Automatic focus system with oscillation inhibit circuit

Details Automatic focus system with oscillation inhibit circuit Automatic focus system with oscillation inhibit circuit

1976-10-07

1978-05-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

352140, 354 25, 356 4, G01J 120

Patent

active

040912752

ABSTRACT:
An automatic continuous focus system includes means for inhibiting movement of the primary lens unless each focus control signal within a predetermined time requires position correction in the same direction.

REFERENCES:
patent: 3572928 (1971-03-01), Decker
patent: 4010479 (1977-03-01), Nobusawa

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