, and changing over time for emulating a cyan-ish sky color at another time of day selected to represent a mid-day sky.
  • the cyan-ish color point is a perceived color point having a dominant wavelength being within a range of between about 480 nanometers and about 540 nanometers.
  • the cyan-ish color point is a blue, cyan, or green perceived color point having a dominant wavelength being within a range of between about 480 nanometers and about 540 nanometers.
  • the orange-ish color point is a perceived color point having a dominant wavelength being within a range of between about 575 nanometers and about 620 nanometers.
  • the orange-ish color point is a yellow, amber, yellow-orange, orange, or red-orange perceived color point having a dominant wavelength being within a range of between about 575 nanometers and about 620 nanometers
  • control system [4008] may be configured for causing the visible-light emissions [4016], [4018] to have the orange-ish color point as emulating the sunrise sky at an emulated sunrise or as emulating the sunset sky at an emulated sunset, and for causing the visible-light emissions [4016], [4018] to have the cyan-ish color point as emulating the mid-day sky at an emulated mid-day.
  • control system [4008] may be configured for causing the visible-light source [4002] to selectably generate the visible-light emissions [4016], [4018] having the cyan-ish color point as further having a relatively greater level of input power at an emulated mid-day and as additionally having a relatively lesser level of input power at an emulated sunrise or at an emulated sunset.
  • control system [4008] may be configured for causing the visible-light source [4002] to selectably generate the visible-light emissions [4016], [4018] having the orange-ish color point as further having a relatively lesser level of input power at an emulated mid-day and as additionally having a relatively greater level of input power at an emulated sunrise or at an emulated sunset.
  • the plurality of the semiconductor light-emitting devices [4010], [4012], [4014] may include a lumiphor configured for down-converting visible-light emissions [4016], [4018] of a one of the semiconductor light-emitting devices [4010], [4012], [4014] having a first dominant wavelength into further visible-light emissions [4016], [4018] having a second dominant wavelength being less than the first dominant wavelength to generate the cyan-ish color point.
  • the plurality of the semiconductor light-emitting devices [4010], [4012], [4014] may include three semiconductor light-emitting devices [4010], [4012], [4014] being mutually spaced apart by the visible-light source [4002] in a linear array, and the control system [4008] may separately provide input power for driving each one of the three of the semiconductor light-emitting devices [4010], [4012], [4014],
  • the plurality of the semiconductor light-emitting devices [4010], [4012], [4014] may further include three elongated strings [4019], [4020], [4021] each including a plurality of the semiconductor light-emitting devices.
  • the elongated string [4019] may include the semiconductor light-emitting devices [4010], [4012], [4014], and the elongated string [4020] may include semiconductor light-emitting devices [4022], [4024], and [4026], and the elongated string [4021] may include semiconductor light-emitting devices [4028], [4030], and [4032],
  • the three elongated strings [4019], [4020], [4021] may be mutually spaced apart by the visible-light source [4002] as each respectively including one of three linear arrays [4019], [4020], [4021], and the control system [4008] may separately provide input power for driving each one of the three elongated strings [4019], [4020], [4021] of the semiconductor light-emitting devices [4010], [4012], [4014], [4022], [4024], [4026], [40
  • the lighting system may include a further visible-light source [4034] including a further plurality of semiconductor light-emitting devices [4036], [4038], [4040], the further visible-light source [4034] generating further visible-light emissions [4042], [4044],
  • the lighting system may include a further optical system [4046] being integrated with the further visible-light source [4034]
  • the lighting system may include the optical system [3704] as being integrated with both the visible-light source [3702] and with the further visible-light source [4034],
  • the further optical system [4046] may be arranged to combine together, into further combined light emissions, further visible-light emissions [4042], [4044] from semiconductor lightemitting devices [4036], [4038], [4040] among the further plurality of the semiconductor lightemitting devices [4036], [4038], [4040],
  • the lighting system may include the mounting system [3706] as being integrated with both the visible-light source [3702] and the further visible-light source [4034],
  • the further visible-light source [4034] may be adapted to selectively generate warm white light and cool white light.
  • the further control system [4048] and the further optical system [4046] may cooperatively form the further combined downlight emissions [4042], [4044] as having another dynamic spectrum including a warm to very warm white color point for emulating the sunrise sky or for emulating the sunset sky, and including a cool to very cool white color point for emulating the mid-day sky.
  • the further control system [4048] may cause the further visible-light source [4034] to dynamically change the combined downlight emissions [4042], [4044] from warm white light to cool white light in coordination with the combined up-light emissions [4016], [4018] as changing over time between emulating the sunrise or sunset sky and emulating the mid-day sky.
  • the further control system may be for causing the combined downlight emissions [4042], [4044] of the further plurality of the semiconductor light-emitting devices [4036], [4038], [4040] to have the warm white color point with a correlated color temperature (CCT) as being within a range of between about 1800K and about 3500K at the emulated sunrise sky or at the emulated sunset sky.
  • CCT correlated color temperature
  • the further control system [4048] may be for causing the combined downlight emissions [4042], [4044] of the further plurality of the semiconductor light-emitting devices [4036], [4038], [4040] to have the cool white color point with a correlated color temperature (CCT) as being within a range of between about 3500K and about 10000K at the emulated midday sky.
  • CCT correlated color temperature
  • the further plurality of the semiconductor light-emitting devices [4036], [4038], [4040] may include three further semiconductor light-emitting devices [4036], [4038], [4040] being mutually spaced apart by the further visible-light source [4034] in a further linear array, and the further control system [4034] may separately provide input power for driving each one of the three of the further semiconductor light-emitting devices [4036], [4038], [4040] for respectively producing distributions of the further visible-light emissions [4034] as being left wall wash, center wall graze, and right wall wash.
  • the further control system [4034] may include a plurality of selectable pre-set input power distributions defining levels of relative input power for each one of the three of the further semiconductor light-emitting devices.
  • the further plurality of the semiconductor light-emitting devices [4036], [4038], [4040] includes three elongated strings [4052], [4054], [4056] each including a plurality of the semiconductor light-emitting devices [4036], [4038], [4040],
  • the elongated string [4052] may include the semiconductor light-emitting devices [4036], [4038], [4040]
  • the elongated string [4054] may include semiconductor light-emitting devices [4058], [4060], and [4062]
  • the elongated string [4056] may include semiconductor light-emitting devices [4064], [4066], and [4068]
  • the three elongated strings [4052], [4054], [4056] may be mutually spaced apart by the further visible-light source [4034] as each respectively including one
  • the further control system [4034] may include a plurality of selectable pre-set input power distributions defining further levels of relative input power for each one of the three of the elongated strings [4052], [4054], [4056] of the further semiconductor light-emitting devices [4036], [4038], [4040], [4058], [4060], [4062], [4064], [4066], and [4068],
  • the further control system [4034] may include, among the plurality of the selectable preset input power distributions: wall graze; table lighter with wall fill; wall wash right; wall wash left; double wall wash; wall wash right plus floor; wall wash left plus floor; low glare room lighter; or low glare quasi-batwing.
  • the further control system [4048] may separately provide the input power for driving each one of the three elongated strings [4052], [4054], [4056] of the semiconductor light-emitting devices [4036], [4038], [4040], [4058], [4060], [4062], [4064], [4066], and [4068] for producing the pre-set input power distributions of the further visible-light emissions [4034] for mimicking movement of the sun across the sky to affect circadian rhythms, by progressing over time from being: left wall wash at an emulated sunrise; to center wall graze at an emulated midday; to right wall wash at an emulated sunset.
  • the lighting systems [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may be utilized in order to form combined up-light emissions having a dynamic spectrum for emulating an orange-ish sky color at a time of day selected to represent a sunrise sky or to represent a sunset sky, and changing over time for emulating a cyan-ish sky color at another time of day selected to represent a mid-day sky.
  • the lighting systems [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may be further utilized in order to cause the visible-light emissions to have the orange-ish color point as emulating the sunrise sky at an emulated sunrise or as emulating the sunset sky at an emulated sunset, and for causing the visible-light emissions to have the cyan-ish color point as emulating the mid-day sky at an emulated mid-day.
  • the lighting systems [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may be utilized in order to also form combined downlight emissions having another dynamic spectrum including a warm to very warm white color point for emulating the sunrise sky or for emulating the sunset sky, and including a cool to very cool white color point for emulating the mid-day sky.
  • the lighting systems [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may be utilized in order to dynamically change the combined downlight emissions from warm white light to cool white light in coordination with the combined up-light emissions as changing over time between emulating the sunrise or sunset sky and emulating the mid-day sky.
  • the lighting systems [100], [500], [900], [1300], [1800], [2300], [2800], [3700], [4000] may be utilized in order to effectively emulate a progression of ambient sunlight, while: providing appropriate illumination for defined areas; taking into account the purpose for the illumination; being adaptable for a wide variety of area types and purposes; and providing light emissions having an appropriate and controllable brightness and perceived color point(s) and propagating with a controllable beam angle range and a controllable field angle range.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Système d'éclairage comprenant une source de lumière visible, un système optique, un système de montage et un système de commande. La source de lumière visible comprend une pluralité de dispositifs électroluminescents à semi-conducteur (SLED) et génère de manière sélective : des émissions de lumière visible présentant un point de couleur cyanâtre ; et des émissions de lumière visible présentant un point de couleur orangeâtre. Le système optique et le système de montage sont intégrés à la source de lumière visible. Le système optique est conçu pour combiner ensemble, en émissions de lumière combinées, des émissions de lumière visible provenant de SLED parmi une pluralité de SLED. Le système de montage est conçu pour diriger des émissions de lumière combinées en tant qu'émissions de lumière ascendante. Le système de commande est couplé à la source de lumière visible et amène de manière sélective des émissions de lumière visible à avoir un point de couleur cyanâtre ou un point de couleur orangeâtre. Le système de commande et le système optique forment en coopération des émissions de lumière ascendante combinées comme présentant un spectre dynamique pour émuler une couleur de ciel orangeâtre au moment du jour sélectionné pour représenter le ciel au lever du soleil ou pour représenter le ciel au coucher du soleil, changeant au cours du temps pour émuler une couleur du ciel cyanâtre à un autre moment de la journée sélectionné pour représenter le ciel de midi.
PCT/US2021/072512 2020-11-20 2021-11-19 Systèmes d'éclairage générant des émissions de lumière visible pour émuler de manière dynamique les couleurs du ciel WO2022109600A1 (fr)

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CN100476389C (zh) 2006-11-30 2009-04-08 复旦大学 采用窄光束标准光源的led光通量测试装置及测试方法
CN103222062A (zh) 2010-11-22 2013-07-24 E.I.内穆尔杜邦公司 油墨和制备含硫属元素半导体的方法
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US20210095835A1 (en) * 2016-09-26 2021-04-01 Glint Photonics, Inc. Adjustable-beam luminaires with automatic beam controller

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