CA2558958A1 - Optical integrating chamber lighting using multiple color sources to adjust white light - Google Patents
Optical integrating chamber lighting using multiple color sources to adjust white light Download PDFInfo
- Publication number
- CA2558958A1 CA2558958A1 CA002558958A CA2558958A CA2558958A1 CA 2558958 A1 CA2558958 A1 CA 2558958A1 CA 002558958 A CA002558958 A CA 002558958A CA 2558958 A CA2558958 A CA 2558958A CA 2558958 A1 CA2558958 A1 CA 2558958A1
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- 230000003287 optical effect Effects 0.000 title claims abstract 14
- 230000003595 spectral effect Effects 0.000 claims abstract 9
- 239000003086 colorant Substances 0.000 claims 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
- F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/008—Combination of two or more successive refractors along an optical axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0254—Spectrometers, other than colorimeters, making use of an integrating sphere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0252—Diffusing elements; Afocal elements characterised by the diffusing properties using holographic or diffractive means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0284—Diffusing elements; Afocal elements characterized by the use used in reflection
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- 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
- G02B6/0005—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 of the fibre type
- G02B6/0008—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 of the fibre type the light being emitted at the end of the fibre
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0404—Signs, boards or panels, illuminated from behind the insignia the light source being enclosed in a box forming the character of the sign
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/06—Signs, boards or panels, illuminated from behind the insignia using individual cut-out symbols or cut-out silhouettes, e.g. perforated signs
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/14—Arrangements of reflectors therein
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
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- 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
- H05B35/00—Electric light sources using a combination of different types of light generation
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- 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]
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- 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
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- 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
- H05B45/22—Controlling the colour of the light using optical feedback
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- 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]
- H05B45/30—Driver circuits
- H05B45/395—Linear regulators
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- 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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
- F21V11/10—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures of iris type
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- 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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
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- 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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/10—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type
- F21V2200/13—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type the light being emitted at the end of the guide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/20—Combination of light sources of different form
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- 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]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/08—Arrangements of light sources specially adapted for photometry standard sources, also using luminescent or radioactive material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0264—Electrical interface; User interface
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
- G01J3/501—Colorimeters using spectrally-selective light sources, e.g. LEDs
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- 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
- H05B45/28—Controlling the colour of the light using temperature feedback
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S362/00—Illumination
- Y10S362/80—Light emitting diode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S362/00—Illumination
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Abstract
A system (10) provides white light having a selectable spectral characteristic (e.g. a selectable color temperature) using an optical integrating cavity (11) to combine energy of different wavelengths from different sources with white light. The cavity has a diffusively reflective interior surface and an aperture (17) for allowing emission of combined light. Control of the intensity of emission of the sources sets the amount of primary color light of each wavelength added to the substantially white input light output and thus determines a spectral characteristic of the white light output through the aperture. A variety of different elements may optically process the combined light output, such a deflector, a variable iris, and a lens a variable focusing lenses system, a collimator, a holographic diffuser and combinations thereof.
Claims (25)
1. A lighting apparatus, comprising:
a first source of light of a first wavelength;
a second source of light of a second wavelength, the second wavelength being different from the first wavelength;
a third source of light, wherein the third source produces substantially white light; and an optical cavity having a diffusely reflective interior surface for receiving and combining light of the first and second wavelengths and the substantially white light, from the sources of light, to form white light of a desired spectral characteristic, and having an aperture for allowing emission of the white light of the desired spectral characteristic.
a first source of light of a first wavelength;
a second source of light of a second wavelength, the second wavelength being different from the first wavelength;
a third source of light, wherein the third source produces substantially white light; and an optical cavity having a diffusely reflective interior surface for receiving and combining light of the first and second wavelengths and the substantially white light, from the sources of light, to form white light of a desired spectral characteristic, and having an aperture for allowing emission of the white light of the desired spectral characteristic.
2. The apparatus of claim 1, further comprising an optical processing element coupled to the aperture of the optical cavity.
3. The apparatus of claim 2, wherein the optical processing element comprises a deflector having a reflective firmer surface coupled to the aperture to deflect at least some of the combined light.
4. The apparatus of claim 3, wherein at least a substantial portion of the reflective inner surface of the deflector exhibits a diffuse reflective characteristic with respect to the combined light.
5. The apparatus of claim 3, wherein:
a first portion of the reflective inner surface of the deflector exhibits a diffuse reflective characteristic; and a second portion of the reflective inner surface of the deflector exhibits a specular reflective characteristic.
a first portion of the reflective inner surface of the deflector exhibits a diffuse reflective characteristic; and a second portion of the reflective inner surface of the deflector exhibits a specular reflective characteristic.
6. The apparatus of any of claims 1, wherein the optical processing element comprises at least one element selected from the group consisting of: a variable opening iris, a variable focusing lens system, a light collimator, and a transmissive diffuser.
7. The apparatus of any of claims 1, wherein the optical processing element comprises a variable focusing lens system and a variable opening iris located between the cavity and the variable focusing lens system.
8. The apparatus of any of claims 1, wherein the optical processing element comprises a transmissive diffuser, selected from the group consisting of a diffusing lens, a curved transmissive cover over the aperture of the optical cavity and a holographic diffuser.
9. The apparatus of any of claims 1-8, further comprising adjustable control circuitry coupled to the first and second sources for establishing intensity of light from each of the sources, so as to adjust they spectral characteristic of white light emitted through the aperture.
10. The apparatus of any of claims 1-8, wherein:
the first source comprises one or more light emitting diodes for emitting light of a first visible color; and the second source comprises one or more light emitting diodes for emitting light of a second visible color, wherein the second color is different from the first color.
the first source comprises one or more light emitting diodes for emitting light of a first visible color; and the second source comprises one or more light emitting diodes for emitting light of a second visible color, wherein the second color is different from the first color.
11. The apparatus of claim 10, wherein:
the one or more first color light emitting diodes comprise an initially active light emitting diode for emitting light of the first color and an initially inactive light emitting diode for emitting light of the first color on an as needed basis; and the one or more second color light emitting diodes comprises an initially active light emitting diode for emitting light of the second color and an initially inactive light emitting diode for emitting light of the second color on an as needed basis.
the one or more first color light emitting diodes comprise an initially active light emitting diode for emitting light of the first color and an initially inactive light emitting diode for emitting light of the first color on an as needed basis; and the one or more second color light emitting diodes comprises an initially active light emitting diode for emitting light of the second color and an initially inactive light emitting diode for emitting light of the second color on an as needed basis.
12. The apparatus of any of claim 10, wherein the third source comprises one or more white light emitting diodes or one or more incandescent or fluorescent light bulbs.
13. The apparatus of any of claims 1-8, further comprising a fourth source for supplying light of a third wavelength into the optical cavity for combination with the light of the first and second wavelengths and with the substantially white light, the third wavelength being different from the first wavelength and from the second wavelength.
14. The apparatus of claim 13, wherein:
the first source comprises one or more light emitting diodes for emitting light of a first visible color;
the second source comprises one or more light emitting diodes for emitting light of a second visible color, wherein the second color is different from the first color; and the fourth source comprises one or more light emitting diodes for emitting light of a third visible color, wherein the third color is different from the first color and from the second color.
the first source comprises one or more light emitting diodes for emitting light of a first visible color;
the second source comprises one or more light emitting diodes for emitting light of a second visible color, wherein the second color is different from the first color; and the fourth source comprises one or more light emitting diodes for emitting light of a third visible color, wherein the third color is different from the first color and from the second color.
15. The apparatus of claim 14, wherein the first, second and third colors are red, green and blue, respectively.
16. A system comprising:
a plurality of apparatuses for emitting light, each as specified in claim 1;
and a master controller coupled to control each of the apparatuses, for providing a common control of all light emissions by the apparatuses.
a plurality of apparatuses for emitting light, each as specified in claim 1;
and a master controller coupled to control each of the apparatuses, for providing a common control of all light emissions by the apparatuses.
17. A lighting system, for providing variable white lighting for studio or theater applications, the lighting system comprising:
a first of source of light of a first wavelength;
a second source of light of a second wavelength, the second wavelength being different from the first wavelength;
a third source of light, for supplying a substantially white light;
an optical cavity having a diffusely reflective interior surface for receiving and combining light of the first and second wavelengths and the substantially white light from the sources, to form white light of a desired spectral characteristic, and having an aperture for allowing emission of the white light of the desired spectral characteristic;
a variable opening iris. optically coupled to the aperture of the optical cavity, for controlling an amount of the light of the desired spectral characteristic emitted toward a subject to be illuminated; and control circuitry coupled to at least the first and second sources for establishing intensity of light from the first and second sources, so as to set the desired spectral characteristic of the light directed toward the subject to be illuminated in the studio or theater.
a first of source of light of a first wavelength;
a second source of light of a second wavelength, the second wavelength being different from the first wavelength;
a third source of light, for supplying a substantially white light;
an optical cavity having a diffusely reflective interior surface for receiving and combining light of the first and second wavelengths and the substantially white light from the sources, to form white light of a desired spectral characteristic, and having an aperture for allowing emission of the white light of the desired spectral characteristic;
a variable opening iris. optically coupled to the aperture of the optical cavity, for controlling an amount of the light of the desired spectral characteristic emitted toward a subject to be illuminated; and control circuitry coupled to at least the first and second sources for establishing intensity of light from the first and second sources, so as to set the desired spectral characteristic of the light directed toward the subject to be illuminated in the studio or theater.
18. The lighting system of claim 17, further comprising a variable focusing lens system, for adjustably focusing the light emitted through the iris toward the subject to be illuminated.
19. The lighting system of claim 17 or claim 18, wherein:
the first source comprises one or more light emitting diodes for emitting light of a first visible color; and the second source comprises one or more light emitting diodes for emitting light of a second visible color, wherein the second color is different from the first color.
the first source comprises one or more light emitting diodes for emitting light of a first visible color; and the second source comprises one or more light emitting diodes for emitting light of a second visible color, wherein the second color is different from the first color.
20. The lighting system of claim 19, wherein the control circuitry comprises:
a color sensor responsive to the combined light; and logic circuitry responsive to color detected by the sensor to control output intensity of the one or more first color light emitting diodes and intensity of the one or more second color light emitting diodes.
a color sensor responsive to the combined light; and logic circuitry responsive to color detected by the sensor to control output intensity of the one or more first color light emitting diodes and intensity of the one or more second color light emitting diodes.
21. The lighting system of claim 19, wherein:
the one or more first color light emitting diodes comprise an initially active light emitting diode for emitting light of the first color and an initially inactive diode for emitting light of the first color on an as needed basis; and the one ore more second color light emitting diodes comprises an initially active light emitting diode for emitting light of the second color and an initially inactive diode for emitting light of the second color on an as needed basis.
the one or more first color light emitting diodes comprise an initially active light emitting diode for emitting light of the first color and an initially inactive diode for emitting light of the first color on an as needed basis; and the one ore more second color light emitting diodes comprises an initially active light emitting diode for emitting light of the second color and an initially inactive diode for emitting light of the second color on an as needed basis.
22. The lighting system of claim 21, wherein the control circuitry comprises:
a color sensor responsive to the combined light; and logic circuitry responsive to color detected by the sensor to control output intensity of the one or more first color light emitting diodes and intensity of the one or more second color light emitting diodes, and wherein the logic circuitry is responsive to the detected color to selectively activate the inactive light emitting diodes, as needed to maintain a desired color distribution in the emitted light.
a color sensor responsive to the combined light; and logic circuitry responsive to color detected by the sensor to control output intensity of the one or more first color light emitting diodes and intensity of the one or more second color light emitting diodes, and wherein the logic circuitry is responsive to the detected color to selectively activate the inactive light emitting diodes, as needed to maintain a desired color distribution in the emitted light.
23. The lighting system of claim 22, wherein the third source comprises one or more light emitting diodes for supplying substantially white light into the optical cavity for combination with the light of the first and second wavelengths.
24. The lighting system of claim 17, wherein the third source comprises one or more incandescent or fluorescent light bulbs.
25. A lighting network comprising:
a plurality of lighting systems, each as specified in claim 17; and a master controller communicatively networked to the control circuitry of each of the lighting systems, for providing a common control of all light emissions by the lighting systems.
a plurality of lighting systems, each as specified in claim 17; and a master controller communicatively networked to the control circuitry of each of the lighting systems, for providing a common control of all light emissions by the lighting systems.
Priority Applications (1)
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CA002680501A CA2680501A1 (en) | 2004-04-27 | 2005-04-25 | Optical integrating chamber lighting using multiple color sources to adjust white light |
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US10/832,464 | 2004-04-27 | ||
US10/832,464 US6995355B2 (en) | 2003-06-23 | 2004-04-27 | Optical integrating chamber lighting using multiple color sources |
PCT/US2005/013779 WO2005106408A2 (en) | 2004-04-27 | 2005-04-25 | Optical integrating chamber lighting using multiple color sources to adjust white light |
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CA002680501A Division CA2680501A1 (en) | 2004-04-27 | 2005-04-25 | Optical integrating chamber lighting using multiple color sources to adjust white light |
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CA2558958C CA2558958C (en) | 2010-11-16 |
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CA002680501A Abandoned CA2680501A1 (en) | 2004-04-27 | 2005-04-25 | Optical integrating chamber lighting using multiple color sources to adjust white light |
CA002558961A Expired - Fee Related CA2558961C (en) | 2004-04-27 | 2005-04-25 | Optical integrating chamber lighting using multiple color sources for luminous applications |
CA002558957A Expired - Fee Related CA2558957C (en) | 2004-04-27 | 2005-04-26 | Precise repeatable setting of color characteristics for lighting applications |
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CA002680501A Abandoned CA2680501A1 (en) | 2004-04-27 | 2005-04-25 | Optical integrating chamber lighting using multiple color sources to adjust white light |
CA002558961A Expired - Fee Related CA2558961C (en) | 2004-04-27 | 2005-04-25 | Optical integrating chamber lighting using multiple color sources for luminous applications |
CA002558957A Expired - Fee Related CA2558957C (en) | 2004-04-27 | 2005-04-26 | Precise repeatable setting of color characteristics for lighting applications |
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EP (3) | EP1740882A4 (en) |
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- 2005-04-25 CA CA002680501A patent/CA2680501A1/en not_active Abandoned
- 2005-04-25 EP EP05740253A patent/EP1740882A4/en not_active Withdrawn
- 2005-04-25 EP EP05758377A patent/EP1740883A4/en not_active Withdrawn
- 2005-04-25 WO PCT/US2005/014092 patent/WO2005106963A2/en not_active Application Discontinuation
- 2005-04-25 CA CA002558961A patent/CA2558961C/en not_active Expired - Fee Related
- 2005-04-25 US US10/558,480 patent/US7374311B2/en active Active
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- 2005-04-25 JP JP2007510856A patent/JP2007535115A/en active Pending
- 2005-04-25 WO PCT/US2005/013779 patent/WO2005106408A2/en not_active Application Discontinuation
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- 2005-04-26 WO PCT/US2005/014107 patent/WO2005105381A2/en not_active Application Discontinuation
- 2005-04-26 US US10/555,094 patent/US7497590B2/en active Active
- 2005-04-26 CA CA002558957A patent/CA2558957C/en not_active Expired - Fee Related
- 2005-04-26 EP EP05756155A patent/EP1740350A4/en not_active Withdrawn
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2008
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2009
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