EP2196725A1 - Eclairage - Google Patents

Eclairage Download PDF

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Publication number
EP2196725A1
EP2196725A1 EP09015064A EP09015064A EP2196725A1 EP 2196725 A1 EP2196725 A1 EP 2196725A1 EP 09015064 A EP09015064 A EP 09015064A EP 09015064 A EP09015064 A EP 09015064A EP 2196725 A1 EP2196725 A1 EP 2196725A1
Authority
EP
European Patent Office
Prior art keywords
luminaire
prism
reflector
lamp
light
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09015064A
Other languages
German (de)
English (en)
Inventor
Manfred Grimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP2196725A1 publication Critical patent/EP2196725A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • 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
    • 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]

Definitions

  • the present invention relates to a luminaire with a luminaire housing, and at least one longitudinally extending elongate luminous means, wherein at least a portion of the luminaire is covered at the bottom by a partially translucent prism plate and wherein below at least one luminous means is provided at least one opaque cover member which prevents direct light leakage from the bulb directly down.
  • Luminaires of the aforementioned type have a first portion of light, which is radiated downward and thereby exits through the prismatic plate and another portion of light, which is emitted from the lamp up towards the ceiling and reflected from the ceiling in the room and thus indirectly on a zone to be illuminated falls, for example, a workplace in a room.
  • These lights are also referred to as direct / indirect-radiating.
  • a ceiling pendant lamp of the aforementioned type in which two fluorescent lamps are located in the outer edge regions of the lamp and are covered at the bottom over each closed areas of the lamp housing. In a central area between the two bulbs, the opening of the lamp is covered by a prismatic plate. There are also obliquely upwardly directed to the luminaire center inclined arranged Lichtleitbleche used to direct the proportion of light upwards and to let only light rays at shallower angles downwards through the prismatic plate.
  • the aforementioned luminaire has a very flat luminaire housing and is particularly suitable for illuminating workplaces which have an increased requirement for reflected glare, and display workstations that have a highly tilted or flat screen.
  • An advantage with luminaires of this type is that the light is decoupled so that below the 0 ° -30 ° level the luminance is ⁇ 1000 cd / m 2 .
  • the 0 ° -30 ° plane is the plane at which reflected glare is created by the ray path of the light.
  • a luminaire in which two fluorescent lamps are located in the central region of the luminaire and under these a conventional luminaire grid with longitudinal reflectors and cross blades is arranged. Hollow chambers are also provided on both sides of the fluorescent lamps, the underside of which is covered in each case by plate-shaped light distribution elements, through which light emerges downwards. These light distribution elements are intended to diffuse the light diffusely.
  • This luminaire is also a direct / indirect light, as light is also emitted upwards towards the ceiling. The direct light emission from the light source directly downwards is not prevented here. This proportion of light is directed in the known lamp only by the lighting grid in a conventional manner.
  • Both prior art luminaires are those in which the indirect component of the radiated light results from the fact that the luminaire housing has a light-permeable cover at the top of the luminaire or the luminaire is partially open at the top. In the Normally, this concept can only be realized with luminaires suspended from the ceiling (pendant luminaires).
  • the object of the present invention is to provide a luminaire of the type mentioned above with a cover on the underside by a prismatic plate, which is based on an alternative lighting concept, has good Entblendungseigenschaften according to the standard and at the high luminance on the prism plate in Be avoided area below the bulb.
  • At least one light source is arranged approximately in the central region of the luminaire and below this luminous means is at least one counter reflector, which reflects a part of the luminous flux emitted by the luminous means to a main reflector arranged above the luminous means and light reflected by this main reflector through the prism plate down through the luminaire.
  • the counter-reflector is narrower than the main reflector, whereby a partial current of the light from the bulb falls on the main reflector, but a further partial current can also fall past the counter-reflector down on the prism plate. This can pass through the prism plate and thereby be deflected by refraction according to the specific configuration of the prismatic plate. Part of the light is also reflected by the total reflection at this prism plate and then strikes the main reflector.
  • the width of the counter-reflector is preferably only a fraction of the width of the main reflector.
  • the shape of the counter-reflector depends inter alia on the arrangement of the lamps in the lamp, for example, their vertical distance from the main reflector and can also vary, for example, depending on the type of luminaire (surface-mounted, recessed, etc.), For example, forms with at least one laterally outer to horizontal downwardly angled or curved legs preferably, if the one or more bulbs are closer to the main reflector, that is further inside the lamp housing and it is then when the (vertical) distance of the bulbs from the main reflector is larger, shapes preferred in which the Counter reflector has at least one laterally outer to the horizontal upwardly angled or curved leg.
  • elongated illuminant is rather to be understood that this may also be an elongated arrangement of several bulbs.
  • the technical nature of the illuminant used is not critical in the context of the present invention. This can be, for example, an arrangement of LEDs, for example in the form of an elongated LED strip, a single fluorescent lamp or even a plurality of fluorescent lamps. In principle, come within the scope of the invention as light bulbs gas discharge lamps, light-emitting diodes, induction lamps, light foils or incandescent lamps into consideration, provided that they have a suitable geometric shape and the desired photometric properties.
  • the light source which includes, for example, one or more fluorescent lamps or an array of light emitting diodes, may also be located outside a ceiling (partially) recessed luminaire housing, in particular in recessed luminaires also the bottom of the lamp by a trough-shaped or in cross-section U-shaped prism cover may be covered, which includes the prism plate.
  • a lateral region of the trough-shaped or U-shaped prism cover may have a different prism structure than that of the prism plate comprehensive remaining area of the prism cover. This lateral area can be used to deflect a light component that laterally escapes through the trough-like or U-shaped prismatic cover through the prismatic structure towards the ceiling.
  • This proportion of light is then reflected by the ceiling and thus serves as an indirectly emitted light component.
  • the prismatic cover in this lateral region with a different prismatic profile structure than in the lower region of the prismatic plate, which deflects the incidence of light coming from the luminaire downwards.
  • sawtooth prisms may be arranged in the lateral region.
  • primers having a substantially triangular structure with an acute-angled or rectangular profile can be used.
  • the invention is by no means limited to such a prism structure. Rather, it depends on which emission characteristic is desired in each case and the prism structure is adjusted accordingly. For example, a comparatively sharp-edged prism structure has proved to be advantageous for the prism plate since, in this case, directed light guidance through the prism plate is better achieved.
  • the prism structure is preferably aligned either in the lamp longitudinal direction or in the longitudinal direction and in the transverse direction of the lamp axis direction. In the latter case, it may be, for example, a pyramidal prism structure.
  • the main reflector of the luminaire is parabolic in cross section.
  • the usually much narrower counter reflector is seen from the main reflector on the other side of the bulb arranged and can be designed, for example, single or multiple angled or curved.
  • the luminaire according to the invention is a recessed ceiling or ceiling luminaire. If the main reflector is partially open at the top, the lighting principle can also be applied to pendant or floor lamps.
  • the prism structure of the prism plate according to the invention preferably follows the lamp direction.
  • the prism plate used as a partial lower cover of the lamp could also possibly omit, in particular, if one replaced the prism plate by another cover with similar light scattering and / or light-directing properties, for example by a differently constructed translucent cover.
  • FIG. 1 shows a schematically simplified cross section through a lamp according to a first possible embodiment of the present invention.
  • a ceiling-mounted luminaire or recessed ceiling luminaire with a rectangular, for example, rectangular elongate comparatively flat luminaire housing 10, in which the usual electrical installation devices such as ballasts, connection devices, etc. are accommodated, which will not be discussed in detail here.
  • a substantially parabolic reflector 11 is arranged in the cross-section for the light control, within which there is an elongate fluorescent lamp 12 as the illuminant, whose axis extends in the longitudinal direction of the housing.
  • the fluorescent lamp is arranged in the upper region of the reflector and is located approximately in the center of the reflector, seen in the transverse direction of the lamp.
  • the housing of the luminaire is covered by a prism plate 13, which closes the cavity provided by the reflector and through which the light emerging down passes through.
  • This prism plate 13 is one in which parallel in cross-section approximately triangular prisms extend in the longitudinal direction of the lamp. These triangular prisms can, for example, have a pointed or right angle on the underside.
  • a counter-reflector 14 is now located underneath the fluorescent lamp 12, by means of which a direct emission of the luminous flux coming from the fluorescent lamp vertically downwards onto the prism plate 13 is avoided, so that an excessively high luminance on the prism plate underneath the lamp is prevented.
  • the latter would be the concern of achieving a directed exit of the light with the desired non-glare Lichtabstrahl characterizing run counter.
  • a partial current of the light thus initially falls from the fluorescent lamp 12 to the counter-reflector 14 and is reflected upwards past the lamp onto the main reflector 11. From there, the light is then reflected in a corresponding angle according to the laws of optics, falls on the prism plate 13, there undergoes a deflection by refraction and exits down from the lamp in the desired beam angle.
  • a partial current of the light falls from the fluorescent lamp 12, starting laterally or upwards and impinges directly on the main reflector 11, where it is reflected in accordance with in the direction of the prism plate, through which it then exits after refraction.
  • Another sub-stream of light falls from the fluorescent lamp 12 laterally down past the counter-reflector 14 and then passes at a shallower angle directly to the prism plate 13, where the light rays are deflected again and emerge down. At steep angles, however, because of the counter-reflector 14 arranged there, the light from the lamp 12 can not fall directly down onto the prism plate 13.
  • the partial flow which is radiated laterally downwards from the fluorescent lamp 12 at even flatter angles is also reflected at the top side of the prism plate due to the total reflection and thus does not pass directly therethrough. This portion of the light is thus thrown by the reflection on the main reflector 11, there again reflected and exits at a different angle downwards through the prism plate 13.
  • the shape of the counter-reflector 14 is as you look FIG. 1 can recognize so that a central in the installed state flat approximately horizontal portion 14 a below the fluorescent lamp 12 is provided, to which on both sides in each case laterally at an obtuse angle downwardly angled legs 14 b, 14 c connected.
  • a similar one lighting effect can be achieved if the counter reflector is not bent twice but curved forms with a similar basic shape, but the middle section and the two lateral legs merge into one another in a radius.
  • FIG. 1 a shows an alternative embodiment of a luminaire with a similar constructive structure as in the variant according to FIG. 1 , wherein here, however, an LED strip 12 a is used as the light source.
  • an LED strip 12 a is used as the light source. It can be seen in the cross section only one LED, but there are usually a larger number of such LEDs arranged in a row one behind the other in the longitudinal direction of the lamp, which is preferably a so-called LED bar, which with the entirety of the LEDs also represents an elongated light source.
  • the individual LEDs can have a smaller or larger distance between each other.
  • the LEDs emit their light towards the top of the main reflector 11, from where it is then reflected downwards.
  • the counter reflector prevents the insight into the light bulb through the translucent lower cover.
  • the counter reflector 14 could also use the counter reflector 14 to cool in the case of excessive heat in the area of the bulbs this. It is possible, for example, to form the counter-reflector with a somewhat greater material thickness or with ribs or the like on the underside in order to create a larger surface and thus dissipate the heat developed by the LEDs via the counter-reflector 14 on which they are mounted.
  • FIG. 2 shows an alternative embodiment of the luminaire according to the invention, which is mainly used for recessed ceiling luminaires into consideration. Accordingly, the light is in FIG. 2 shown in a built-in a ceiling 15 state.
  • the luminaire housing 10 is received in this variant mainly from the ceiling 15.
  • a cross-section of a trough-shaped or U-shaped prism cover 16 is used, which comprises a horizontal prism plate 13, which may have a similar structure as in the embodiment variant already described above FIG. 1 ,
  • the Prism cover 16 is located below (outside) the ceiling 15, in which the lamp is installed.
  • the main reflector 11 is also parabolic in cross section here.
  • the fluorescent lamp also extends here in the longitudinal direction, wherein the housing is preferably again designed to be rectangular and in FIG. 2 is shown cut in the transverse direction. Unlike the variant described above, however, in the variant according to FIG. 2 arranged the fluorescent lamp 12 at a greater distance from the main reflector 11, so that the fluorescent lamp 12 compared with the variant of FIG. 1 located below, their axis runs here below the built-in ceiling of the lamp and thus slightly below the ceiling 15. This results in other lighting conditions.
  • the counter reflector 14 is also in the variant FIG.
  • the counter-reflector in turn has a central horizontal portion, to which, however, laterally angled legs adjoin each other on both sides, which are angled upwards at an obtuse angle.
  • rays emanating from the fluorescent lamp 12 can only reach the prism plate 13 when they are radiated at even shallower angles.
  • a larger proportion of the light emitted by the lamp is therefore emitted by the counter-reflector 14 in the direction of the main reflector 11 and is then reflected by it in the direction of the prism plate 13.
  • the prism cover 16 has a trough shape or U-shape with lateral regions 17 which, as can be seen, are approximately at the level of the fluorescent lamp 12, a lateral light exit through the lateral regions 17 is possible here.
  • luminous flux components emitted by the fluorescent lamp 12, which impinge on the upper side of the prism plate 13 at shallow angles, are reflected by total reflection at the latter and, when passing through the lateral areas, which are likewise designed as a prism plate are, broken and distracted and then hit the ceiling 15 in the vicinity of the lamp.
  • the enlarged detail view according to FIG. 3 shows that the side portions 17 are formed as a prism plate having a sawtooth prism profile structure on the outside, whereas the bottom of the horizontal prism plate 13 has a triangular prism profile structure with isosceles triangles.
  • the height of the luminaire is according to FIG. 2 slightly larger than in the variant according to FIG. 1 .
  • cross-sectional shape of the prism cover 13, 16 and prism profile structure of the prism cover 16 and prism plate 13th you can vary the emission characteristics of the lamp according to the invention.
  • luminaires with only one fluorescent lamp 12 were shown.
  • FIG. 4 the beam path of the light emission of a lamp according to the invention of FIG. 1 illustrated type explained in more detail.
  • Another light beam 19 is shown, which is incident from the lamp 12 at a steeper angle on the prism plate 13 and exits through the latter downwardly out of the lamp.
  • a third light beam 20 is drawn, which first of the lamp 12 falls on the counter reflector 14, is reflected by this at the appropriate angle upwards and then hits the main reflector 11, is reflected at this turn down, then on the Prism plate 13 hits, there is broken and emerges down from the light.
  • FIG. 5 the beam path of the light emission of a lamp according to the invention of FIG. 2 illustrated type explained in more detail.
  • a light beam 21 is shown, which is initially emitted from the lamp 12 upwards and falls on the main reflector 11, where it is reflected downwards, so that it falls on the prism plate 13, where a refraction With change of direction occurs, so that the beam 21 in the direction shown downwards out of the lamp.
  • the light beam 23 is directed by the lamp 12 starting downwards and first meets the counter-reflector 14 so that it is deflected towards the top of the main reflector 11. In this he meets at a relatively steep angle and is reflected there accordingly and deflected downwards, where he meets the prism plate 13 and is broken there, finally to exit to the right down out of the lamp.
  • the light beam 24 on the right side in the drawing emerges at a shallower angle from the lamp 12 to the right, so that it radiates past the counter-reflector 14 and at a relatively shallow angle to the prism plate 13 and reflected there due to the total reflection becomes.
  • This light beam 24 then applies to the above FIG. 2 described lateral area 17 of the prism cover and is there broken and deflected upward to the ceiling.
  • FIG. 4 shows a variant of the lamp, which is designed as a ceiling-mounted luminaire, in which the housing comprises a base body 26. Within this body 26 is located in the lower inner area an encircling in cross-section U-shaped angle frame 27, the lower horizontal leg 27 a can serve as a support for the prism plate 13.
  • the same basic body 26 in principle for a variant of the lamp according to FIG. 5 can use, in which this is designed as a ceiling light.
  • a Z-bracket 28 to be mounted on the outside of the vertical part of the main body 26, whose upper horizontal inwardly pointing leg 28 b rests on the base body 26 and whose lower horizontal outwardly pointing leg 28 a engages under the ceiling 15 the lamp is installed.
  • the housing base body 26 of a ceiling-mounted luminaire also for a recessed ceiling luminaire with comparatively simple means and slight changes.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP09015064A 2008-12-09 2009-12-04 Eclairage Withdrawn EP2196725A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008060874A DE102008060874A1 (de) 2008-12-09 2008-12-09 Leuchte

Publications (1)

Publication Number Publication Date
EP2196725A1 true EP2196725A1 (fr) 2010-06-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015064A Withdrawn EP2196725A1 (fr) 2008-12-09 2009-12-04 Eclairage

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EP (1) EP2196725A1 (fr)
DE (1) DE102008060874A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013105727U1 (de) * 2013-12-17 2015-03-18 Zumtobel Lighting Gmbh Leuchtenanordnung sowie Leuchte
WO2015042188A1 (fr) * 2013-09-17 2015-03-26 Quarkstar Llc Luminaire doté d'un modificateur optique
US9028120B2 (en) 2011-08-08 2015-05-12 Quarkstar Llc Illumination devices including multiple light emitting elements
US9081125B2 (en) 2011-08-08 2015-07-14 Quarkstar Llc Illumination devices including multiple light emitting elements
US9206956B2 (en) 2013-02-08 2015-12-08 Quarkstar Llc Illumination device providing direct and indirect illumination
US9335462B2 (en) 2013-07-18 2016-05-10 Quarkstar Llc Luminaire module with multiple light guide elements
US9410680B2 (en) 2013-04-19 2016-08-09 Quarkstar Llc Illumination devices with adjustable optical elements
US9746173B2 (en) 2012-09-13 2017-08-29 Quarkstar Llc Illumination devices including enclosure panels with luminaire modules
US9846272B2 (en) 2012-09-13 2017-12-19 Quarkstar Llc Illumination systems providing direct and indirect illumination
DE102017107969A1 (de) * 2017-04-12 2018-10-18 Lisa Dräxlmaier GmbH Beleuchtungsvorrichtung für ein Innenausstattungsteil eines Kraftfahrzeuges
US12130007B2 (en) 2021-05-27 2024-10-29 Signify Holding B.V. Dual-reflector lighting device

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DE102010037630A1 (de) 2010-09-17 2012-03-22 Manfred Grimm Leuchte
DE102012102732B4 (de) * 2012-03-29 2015-12-31 Siteco Beleuchtungstechnik Gmbh Leuchte mit Lichtabstrahlung in einen Randbereich
DE202012101368U1 (de) 2012-04-13 2012-05-07 Manfred Grimm Leuchte
DE102013018549A1 (de) * 2013-11-05 2015-05-07 Siteco Beleuchtungstechnik Gmbh Beleuchtungsvorrichtung
DE202014103671U1 (de) * 2014-08-07 2015-11-10 Zumtobel Lighting Gmbh Flächige Ausstellungsleuchte

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EP1628070A2 (fr) * 2004-08-18 2006-02-22 Aldi Einkauf GmbH & Co. oHG Dispositif d'éclairage

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US3113728A (en) * 1960-06-24 1963-12-10 Owens Illinois Glass Co Artificial light and daylighting structure
US5803592A (en) * 1996-11-22 1998-09-08 Austin Air Systems Limited Light source
EP1130310A2 (fr) * 2000-03-03 2001-09-05 Siteco Beleuchtungstechnik GmbH Luminaire à conducteur de lumière creux avec une lampe intégrée dans la cavité
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Cited By (33)

* Cited by examiner, † Cited by third party
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US11703631B2 (en) 2011-08-08 2023-07-18 Quarkstar Llc Illumination devices including multiple light emitting elements
US9028120B2 (en) 2011-08-08 2015-05-12 Quarkstar Llc Illumination devices including multiple light emitting elements
US9081125B2 (en) 2011-08-08 2015-07-14 Quarkstar Llc Illumination devices including multiple light emitting elements
US10859758B2 (en) 2011-08-08 2020-12-08 Quarkstar Llc Illumination devices including multiple light emitting elements
US10823905B2 (en) 2011-08-08 2020-11-03 Quarkstar Llc Illumination devices including multiple light emitting elements
US9746173B2 (en) 2012-09-13 2017-08-29 Quarkstar Llc Illumination devices including enclosure panels with luminaire modules
US10190762B2 (en) 2012-09-13 2019-01-29 Quarkstar Llc Devices for workspace illumination having a panel forming an enclosure and a plurality of light emitters with primary and secondary optics
US9846272B2 (en) 2012-09-13 2017-12-19 Quarkstar Llc Illumination systems providing direct and indirect illumination
US9206956B2 (en) 2013-02-08 2015-12-08 Quarkstar Llc Illumination device providing direct and indirect illumination
US9410680B2 (en) 2013-04-19 2016-08-09 Quarkstar Llc Illumination devices with adjustable optical elements
US10180240B2 (en) 2013-04-19 2019-01-15 Quarkstar Llc Illumination devices with adjustable optical elements
US10132988B2 (en) 2013-07-18 2018-11-20 Quarkstar Llc Luminaire module with multiple light guide elements
US9459398B2 (en) 2013-07-18 2016-10-04 Quarkstar Llc Illumination device in which source light injection is non-parallel to device's optical axis
US9335462B2 (en) 2013-07-18 2016-05-10 Quarkstar Llc Luminaire module with multiple light guide elements
US10838138B2 (en) 2013-07-18 2020-11-17 Quarkstar Llc Luminaire module with multiple light guide elements
US10288798B2 (en) 2013-07-18 2019-05-14 Quarkstar Llc Illumination device in which source light injection is non-parallel to device's optical axis
US10146002B2 (en) 2013-09-17 2018-12-04 Quarkstar Llc Luminaire with optical modifier
US11150400B2 (en) 2013-09-17 2021-10-19 Quarkstar Llc Illumination device for direct-indirect illumination
US9557030B2 (en) 2013-09-17 2017-01-31 Quarkstar Llc Light guide illumination device for direct-indirect illumination
WO2015042188A1 (fr) * 2013-09-17 2015-03-26 Quarkstar Llc Luminaire doté d'un modificateur optique
US10203446B2 (en) 2013-09-17 2019-02-12 Quarkstar Llc Light guide illumination device with light divergence modifier
US11693174B2 (en) 2013-09-17 2023-07-04 Quarkstar Llc Illumination device for direct-indirect illumination
US10495807B2 (en) 2013-09-17 2019-12-03 Quarkstar Llc Light guide illumination device for direct-indirect illumination
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US10725229B2 (en) 2013-09-17 2020-07-28 Quarkstar Llc Illumination device for direct-indirect illumination
US9354377B2 (en) 2013-09-17 2016-05-31 Quarkstar Llc Light guide illumination device with light divergence modifier
US10094969B2 (en) 2013-09-17 2018-10-09 Quarkstar Llc Illumination device for direct-indirect illumination
US9891371B2 (en) 2013-09-17 2018-02-13 Quarkstar Llc Light guide illumination device for direct-indirect illumination
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