Switching assembly for focussing, photosensitive elements of a c

Details Switching assembly for focussing, photosensitive elements of a c Switching assembly for focussing, photosensitive elements of a c

1982-03-22

1983-09-13

Perkey, William B.

G03B 300

Patent

active

044038437

ABSTRACT:
For use with a camera which is adapted for use with at least two interchangeable lenses having different brightness levels, a switching assembly is provided to enable one of at least two focussing, photosensitive elements each associated with a different one of the lenses. The switching assembly comprises first means normally assuming a first predetermined position in which one of the elements is enabled for operation, said one element being effective to detect an in-focus position when a corresponding interchangeable lens is mounted, and second means adapted to be forcibly displaced from a position in which said one element is enabled to another position in which the other element is enabled for operation.

REFERENCES:
patent: 4246476 (1981-01-01), Stauffer
patent: 4269497 (1981-05-01), Ishizaka et al.

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