Optics: image projectors – Lamp control
Reexamination Certificate
2006-06-05
2010-02-23
Dowling, William C (Department: 2851)
Optics: image projectors
Lamp control
C353S094000, C372S038090
Reexamination Certificate
active
07665852
ABSTRACT:
Red, blue and green lasers respectively emit a plurality of red, blue and green laser beams having respective output powers. The beams are optically focused and collinearly arranged to form a composite beam which is swept by a pair of scan mirrors in a pattern of scan lines on a projection surface, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the composite beam to produce an image. A safety circuit detects a malfunction of at least one of the lasers and the scan mirrors, and deenergizes the at least one of the lasers and the scan mirrors upon detection of the malfunction.
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Difazio Costanzo
Gonzalez Daniel
Mazz Thomas
Stern Miklos
Tan Chinh
Dowling William C
Howard Ryan
Kirschstein et al.
Symbol Technologies Inc.
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