Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-12-12
2006-12-12
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C340S552000
Reexamination Certificate
active
07148467
ABSTRACT:
An object detecting apparatus for a vehicle has a light radiation unit and a light receiver unit disposed in a case having a light radiating window and a light receiving window for detecting an object or a distance to the object. The apparatus further has a case inside condition sensor for detecting a case inside condition, which changes when the case is broken. The case inside condition sensor may detect temperatures, humidity or pressures in the case. A breakage of the case is detected from a change in the detected case inside conditions. A case outside condition may be additionally used to detect the breakage of the case.
REFERENCES:
patent: 5243326 (1993-09-01), Disabato
patent: 5689328 (1997-11-01), Katayama
patent: 2002-031685 (2002-01-01), None
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