Uniform speckle reduced laser projection using spatial and...

Details Uniform speckle reduced laser projection using spatial and... Uniform speckle reduced laser projection using spatial and...

2011-06-14

2011-06-14

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Composite projected image

Multicolor picture

C353S030000, C353S032000, C353S033000, C353S034000, C353S037000, C353S038000, C353S081000, C353S094000, C353S098000, C353S099000, C353S119000, C372S050100, C372S050121, C372S050110, C372S050120, C372S108000, C372S034000, C372S035000, C372S036000, C359S629000, C359S634000, C359S636000, C359S637000, C359S638000, C359S639000, C359S640000, C349S007000, C349S008000, C349S009000

Reexamination Certificate

active

07959297

ABSTRACT:
A digital image projector includes a light assembly configured to project light along a light path from at least one laser array light source, the projected light having an overlapping far field illumination in a far field illumination portion of the light path; a temporally varying optical phase shifting device configured to be in the light path; an optical integrator configured to be in the light path; a spatial light modulator located downstream of the temporally varying optical phase shifting device and the optical integrator in the light path, the spatial light modulator configured to be located in the far field illumination portion of the light path; and projection optics located downstream of the spatial light modulator in the light path, the projection optics configured to direct substantially speckle free light from the spatial light modulator toward a display surface.

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