Camera system with auto-focusing device

Details Camera system with auto-focusing device Camera system with auto-focusing device

1990-07-30

1992-07-14

Adams, Russell E.

354400, G03B 1700, G03B 1336

Patent

active

051307324

ABSTRACT:
The present invention relates to a camera system having an auto-focusing device which carries out a so-called overlapped operation in which storing of a light signal by a focus sensor and calculation of a lens drive distance based on the stored value are performed while a lens is driven.
In the present invention, where a lens system mounted on the camera does not have a characteristic suitable to the overlapped operation, it is automatically detected and the overlapped operation is inhibited to prevent improper proceeding of the overlapped operation.

REFERENCES:
patent: 4671640 (1987-06-01), Akada et al.
patent: 4728980 (1988-03-01), Nakamura et al.
patent: 4786932 (1988-11-01), Akashi
patent: 4881094 (1989-11-01), Terui et al.
patent: 5053799 (1991-10-01), Akashi

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