Invention Grant
- Patent Title: Aperture stop and manufacturing method thereof
- Patent Title (中): 孔径光阑及其制造方法
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Application No.: US12342234Application Date: 2008-12-23
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Publication No.: US07880979B2Publication Date: 2011-02-01
- Inventor: Chia-Chun Chang
- Applicant: Chia-Chun Chang
- Applicant Address: TW Tu-Cheng, Taipei Hsien
- Assignee: Hon Hai Precision Industry Co., Ltd.
- Current Assignee: Hon Hai Precision Industry Co., Ltd.
- Current Assignee Address: TW Tu-Cheng, Taipei Hsien
- Agent Clifford O. Chi
- Main IPC: G02B9/00
- IPC: G02B9/00
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.
Public/Granted literature
- US20090303617A1 APERTURE STOP AND MANUFACTURING METHOD THEREOF Public/Granted day:2009-12-10
Information query
