Optical integrating chamber lighting using multiple color sources for luminous applications
First Claim
1. A lighting fixture, for a luminous lighting application, the fixture 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;
an optical cavity having a diffusely reflective interior surface for receiving and combining light of the first and second wavelengths from the sources, and having an aperture for allowing emission of combined light of both the first wavelength and the second wavelength; and
a reflective deflector shaped like a number, character, letter, or symbol, having a proximal opening coupled to the aperture of the optical cavity, for directing the combined light emitted through the aperture so as to provide a visible luminous representation of the number, character, letter, or symbol.
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Accused Products
Abstract
A system provides light of selectable spectral characteristic (e.g. a selectable color combination of light), for luminous applications such as signage and indicator lights. An optical integrating cavity combines energy of different wavelengths from different sources, typically different-color LEDs. The cavity has a diffusely reflective interior surface and an aperture for allowing emission of combined light. Control of the intensity of emission of the sources sets the amount of each wavelength of light in the combined output and thus determines a spectral characteristic of the light output through the aperture. A deflector shaped like a number, character, letter, or other symbol, may be coupled to a similarly shaped aperture. By combining several such fixtures, it is possible to spell out words and phrases, with selectable color lighting. Disclosed fixture examples use an extruded body member with appropriately located reflective surfaces, to form both the cavity and deflector.
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Citations
32 Claims
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1. A lighting fixture, for a luminous lighting application, the fixture comprising:
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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; an optical cavity having a diffusely reflective interior surface for receiving and combining light of the first and second wavelengths from the sources, and having an aperture for allowing emission of combined light of both the first wavelength and the second wavelength; and a reflective deflector shaped like a number, character, letter, or symbol, having a proximal opening coupled to the aperture of the optical cavity, for directing the combined light emitted through the aperture so as to provide a visible luminous representation of the number, character, letter, or symbol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A lighting network comprising:
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a plurality of lighting fixtures, each lighting fixture comprising; a) a first of source of light of a first wavelength; b) a second source of light of a second wavelength, the second wavelength being different from the first wavelength; c) an optical cavity having a diffusely reflective interior surface for receiving and combining light of the first and second wavelengths from the sources, and having an aperture for allowing emission of combined light of both the first wavelength and the second wavelength; and d) a reflective deflector shaped like a number, character, letter, or symbol, having a proximal opening coupled to the aperture of the optical cavity, for directing the combined light emitted through the aperture so as to provide a visible luminous representation of the number, character, letter, or symbol; a plurality of control circuits, each coupled to the first and second sources of a respective one of the lighting fixtures for establishing output intensity of light output of each of the sources of the respective lighting fixture, so as to set a spectral characteristic of the combined light emitted by the respective lighting fixture; and a master controller communicatively networked to the control circuits, for providing a common control of all light emissions by the lighting fixtures. - View Dependent Claims (17)
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18. A lighting fixture, comprising:
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a first of source of light of a first wavelength; a second source of light of second wavelength, the second wavelength being different from the first wavelength; an extruded body member; a diffusely reflective optical integrating cavity formed by at least one first reflective interior surface of the extruded body member, for receiving and combining light of the first and second wavelengths from the sources, and having an aperture for allowing emission of combined light of both the first wavelength and the second wavelength; and a reflective deflector formed by at least one second reflective interior surface of the extruded body member, the reflective deflector having a proximal opening coupled to the aperture of the optical integrating cavity, for directing the combined light emitted through the aperture to a desired region. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A lighting network comprising:
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a plurality of lighting fixtures, each lighting fixture comprising; a) a first of source of light of a first wavelength; b) a second source of light of second wavelength, the second wavelength being different from the first wavelength; c) an extruded body member; d) a diffusely reflective optical integrating cavity formed by at least one first reflective interior surface of the extruded body member, for receiving and combining light of the first and second wavelengths from the sources, and having an aperture for allowing emission of combined light of both the first wavelength and the second wavelength; and e) a reflective deflector formed by at least one second reflective interior surface of the extruded body member, the reflective deflector having a proximal opening coupled to the aperture of the optical integrating cavity, for directing the combined light emitted through the aperture to a desired region; a plurality of control circuits, each coupled to the first and second sources of a respective one of the lighting fixtures for establishing output intensity of light output of each of the sources of the respective lighting fixture, so as to set a spectral characteristic of the combined light emitted by the respective lighting fixture; and a master controller communicatively networked to the control circuits, for providing a common control of all light emissions by the lighting fixtures. - View Dependent Claims (32)
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Specification