Automatic focus control system with backlash correcting arrangem

Details Automatic focus control system with backlash correcting arrangem Automatic focus control system with backlash correcting arrangem

1984-08-29

1985-08-27

Perkey, William B.

354286, G03B 310

Patent

active

045374872

ABSTRACT:
An automatic focus control system provided with a backlash correcting arrangement, which is free from influences arising from a backlash or play in a transmission system, and capable of quickly effecting the automatic focus control at a high accuracy.

REFERENCES:
patent: 4182563 (1980-01-01), Biber et al.
patent: 4322151 (1982-03-01), Weiss
patent: 4348089 (1982-09-01), Shenk
patent: 4470683 (1984-09-01), Nakajima
patent: 4472040 (1984-09-01), Kawabata
patent: 4477164 (1984-10-01), Nakai et al.
patent: 4477167 (1984-10-01), Ishikawa et al.
patent: 4483603 (1984-11-01), Metabl et al.

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