WO2022152553A1 - Agencement d'éclairage pour illumination et éclairage de désinfection - Google Patents

Agencement d'éclairage pour illumination et éclairage de désinfection Download PDF

Info

Publication number
WO2022152553A1
WO2022152553A1 PCT/EP2021/087653 EP2021087653W WO2022152553A1 WO 2022152553 A1 WO2022152553 A1 WO 2022152553A1 EP 2021087653 W EP2021087653 W EP 2021087653W WO 2022152553 A1 WO2022152553 A1 WO 2022152553A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
solid state
exit window
lighting arrangement
light source
Prior art date
Application number
PCT/EP2021/087653
Other languages
English (en)
Inventor
Ties Van Bommel
Original Assignee
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 WO2022152553A1 publication Critical patent/WO2022152553A1/fr

Links

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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0064—Health, life-saving or fire-fighting equipment
    • 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
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/25—Rooms in buildings, passenger compartments
    • 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
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/12—Lighting means
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F21Y2105/18—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like

Definitions

  • the present invention generally relates to lighting arrangements. More specifically, the lighting arrangement is arranged to provide a combination of a desired illumination and a disinfection (bactericidal) lighting effect.
  • UV-C light with wavelengths between 200 and 230 nm can provide a germicidal effect by deactivating viruses and killing germs.
  • UV light with a wavelength between 200 and 230 nm has a low penetration depth in skin and eye tissue, thus preventing the light from harming people.
  • a lighting arrangement comprising at least one first solid state light source arranged to emit visible light in a wavelength range of 430 to 800 nm, and a lighting device comprising at least one second solid state light source arranged to emit violet light in a wavelength range of 400 to 430 nm.
  • the lighting arrangement further comprises a reflector comprising at least one lightreflecting surface, wherein the reflector at least partially encloses the at least one first solid state light source and the lighting device.
  • the reflector defines a mixing chamber for mixing at least part of the visible light emitted from the at least one first solid state light source.
  • the lighting arrangement further comprises a light exit window, wherein the visible light mixed by the mixing chamber and the violet light emitted from the at least one second solid state light source are arranged to exit the lighting arrangement through the light exit window.
  • the lighting device is configured to project the violet light emitted from the at least one second solid state light source a portion of the light exit window such that an observer viewing the portion of the light exit window perceives the violet light.
  • the present invention is based on the idea of providing a combination of illumination and disinfection lighting by a lighting arrangement which is configured to separately emit visible light for illumination purposes and violet light for disinfection purposes.
  • the lighting arrangement may hereby meet requirements and/or desires of illumination whilst at the same time providing lighting with disinfectional or bactericidal effect.
  • the present invention is advantageous in that the lighting arrangement, via its mixing chamber defined by the reflector, is able to achieve a very high degree of mixing of the visible light before exiting through the light exit window. More specifically, the light- reflective surface(s) of the reflector ensure that almost all of the visible light emitted towards the light-reflective surfaces will be reflected and eventually be coupled out from the light exit window.
  • the present invention is further advantageous in that the lighting arrangement, via its lighting device arranged to emit the violet light, is arranged to project the violet light on a portion of the light exit window, such that the emission of violet light from the lighting arrangement may be provided according to a required and/or desired emission.
  • the lighting arrangement may be arranged to direct the violet light to specific areas, e.g. in a room, where a disinfection effect is particularly desirable or required.
  • the present invention is further advantageous in that the violet light may be clearly visible by an observer in the portion of the visible light emitted by the lighting arrangement. Hence, an observer viewing the portion of the light exit window may perceive the violet light.
  • the present invention is further advantageous in that the ability of the lighting arrangement to project the violet light on a portion of the light exit window achieves an aesthetically attractive lighting arrangement upon operation.
  • the lighting arrangement may project the violet light on portion(s) of the light exit window such that an observer may perceive a pattern, structure or formation of the violet light emitted from the lighting arrangement.
  • the present invention is further advantageous in that the lighting arrangement of the present invention comprises relatively few components.
  • the low number of components is advantageous in that the lighting arrangement is relatively inexpensive to fabricate.
  • the low number of components of the lighting arrangement implies an easier recycling, especially compared to devices or arrangements comprising a relatively high number of components which impede an easy disassembling and/or recycling operation.
  • the lighting arrangement comprises at least one first solid state light source.
  • solid state light source SSL source
  • the solid state light source may comprise light-emitting diodes, LEDs, organic light-emitting diodes, OLEDs, polymer light-emitting diodes, PLEDs, laser diodes, superluminescent diodes, etc., as sources of illumination.
  • the first solid state light source is arranged to emit visible light.
  • visible light it is here meant light within a wavelength range of 430 to 800 nm which can be perceived by the human eye and the light may have wavelengths in the complete range of 430 - 800 nm or only a part thereof.
  • the lighting arrangement further comprises a lighting device.
  • lighting device substantially any device, unit, element, or the like, which comprises one or more light sources.
  • the lighting device according to the present invention comprises at least one second solid state light source arranged to emit violet light in a wavelength range of 400 to 430 nm and the light may have wavelengths in the complete range of 400 - 430 nm or only a part thereof.
  • violet light it is here meant light at the higher end of the visible spectrum, within a wavelength range of 380 to 450 nm, whereby within a wavelength range of 400 to 430 nm constitutes a sub-range of this wavelength range of 380 - 450 nm.
  • the lighting arrangement further comprises a reflector comprising at least one light-reflecting surface.
  • a reflector substantially any element, structure, device, or the like, which is configured to reflect incident light.
  • the reflector at least partially encloses the at least one first solid state light source and the lighting device.
  • the first solid state light source(s) and the lighting device are partially surrounded by the reflector such that the reflector is arranged to reflect the incoming light from the first solid state light source and the second solid state light source of the lighting device during operation.
  • the reflector defines a mixing chamber for mixing at least part of the visible light emitted from the at least one first solid state light source.
  • the reflector via the light-reflecting surface(s) of the reflector, the reflector is able to mix the light emitted from the first solid state light source(s) within the mixing chamber.
  • the visible light may preferably not be (directly) concentrated onto the light exit window.
  • the lighting arrangement further comprises a light exit window.
  • a light exit window it is here meant a material (e.g. glass) through which light may exit.
  • the visible light mixed by the mixing chamber and the violet light emitted from the at least one second solid state light source are arranged to exit the lighting arrangement through the light exit window.
  • the exit window is arranged to couple out the light.
  • the lighting device is configured to project the violet light emitted from the at least one second solid state light source on a portion of the light exit window.
  • project it is here meant that the lighting device is configured to direct or project the light directly on a portion of the light exit window.
  • the exit window is hereby also arranged to couple out the violet light.
  • the lighting device is configured to project the violet light emitted from the at least one second solid state light source on the portion of the light exit window such that an observer viewing the portion of the light exit window perceives the violet light.
  • the violet light may be visible or perceivable by an observer in a direct view of the light exit window.
  • the violet light may be less visible by an observer in the other areas of the light exit window, i.e. the areas except the portion of the light exit window.
  • the light exit window may be partially reflective for (all wavelengths of) the visible light.
  • the present embodiment is advantageous in that the effect of the light exit window being semi-reflective (partially reflective) is that some of the light incident on the light exit window will be reflected back into the mixing chamber. Consequently, the light will be further reflected by the one or more light-reflecting surfaces of the reflector before being coupled out from the light exit window, leading to an even more improved light mixing within the mixing chamber.
  • the light exit window may be a diffuser which has a reflectivity in the range of 30 % to 80 % for (all wavelengths of) the visible light.
  • diffuser it is here meant substantially any element, material, etc., which is arranged to diffuse the light incident thereon.
  • the light exit window in the form of a diffuser has a reflectivity in the range of 30 % to 80 % for the visible light, it is partially reflective, i.e. semi-reflective.
  • the light exit window according to the embodiment is advantageous in in that some of the light incident on the light exit window will be reflected back into the mixing chamber, leading to an even more improved light mixing within the mixing chamber before the visible light exits the lighting arrangement.
  • the light exit window may have an area, A, and wherein the portion of the light exit window constitutes a sub-area, B, of the area, A, wherein B ⁇ 0.2- A, preferably B ⁇ 0.1- A, more preferably B ⁇ 0.05- A and most preferred B ⁇ 0.03 -A, is fulfilled.
  • the lighting device may be configured to project the violet light emitted from the second solid state light source(s) on the portion of the light exit window having a sub-area, B, which is much less than the entire area, A, of the light-exit window.
  • the lighting device is configured to project the violet light emitted from the at least one second solid state light source on the portion of sub-area, B, of the light exit window, it should be noted that a (relatively small) portion of the violet light (still) may impinge on the area, A, of the light-exit window.
  • the present embodiment is advantageous in that the visible light for illumination purposes may constitute a major part of the light emission from the lighting arrangement, whereas the violet light, constituting a minor part of the light emission from the lighting arrangement, may be directed to impinge upon specific areas, e.g. in a room, where a disinfection effect is particularly desirable or required.
  • the present invention is further advantageous in that the pattern, structure or formation defined by the portion or sub-area, B, for the emission of the violet light from the lighting arrangement may be perceived as particularly attractive by an observer.
  • the at least one first solid state light source and the lighting device may be arranged at a base portion of the reflector, wherein the base portion is arranged opposite the light exit window.
  • the present embodiment is advantageous in that this position of the first solid state light source(s) may result in an even higher degree of mixing of the visible light within the mixing chamber before the visible light exits through the light exit window.
  • the lighting device may comprise at least one optical component arranged to direct the violet light emitted from the at least one second solid state light source onto the light exit window.
  • optical component it is here meant substantially any component, element, or the like, which is configured or arranged to influence, guide and/or affect light.
  • the optical component(s) of the present embodiment is (are) arranged to direct and/or project the violet light onto the light exit window.
  • the present embodiment is advantageous in that the optical component s) is (are) able to direct a major portion, or even all, of the violet light emitted from the second solid state light source(s) onto the light exit window, thereby increasing the efficiency of the bactericidal lighting of the lighting arrangement.
  • the at least one optical component may comprise a collimator arranged to collimate the violet light emitted from the at least one second solid state light source.
  • collimator it is here meant substantially any element, device or unit which is configured or arranged to collimate (narrow) light beams in a specific direction.
  • the present embodiment is advantageous in that one or more properties of the violet light exiting the lighting arrangement may be even further improved.
  • the at least one optical component may comprise a light guide arranged to guide the violet light emitted from the at least one second solid state light source towards the light exit window.
  • the present embodiment is advantageous in that the guiding of the violet light towards the light exit window is improved, leading to an even further ameliorated emission of violet light from the lighting arrangement.
  • the light guide may comprise an optical fiber comprising a core and a cladding arranged around the core, wherein the core has a first index of refraction, Ri, and the cladding has a second index of refraction, R2, wherein Ri > R2.
  • the optical fiber of the present embodiment may guide the violet light emitted from the second solid state light source(s) towards the light exit window of the lighting arrangement.
  • the light guide may have an oblong shape and may elongate in a direction, C, from the base portion towards the light exit window.
  • the light guide may, for example, have the shape of a rod, or the like.
  • the light guide may be configured to guide the violet light emitted from the second solid state light source(s), from the lighting device arranged at the base portion, towards the light exit window.
  • the present embodiment is advantageous in that the guiding of the violet light towards the light exit window may be even further improved, which in turn may lead to an even further ameliorated emission of violet light from the lighting arrangement.
  • the at least one optical component and the light exit window may be unitary.
  • unitary it is here meant either that the optical component(s) and the light exit window may constitute a single piece, i.e. a monolithic piece, element, material or component, or that the optical component(s) and the light exit window are (have been) attached or fastened to each other.
  • the at least one optical component may have a disc shape.
  • disc shape it is here meant a substantially flat shape, which furthermore may be e.g. round, oval, star-shaped, etc.
  • the at least one second solid state light source may be arranged to emit violet light in a wavelength range of 400 to 410 nm.
  • the at least one second solid state light source may be arranged to emit violet light having a wavelength of 405 nm +/-3 nm.
  • the lighting arrangement may further comprise at least one third solid state light source arranged to emit ultra violet, UV, light in a wavelength range of 100-400 nm.
  • the at least one second solid state light source may be a laser diode or a superluminescent diode.
  • a luminaire comprising a lighting arrangement according to any one of the preceding embodiments.
  • the luminaire further comprises an electrical connection connected to the lighting arrangement for a supply of power to the at least one first solid state light source and the at least one second solid state light source of the lighting arrangement.
  • Fig. 1 schematically shows a lighting arrangement according to an exemplifying embodiment of the present invention
  • FIG. 2 and 3 schematically show cross-sections of a lighting arrangement according to exemplifying embodiments of the present invention
  • Figs. 4a-4f schematically show cross-sections of a lighting arrangement comprising optical components according to exemplifying embodiments of the present invention.
  • Figs. 5a-5d schematically show luminaires comprising a lighting arrangement according to exemplifying embodiments of the present invention.
  • Fig. 1 schematically shows a lighting arrangement 100 according to an exemplifying embodiment of the present invention.
  • the lighting arrangement 100 comprises a plurality of first solid state light sources 110, which, for example, may comprise one or more light-emitting diodes, LEDs.
  • the first solid state light sources 110 are arranged to emit visible light in a wavelength range of 430 to 800 nm.
  • the visible light may be white light.
  • the white light may have a color temperature, CT, in the range from 2000 to 6000 K.
  • the white light may have a color rendering index, CRI, of at least 80.
  • the CRI R9 of the white light may be > 0.
  • the white light may have a color point within 15 SDCM, like especially within 10 SDCM, like within 7 SDCM, from the black body locus, BBL.
  • the first solid state light sources 110 may be one or more white solid state light sources such as one or more white LEDs.
  • first solid state light sources 110 are shown, but it should be noted that the lighting arrangement 100 may comprise a single first solid state light source 110. Furthermore, the positioning of the first solid state light source(s) 110 in the lighting arrangement 100 may be different than that shown.
  • the lighting arrangement 100 further comprises a lighting device 120.
  • the lighting device 120 comprises a second solid state light source 130 arranged to emit violet light in a wavelength range of 400 to 430 nm.
  • the peak maximum of the violet light may be in this wavelength range of 400 to 430 nm.
  • the lighting device 120 only comprises a single second solid state light source 130, but it should be noted that the lighting device 120 of the lighting arrangement 100 may comprise an arbitrary number of second solid state light sources 130.
  • the second solid state light source 130 may, for example, be a LED, a laser diode or a superluminescent diode.
  • the lighting arrangement 100 further comprises a reflector 140 which partially encloses the first solid state light source 110 and the lighting device 120.
  • the first solid state light source 110 and the lighting device 120 are arranged at a base portion 210 of the reflector 140.
  • the reflector 140 further comprises one or more light-reflecting surfaces 145.
  • the light-reflecting surface 145 is defined as a circumferential side wall, which, according to this example, has a circular cross-section taken in a plane parallel with the base portion 120.
  • the base portion 210 and the reflecting surface 125 of the reflector 140 define a cylinder shape of the reflector 140.
  • the lighting arrangement 100 further comprises a light exit window 160 arranged opposite the base portion 210 of the reflector 140.
  • the light exit window 160 is merely indicated by a dashed line showing its outer contour for reasons of visibility of (other) parts and components of the lighting arrangement 100.
  • the light exit window 160 may, for example, be a plate or a disk.
  • the visible light emitted from the first solid state light source 110 is arranged to be mixed in a mixing chamber 150 defined by the reflector 140 and arranged to exit the lighting arrangement 100 through the light exit window 160.
  • the violet light emitted from the second solid state light source 130 is also arranged to exit the lighting arrangement 100 through the light exit window 160, wherein the lighting device 120 is configured to project the violet light emitted from the second solid state light source 130 on a portion of the light exit window 160.
  • the mixing chamber 150 as defined by the reflector 140 of the lighting arrangement 100 as exemplified in Fig. 1 has a width, W, and a height, H.
  • the height, H, of the mixing chamber 150 is defined as the height of the light-reflective surface 145 in the form of a circumferential side wall. This height, H, of the mixing chamber 150 for the embodiment shown in Fig. 1 may also be interpreted as the distance between the base portion 210 and the light exit window 160.
  • the width, W, of the mixing chamber 150 is defined as having a base surface extension being the smallest distance between two opposite points on the periphery of the surface of the base portion 210. In the embodiment shown in Fig. 1, the width, W, of the mixing chamber 150 is the diameter of the base portion 120.
  • An aspect ratio of the width, W, and the height, H, of the mixing chamber 150 within the range of 1 to 8 may increase the light mixing of the reflector 140 while the efficiency of the lighting arrangement 100 is not lowered beyond what is acceptable.
  • Tests have been performed evaluating the efficiency and the uniformity of light coupled out from the lighting arrangement 100 depending on the aspect ratio. These tests have been performed with a mixing chamber 150 with a width, W, (i.e. diameter) of 150 mm, wherein the reflectivity of the light exit window 160 is kept at 50 %, and wherein the height, H, of the mixing chamber 150 is varied between 10 mm and 50 mm.
  • the first solid state light source 110 has been placed adjacent to the base portion 120.
  • the tests show that the contrast, which is the ratio of the highest intensity and the lowest intensity of the light emitted from the lighting arrangement 100 is rapidly decreasing from 18 to 2 when the height, H, is increased from 10 mm to 20 mm (i.e. the aspect ratio is decreased from 15 to 7.5).
  • the contrast is decreased from 2.0 to 1.7.
  • the tests show that the efficiency decreases more or less linearly from 96.0 % to 94.5 % when the height, H, is increased from 15 mm to 50 mm.
  • the base portion 120 has a highly reflective inner surface, i.e. in the range of 90 % to 100 % for the visible light emitted by the first solid state light source 110. Moreover, the absorbance of the base portion 120 is close to zero for light emitted from the first solid state light source 110. It will be appreciated that an absorbance close to zero results in a high efficiency of the lighting arrangement 100.
  • the base portion 120 may be made of metal or glass.
  • the base portion 120 may for example be covered by a sheet of reflecting material or be painted with a coating reflector.
  • the sheet of reflecting material may be a MCPET foil.
  • the coating reflector may, for example, be TiCh powder particles mixed with clear silicone. Instead of TiCh powder, AI2O3 and/or BaSCU powder may be used and mixed with clear silicone.
  • the light-reflecting surface 145 has a highly reflective inner surface, i.e. in the range of 90 % to 100 % for the visible light emitted by the first solid state light source. Moreover, the absorbance of the light-reflecting surface 145 is close to zero for light emitted from the first solid state light source 110. It will be appreciated that an absorbance close to zero results in a high efficiency of the lighting arrangement 100.
  • the light-reflecting surface 145 may be covered by a sheet of reflecting material or may be painted with a coating reflector in the same way as the inner surface of the base portion 120.
  • the base portion 120 and the light-reflecting surface 145 may be manufactured to be as white as possible, which may minimize light absorption in the mixing chamber 150.
  • the light exit window 160 of the lighting arrangement 100 is semi-reflective. More specifically, the reflectivity of the light exit window 160 is in the range of 30 % to 80 % for light emitted from the first solid state light source 110.
  • the absorbance of the light exit window 160 is preferably less than 2 % for light emitted from the first solid state light source 110. By having such a low absorbance in the light exit window 160 results in a high efficiency of the lighting arrangement 100.
  • the light exit window 160 may be made of Makrofol®. However, other material such as Lexan®, MB-grades, Lexalite Lumieo® and Flexi-LumeTM may also be used. It is also possible to use layers of scattering particles such as TiO x or A1O X in polymers such as silicone rubbers and adjust the reflectivity by the concentration of the particles and/or the thickness of the layer.
  • the light exit window 160 may further comprise luminescent material.
  • the luminescent material may convert at least a part of light of a first color which impinges on the luminescent material of the light exit window 160 into light of a second color.
  • the first solid state light source(s) 110 of the lighting arrangement is (are) arranged to emit visible light in a wavelength range of 430 to 800 nm.
  • the one or more first solid state light sources 110 may be arranged to emit white light.
  • one or more first solid state light sources 110 may be arranged to emit light of a specific color.
  • at least one of the first solid state light sources 110 may be arranged to emit red light
  • at least one of the first solid state light sources 110 may be arranged to emit green light
  • at least one of first solid state light sources 110 may be arranged to emit blue light.
  • the light emitted from these first solid state light sources 110 will thereafter mix inside the mixing chamber 150 producing visible light in a wavelength range of 430 to 800 nm.
  • the one or more first solid state light sources 110 may be arranged to emit blue light.
  • the light exit window 160 preferably comprises luminescent material converting a part of the blue light impinging on the luminescent material into light of another color.
  • the light emitted from the more first solid state light sources 110 is arranged to exit the lighting arrangement through the light exit window 160 and may be perceived by an observer as white light.
  • Fig. 2 schematically shows a cross-section of a lighting arrangement 100 according to an exemplifying embodiment of the present invention. It should be noted that the lighting arrangement 100 exemplified in Fig. 2 may constitute the lighting arrangement 100 exemplified in Fig. 1, and that it is referred to Fig.
  • the lighting arrangement 100 comprises at least one first solid state light source 110 which is arranged to emit visible light in a wavelength range of 430 to 800 nm.
  • the lighting arrangement 100 further comprises a lighting device 120 comprising at least one second solid state light source 130 arranged to emit violet light in a wavelength range of 400 to 430 nm.
  • the first and second solid state light sources 110, 130 are shown as single light sources, respectively, it will be appreciated that the number of first and second solid state light sources 110, 130 may be arbitrary.
  • the lighting device 120 comprises an optical component 300.
  • the optical component 300 which is arranged to direct the violet light emitted from the at least one second solid state light source 130, is exemplified in Fig. 2 as having the shape of a funnel or lamp shade, but it should be noted that other forms of the optical component 300 may be possible.
  • the lighting arrangement 100 in Fig. 2 further comprises a reflector 140 comprising at least one light-reflecting surface, as previously described in relation to Fig. 1.
  • the reflector 140 at least partially encloses the at least one first solid state light source 110 and the lighting device 120.
  • the reflector 140 defines a mixing chamber 150 for mixing at least part of the visible light emitted from the at least one first solid state light source 110.
  • the lighting arrangement 100 in Fig. 2 further comprises a light exit window 160.
  • the visible light mixed by the mixing chamber 150 and the violet light emitted from the at least one second solid state light source 130 are arranged to exit the lighting arrangement 100 through the light exit window 160.
  • the lighting device 120 is configured to project the violet light emitted from the at least one second solid state light source 130 on a portion of the light exit window 160.
  • Fig. 3 schematically shows a cross-section of a lighting arrangement 100 according to an exemplifying embodiment of the present invention.
  • the lighting device 120 is configured to project the violet light emitted from the at least one second solid state light source on a portion of the light exit window 160 which constitutes a sub-area, B, of an area, A, of the light exit window 160.
  • B « A such as B ⁇ 0.2- A, preferably B ⁇ 0.1-A, more preferably B ⁇ 0.05-A and most preferred B ⁇ 0.03-A.
  • the sub-area, B is merely indicated schematically, and that the sub-area, B, may be substantially any part or portion of the area, A.
  • Figs. 4a-4f schematically show cross-sections of a lighting arrangement 100 comprising optical components according to exemplifying embodiments of the present invention.
  • the respective optical component is in the form of a light guide 310, wherein the light guide 310 is arranged to guide the violet light emitted from the at least one second solid state light source 130 of the lighting device towards the light exit window 160.
  • the light guide 310 has an oblong shape and elongates in a direction, C, towards the light exit window 160.
  • the top part 312 of the light guide 310 is in contact with (abuts) the light exit window 160, whereas the bottom part 314 of the light guide 310 is arranged at a distance from the at least one second light source 130.
  • the lighting device 120 of the lighting arrangement 100 comprises a light guide 310 similar to that of Fig. 4a.
  • the top part 312 of the light guide 310 is arranged at a distance from the light exit window 160, and the bottom part 314 of the light guide 310 is arranged at a distance from the at least one second light source 130.
  • the lighting device of the lighting arrangement 100 comprises an optical component in the form of a light guide 310 similar to that of Fig. 4a or Fig. 4b.
  • the light guide 310 and the light exit window 160 are unitary.
  • the light guide 310 and the light exit window 160 may constitute a single piece, i.e. a monolithic piece, element, material or component.
  • the light guide 310 and the light exit window 160 are (have been) attached or fastened to each other.
  • the bottom part 314 of the light guide 310 is arranged at a distance from the at least one second light source 130.
  • the lighting device of the lighting arrangement 100 comprises an optical component in the form of a light guide 310 similar to that of Figs. 4a-4c.
  • the top part 312 of the light guide 310 is in contact with (abuts) the light exit window 160, and the bottom part 314 of the light guide 310 encloses the at least one second light source 130.
  • the lighting device of the lighting arrangement 100 comprises an optical component with a disc shape 320.
  • the disc-shaped optical component 320 is arranged between the at least one second light source 130 and he light exit window 160.
  • the plane of the disc-shaped optical component 320 is parallel to the plane of the light exit window 160.
  • the lighting device of the lighting arrangement 100 comprises an optical component with a disc shape 320 similar to that of Fig. 4e. In this example, however, a part of the light exit window 160 constitutes a (second) optical component 315.
  • Figs. 5a-5d schematically show luminaires 500 comprising one or more lighting arrangements 100 according to exemplifying embodiments of the present invention. It will be appreciated that the luminaires 500 may have different forms and/or constructions than those shown in Figs. 5a-5d, and that the luminaires 500 in the figures represent examples.
  • the luminaires 500 in Figs. 5a-5d all comprise an electrical connection connected to the lighting arrangement 100 for a supply of power to the at least one first solid state light source and the at least one second solid state light source of the lighting arrangement 100.
  • the luminaire 500 comprises one or more lighting arrangements 100 according to one or more of the previously exemplified embodiments.
  • the lighting arrangements 100 of the luminaire 500 may be arranged in the ceiling of e.g. a room, a corridor, etc.
  • the lighting arrangement 100 as inserted in the right-hand side of Fig. 5a shows the light exit window 160 through which the visible light mixed by the mixing chamber of the reflector of the lighting arrangement 100 will exit.
  • the violet light emitted from the at least one second solid state light source of the lighting arrangement 100 is also arranged to exit the lighting arrangement through the light exit window via the lighting device of the lighting arrangement 100, wherein the lighting device is configured to project the violet light emitted from the at least one second solid state light source on a portion of the light exit window 160.
  • the lighting device is configured to project the violet light emitted from the at least one second solid state light source on a portion of the light exit window 160 which constitutes a sub-area, B, of the area, A, of the light exit window 160, wherein the sub-area, B, is shaped as a ring.
  • an observer may see a ring-shaped part or opening of the light exit window through which the violet light may exit the lighting arrangement 100.
  • Fig. 5b shows an alternative construction of the light exit window 160 of the lighting arrangement 100 compared to the example shown in Fig. 5a.
  • the light exit window 160 comprises a pattern of first portions 162 through which the visible light may exit the lighting arrangement 100
  • the light exit window 160 further comprises a pattern of second portions 164 through which the violet light may exit the lighting arrangement 100.
  • the pattern of first portions 162 and/or the pattern of second portions 162 of the light exit window 160 may have many different forms, and that the light exit window 160 in Fig. 5b is shown merely as an example.
  • the lighting arrangement 100 of the luminaire 500 is exemplified by having the shape of a parallelepiped.
  • the lighting arrangements 100 of the luminaire 500 may be attached to the ceiling of e.g. a room, a corridor, etc.
  • the lighting device is configured to project the violet light emitted from the at least one second solid state light source on a portion of the light exit window 160 which constitutes a sub-area, B, of the area, A, of the light exit window 160, wherein the subarea, B, is shaped as a line.
  • the subarea, B is shaped as a line.
  • Fig. 5d shows a luminaire 500 comprising a lighting arrangement 100 with an alternative construction compared to that as exemplified in Fig. 5a.
  • the lighting arrangement 100, and the light exit window 160 thereof have a rectangular (e.g. square) cross-section.
  • the sub-area, B, of the area, A, of the light exit window 160 has the shape of four perpendicular lines, forming the shape of a rectangle or square.
  • first and/or second solid state light sources 110, 130, the reflector 140, the optical element(s) 300, etc. may have different shapes, dimensions and/or sizes than those depicted/described.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un agencement d'éclairage (100) comprenant une première source de lumière (110) agencée pour émettre une lumière visible dans une plage de longueurs d'onde de 430 à 800 nm, un dispositif d'éclairage (120) comprenant au moins une seconde source de lumière (130) agencée pour émettre une lumière violette dans une plage de longueurs d'onde de 400 à 430 nm, un réflecteur (140) entourant au moins partiellement la première source de lumière et le dispositif d'éclairage, et le réflecteur définissant une chambre de mélange (150) pour mélanger au moins une partie de la lumière visible émise par la première source de lumière, une fenêtre de sortie de lumière (160), la lumière visible et la lumière violette étant agencées pour sortir de l'agencement d'éclairage à travers la fenêtre de sortie de lumière, le dispositif d'éclairage étant conçu pour projeter la lumière violette sur une partie de la fenêtre de sortie de lumière, de telle sorte qu'un observateur regardant la partie de la fenêtre de sortie de lumière perçoit la lumière violette. La source de lumière violette est entourée par un élément de mise en forme de faisceau ou accouplée à celui-ci pour condenser la lumière émise par la source de lumière.
PCT/EP2021/087653 2021-01-12 2021-12-24 Agencement d'éclairage pour illumination et éclairage de désinfection WO2022152553A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21151096.1 2021-01-12
EP21151096 2021-01-12

Publications (1)

Publication Number Publication Date
WO2022152553A1 true WO2022152553A1 (fr) 2022-07-21

Family

ID=74175633

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/087653 WO2022152553A1 (fr) 2021-01-12 2021-12-24 Agencement d'éclairage pour illumination et éclairage de désinfection

Country Status (1)

Country Link
WO (1) WO2022152553A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH113616A (ja) * 1997-06-11 1999-01-06 Toshiba Lighting & Technol Corp 照明装置
DE102007037822A1 (de) * 2007-08-10 2009-02-12 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsvorrichtung
EP3336417A1 (fr) * 2016-12-15 2018-06-20 Philips Lighting Holding B.V. Système d'éclairage visible et par uv
CN211625175U (zh) * 2020-04-22 2020-10-02 杭州红毅科技有限公司 一种新型led紫外线灯

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH113616A (ja) * 1997-06-11 1999-01-06 Toshiba Lighting & Technol Corp 照明装置
DE102007037822A1 (de) * 2007-08-10 2009-02-12 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsvorrichtung
EP3336417A1 (fr) * 2016-12-15 2018-06-20 Philips Lighting Holding B.V. Système d'éclairage visible et par uv
CN211625175U (zh) * 2020-04-22 2020-10-02 杭州红毅科技有限公司 一种新型led紫外线灯

Similar Documents

Publication Publication Date Title
US20210080076A1 (en) Troffer-style fixture
US8764224B2 (en) Luminaire with distributed LED sources
US9494293B2 (en) Troffer-style optical assembly
JP5551714B2 (ja) Ｌｅｄ、光ガイド及びリフレクタを備える光源
JP5711147B2 (ja) Ｌｅｄ、光ガイド及びリフレクタを備える光源
CN107810362B (zh) 发射一部分uv光的照明组件
US8905575B2 (en) Troffer-style lighting fixture with specular reflector
EP2417386B1 (fr) Système réflecteur pour dispositif d'éclairage
US20110249467A1 (en) Light emitting device creating decorative light effects in a luminaire
US9512977B2 (en) Reduced contrast LED lighting system
EP3824217B1 (fr) Lampe a filament à del
JP2012514844A (ja) 光学要素及び当該光学要素を有する光源
KR101749654B1 (ko) 전반 조명을 위한 램프
US10679975B2 (en) Lighting device with UV LED
WO2009083853A1 (fr) Système d'éclairage
JP2022527113A (ja) きらめきをもたらす光反射性粒子を有するｌｅｄフィラメント
RU2742471C2 (ru) Оптическое устройство, усиливающее излучение электролюминесцентных источников света с помощью фильтра, содержащего дихроичные нанопроволоки из оксида цинка
WO2022152553A1 (fr) Agencement d'éclairage pour illumination et éclairage de désinfection
US20240077198A1 (en) Lighting arrangement for illumination and disinfection lighting
JP5057818B2 (ja) 発光装置
JP2017506797A (ja) Ｌｅｄ照明器具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21840065

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21840065

Country of ref document: EP

Kind code of ref document: A1