Focus detecting device for detecting focus to a plurality of dif

Details Focus detecting device for detecting focus to a plurality of dif Focus detecting device for detecting focus to a plurality of dif

1992-06-29

1994-04-26

Gray, David M.

354409, 354474, G03B 1300

Patent

active

053071123

ABSTRACT:
This invention relates to a camera having a focus detecting device for independently detecting the focus states at a plurality of different distance measurement points. This invention provides in such camera a selection circuit for selecting the distance measurement points, and an indicating circuit for indicating the distance measurement points selected by the selection circuit, and provides an indicating device for preindicating a distance measurement point selected before the focus detecting operation and indicating the selected distance measurement point again when the selected distance measurement point is judged to be in focus by the focus detecting operation.

REFERENCES:
patent: 4534636 (1985-08-01), Sugawara
patent: 4545212 (1986-03-01), Kitaura et al.
patent: 4746947 (1988-05-01), Nakai
patent: 4812912 (1989-03-01), Iida et al.
patent: 4827303 (1989-05-01), Tsuboi
patent: 4882601 (1989-11-01), Taniguichi et al.
patent: 4994843 (1991-02-01), Kitazawa

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