Camera

Details Camera Camera

1991-04-10

1992-07-28

Adams, Russell E.

354437, 354484, G03B 708

Patent

active

051344351

ABSTRACT:
A camera including shutter blades; a driving device which, upon receipt of electric energy, drives the shutter blades to open; an optical detecting device for optically detecting the operating state of the shutter blades; and a control circuit which controls the opening speed of the shutter blades by changing the amount of electric energy supplied to the driving device in response to the output of the optical detecting device.

REFERENCES:
patent: 4009866 (1977-03-01), Iwata et al.
patent: 4053907 (1977-10-01), Iwata et al.
patent: 4294527 (1981-10-01), Hashimoto et al.
patent: 4325614 (1982-04-01), Grimes
patent: 4354748 (1982-10-01), Grimes et al.
patent: 4360258 (1982-11-01), Hashimoto
patent: 4362372 (1982-12-01), Kiesel
patent: 4514075 (1985-04-01), Negishi et al.
patent: 4557573 (1985-12-01), Johnson et al.
patent: 4572645 (1986-02-01), Yoshida et al.

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