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Brent J Bos, Kenneth Schofield, Mark L Larson, Niall R Lynam: Rain sensor. Donnelly Corporation, VanDyke Gardner Linn & Burkhart, November 6, 2001: US06313454 (381 worldwide citation)

A vehicular rain sensor system for detecting precipitation on an exterior surface of a window including a illumination sensor that is decoupled from the window. The illumination sensor is preferably an imaging array sensor which communicates a signal to a control which further determines whether rai ...


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Kenneth Schofield, Mark L Larson, Keith J Vadas: Vehicle rain sensor using imaging sensor. Donnelly Corporation, Van Dyke Gardner Linn & Burkhart, November 20, 2001: US06320176 (340 worldwide citation)

A vehicular rain sensor which senses precipitation at a vehicle window. The rain sensor comprises an imaging array sensor and a control. The imaging array sensor is directed at the vehicle window from inside the vehicle and comprises a camera device capable of imaging precipitation at a surface of t ...


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Joseph S Stam, Jon H Bechtel, John K Roberts: Moisture sensor and windshield fog detector using an image sensor. Gentex Corporation, Brooks & Kushman P C, July 13, 1999: US05923027 (340 worldwide citation)

A control system for automatically detecting moisture on the windshield of a vehicle. The automatic moisture detecting system includes an optical system for imaging a portion of the windshield on to an image array sensor, such as a CMOS active pixel sensor. The voltages of each of the pixels which r ...


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Kenneth L Schierbeek, Mark L Larson, Kenneth Schofield: Continuously adaptive moisture sensor system for wiper control. Donnelly Corporation, Price Heneveld Cooper DeWitt & Litton, April 10, 1990: US04916374 (290 worldwide citation)

An adaptive moisture sensor system includes a moisture sensor unit having a moisture sensor, which produces a moisture signal, a reference signal generating circuit and a comparator circuit for comparing the moisture signal with the reference signal and for producing an indication to the vehicle's w ...


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Kenneth L Schierbeek, Mark L Larson, Kenneth Schofield: Control for a moisture sensor. Donnelly Corporation, Price Heneveld Cooper DeWitt & Litton, September 11, 1990: US04956591 (261 worldwide citation)

A control for a moisture sensing assembly, adapted for mounting on the inner surface of a vehicle window or windshield to control vehicle accessories such as windshield wipers, maximizes the window area being sensed in relationship to the size of the assembly and provides immunity to interference fr ...



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