Direct optical image projectors
First Claim
Patent Images
1. An apparatus, comprising:
- a reconfigurable spatial light modulator capable of producing spatially varying amplitude and/or phase modulations of an incident light wavefront;
a light source being configured to direct an illumination light beam towards the reconfigurable spatial light modulator such that the modulator produces a modulated outgoing light beam; and
a transmission filter being configured to spatially filter a light pattern formed by the outgoing light beam and to selectively transmit light from substantially only one diffractive order of the light pattern.
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Abstract
An apparatus includes a reconfigurable spatial light modulator, a light source, and a transmission filter. The reconfigurable spatial light modulator is capable of producing spatially varying amplitude and/or phase modulations of an incident light wavefront. The light source is configured to direct an illumination light beam towards the reconfigurable spatial light modulator such that the modulator produces a modulated outgoing light beam there from. The transmission filter is configured to spatially filter a light pattern formed by the outgoing light beam and to selectively transmit light from substantially only one diffractive order of the light pattern.
49 Citations
18 Claims
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1. An apparatus, comprising:
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a reconfigurable spatial light modulator capable of producing spatially varying amplitude and/or phase modulations of an incident light wavefront; a light source being configured to direct an illumination light beam towards the reconfigurable spatial light modulator such that the modulator produces a modulated outgoing light beam; and a transmission filter being configured to spatially filter a light pattern formed by the outgoing light beam and to selectively transmit light from substantially only one diffractive order of the light pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, comprising:
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modulating a wavefront of an incident coherent light beam to produce an outgoing light beam having spatial variations on wavefronts thereof; focusing a light beam such that the outgoing light beam can form a diffractive light pattern that is approximately a Fourier transform of the modulated wavefront; spatially filtering the diffractive light pattern to transmit light of substantially only one diffractive order therein; projecting the transmitted light onto a viewing screen to produce an image. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification