Object detection system

Details Object detection system Object detection system

1997-05-12

1999-03-02

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging to a point with one projected beam

356 313, 2502061, G01C 300, G01C 2102

Patent

active

058778497

ABSTRACT:
The present invention provides for a detection system for detecting an object, comprising optical elements including a radiation source of an electromagnetic nature and at least one detector detecting radiation reflected off the object from the radiation source. The system is configured so that trigonometric relationships are established between all or selected of the optical elements and the object. Using the angle of radiation from the radiation source and the angle of reflection into the detector, the system determines the range or distance, and/or velocity of the object relative to the system. While the use of one detector is sufficient to provide an angle measurement for the system to determine the object range and/or velocity, an additional detector may be used to increase accuracy and flexibility. The detectors of the system may have be normal-looking, or side-looking detectors, either of which detects intensity variations. Each detector uses a mask and a baffle in accordance with the concept of constructive occlusion, which improves the response characteristics of the detector. The mask occupies a predetermined position within the detector to enable the detector to provide a tailored response profile. The baffle is configured within the detector to partition a diffusely-reflective cavity within the detector. An LED array or a scanning light assembly may be used with the system as the radiation source.

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