Obstacle detecting system having a plurality of spaced laser dio

Details Obstacle detecting system having a plurality of spaced laser dio Obstacle detecting system having a plurality of spaced laser dio

1992-09-28

1994-06-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250561, 340903, G01B 1124

Patent

active

053212550

ABSTRACT:
An obstacle detecting system comprises an optical unit having a plurality of spaced laser diodes each of which emits a laser beam, a convex lens spaced from the optical unit in the frontward direction thereof and establishing a combined beam after each the laser beam passes through the convex lens, and a driving device for adjusting the relationship between each the laser beam and the convex lens. Such structure enabling the detection of the obstacle such as a vehicle in such manner that the obstacle is fallen within the width of the combined beam by adjusting the relationship between each the laser beam and the convex lens.

REFERENCES:
patent: 2783450 (1957-02-01), Jackson
patent: 3152317 (1964-10-01), Mayer
patent: 3921749 (1975-11-01), Kawada
patent: 4558215 (1985-10-01), Kaneko et al.
patent: 5026153 (1991-10-01), Suzuki et al.

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