Exterior element sensor

Details Exterior element sensor Exterior element sensor

2005-07-05

2008-03-25

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S227250, C318S480000

Reexamination Certificate

active

07348586

ABSTRACT:
An exterior element sensor can include an optical element mounted on a window. The optical element can include a cylindrical lens having both ends shaped spherically and a central portion that exerts little or no influence on exterior element detection (such as rain, snow, ice, water, liquid, debris, or other materials) when visible light transmits therethrough. In addition, infrared or other light can be used to detect exterior elements located on the window. A black filter can be employed, if desired, which blocks visible light and transmits infrared light therethrough to separate visible light from infrared light, thereby allowing the exterior element sensor to be used together with an exterior light sensor without losing accuracy.

REFERENCES:
patent: 6376824 (2002-04-01), Michenfelder et al.
patent: 2001-066246 (2001-03-01), None

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