Automatic focusing camera

Details Automatic focusing camera Automatic focusing camera

1980-01-25

1982-04-06

Hix, L. T.

Optics: motion pictures

Removable film strip magazine type

354197, 354286, 352140, G03B 310

Patent

active

043233031

ABSTRACT:
An automatic focusing camera and interchangeable lens in which the camera body is provided with an automatic focusing control circuit, and an electric motor, also provided in the camera body and which operates in response to the output of the circuit, produces rotary motion which is transmitted to a lens through a mounting device for driving the lens to a point of correct focalization. For the smallest of three types of interchangeable lenses, the motor in the camera body is used directly to drive the lens. For a second larger type of interchangeable lens, a separate electric motor is provided with the lens itself. The separate motor is provided with control signals through contacts provided on the camera body and lens mount which are coupled to the control circuit in the camera body. In a third type of lens, the second electric motor and its battery are provided in an separate casing which is detachably mounted to the casing of the lens.

REFERENCES:
patent: 3940777 (1976-02-01), Komine
patent: 4178087 (1979-12-01), Shenk

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