Apparatus for detecting distance to an object

Details Apparatus for detecting distance to an object Apparatus for detecting distance to an object

1986-02-03

1987-09-01

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354402, 354408, G01C 308, G03B 1320

Patent

active

046905499

ABSTRACT:
An apparatus for detecting distance to an object is disclosed, which includes a taking or imaging lens for collecting a light from an object, a first lens device for forming the light from the object and through the taking lens to a parallel light bundle when the object is positioned at the focal point of the taking lens, a second lens device for focussing the light through the first lens device, a light sensing device for receiving the light through the second lens device, a separating device for separating the light from the first lens device into at least two bundles of light which are shifted perpendicularly to the optical axis of the second lens device, and a detecting device for detecting the displacement of the multiple images on the light sensing device caused by the separated bundles of light by the separating device when the object is not at the focal point of the taking lens and for generating an output varying with the distance to the object.

REFERENCES:
patent: 3227033 (1966-01-01), Whyte
patent: 3618498 (1971-11-01), Eppinger
patent: 4253752 (1981-03-01), Ichihara
patent: 4283138 (1981-08-01), Lai
patent: 4311383 (1982-01-01), Ohtsubo
patent: 4346970 (1982-08-01), Kawabata et al.
patent: 4360256 (1982-11-01), Grassl

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