1992-12-04
1994-06-28
Gray, David M.
35419512, G03B 1300
Patent
active
053251458
ABSTRACT:
A camera having a focus detecting circuit for determining the state of focusing of an image of the object on an imaging plane and outputting information for moving an optical system, a memory for storing certain characteristics of the optical system, a control circuit for controlling the movement of the optical system on the basis of the output from the focus detecting circuit, and a correction circuit for correcting the output from the focus detecting circuit on the basis of the information stored in the memory.
REFERENCES:
patent: 4816860 (1989-03-01), Iida et al.
patent: 4825237 (1989-04-01), Hatase et al.
patent: 4885600 (1989-12-01), Iwasa et al.
patent: 5038163 (1991-08-01), Hirasawa
Canon Kabushiki Kaisha
Gray David M.
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