Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-04-24
2007-04-24
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S574000, C340S602000, C340S438000, C073S029010, C073S029040, C073S029050
Reexamination Certificate
active
10916444
ABSTRACT:
An image processing system that detects foreign matter on a glass window of a vehicle and objects in front of the vehicle. The system includes an image processor, a first lamp, and a second lamp. On/off control of the first and second lamps is controlled by the image processor. Light from the first lamp is reflected from the outer sauce of the glass when raindrops are present on the outside of the glass. Light from the second lamp is reflected from the inner surface of the glass when moisture is present on the inside of the glass. Any reflected light goes through a lens and an optical filter with prescribed optical characteristics to an image device. The lens is focused to a point beyond the window so that the image processor an also detect objects in front of the vehicle.
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Sensors And Microsystems, Proceedings of the 8th Italian Conference, Trento, Italy, Feb. 12-14, 2003, Pallaro et al, pp. 534-539 XP008060324.
Fukuhara Masaaki
Furusawa Isao
Kasuya Hiroyuki
Monji Tatsuhiko
Muramatsu Shoji
Antonelli Terry Stout & Kraus LLP
Epps Georgia
Monbleau Davienne
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