Optics: image projectors – Composite projected image
Reexamination Certificate
2004-10-27
2008-10-28
Dowling, William C. (Department: 2851)
Optics: image projectors
Composite projected image
C353S094000, C345S001300
Reexamination Certificate
active
07441902
ABSTRACT:
A plurality of image projection modules is operative for causing selected pixels in overlapping raster patterns to be illuminated to produce a large size image of high resolution of VGA quality in monochrome or color. The selected pixels in an overlap region of the patterns are illuminated at a lesser intensity to provide uniform brightness over the image. Multiple single mode lasers, or a multimode laser with an aperture stop, are employed to increase laser output power. Speckle noise is reduced by controlling the optical transmission characteristic of a projection screen. Three-dimensional images are generated by moving the screen. Cross-coupling between drive and feedback mechanisms in image projection is reduced for better image quality.
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Dvorkis Paul
Goldman Ron
Tan Chinh
Wood Frederick F.
Yavid Dmitriy
Dowling William C.
Kirschstein et al.
Symbol Technologies Inc.
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