Invention Grant
US07959297B2 Uniform speckle reduced laser projection using spatial and temporal mixing
有权
使用空间和时间混合均匀斑点减少激光投影
- Patent Title: Uniform speckle reduced laser projection using spatial and temporal mixing
- Patent Title (中): 使用空间和时间混合均匀斑点减少激光投影
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Application No.: US12121185Application Date: 2008-05-15
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Publication No.: US07959297B2Publication Date: 2011-06-14
- Inventor: Barry D. Silverstein , Gary E. Nothhard
- Applicant: Barry D. Silverstein , Gary E. Nothhard
- Applicant Address: US NY Rochester
- Assignee: Eastman Kodak Company
- Current Assignee: Eastman Kodak Company
- Current Assignee Address: US NY Rochester
- Agent Kevin E. Spaulding
- Main IPC: G03B21/00
- IPC: G03B21/00

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.
Public/Granted literature
- US20090284713A1 UNIFORM SPECKLE REDUCED LASER PROJECTION USING SPATIAL AND TEMPORAL MIXING Public/Granted day:2009-11-19
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