Range finder

Details Range finder Range finder

1996-10-25

1998-09-22

Perkey, W. B.

Photography

With exposure objective focusing means, focusing aid, or...

Having auxiliary illumination

356 304, G03B 1336, G01C 308

Patent

active

058128930

ABSTRACT:
A range finder in accordance with the present invention is a range finder having a light-emitting device and light-receiving device and a printed-circuit board on which electrical parts are mounted. The light-emitting device is mounted on a front face of the printed-circuit board, and the light-receiving device is mounted on the back face thereof. The mounted sides of the light-emitting device and light-receiving device are substantially opposed to each other with the printed-circuit board between them. The printed-circuit board is formed with an opaque member and intercepts harmful light, preventing it from falling directly on the light-receiving device from the light-emitting device.

REFERENCES:
patent: 4313654 (1982-02-01), Matsui et al.
patent: 5488468 (1996-01-01), Kawanishi et al.

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