Automatic camera focusing means

Optics: motion pictures – Removable film strip magazine type

Patent

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Details

352140, G03B 708

Patent

active

041033094

ABSTRACT:
A movie camera is provided with an automatic focusing adjustment mechanism which is responsive to a control signal which is generated by an ultrasonic range finder attached to the camera. The camera is automatically kept in focus as the distance of the subject from the camera is varied.

REFERENCES:
patent: 3185052 (1965-05-01), Baron
patent: 3274913 (1966-09-01), Biedermann
patent: 3723003 (1973-03-01), Vockenhuber
patent: 3871756 (1975-03-01), Stieringer

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