Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2005-05-31
2008-10-07
Le, Que T. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C250S214100
Reexamination Certificate
active
07432489
ABSTRACT:
A system and method for errant laser beam detection are provided for effectively detecting small coating failures in a cost effective and robust manner. In one embodiment, a detection system includes a continuity circuit on a printed circuit board (PCB) having metal (e.g., copper) traces which are designed to burn through if an errant beam strikes them. The traces are sized and patterned appropriately to sense a minimum subaperture size.
REFERENCES:
patent: 4578670 (1986-03-01), Joergensen
patent: 5151095 (1992-09-01), Teeple, Jr.
patent: 6518586 (2003-02-01), Heberer
Boretz Harry C.
Pileri David
Tam Yan S.
Bui-Pho Pascal M
Le Que T.
MacPherson Kwok Chen & Heid, LLP.
Park David S.
The Boeing Company
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