Apparatus for changing the size of the photographing aperture in

Details Apparatus for changing the size of the photographing aperture in Apparatus for changing the size of the photographing aperture in

1993-02-12

1994-08-02

Gray, David M.

G03B 1702

Patent

active

053350316

ABSTRACT:
An apparatus for changing a size of an aperture which defines a photographing aperture in a camera includes a pair of light intercepting plates which can cover a predetermined width of end edges of the aperture to partly intercept light incident thereupon, and an association mechanism which moves the light intercepting plates in association with each other between a retracted position in which the aperture is fully opened and a restricted-size position in which the aperture is partly intercepted. The association mechanism is comprised of a shaft secured to a camera body, and a connecting rotatable member which is rotatably mounted to the shaft. The connecting rotatable member is connected at one end thereof to one of the light intercepting plates and at the other end thereof to the other light intercepting plate, respectively, so that the rotation of the connecting rotatable member causes the associated movement of the light intercepting plates between the retracted position and the restricted-size position.

REFERENCES:
patent: 5010357 (1991-04-01), Misawa

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