Blade type focal plane shutter

Details Blade type focal plane shutter Blade type focal plane shutter

1980-09-18

1981-10-20

Griffin, Donald A.

354249, 354250, G03B 940, G03B 908

Patent

active

042957265

ABSTRACT:
A blade type focal plane shutter comprising a plurality of auxiliary shutter blades which are pivoted on the side of an exposure aperture and can move between the unfolded position and folded position, a main shutter blade for forming an exposure slit which is rotatably supported on two of the auxiliary shutter blades and an actuating member which is pin-slot connected to the auxiliary shutter blades to move the auxiliary shutter blades and main shutter blade between the unfolded position and folded position so that the entire shutter can be made small and can be manufactured at a low cost.

REFERENCES:
patent: 3810223 (1974-05-01), Kitai et al.
patent: 4054891 (1977-10-01), Onda et al.
patent: 4054892 (1977-10-01), Nakagawa et al.
patent: 4227793 (1980-10-01), Arai

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