Electro-optical distance measuring device

Details Electro-optical distance measuring device Electro-optical distance measuring device

1984-12-21

1986-09-16

Griffin, Donald A.

Optics: measuring and testing

Range or remote distance finding

With photodetection

G01C 308

Patent

active

046119116

ABSTRACT:
Distance measurement apparatus comprises a collimating optical system and an optical path divider. The collimating optical system contains an objective lens, a focusing lens and an eye-piece arranged in the named order. The optical path divider is disposed between the objective lens and the focusing lens. A reflecting member is provided on the optical path branched by the optical path divider. The reflecting member has first and second reflecting surfaces which intersect each other at right angles. A light source supplies a beam of transmission light to the first reflecting surface. A photo receptor receives the beam of light reflected by the second reflecting surface. An auxiliary lens is provided between the optical path divider and the reflecting member and cooperates with the objective lens to form an afocal system.

REFERENCES:
patent: 4165936 (1979-08-01), Eisenring et al.
patent: 4504143 (1985-03-01), Heinze et al.

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