Camera

Details Camera Camera

1994-12-16

1997-07-15

Metjahic, Safet

Photography

Bellows objective camera

396344, G03B 1704

Patent

active

056492510

ABSTRACT:
In a camera of this invention, a lens barrel including a photographing lens built therein and an aperture opening formed in a camera body are coupled to each other by a light-shield unit in a light-tight manner. The light-shield unit comprises a bellows member made of rubber, sheet, cloth or other material capable of shielding light, which is folded to have top and bottom creases in the spiral form, and a spiral skeleton member comprising a linear spring and fitted to the inner side of a portion of the bellows member which defines the top crease. The skeleton member prevents a flexion of the bellows member, thereby preventing the bellows member from interfering with the flux of photographing light coming through the lens.

REFERENCES:
patent: 2109807 (1938-03-01), Tajima
patent: 2578111 (1951-12-01), Turner et al.
patent: 2886066 (1959-05-01), Hansen
patent: 3489071 (1970-01-01), Mohr et al.
patent: 3665832 (1972-05-01), Harvey
patent: 4095246 (1978-06-01), Kellner
patent: 4261658 (1981-04-01), Uchiyama et al.
patent: 4662734 (1987-05-01), Nishi
patent: 5014077 (1991-05-01), Yomogizawa et al.
patent: 5084721 (1992-01-01), Burnham

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