Camera and range finder

Photography – Having wireless remote control circuit

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Details

396 96, 396100, 396106, G03B 1336

Patent

active

058483012

ABSTRACT:
A camera having a range finder in accordance with the present invention has a range finder comprising a CPU responsible for overall control, a range finding unit in which two light-receiving lenses, two sensor arrays, a switching circuit, and an integration circuit are incorporated, a light projection LED, and an AF IC. The switching circuit is used to change the destination of outputs of the sensor arrays to an A/D conversion circuit, whereby range finding is carried out in a passive AF mode. Moreover, the switching circuit is used to change the destination of outputs of one sensor array to the AF IC, whereby range finding is carried out in an active AF mode. According to the present invention, a compact and inexpensive camera having the ability to carry out range finding in two modes and capable of properly measuring a distance to any of objects lying in a wide area can be realized.

REFERENCES:
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patent: 4324464 (1982-04-01), Wick
patent: 4385817 (1983-05-01), Saito
patent: 4592638 (1986-06-01), Kaneda et al.
patent: 4672189 (1987-06-01), Tsunekawa et al.
patent: 4760418 (1988-07-01), Ishizaki et al.
patent: 5014080 (1991-05-01), Miyadera
patent: 5172155 (1992-12-01), Kosaka
patent: 5245398 (1993-09-01), Ludden
patent: 5666568 (1997-09-01), Saito et al.

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