Automatic focus system with loss of correlation inhibit

Details Automatic focus system with loss of correlation inhibit Automatic focus system with loss of correlation inhibit

1976-10-07

1978-04-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250204, 354 25, G01F 120

Patent

active

040853209

ABSTRACT:
An automatic continuous focus system of the spatial image correlation type includes means for inhibiting movement of the primary lens if the correlation signal lacks a sufficient amount of variation.

REFERENCES:
patent: 3553455 (1971-01-01), Sato et al.
patent: 4010479 (1977-03-01), Nobusawa
patent: 4012634 (1977-03-01), Bouton et al.

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