Apparatus for optically sensing obstacles in front of vehicles

Details Apparatus for optically sensing obstacles in front of vehicles Apparatus for optically sensing obstacles in front of vehicles

1996-08-15

1998-05-26

Pham, Hoa Q.

Optics: measuring and testing

By polarized light examination

With light attenuation

356 401, 180169, 359205, G01B 1124, G01C 308, G02B 2608

Patent

active

057575010

ABSTRACT:
An apparatus for optically sensing obstacles in front of vehicles within a monitored sector, comprising a scanner disposed on the vehicle, which moves a narrowly focused beam of light pulses as well as the viewing direction of a light receiver in a rotation plane that is essentially horizontal, and an analyzing device which measures the profile of obstacles in the rotation plane from the angle and transit time of the pulses, is characterized in that the beam is moved in a 360.degree. circle and in that at least one planar mirror is disposed next to the scanner, in the rotation plane, outside the monitored sector, so as to reflect the beam into the monitored sector.

REFERENCES:
patent: 4787748 (1988-11-01), Rioux
patent: 5073819 (1991-12-01), Gates et al.
patent: 5194734 (1993-03-01), Whittaker et al.
patent: 5625447 (1997-04-01), Kikuchi et al.

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