Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2011-03-08
2011-03-08
Previl, Daniel (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S332000, C340S815750
Reexamination Certificate
active
07902988
ABSTRACT:
An illuminance sensor for detecting brightness of outside a vehicle having a windshield includes first and second light receiving elements and a light emitting element for emitting light to the windshield. The first light receiving element outputs a first signal corresponding to outside light. The light emitted from the light emitting element is reflected at an outside surface of the windshield. The second light receiving element outputs a second signal corresponding to the reflected light. The outside light passes a first region of the windshield through which the light emitted from the light emitting element passes or a second region of the windshield through which the reflected light passes. The first signal is corrected based on the second signal to detect the brightness.
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Denson Corporation
Nixon & Vanderhye PC
Previl Daniel
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