LASER PROJECTOR WITH REDUCED SPECKLE
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Accused Products
Abstract
The present invention provides a light source for a projector system, and method of operating the light source as well as a projector system that provides:
i. a substantially uniform brightness across the surface of an image modulator, and
ii. at each point of the surface of the image modulator a more uniform filling of the available angular space.
Embodiments of the present invention use a laser light source for use with an image modulator, the light source emitting light with multiple wavelengths for at least one primary color and a light integrator system that for each of the wavelengths is adapted to provide:
i. a substantially uniform brightness across the surface of the image modulator, and
ii. at each point of the surface of the image modulator a more uniform filling of the available angular space.
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Citations
49 Claims
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1-25. -25. (canceled)
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26. A light source apparatus (12) for use with a projector (10) having a light modulator (14) for receiving a plurality of light beams and for projecting the light beams towards a display (20), comprising:
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a laser light source (24) with multiple wavelengths for at least one primary color arranged to output a laser light beam (25); an integrator assembly (30) comprising; at least two integrator elements (31,33); and a first light diffusing element (34), positioned in between said two integrator elements, wherein the first light diffusing element (34) is arranged to receive a laser light and forward a plurality of light beams at a range of angles, the integrator assembly (30) being adapted such that for each of the wavelengths; a substantially uniform brightness is achieved across the surface of an image modulator (14) and at each point of the surface of the image modulator (14) a substantially uniform filling of the available angular space is achieved. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification