Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2005-04-26
2005-04-26
Allen, Stephone B. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S559450, C359S629000, C356S237400
Reexamination Certificate
active
06884988
ABSTRACT:
An automated optical inspection system with improved accuracy achieved by reducing the negative effects of extraneous light. The system includes a light trap behind a two-way mirror.
REFERENCES:
patent: 5170063 (1992-12-01), Miyazaki et al.
patent: 6069690 (2000-05-01), Xu et al.
patent: 6191850 (2001-02-01), Chiang
patent: 760486 (1997-03-01), None
Allen Stephone B.
Landrex Technologies Co., Ltd.
Lee Patrick J.
MacPherson Kwok & Chen & Heid LLP
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