Automatic focus control system

Details Automatic focus control system Automatic focus control system

1983-07-20

1985-09-03

Hix, L. T.

354409, G03B 1318

Patent

active

045388920

ABSTRACT:
This specification discloses an energizing control of a drive element for driving a motor or the like which drives a focusing lens. The energization is controlled on the basis of the detection of whether or not the position of the focusing lens is within the quasi-in-focus state, and when the continuation of the quasi-in-focus state for a predetermined time period or more is detected, energization of the driving element is stopped.

REFERENCES:
patent: 4091275 (1978-05-01), Wilwerding

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