Shutter blades for increasing uniformity of oblique incident lig

Details Shutter blades for increasing uniformity of oblique incident lig Shutter blades for increasing uniformity of oblique incident lig

1994-04-18

1996-03-26

Blankenship, Howard B.

Television

Special applications

Simulator

354230, 348366, G03B 940

Patent

active

055025250

ABSTRACT:
In a photographing device of the kind having a plurality of blades disposed one after another in an overlapping manner in the direction of the optical axis of a photo-taking lens, with an exposing aperture part for high luminance included in an exposing aperture hole formed in each of the blades, and performing exposure control for an exposure surface by driving and moving these blades relative to each other in the direction of traversing the optical axis, the fore end positions, relative to the optical axis, of the exposing aperture parts for high luminance included in the exposing aperture holes formed respectively in the blades are arranged to be located farther away from the optical axis accordingly as the blades are located farther away from the exposure surface.

REFERENCES:
patent: 4058817 (1977-11-01), Johnson et al.

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