Diaphragm blade for cameras and method of making the same

Details Diaphragm blade for cameras and method of making the same Diaphragm blade for cameras and method of making the same

1976-02-04

1977-09-06

Griffin, Donald A.

G03B 902

Patent

active

040472124

ABSTRACT:
A diaphragm blade for cameras comprising an opaque blade portion and a filter portion. This diaphragm blade is made by forming a blade portion by depositing a light intercepting substance on a sheet made of a filter material and then cutting the blade portion as including the filter portion off the sheet so that a high quality diaphragm blade having an integral filter may be obtained at a low cost.

REFERENCES:
patent: 2380216 (1945-07-01), Carter
patent: 3116673 (1964-01-01), Bogopolsky
patent: 3651748 (1972-03-01), Yoshiada
patent: 3846807 (1974-11-01), Sekine
patent: 3935581 (1976-01-01), Starp

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