APPARATUS AND METHODS RELATING TO WAVELENGTH CONDITIONING OF ILLUMINATION
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Abstract
Lighting systems comprising a spectrum former upstream from a reflective pixelated spatial light modulator (reflective SLM), the SLM reflecting substantially all of the light in the spectrum into at least two different light paths, that do not reflect back to the light source or the spectrum former. At least one of the light paths acts as a projection light path and transmits desired light out of the lighting system. The lighting systems provide virtually any desired color(s) and intensity(s) of light, and avoid overheating problems by deflecting unwanted light and other electromagnetic radiation out of the system or to a heat management system. The systems can be part of another system, a luminaire, or any other suitable light source. The systems can provide virtually any desired light, from the light seen at the break of morning to specialized light for treating cancer or psoriasis, and may change color and intensity at speeds that are perceptually instantaneous.
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Citations
95 Claims
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1-75. -75. (canceled)
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76. A lighting system that provides a selected, variable selected spectral output and wavelength dependent intensity distribution, the lighting system comprising:
- a) a high output light source and an aperture wherein the high output light source is focused on the aperture and the aperture transmits light from the light source along a light path in an image of the aperture;
b) a spectrum former downstream from and optically connected to receive the image of the aperture and is configured to provide a spectrum from the image of the aperture; and
c) a pixelated spatial light modulator located downstream from and optically connected to the spectrum former, the pixelated spatial light modulator configured to pass desired light from the spectrum former to select a segment of light, wherein the pixelated spatial light modulator is operably connected to at least one controller containing computer-implemented programming that controls an on/off pattern of pixels in the pixelated spatial light modulator to provide a variable desired segment of light consisting essentially of a variable desired selected spectral output and a desired wavelength dependent intensity distribution. - View Dependent Claims (77, 78, 79, 80, 81, 82, 83, 84, 85)
- a) a high output light source and an aperture wherein the high output light source is focused on the aperture and the aperture transmits light from the light source along a light path in an image of the aperture;
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86. A method of providing light to a target comprising providing a variable selected spectral output and wavelength dependent intensity distribution in the light emitted to the target, the method comprising:
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directing focused light from a high output light source to an aperture; transmitting light from the aperture to a spectrum former along a light path, wherein the light is in an image of the aperture; receiving the light at the spectrum former and generating a spectrum from the light; and transmitting the spectrum to a pixelated spatial light modulator located downstream from and optically connected to the spectrum former, wherein the pixelated spatial light modulator is configured to pass desired light from the spectrum former to select a segment of light, and wherein the pixelated spatial light modulator is operably connected to at least one controller containing computer-implemented programming that controls an on/off pattern of pixels in the pixelated spatial light modulator to provide a desired segment of light consisting essentially of a desired selected spectral output and a desired wavelength dependent intensity distribution. - View Dependent Claims (87, 88, 89, 90, 91, 92, 93, 94, 95)
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Specification