Optical object detection system incorporating fiber optic coupli

Details Optical object detection system incorporating fiber optic coupli Optical object detection system incorporating fiber optic coupli

1990-02-06

1994-03-01

Wallace, Linda J.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 4, 340435, 2502082, 2502083, 250561, 2505781, 250232, G01C 300, B60Q 100, H01J 4014

Patent

active

052912612

ABSTRACT:
A system (4) for use in an automobile (2) for the detection of objects comprising: a light source (6); a plurality of spaced transmitter ports (10, 12) for respectively transmitting light to a plurality of fields of illumination (18, 20); an optical fiber coupling the light source to the transmitter ports; a plurality of receiver ports (10, 12) embracing respectively a plurality of fields of reception (34, 36) each having an area of overlap (38, 40, 42, 44) with each of the plurality of fields of illumination so as to receive light transmitted from one of the transmitter ports and reflected by an object present in an area of overlap; a receiver (22) for receiving light and for producing a signal representative thereof; an optical fiber (24) coupling the receiver ports to the receiver; and processing means (52) for sequentially activating each of the transmitter ports with each of the receiver ports, and for processing the signal produced by the receiver in response to each activation to detect the presence of an object in each of the areas of overlap.

REFERENCES:
patent: 3327584 (1967-06-01), Kissinger
patent: 4515479 (1985-05-01), Pryor
patent: 4582424 (1986-04-01), Kawabata
patent: 4634272 (1987-01-01), Endo
patent: 4653905 (1987-03-01), Farrar et al.
patent: 4692611 (1987-09-01), Hoogenboom
patent: 4740806 (1988-04-01), Takehana
patent: 4752799 (1988-06-01), Stauffer
patent: 4766323 (1988-08-01), Franklin et al.
patent: 4818887 (1989-04-01), Weishaupt et al.

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