WO2024017704A1 - Commande d'un système de lumière ultraviolette - Google Patents

Commande d'un système de lumière ultraviolette Download PDF

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Publication number
WO2024017704A1
WO2024017704A1 PCT/EP2023/069143 EP2023069143W WO2024017704A1 WO 2024017704 A1 WO2024017704 A1 WO 2024017704A1 EP 2023069143 W EP2023069143 W EP 2023069143W WO 2024017704 A1 WO2024017704 A1 WO 2024017704A1
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WO
WIPO (PCT)
Prior art keywords
ultraviolet light
light
different
wavelength bands
wavelength band
Prior art date
Application number
PCT/EP2023/069143
Other languages
English (en)
Inventor
Ties Van Bommel
Evren ÖZCAN
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Signify Holding B.V.
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 Signify Holding B.V. filed Critical Signify Holding B.V.
Publication of WO2024017704A1 publication Critical patent/WO2024017704A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24—Apparatus using programmed or automatic operation
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/196—Controlling the light source by remote control characterised by user interface arrangements
    • H05B47/1965—Controlling the light source by remote control characterised by user interface arrangements using handheld communication devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation

Definitions

  • This invention relates to ultraviolet light systems, and in particular to the control of ultraviolet light systems.
  • UV-A ultraviolet-A
  • UV-B ultraviolet-B
  • UV-C ultraviolet-C
  • UVA is usable for bactericidal or skincare/tanning lighting
  • UVB is usable for promoting the generation of Vitamin D in humans or animals
  • UVC is usable for viricidal and antimicrobial lighting.
  • UVA The World Health Organization
  • UVB As covering the wavelength band 280nm to 315nm
  • UV-C as covering the wavelength band lOOnm to 280nm.
  • US 2021/0369891 Al discloses an antimicrobial lighting system including an antimicrobial lighting array that emits antimicrobial light within one or more antimicrobial wavelength ranges to inactivate one or more microorganisms on common touch surfaces.
  • the common touch surfaces may include, for example, restaurant menus, airline safety instructions, pamphlets, instruction cards, or other common touch objects having a generally flat form factor, or that can be reduced to a flat form factor.
  • Application of the antimicrobial light to the common touch surfaces may improve hygiene of such common touch surfaces and may help maintain microbial growth below acceptable levels.
  • US 2020/0267814 Al discloses a lighting apparatus including a controller including a real time clock, an LED driver, and an LED luminaire including a first light emitting unit including a first LED to emit light having a peak wavelength between 300 to 470 nm and a wavelength converter, and at least one of a second light emitting unit to emit light having a peak wavelength between 286 to 304 nm to cause production of vitamin D, a third light emitting unit to emit light having a peak wavelength between 605 to 935 nm to cause production of a cell activating substance, and a fourth light emitting unit to emit light having a peak wavelength between 400 to 430 nm to sterilize pathogenic microorganisms, in which the controller controls the LED driver to change an irradiance of light emitted from at least one of the light emitting units according to time.
  • a control system for controlling the operation of an ultraviolet light system configured to emit ultraviolet light configured to emit at least two different wavelength bands of ultraviolet light.
  • Each of the at least two different wavelength bands is a different one of the following: a first wavelength band of between lOOnm and 280nm; a second wavelength band of between 280nm to 315nm and a third wavelength band of between 315nm and 400nm.
  • Each of the at least two different wavelength bands is configured to predominantly provide a different set of at least one of the following: a viricidal effect, a bactericidal effect and a promotion of vitamin-D generation effect.
  • the ultraviolet light system is configured such that a light intensity of each of the at least two different wavelength bands of ultraviolet light is individually controllable
  • the ultraviolet light system is configured such that the light intensities of at least two different wavelength bands of ultraviolet light emitted by the ultraviolet light system are controllable.
  • the control system comprises: at least one input interface; at least one output interface and a controller.
  • the controller is configured to: receive, via the at least one input interface, from a user interface, a user indication of a selected one of a plurality of selectable interface elements, wherein each selectable interface element represents a different combination of desired effects of ultraviolet light that the ultraviolet light system is adapted to provide, the desired effects including a desired viricidal effect, a desired bactericidal effect and/or a desired promotion of vitamin-D generation effect; and determine a light intensity of each the at least two different wavelength bands of ultraviolet light of the ultraviolet light system based on the received user indication, such that the light intensities of the at least two different wavelength bands of ultraviolet light: (i) align with the combination of the desired effects represented by the selected interface element, and (ii) provide a clinically safe combination of light intensities; and output, via the at least one output interface, the determined light intensities to the ultraviolet light system.
  • Proposed embodiments are based on the recognition that the combination of different ultraviolet light intensities (of different wavelengths) provided by an ultraviolet light system can be dangerous or cause adverse (health) effects in individuals.
  • a controller to ensure that only clinically safe combinations of ultraviolet light are output by the ultraviolet light system, it is possible to avoid or reduce a chance of adverse health effects in the individual whilst still achieving or responding to user-indicated desired effects for the ultraviolet light.
  • the proposed mechanism thereby provides a highly reliable and efficient system for ensuring safe illumination of an individual with ultraviolet light, whilst ensuring that desired effects are still provided.
  • the various benefits of ultraviolet light are well established, e.g., for viricidal disinfection and/or bactericidal disinfection and/or promotion of Vitamin-D generation.
  • the proposed system provides an approach for facilitating safe user control of the effects of ultraviolet light emitted by the ultraviolet light system.
  • Each combinations of desired effects can indicate a desired magnitude or level of each of a plurality of possible effects of the ultraviolet light that can be emitted by the ultraviolet light system.
  • a maximum value for each of the determined light intensities represents the maximum safe intensity of light for the associated wavelength band. This approach will prevent and/or avoid unsafe intensities of light from being provided to an individual, e.g., in the instance that only a single wavelength band of light is provided to the individual.
  • the user interface provides a one-dimensional slider, with different user-indicated positions in the one-dimensional slider representing different selectable interface elements and therefore different combinations of desired effects. This provides a simple and intuitive mechanism for facilitating user control of the combination of light intensities used to provide desired effects.
  • the ultraviolet light system may be configured such that the light intensities of at least three different wavelength bands of ultraviolet light emitted by the ultraviolet light system are controllable by the control system.
  • the user interface may provide a two-dimensional slider, with different user- indicated positions in the two-dimensional slider representing different selectable interface elements and therefore different combinations of the desired effects.
  • the two-dimensional slider may effectively represent a two-dimensional solution space.
  • a two-dimensional slider provides a useful and intuitive mechanism for controlling between three potential parameters, i.e., levels or magnitudes of particular effects that can be provided by the ultraviolet light system.
  • the two-dimensional slider represents a predetermined shape.
  • Each of a plurality of predetermined positions around the predetermined shape may represent a different effect, namely a different one of the following: a viricidal effect, a bactericidal effect and a promotion of vitamin-D generation effect.
  • the predetermined shape is a polygon or a polygonal shape.
  • Each predetermined position may be a vertex of the polygon.
  • the two-dimensional slider may represent a polygonal shape, each vertex of the polygonal shape representing a different effect.
  • the predetermined shape is a circle or annulus.
  • control arrangement comprising any herein described control system and the user interface.
  • a lighting system comprising the ultraviolet light system and the control system and/or control arrangement herein described.
  • the ultraviolet light system is configured to emit at least two different wavelength bands of ultraviolet light, wherein each of the at least two different wavelength bands is a different one of the following: a first wavelength band of between lOOnm and 280nm; a second wavelength band of between 280nm to 315nm and a third wavelength band of between 315nm and 400nm; wherein each of the at least two different wavelength bands are configured to predominantly provide a different set of at least one of the following: a viricidal effect, a bactericidal effect and a promotion of vitamin-D generation effect; and wherein the ultraviolet light system is configured such that a light intensity of each of the at least two different wavelength bands of ultraviolet light is individually controllable.
  • the ultraviolet light system may be configured such that, in each of the least two different wavelength bands, the peak intensity in said wavelength band is at a wavelength that is at least 30nm different to the wavelength for the peak intensity in each other wavelength band in the least two different wavelength bands.
  • the ultraviolet light system comprises at least two light emitting modules, each light emitting module being configured to emit ultraviolet light having a peak intensity in a different one of the at least two different wavelength bands; and the at least two light emitting modules are configured such that the ultraviolet light emitted by each light emitting module spatially overlaps the ultraviolet light emitted by each other light emitting module.
  • the ultraviolet light system may be configured such that the light intensities of at least three different wavelength bands of ultraviolet light emitted by the ultraviolet light system are controllable by the control system wherein the at least three different wavelength bands include: a first wavelength band of between lOOnm and 280nm; a second wavelength band of between 280nm to 315nm and a third wavelength band of between 315nm and 400nm.
  • the viricidal effect is may be provided by the first wavelength band of between lOOnm and 280nm, the promotion of vitamin-D generation effect may be predominantly provided by the second wavelength band of between 280nm and 315nm, and the bactericidal effect may be predominantly provided by the third wavelength band of between 315nm and 400nm.
  • Each of the at least two different wavelength bands is a different one of the following: a first wavelength band of between lOOnm and 280nm; a second wavelength band of between 280nm to 315nm and a third wavelength band of between 315nm and 400nm.
  • Each of the at least two different wavelength bands is configured to predominantly provide a different set of at least one of the following: a viricidal effect, a bactericidal effect and a promotion of vitamin-D generation effect.
  • the ultraviolet light system is configured such that a light intensity of each of the at least two different wavelength bands of ultraviolet light is individually controllable
  • the ultraviolet light system is configured such that the light intensities of at least two different wavelength bands of ultraviolet light emitted by the ultraviolet light system are controllable.
  • the computer-implemented method comprises: receiving from a user interface, a user indication of a selected one of a plurality of selectable interface elements, wherein each selectable interface element represents a different combination of desired effects of ultraviolet light that the ultraviolet light system is adapted to provide, the desired effects including a desired viricidal effect, a desired bactericidal effect and/or a desired promotion of vitamin-D generation effect; determining a light intensity of each the at least two different wavelength bands of ultraviolet light of the ultraviolet light system based on the received user indication, such that the light intensities of the at least two different wavelength bands of ultraviolet light (i) align with the combination of the desired effects represented by the selected interface element, and (ii) provide a clinically safe combination of light intensities; and outputting the determined light intensities to the ultraviolet light system.
  • the computer-implemented method may be adapted to perform any process performed by the control system as previously described.
  • Fig. 1 illustrates different wavelength bands of ultraviolet light
  • Fig. 2 illustrates a lighting system
  • Fig. 3 illustrates exposure limits for different wavelengths of ultraviolet light
  • Fig. 4 illustrates an interactive feature for a user interface
  • Fig. 5 illustrates another interactive feature for a user interface
  • Fig. 6 illustrates yet another interactive feature for a user interface
  • Fig. 7 illustrates a control system
  • Fig. 8 illustrates a computer-implemented method. DETAILED DESCRIPTION OF THE EMBODIMENTS
  • the invention provides a mechanism for controlling an ultraviolet light system.
  • the ultraviolet light system is configured to output ultraviolet light.
  • the light intensity in two or more wavelength bands of the ultraviolet light are individually controllable by a control system.
  • the control system controls or sets the light intensity in the two or more wavelength bands responsive to a user indication at a user interface.
  • the user indication identifies a selected interactive element at the user interface. Different interactive elements represent different desired effects of the ultraviolet light to be output by the ultraviolet light system.
  • Embodiments particularly recognize that there are combinations of light intensities of different wavelengths that alone would be clinically safe, but in combination would cause adverse effects in an individual. As different wavelength bands of light achieve or provide different dominant desirable effects, it is possible to allows a user to select a particular desired combination of effects and control the combination of light intensities to achieve or align with this combination of effects, whilst remaining clinically safe.
  • Disclosed approaches can be employed in any environment in which ultraviolet light systems are employed, e.g., in industry, healthcare, educational, domestic or public environments.
  • an intensity may refer to a peak intensity, also known as a dominant intensity, in the frequency spectrum, e.g. an intensity representing a maxima in the frequency spectrum.
  • all wavelength bands are ultraviolet wavelength bands (as they refer to wavelength bands of ultraviolet light).
  • Figure 1 illustrates example wavelengths of light that can be emitted by an ultraviolet light system, particularly one comprising a plurality of different light emitting modules or elements.
  • the x-axis represents a wavelength of light in nm
  • the y-axis illustratively represents an intensity of light.
  • Different lines represent different light emitting modules, demonstrating how different light emitting modules can output light in different wavelength bands, particularly having peak intensities in different wavelength bands.
  • a first light emitting module 110 (solid line) is configured to emit ultraviolet light in a first wavelength band i. More particularly, the peak intensity Ii of ultraviolet light emitted by the first light emitting module falls within the first wavelength band i.
  • the first wavelength band is between lOOnm and 280nm. The ultraviolet light emitted by the first light emitting module is thereby Ultraviolet-A light or UVA light.
  • a second light emitting module 120 (dotted line) is configured to emit ultraviolet light in a second wavelength band 2. More particularly, the peak intensity I2 of ultraviolet light emitted by the second light emitting module falls within the second wavelength band 2.
  • the second wavelength band is between 280nm to 315nm. The ultraviolet light emitted by the second light emitting module is thereby Ultraviolet-B or UVB light.
  • a third light emitting module 130 (dashed line) is configured to emit ultraviolet light in a third wavelength band fa. More particularly, the peak intensity I3 of ultraviolet light emitted by the third light emitting module falls within the third wavelength band fa.
  • the third wavelength band is between 315nm and 400nm. The ultraviolet light emitted by the third light emitting module is thereby Ultraviolet-C light or UVC light.
  • Each wavelength band is configured to predominantly provide a different set of at least one of the following: a viricidal effect, a bactericidal effect and a promotion of vitamin-D generation effect.
  • the first wavelength band may predominantly provide a bactericidal effect
  • the second wavelength band may predominantly provide a promotion of vitamin-D generation effect
  • the third wavelength band may predominantly provide a viricidal effect.
  • the present invention exploits this recognition to provide a control system that allows a user to control the combination of effects of the ultraviolet light output by the ultraviolet light system.
  • Figure 2 illustrates a lighting system 200 comprising an ultraviolet light system 210 and a control system 220.
  • the control system is itself an embodiment of the invention.
  • the lighting system 200 may also comprise a user interface 230.
  • the combination of the control system 220 and the user interface 230 also provides an embodiment of the invention, which can be labelled a control arrangement.
  • the ultraviolet light system 210 is configured to emit ultraviolet light.
  • the ultraviolet light system 210 is configured such that the light intensity in at least two different wavelength bands are (individually) controllable.
  • Each of the at least two different wavelength bands is configured to predominantly provide a different set of at least one of the following: a viricidal effect, a bactericidal effect and a promotion of vitamin-D generation effect, as previously explained.
  • each wavelength band may predominantly provide (or be predominantly associated with) a single one of these effects.
  • the two or more wavelength bands, or particular wavelength bands may include two or more of the following wavelength bands: a first wavelength band of between lOOnm and 280nm; a second wavelength band of between 280nm to 315nm; and a third wavelength band of between 315nm and 400nm.
  • the two or more wavelength bands may include two or more of the following wavelength bands: a first wavelength band of between lOOnm and 280nm; a second wavelength band of between 280nm to 320nm; and a third wavelength band of between 320nm and 400nm. These two examples provide alternative definitions for the wavelength band of Ultraviol et-B.
  • the ultraviolet light system 210 is configured such that the light intensity for at least two different forms of ultraviolet (Ultraviolet- A, Ultraviolet-B or Ultraviol et-C) is individually controllable.
  • the ultraviolet light system may be configured to provide (individually) controllable light intensity in at least two of: a first wavelength band being a wavelength band for Ultraviolet- A, a second wavelength band being a wavelength band for Ultraviolet-B and a third wavelength band being a wavelength band for Ultraviol et-C.
  • a first wavelength band being a wavelength band for Ultraviolet- A
  • a second wavelength band being a wavelength band for Ultraviolet-B
  • a third wavelength band being a wavelength band for Ultraviol et-C.
  • the first wavelength band provides a predominantly viricidal effect
  • the second wavelength band provides a predominantly promotion of vitamin-D generation effect
  • the third wavelength band provides a predominantly bactericidal effect.
  • the ultraviolet light system 210 comprises two or more ultraviolet light modules 211, 212, 213.
  • Each ultraviolet light module is configured to output ultraviolet light in a different wavelength band.
  • the/all peak intensity/intensities of ultraviolet light emitted by any ultraviolet light module may fall within a particular wavelength band, wherein the particular wavelength band associated with each module does not spectrally overlap with a particular wavelength band associated with any other module.
  • the ultraviolet light system 210 may comprise a first ultraviolet light module 211 and a second ultraviolet light module 212.
  • the first ultraviolet light module 211 emits ultraviolet light having a peak intensity (or intensities) lying in the first wavelength band.
  • the second ultraviolet light module 212 emits ultraviolet light having a peak intensity (or intensities) lying the a second wavelength band, which does not spectrally overlap the first wavelength band.
  • the ultraviolet light system 210 may comprise a third ultraviolet light module 213 that emits ultraviolet light having a peak intensity lying in the third wavelength band.
  • the third wavelength band does not spectrally overlap the first, second and third wavelength bands.
  • the ultraviolet light system 210 may comprise more than three ultraviolet light modules. Each module may emit ultraviolet light having a peak intensity lying in a respective wavelength band, wherein the respective wavelength bands do not overlap one another.
  • Each ultraviolet light module may comprise one or more ultraviolet light emitters (e.g., ultraviolet light bulbs or other ultraviolet light sources).
  • the peak intensity of each ultraviolet light emitter falls with the wavelength band associated with the ultraviolet light module.
  • the peak intensity of different ultraviolet light emitters within a same ultraviolet light module may differ or is (preferably) identical.
  • UV light emitters Due to the non-ideal nature of light emission by ultraviolet light emitters, it will be appreciated that some of the light emitted by different ultraviolet light modules may spectrally overlap. However, the wavelength or wavelengths at which the peak intensity or intensities (i.e., any maxima) of ultraviolet light emitted by different ultraviolet light modules fall(s) into different and non-overlapping wavelength bands.
  • Suitable examples of ultraviolet light modules include ultraviolet light bulbs, ultraviolet LEDs and so on.
  • One suitable manufacturer of such ultraviolet light modules is Philips ® lighting.
  • the at least two light emitting modules may be configured such that the ultraviolet light emitted by each light emitting module spatially overlaps the ultraviolet light emitted by each other light emitting module.
  • the light emitted by any light emitting module should at least partly overlap (e.g., in spatial terms) with the light emitting by each other light emitting module. This means that, in spatially overlapped parts, light is present from a plurality of different light emitting modules.
  • the ultraviolet light system is configured such that, in each of the least two different wavelength bands (e.g., provided by of different light emitting elements), the peak intensity in said wavelength band is at a wavelength that is at least 30nm different to the wavelength for the peak intensity in each other wavelength band in the least two different wavelength bands.
  • the control system 220 is configured to control an operation of the ultraviolet light system 210.
  • the control system 220 is configured to control the light intensity of the at least two different wavelength bands of ultraviolet light that are emitted by the ultraviolet light system 210.
  • the control system comprises at least one input interface 221, at least one output interface 222 and a controller 223.
  • Information received at the input interface 221 is processed by the controller 223 to determine a light intensity for each of the at least two different wavelength bands of ultraviolet light of the ultraviolet light system. The determined intensities are then output to the ultraviolet light system via the at least one output interface 222.
  • the ultraviolet light system can then respond to the determined intensities to change the intensities of light output by the light intensity system. This can be readily performed, for instance, by individually controlling a total amount of power drawn (or available to be drawn by) by each ultraviolet light module of an ultraviolet light system comprising a plurality of such ultraviolet light modules and/or an amount of light shielding provided for each ultraviolet module.
  • the control mechanism employed by the controller 223 of the control system 220 is dependent upon a user indication received at the user interface 230, which may also form part of the lighting system 200.
  • the controller 223 of the control system 220 is configured to receive the user indication from the user interface 230 via the at least one input interface 221.
  • the user indication represents a selected one of a plurality of selectable interface elements. Suitable examples of selectable interface elements are provided later in this disclosure.
  • Each selectable interface element represents a different combination of desired effects of the ultraviolet light that the ultraviolet light system is adapted to or is able to provide.
  • the desired effects include a desired viricidal effect, a desired bactericidal effect and/or a desired promotion of vitamin-D generation effect.
  • Different combinations of the desired effects represent a different balance or desired bias towards the desired effects.
  • different combinations of the desired effect may represent a different relative bias or user-desire towards the different effects.
  • different combinations may identify a different set of percentages for the effects, where all sets of percentages sum to 100%.
  • each combination of desired effects may indicate an A% bias towards a first effect, a B% bias towards a second effect and, optionally, a C% bias towards a third effect.
  • the sum of A, B and C (if present) is equal to 100. In this way, increasing the bias towards one effect would reduce a bias towards each other effect.
  • each selectable option represents a different combination of desired effects for the light output by the ultraviolet light system.
  • each selectable option may represent different desired magnitudes or levels of a plurality of different effects, the effects being those that can be provided by different wavelength bands of ultraviolet light that the ultraviolet light system is able to provide and individually control.
  • the operation of the user interface may be controlled by the controller 223 of the control system 220, e.g., via the output interface 222.
  • the user interface comprises a display
  • the content of information presented at the display may be controlled by the controller of the control system.
  • a user is able to interact or respond (e.g., via one or input elements such as a touch-sensitive array or a mouse and keyboard) to information available (e.g., made user-perceptible using one or more output modules such as a screen or display) at the user interface.
  • the user interface may provide physical representations of the selectable options, e.g., in the form of a knob or physical slider that can be manipulated by a user or individual.
  • Selection of a selectable interface element by a user at the user interface 230 triggers the provision of a user indication of the selected interface element to the controller 223 of the control system 220 via the at least one input interface 221.
  • the controller 223 of the control system 220 determines a light intensity of each the at least two different wavelength bands of ultraviolet light of the ultraviolet light system based on the received user indication.
  • the controller 223 determines the light intensity of each of the at least two different wavelength bands to achieve a first and a second criteria.
  • the first criterion is that the light intensities of the at least two different wavelength bands of ultraviolet light align with the combination of the desired viricidal effect, the desired bactericidal effect and/or the desired promotion of vitamin-D generation effect represented by the selected interface element.
  • the effects provided by the combination of wavelengths emitted by the ultraviolet light are the same as, or otherwise align with (e.g., are proportional to), the combination of desired effects represented by the selected interface element.
  • the second criterion is that the light intensities of the at least two different wavelength bands of ultraviolet light provide a clinically safe combination of light intensities.
  • This control approach provides a mechanism for facilitating direct control of ultraviolet light for achieving clinically safe levels, and exploits the recognition that different combinations of ultraviolet light are clinically safe at different combinatorial levels.
  • the control approach also makes use of the identification that different wavelength bands of ultraviolet light have different effects.
  • a simple approach for meeting the two above-identified criteria is for the controller 223 of the control system 220 to associate each selectable interface element (whose selection is indicated via the user indicator UI received via the at least one input interface) with a different predetermined combination of light intensities in different wavelength bands, each predetermined combination being a clinically safe combination.
  • each predetermined combination of light intensities in different wavelength bands also aligns with or provides the desired combination of effects for that selectable interface element. This can be achieved because different wavelength bands have a different set of one or more predominating effects. In this way, the controller may be able to simply map a selected interface element to a particular combination of light intensities in different wavelength bands.
  • each selectable interface element may effectively represent a different (clinically safe) combination of light intensities of the at least two different wavelength bands, the combination achieving a desired combination of effects.
  • the cost function may process a potential combination of light intensities for the different wavelength bands, and penalize reduced safety and also penalize reduced alignment with the desired effects.
  • a minimization process may be performed using the cost function to determine the intensities of light for the different controllably wavelength bands of light output by the ultraviolet light system.
  • the controller 223 of the control system 220 may determine a percentage for each light intensity in each wavelength band emitted by the ultraviolet light system, which the controller is able to control via the at least one output interface 222.
  • a percentage may represent a percentage of a maximum possible light intensity output of that wavelength band.
  • the maximum possible light intensity may represent a maximum safe intensity of light for the associated wavelength band, e.g., a maximum safe intensity of light for the associated wavelength band in the absence of other ultraviolet wavelength bands.
  • the controller 223 of the control system 220 may define a particular percentage for the light intensity in a first wavelength band and a particular percentage for the light intensity in a second wavelength band.
  • each percentage may represent a percentage of the maximum safe intensity of light for the associated wavelength band.
  • a percentage of 100 may represent the maximum safe intensity of light for the associated wavelength band.
  • a percentage of 50 may represent half of the maximum safe intensity of light for the associated wavelength band.
  • the controller 223 of the control system may define an intensity of light in the first wavelength band of X% of the maximum safe intensity of light for the first wavelength band and an intensity of light in the second wavelength band of Y% of the maximum safe intensity of light for the second wavelength band.
  • each selectable interface element may be associated with an intensity of light in the first wavelength band of X% of the maximum safe intensity of light for the first wavelength band, an intensity of light in the second wavelength band of Y% of the maximum safe intensity of light for the second wavelength band, and an intensity of light in the third wavelength band of Z% of the maximum safe intensity of light for the third wavelength band.
  • the controller 223 may be configured such that the sum of the percentages is preferably equal to or less than 100, e.g. equal to 100. This approach recognizes that appropriate proportional control of the ultraviolet light intensities can ensure that the combined light would not result in the total exposure to an individual exceeding a clinically safe exposure.
  • the determined light intensity of each of at least two different wavelength bands of ultraviolet light of the ultraviolet light system is a percentage of the maximum safe intensity of light for the associated wavelength band, and a clinically safe combination of light intensities represents a combination of light intensities of which the sum of the percentages for the associated wavelength bands is less than or equal to 100.
  • the controller of the control system may control the ultraviolet light to emit light in a single wavelength band that predominantly provides this desired effect at a percentage (equal to the predetermined sum of percentages) of the maximum safe intensity of that wavelength band.
  • the controller of the control system may control the ultraviolet light to emit light in two wavelength bands, that each predominantly provide a different one of these desired effects.
  • the intensity in each wavelength band can be set to be a percentage equal to the half the predetermined sum of percentages of the maximum safe intensity of that wavelength band.
  • the sum of the percentages may be set to a value less than 100, e.g. 90 or 80.
  • Other suitable variations will be apparent to the skilled person.
  • a clinically safe intensity value may represent an intensity of UV light below which it is believed that nearly all individuals in the vicinity of the ultraviolet light system emitting such light may be repeatedly exposed without adverse health effects.
  • a “clinically safe” property indicates that the value of the property is at a level that would not result in adverse health effects in a majority (e.g., >95%) of a population.
  • a number of manufacturers of ultraviolet light systems provide clinically safe maximum intensity values for their light modules/bulbs (which could output light of different wavelengths). This information could be used to identify or otherwise define the maximum safe intensities.
  • clinically safe intensity values i.e. maximum safe intensities
  • an intensity corresponding to a particular exposure limit can be calculated based on assumptions or properties of the ultraviolet light system (e.g., light beam divergence and direction), expected position (e.g. distance and location) of individuals with respect to the ultraviolet light system and/or expected time/length of exposure.
  • ICNIRP International Commission on Non-Ionizing Radiation Protection
  • Figure 3 illustrates one set of example accepted exposure limits (EL) for ultraviolet light of different wavelengths X.
  • the exposure limits represents a total safe radiation energy received by an individual over the course of 8 hours of exposure to ultraviolet light.
  • the value of the exposure limit will, of course, differ for other lengths of exposure to ultraviolet light.
  • Figure 3 also illustrates the value of a spectral weight function (SWF) for each wavelength.
  • SWF spectral weight function
  • the value of the spectral weighting function represents an effectiveness of a particular wavelength of light in promoting or encouraging adverse effects in an individual (e.g., erythema or photokeratitis). This clearly demonstrates how some wavelengths are more influential on adverse health effects than other wavelengths.
  • Figure 3 demonstrates how controlling ultraviolet light wavelengths or wavelength bands proportionally to their maximum allowable safe intensities can ensure that an exposure limit to an individual is not breached.
  • each wavelength will have its own exposure limit, and therefore its own maximum allowable intensity.
  • the combined exposure to ultraviolet lights in different wavelength bands could cause an individual to exceed a combined exposure limit. For instance, if an individual is exposed to UV light of a first wavelength to a point that the exposure limit at the first wavelength is reached, but is simultaneously exposed to UV light of a second wavelength, then the combined exposure limit would be breached.
  • Proposed embodiments therefore propose approaches that control the intensity of light in different wavelength bands to ensure that the combined exposure limit is not breached.
  • One preferred mechanism is to control the intensity of light in different wavelength bands proportionally to the maximum allowable intensity (i.e., the intensity that would be safe if no other ultraviolet light intensities were provided). This proportion is representable as a percentage.
  • the sum of all percentages for all controllable wavelength bands is equal to or less than 100. This ensures that the combined exposure limit is not breached. For greater safety, the sum may be less than 100, e.g., less than or equal to 90, e.g., less than or equal to 80.
  • Further user indications which may be received by the controller 223 via the at least one input interface 221, may be used in the control of the intensities of the wavelength bands of ultraviolet light.
  • a second user indication may indicate a desired overall intensity or overall relative intensity (e.g., indicating a percentage of maximum allowable intensity).
  • the controller 223 of the control system 220 may be configured to control the ultraviolet light system further based on any such user indication. For instance, the control system may scale the ultraviolet intensities of the wavelength bands responsive to a second user indication indicating a desired relative intensity.
  • the second user indication may provide or indicate a scaling factor for intensities in the combination of intensities represented by the selected interface element (provided by the user indication).
  • This scaling factor may be on a predetermined scale, e.g. 0 to 1 or 0 to 100.
  • the controller 223 of the control system 220 may use the indicated scaling factor in setting or controlling the intensities of the wavelength bands.
  • Figure 4 illustrates an interactive feature 400 provided by a user interface.
  • the interactive feature may represent a physical interface or a visual display able to provide a visual representation of graphical elements, in particular, the selectable interface elements.
  • the display 400 provides a one-dimensional slider 410, in which different user-indicated positions in the one-dimensional slider represent different selectable interface elements and therefore different combinations of desired effects of the ultraviolet light emitted by the ultraviolet light system.
  • the position of a pointer 420 may be controlled by a user or individual to define which combination of desired effects is selected, i.e., different positions of the pointer represent different selectable interface elements and thereby combinations of desired effects.
  • each end 411, 412 of the one-dimensional slider represents a different effect.
  • a first end 411 of the one-dimensional slider 410 may represent a first effect and a second end 412 of the one-dimensional slider 410 may represent a second, different effect.
  • each end of the one-dimensional slider has a corresponding or associated effect.
  • a first wavelength band is a viricidal effect and a second wavelength band is a promotion of vitamin-D generation effect.
  • the controller 223 may be configured such that the closer the position of the pointer 420 to an end 411, 412 of the one-dimensional slider, the more the wavelength band associated with the effect of that end contributes to the combination of light intensities. Thus, the closer the position of the pointer 420 to an end 411, 412, the greater the intensity of light for the corresponding wavelength band that predominantly provides that effect output by the ultraviolet light system.
  • the controller of the control system receives an indicator responsive to the position of the pointer 420 along the slider, i.e., of the user indication of the selected interface element.
  • the control system then performs appropriate control of the ultraviolet light system to control the combination of light intensities to align (e.g., match) with the combination of effects represented by the selected interface element, whilst remaining a clinically safe combination of light intensities.
  • the control system controls the ultraviolet light system to only output light that predominantly provides the associated effect. For instance, if a first wavelength band predominantly provides only this effect, then the controller of the control system may control the ultraviolet light system to output light only in the first wavelength band, e.g., at a maximum safe intensity for the first wavelength band.
  • the control system controls the ultraviolet light system to only output light that predominantly provides the associated effect (e.g., the promotion of Vitamin-D generation effect). For instance, if a second wavelength band predominantly provides only this effect, then the controller of the control system may control the ultraviolet light system to output light only in the second wavelength band, e.g., at a maximum safe intensity for the first wavelength band.
  • the control system controls the ultraviolet light system to output light in the first wavelength band and the second wavelength band, e.g., at intensity equal to half the maximum safe intensity for respective band. Positions in between these two extremes can provide proportional control.
  • FIG. 5 illustrates an interactive feature 500 provided by a user interface.
  • the interactive feature 500 may represent a physical interface or a visual display able to provide a visual representation of graphical elements, in particular, the selectable interface elements.
  • the display 500 provides a two-dimensional slider 510, with different user- indicated positions in the two-dimensional slider representing different selectable interface elements and therefore different combinations of desired effects.
  • the two- dimensional slider may represent a two-dimensional solution space.
  • the position of a pointer 520 or indicator may be controlled to define which combination of desired effects is selected, i.e., different positions of the pointer represent different selectable interface elements and thereby combinations of desired effects.
  • the user may be able to simply select a position, e.g., without the use of a pointer.
  • the two-dimensional slider represents a polygonal shape, each vertex of the polygonal shape representing a different effect.
  • the effect for each vertex may be indicated using respective graphical elements 501, 502, 503.
  • the polygonal shape has three vertices (i.e., is a triangle) thereby representing three different effects. This includes a viricidal effect for a first graphical element 501, a bactericidal effect for a second graphical element 502 and/or a promotion of vitamin-D generation effect for a third graphical element 503.
  • a vertex also represents a predetermined position of the predetermined shape of the two-dimensional slider.
  • Increased proximity of the user-indicated position (e.g., the position of the pointer 520) to said vertex represents an increased desire (of the user) for the effect represented by said vertex.
  • the closer the position of the pointer 420 to a vertex 511, 512, 513 the greater the desire for that effect in the ultraviolet light output by the ultraviolet light system.
  • Figure 6 illustrates an interactive feature 600 provided by a user interface.
  • the interactive feature 600 may again represent a physical interface or a visual display able to provide a visual representation of graphical elements, in particular, the selectable interface elements.
  • the display 600 again provides a two-dimensional slider 610, with different user-indicated positions in the two-dimensional slider representing different selectable interface elements and therefore different effects of ultraviolet light output by the ultraviolet light system.
  • the two-dimensional slider may represent a two-dimensional solution space.
  • the position of a pointer 620 may be controlled by a user to define a desire for the different effects, i.e., different positions of the pointer represent different levels of desired for the different effects.
  • the user may be able to simply select a position.
  • the illustrated two-dimensional slider represents a predetermined shape (here: an annulus).
  • a predetermined shape here: an annulus.
  • Each of a plurality of predetermined positions 611, 612, 613 around the predetermined shape represents a different effect for light output by the ultraviolet light system.
  • a first predetermined position 611 represents a viricidal effect
  • a second predetermined position 612 represents a bactericidal effect
  • a third predetermined position 613 represents a promotion of vitamin-D generation effect.
  • Each predetermined position may be indicated using respective graphical elements 601, 602, 603.
  • Increased proximity of the user-indicated position, e.g. the position of the pointer 620, to said predetermined position represents an increased desire for the effect represented by said predetermined position in the light output by the ultraviolet light system.
  • the predetermined shape is an annulus.
  • suitable predetermined shapes would be readily apparent to the skilled person, e.g. a circle or oval.
  • the interactive feature 600 can be considered to be a generalized version of the interactive feature 500 described with reference to Figure 5.
  • the vertices of the interactive feature 500 represent predetermined positions of a more general interactive feature.
  • the control system receives an indicator responsive to the position of the pointer along the slider, i.e., of the user indication of the selected interface element.
  • the control system then performs appropriate control of the ultraviolet light system to control the combination of light intensities to align (e.g., match) with the combination.
  • buttons that can be selected (e.g., physically pressed or virtually indicated) by a user.
  • Each button may be a different selectable interface element thereby representing a different combination of desired effects for the ultraviolet light output or emitted by the ultraviolet light system.
  • each selectable interface element can be associated with a particular combination of light intensities for the ultraviolet light output by the ultraviolet light system.
  • the combination of light intensities is a clinically safe combination.
  • a control system for controlling the operation of an ultraviolet light system configured to emit ultraviolet light, the ultraviolet light system being configured such that the light intensities of at least two different wavelength bands of ultraviolet light emitted by the ultraviolet light system are controllable by the control system.
  • Such a control system is configured to: receive, from a user interface, a user indication of a selected one of a plurality of selectable interface elements, wherein each selectable interface element represents a different combination of light intensities and each combination of light intensities represents a clinically safe combination of light intensities of the at least two different wavelength bands; and control the ultraviolet light system such that the light intensities of the at least two different wavelength bands of ultraviolet light align with the combination of light intensities represented by the selected one of the plurality of selectable interface elements.
  • Such embodiments are based on the realization that a restricted set of combinations of light intensities can ensure clinically safe emission of ultraviolet light, whilst still providing desired effect.
  • a disinfection lighting system comprising: a UV (ultraviolet) light lighting device providing UV device light and comprising: a first UV light source providing a first UV light having a first dominant peak wavelength in a wavelength range from 315 to 380 nm; a second UV light source providing a second UV light having a dominant peak wavelength in a wavelength range from 280 to 315 nm; a third UV light source providing a third UV light having a third dominant peak wavelength in a wavelength range from 100 to 280 nm; a controller arranged for controlling a first intensity II of said first UV light emitted by said first UV light source, a second intensity 12 of said second UV light emitted by said second UV light source and a third intensity 13 of said third UV light emitted by said third UV light source to therbey control the UV device light; and a user interface configured to receive a user indication of a selected one of a plurality of selectable interface elements, wherein each selectable interface element represents a different combination of the first
  • the controller is configured to control the UV lighting system such that, for the UV device light, the first intensity of said first UV light, second intensity of said second UV light and third intensity of said third UV light together provide a clinically safe combination of light intensities and align or match with the combination represented by the seleced one of the plurality of selectable interface elements.
  • the controller is arranged to control the intensities of the UV device light such that a first ratio R1 between said second intensity of said second UV light and said first intensity of said first UV light, a second ratio R2 between said second intensity of said second UV light and said third intensity of said third UV light, and a third ratio R3 between said first intensity of said first UV light and said third intensity of said third UV light depends on the selected one of the plurality of selectable interface elements.
  • Il increases with decreasing R1 and/or increasing R3; 12 increases with increasing R1 and/or increasing R2; and 13 increases with decreasing R2 and/or decreasing R3.
  • the plurality of selectable interface elements comprises a first selectable interface element, a second selectable interface element, and a third selectable interface element.
  • the first selectable interface element may represent a combination of the first intensity, the second intensity and the third intensity wherein at least 90% of the UV device light is first UV light;
  • the second selectable interface element may represent a combination of the first intensity, the second intensity and the third intensity wherein at least 90% of the UV device light is second UV light;
  • the third selectable interface element may represent a combination of the first intensity, the second intensity and the third intensity wherein at least 90% of the UV device light is third UV light.
  • the plurality of selectable interface elements may further comprise a fourth selectable interface element representing a combination of the first intensity, the second intensity and the third intensity wherein 30-40% of the UV device light is first UV light, 30- 40% of the UV device light is second UV light and 30-40% of the UV device light is third UV light.
  • the plurality of selectable interface elements further comprises a fifth selectable interface element.
  • the fifth selectable interface element may represent a combination of the first intensity, the second intensity and the third intensity wherein at least 60% of the UV device light is first UV light and at least 10% of the UV device light is second UV light and at least 10% of the UV device light is third UV light.
  • the plurality of selectable interface elements further comprises a sixth selectable interface element.
  • the sixth selectable interface element may represent a combination of the first intensity, the second intensity and the third intensity wherein at least 60% of the UV device light is second UV light and at least 10% of the UV device light is first UV light and at least 10% of the UV device light is third UV light.
  • the plurality of selectable interface elements further comprises a seventh selectable interface element.
  • the seventh selectable interface element may represent a combination of the first intensity, the second intensity and the third intensity wherein at least 60% of the UV device light is third UV light and at least 10% of the UV device light is first UV light and at least 10% of the UV device light is second UV light.
  • the first UV light source, the second UV light source and the third UV light source may be solid state light sources.
  • the first UV light is provided in a first beam
  • the second UV light is provided in a second beam
  • the third UV light is provided in a third beam; wherein the first UV light beam, the second UV light beam and the third light beam form an exposure overlap at the target area.
  • FIG 7 schematically illustrates a control system 700 for use in an embodiment.
  • the control system may act as the control system used in the lighting system 200 illustrated in Figure 1.
  • the control system may be configured to receive, from a user interface, a user indication of a selected one of a plurality of selectable interface elements, wherein each selectable interface element represents a different combination of light intensities and each combination of light intensities represents a clinically safe combination of light intensities of the at least two different wavelength bands; and control the ultraviolet light system such that the light intensities of the at least two different wavelength bands of ultraviolet light align with the combination of light intensities represented by the selected one of the plurality of selectable interface elements.
  • control system can run on a single computer or may be distributed over several computers and locations (e.g. connected via internet).
  • the control system 700 includes, but is not limited to, PCs, workstations, laptops, PDAs, palm devices, servers, storages, and the like.
  • the control system 700 may include one or more processors 701, memory 702, and one or more I/O interfaces 707 that are communicatively coupled via a local interface (not shown).
  • the local interface can be, for example but not limited to, one or more buses or other wired or wireless connections, as is known in the art.
  • the local interface may have additional elements, such as controllers, buffers (caches), drivers, repeaters, and receivers, to enable communications. Further, the local interface may include address, control, and/or data connections to enable appropriate communications among the aforementioned components.
  • the one or more processors act as the controller.
  • the one or more I/O interfaces comprises at least one input interface and at least one output interface.
  • the processor 701 is a hardware device for executing software that can be stored in the memory 702.
  • the processor 701 can be virtually any custom made or commercially available processor, a central processing unit (CPU), a digital signal processor (DSP), or an auxiliary processor among several processors associated with the control system 700, and the processor 701 may be a semiconductor based microprocessor (in the form of a microchip) or a microprocessor.
  • the memory 702 can include any one or combination of volatile memory elements (e.g., random access memory (RAM), such as dynamic random access memory (DRAM), static random access memory (SRAM), etc.) and non-volatile memory elements (e.g., ROM, erasable programmable read only memory (EPROM), electronically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), tape, compact disc read only memory (CD-ROM), disk, diskette, cartridge, cassette or the like, etc.).
  • RAM random access memory
  • DRAM dynamic random access memory
  • SRAM static random access memory
  • non-volatile memory elements e.g., ROM, erasable programmable read only memory (EPROM), electronically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), tape, compact disc read only memory (CD-ROM), disk, diskette, cartridge, cassette or the like, etc.
  • the memory 702 may incorporate electronic, magnetic, optical, and/or other types
  • the software in the memory 702 may include one or more separate programs, each of which comprises an ordered listing of executable instructions for implementing logical functions.
  • the software in the memory 702 includes a suitable operating system (O/S) 705, compiler 704, source code 703, and one or more applications 706 in accordance with exemplary embodiments.
  • the application 706 comprises numerous functional components for implementing the features and operations of the exemplary embodiments.
  • the application 706 of the control system 700 may represent various applications, computational units, logic, functional units, processes, operations, virtual entities, and/or modules in accordance with exemplary embodiments, but the application 706 is not meant to be a limitation.
  • the operating system 705 controls the execution of other computer programs, and provides scheduling, input-output control, file and data management, memory management, and communication control and related services. It is contemplated by the inventors that the application 706 for implementing exemplary embodiments may be applicable on all commercially available operating systems.
  • Application 706 may be a source program, executable program (object code), script, or any other entity comprising a set of instructions to be performed.
  • a source program then the program is usually translated via a compiler (such as the compiler 704), assembler, interpreter, or the like, which may or may not be included within the memory 702, so as to operate properly in connection with the O/S 705.
  • the application 706 can be written as an object oriented programming language, which has classes of data and methods, or a procedure programming language, which has routines, subroutines, and/or functions, for example but not limited to, C, C++, C#, Pascal, BASIC, API calls, HTML, XHTML, XML, ASP scripts, JavaScript, FORTRAN, COBOL, Perl, Java, ADA, NET, and the like.
  • the I/O interface 707 is configured to communicate with a user interface 750, e.g., which provides the indication of a selected one of a plurality of selectable interface elements.
  • the user interface 750 may include input devices such as, for example but not limited to, a mouse, keyboard, scanner, microphone, camera, etc. Furthermore, the user interface 750 may also include output devices, for example but not limited to a printer, display, etc. Finally, the user interface 750 may further include devices that communicate both inputs and outputs, for instance but not limited to, a NIC or modulator/demodulator (for accessing remote devices, other files, devices, systems, or a network), a radio frequency (RF) or other transceiver, a telephonic interface, a bridge, a router, etc.
  • a NIC or modulator/demodulator for accessing remote devices, other files, devices, systems, or a network
  • RF radio frequency
  • the I/O interface 707 may also include components for communicating over various networks, such as the Internet or intranet.
  • the software in the memory 702 may further include a basic input output system (BIOS) (omitted for simplicity).
  • BIOS is a set of essential software routines that initialize and test hardware at startup, start the O/S 705, and support the transfer of data among the hardware devices.
  • the BIOS is stored in some type of read-only-memory, such as ROM, PROM, EPROM, EEPROM or the like, so that the BIOS can be executed when the control system 700 is activated.
  • the processor 701 When the control system 700 is in operation, the processor 701 is configured to execute software stored within the memory 702, to communicate data to and from the memory 702, and to generally control operations of the control system 700 pursuant to the software.
  • the application 706 and the O/S 705 are read, in whole or in part, by the processor 701, perhaps buffered within the processor 701, and then executed.
  • a computer readable medium may be an electronic, magnetic, optical, or other physical device or means that can contain or store a computer program for use by or in connection with a computer related system or method.
  • the application 706 can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
  • a "computer-readable medium" can be any means that can store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
  • the computer readable medium can be, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, device, or propagation medium.
  • Figure 8 illustrates a computer-implemented method 800 according to an embodiment.
  • the method 800 may be performed by any herein described control system.
  • the method 800 is for controlling the operation of an ultraviolet light system configured to emit ultraviolet light, the ultraviolet light system being configured such that the light intensities of at least two different wavelength bands of ultraviolet light emitted by the ultraviolet light system are controllable.
  • the method comprises a step 810 of receiving from a user interface, a user indication of a selected one of a plurality of selectable interface elements, wherein each selectable interface element represents a different combination of desired effects of ultraviolet light that the ultraviolet light system is adapted to provide, the desired effects including a desired viricidal effect, a desired bactericidal effect and/or a desired promotion of vitamin-D generation effect.
  • the method 800 also comprises a step 820 of determining a light intensity of each the at least two different wavelength bands of ultraviolet light of the ultraviolet light system based on the received user indication, such that the light intensities of the at least two different wavelength bands of ultraviolet light (i) align with the combination of the desired effects represented by the selected interface element, and (ii) provide a clinically safe combination of light intensities.
  • the method 800 also comprises a step 830 of outputting the determined light intensities to the ultraviolet light system.
  • the present invention may be a system, a method, and/or a computer program product.
  • the computer program product may include a computer readable storage medium (or media) having computer readable program instructions thereon for causing a processor to carry out aspects of the present invention.
  • These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
  • These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, a programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable storage medium having instructions stored therein comprises an article of manufacture including instructions which implement aspects of the function/act specified in the flowchart and/or block diagram block or blocks.
  • the computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other device to produce a computer implemented process, such that the instructions which execute on the computer, other programmable apparatus, or other device implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s).
  • the functions noted in the block may occur out of the order noted in the figures.
  • two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
  • a computer program may be stored/distributed on a suitable medium, such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems.
  • a suitable medium such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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Abstract

L'invention concerne un mécanisme de commande d'un système de lumière ultraviolette. Le système de lumière ultraviolette est conçu pour émettre une lumière ultraviolette. L'intensité lumineuse dans au moins deux bandes de longueur d'onde de la lumière ultraviolette peut être commandée individuellement par un système de commande. Le système de commande commande ou règle l'intensité lumineuse dans les au moins deux bandes de longueur d'onde en réponse à une indication d'utilisateur au niveau d'une interface utilisateur. L'indication d'utilisateur identifie un élément interactif sélectionné au niveau de l'interface utilisateur. Différents éléments interactifs représentent différents effets souhaités de la lumière ultraviolette devant être émise par le système de lumière ultraviolette.
PCT/EP2023/069143 2022-07-18 2023-07-11 Commande d'un système de lumière ultraviolette WO2024017704A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200267814A1 (en) 2019-02-19 2020-08-20 Seoul Semiconductor Co., Ltd. Led lighting apparatus and lighting system having the same
US20210113724A1 (en) * 2017-01-12 2021-04-22 UD Innovations, LLC Fixed position hybrid germicidal irradiation apparatus, method, and system
US20210369891A1 (en) 2020-05-29 2021-12-02 Ecolab Usa Inc. Microbial decontamination of common touch articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210113724A1 (en) * 2017-01-12 2021-04-22 UD Innovations, LLC Fixed position hybrid germicidal irradiation apparatus, method, and system
US20200267814A1 (en) 2019-02-19 2020-08-20 Seoul Semiconductor Co., Ltd. Led lighting apparatus and lighting system having the same
US20210369891A1 (en) 2020-05-29 2021-12-02 Ecolab Usa Inc. Microbial decontamination of common touch articles

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