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US 2011/0234985 A1Published application
Despeckling laser-image-projection system
AssigneeAlcatel-Lucent USA Inc.
InventorsRoland Ryf, Gang Chen
Life of this patent
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Abstract
An optical device for projecting an image is disclosed. In one embodiment, the optical device includes a configurable optical diffuser adapted to produce a diffuse optical beam having a temporally varying pattern of angular divergence. The optical device further includes a plurality of lenslet pairs to shape the diffuse optical beam and a spatial light modulator to spatially modulate the shaped optical beam to project an image.
Claims20
An optical device for projecting an image, the optical device comprising:
- a configurable optical diffuser adapted to produce a diffuse optical beam having a temporally varying pattern of angular divergence;
- a fly's eye (FE) integrator adapted to shape the diffuse optical beam;
- and
- a spatial light modulator (SLM) adapted to spatially modulate a shaped optical beam produced by the FE integrator to project the image.
1 more element
An optical device for projecting an image, the optical device comprising:
- a pair of crossed cylindrical lenses to provide collimated coherent light;
- a moveable diffuser to receive the collimated coherent light to produce a diffuse optical beam having a temporally varying pattern of angular divergence;
- and
- a plurality of lenslet pairs arranged side by side with each other and adapted to shape the diffuse optical beam.
1 more element
Dependencies are inferred from the claim text.