Systems and methods for object detection using beam widening opt

Details Systems and methods for object detection using beam widening opt Systems and methods for object detection using beam widening opt

1992-09-30

1994-05-17

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

180169, 356 1, 356141, G01C 308, G01C 300, G01B 1126, B60T 716

Patent

active

053132629

ABSTRACT:
In exemplary embodiments, a diffraction grating is placed in the beam path of the generated light source. The grating expands the beam's field of view by distributing the transmitted radiation into plural sub-fields. Sub-fields associated with distant objects are set to a greater intensity to ensure reflection of the sub-fields back to the receiver. Sub-fields directed to closer objects have a lesser intensity to avoid detection of false objects.

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"A Collision-Avoidance Warning System Using Laser Radar", by Kiyoshi Minami et al, Copyright 1988--Society of Automotive Engineers, Inc., pp. 1-7.
"Development of a Laser Radar System for Automobiles", by T. Yanagisawa et al, pp. 73-85.

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