Focus control system for interchangeable adjustable focus lenses

Details Focus control system for interchangeable adjustable focus lenses Focus control system for interchangeable adjustable focus lenses

1978-04-20

1980-01-08

Hix, L. T.

G03B 1322

Patent

active

041825632

ABSTRACT:
A camera having an automatic focus control system for an adjustable focus lens is provided with a demountable adjustable or fixed focus lens that incorporates a device having an adjustable or fixed focus lens characteristic that causes said automatic focus control system to vary in accordance with said lens characteristic. The device is removable with the lens and means are provided for interconnecting said device with said control system when the lens is mounted on said camera.

REFERENCES:
patent: 2926579 (1960-03-01), Gebele
patent: 3522764 (1970-08-01), Biber
patent: 3882520 (1975-05-01), Kamp et al.
patent: 3935581 (1976-01-01), Starp
patent: 3958117 (1976-05-01), Stauffer

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