Light output system with reflector and lens for highly spatially uniform light output
First Claim
Patent Images
1. An optical system comprising:
- a reflector comprising;
a light input opening;
a light output opening; and
reflective interior sidewalls extending between the light input opening and the light output opening, anda Fourier transform lens proximate the light output opening of the reflector, wherein the Fourier transform lens is configured to receive light from the reflector and to transform the light from the reflector into lens output light having increased spatial uniformity relative to the light received from the reflector.
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Abstract
In some embodiments, optical systems with a reflector and a lens proximate a light output opening of the reflector provide light output with high spatial uniformity and high efficiency. The reflectors are shaped to provide substantially angularly uniform light output and the lens is configured to transform this angularly uniform light output into spatially uniform light output. The light output may be directed into a light modulator, which modulates the light to project an image.
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Citations
32 Claims
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1. An optical system comprising:
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a reflector comprising; a light input opening; a light output opening; and reflective interior sidewalls extending between the light input opening and the light output opening, and a Fourier transform lens proximate the light output opening of the reflector, wherein the Fourier transform lens is configured to receive light from the reflector and to transform the light from the reflector into lens output light having increased spatial uniformity relative to the light received from the reflector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification