Auto focus camera

Details Auto focus camera Auto focus camera

1989-08-10

1992-09-08

Perkey, W. B.

G03B 1336

Patent

active

051462621

ABSTRACT:
An auto focus camera produces a distance signal representative of the distance from the camera to an object being photographed. A first storage circuit stores comparative data to be compared with the distance signal, and a comparator circuit compares the distance signal with the comparative data. A second storage circuit stores lens extension amounts corresponding to the comparative data stored in the first storage circuit and outputs a lens extension amount corresponding to the specific comparative data selected by the comparator circuit. A focusing lens is positioned according to the output from the second storage circuit.

REFERENCES:
patent: 4423936 (1984-01-01), Johnson
patent: 4639110 (1987-01-01), Rinn et al.

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