Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2007-12-25
2007-12-25
Cherry, Euncha P. (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
Reexamination Certificate
active
11133892
ABSTRACT:
A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color. The brightness of the illuminated pixels is enhanced by combining constituent laser beams of the same wavelength. The contrast of the illuminated pixels is improved by sweeping a composite beam across a polarized screen, and by making the polarizations of all the constituent laser beams of the composite beam the same.
REFERENCES:
patent: 5317348 (1994-05-01), Knize
patent: 6879306 (2005-04-01), Spoonhower et al.
patent: 6945652 (2005-09-01), Sakata et al.
Stern Miklos
Tan Chinh
Cherry Euncha P.
Kirschstein et al.
Symbol Technologies Inc.
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