Aperture stop and manufacturing method thereof

Details Aperture stop and manufacturing method thereof Aperture stop and manufacturing method thereof

2011-02-01

2011-02-01

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Lens

With light limiting or controlling means

C359S738000

Reexamination Certificate

active

07880979

ABSTRACT:
An aperture stop includes a body and a black film. The body is stainless steel and the black film is disposed on at least two corresponding ends of the body. A manufacturing method of the aperture stop is also provided. The aperture stop is produced using the characteristics of the stainless steel body.

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patent: 7702198 (2010-04-01), Shibayama
patent: 2006/0268243 (2006-11-01), Woo et al.

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