Method of driving multiple flash rangefinder

Details Method of driving multiple flash rangefinder Method of driving multiple flash rangefinder

1989-05-22

1990-09-04

Perkey, W. B.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 1, 356 4, G03B 300, G01C 308

Patent

active

049548611

ABSTRACT:
A method of driving the light-emitting devices of a multiple flash rangefinder for use in an autofocus camera in which the rangefinder includes a light-receiving device and an arithmetic processing unit that calculates the distance to the subject from the output signal from the light-receiving device. The light-emitting devices are lit up successively one at a time in such a way that each device emits momentarily and the series of operations is repeated several times.

REFERENCES:
patent: 4688919 (1987-08-01), Ogawa et al.
patent: 4733062 (1988-03-01), Horikawa

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