Glare sensor for a vehicle

Details Glare sensor for a vehicle Glare sensor for a vehicle

1993-05-26

1995-06-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250205, B60Q 114

Patent

active

054262941

ABSTRACT:
A glare sensor includes a light condensing means for condensing light beams from the fore scene and photo sensing element for sensing the light beams from the light condensing means. The photo sensing element is constructed with photodiodes. Blue filters are selectively coupled with the photodiodes. With provision of the blue filters, the glare sensor is able to discriminate red light from white light or yellow light. The output signals of the photodiodes with the blue filters and the photodiodes with no filters are used for detecting the direction and color of the light coming from the fore scene. With this, the glare sensor is capable of detecting forerunning cars, oppositely running cars and traffic lights.

REFERENCES:
patent: 4799768 (1989-01-01), Gahan
patent: 4891559 (1990-01-01), Matsumoto et al.
patent: 5235178 (1993-08-01), Hegyi

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