Range discriminating optical sensor having a wide angle lens...

Details Range discriminating optical sensor having a wide angle lens... Range discriminating optical sensor having a wide angle lens...

2006-08-01

2006-08-01

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S216000

Reexamination Certificate

active

07084385

ABSTRACT:
A range discriminating optical sensor for use in a vehicle safety system is provided. The range discriminating sensor is designed to create a small depth of field such that objects at a range outside of the depth of field are eliminated from the image. Generally, the optical sensor uses a large aperture to limit the depth of field. An electronic imaging element is used to detect the image projected by the lens. The electronic imaging element may have a small pixel size which further reduces the depth of field. A signal processor can be used to determine the distance from the image sensor with objects with the selected depth of field appearing in focus and those outside of the depth of field appearing out of focus.

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patent: WO-02/08685 (2002-01-01), None
patent: WO-03/016820 (2003-02-01), None

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