Three operational mode camera

Details Three operational mode camera Three operational mode camera

1980-01-17

1981-03-03

Griffin, Donald A.

354 38, G03B 708, G03B 1720

Patent

active

042537568

ABSTRACT:
A camera having an automatic exposure control mechanism wherein aperture priority, shutter speed priority and manual modes of operation can be set without the possibility of the switching mechanism being set to inoperable positions. The aperture ring of the camera lens is provided with a protrusion which interlocks with a corresponding protrusion on a ring of the camera body through which aperture information is transmitted. The shutter dial of the camera is provided on its reverse side with plural semicircular conductive pads which selectively engage with contact brushes as the dial is rotated to set the various modes of operation. A variable resistance contact portion is also provided on the dial for manually setting the shutter speed.

REFERENCES:
patent: 3882511 (1975-05-01), Tsujimoto et al.
patent: 4037235 (1977-07-01), Ueda
patent: 4089014 (1978-05-01), Ueda et al.
patent: 4173404 (1979-11-01), Akasaka

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