Adjustable scanned beam projector
First Claim
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1. An optical system, comprisingan array of light sources;
- a holographic light processing stage comprising, for each light source in the array, one or more holograms configured to receive light from the light source and diffract the light, the one or more holograms being selective for a property of the light that varies based upon the light source from which the light is received, anda scanning optical element configured to receive and scan the light from the holographic light processing stage.
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Abstract
Examples are disclosed herein relating to an adjustable scanning system configured to adjust light from an illumination source on a per-pixel basis. One example provides an optical system including an array of light sources, a holographic light processing stage comprising, for each light source in the array, one or more holograms configured to receive light from the light source and diffract the light, the one or more holograms being selective for a property of the light that varies based upon the light source from which the light is received, and a scanning optical element configured to receive and scan the light from the holographic light processing stage.
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Citations
20 Claims
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1. An optical system, comprising
an array of light sources; -
a holographic light processing stage comprising, for each light source in the array, one or more holograms configured to receive light from the light source and diffract the light, the one or more holograms being selective for a property of the light that varies based upon the light source from which the light is received, and a scanning optical element configured to receive and scan the light from the holographic light processing stage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A holographic light processing structure, comprising
a plurality of holograms each configured to diffract light received from a corresponding angle, two or more of the holograms being configured to diffract light received from different corresponding angles, and each hologram being configured to selectively impart a different optical characteristic on light for output by the holographic light processing structure.
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16. A method of controlling a light field on a per-pixel basis, the method comprising:
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emitting light via a first light source of an array of light sources; receiving the light from the first light source at a holographic light processing stage comprising a plurality of holograms, a first hologram of the plurality of holograms being configured to selectively diffract light from the first light source; outputting light from the first light source diffracted by the first hologram; receiving the light from the first light source at a scanning optical element and scanning the light to direct the light toward a first pixel; emitting light via a second light source of the array of light sources; receiving the light from the second light source at the holographic light processing stage, a second hologram of the plurality of holograms being configured to selectively diffract light from the second light source; outputting the light from the second light source diffracted by the second hologram differently than the light from the first light source; and receiving the light from the second light source at the scanning optical element and scanning the light to direct the light toward a second pixel. - View Dependent Claims (17, 18, 19, 20)
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Specification