Signal forming apparatus

Details Signal forming apparatus Signal forming apparatus

1999-01-26

2000-08-15

Perkey, W. B.

Photography

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

Having auxiliary illumination

G03B 1336

Patent

active

061048798

ABSTRACT:
A signal forming apparatus forms signals related to distances by projecting light patterns in a plurality of target directions and receiving reflected light resulting from the projected light patterns. The device includes a first light emitting part which projects a light pattern in a first target direction, and a second light emitting part which projects a light pattern which differs in shape from the light pattern of the first light emitting part in a second target direction different from the first target direction.

REFERENCES:
patent: 4843415 (1989-06-01), Matsui et al.

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