Invention Grant
US08657510B2 Aperture stop mechanism which drives two aperture blades and adjusts an aperture area of light passage opening into which light for imaging is introduced
有权
孔径停止机构，其驱动两个光圈叶片并调节光通路开口的孔径，其中引入用于成像的光
- Patent Title: Aperture stop mechanism which drives two aperture blades and adjusts an aperture area of light passage opening into which light for imaging is introduced
- Patent Title (中): 孔径停止机构，其驱动两个光圈叶片并调节光通路开口的孔径，其中引入用于成像的光
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Application No.: US13512244Application Date: 2010-11-26
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Publication No.: US08657510B2Publication Date: 2014-02-25
- Inventor: Hideaki Muramatsu , Takashi Ono
- Applicant: Hideaki Muramatsu , Takashi Ono
- Applicant Address: JP Yokohama-shi
- Assignee: JVC KENWOOD Corporation
- Current Assignee: JVC KENWOOD Corporation
- Current Assignee Address: JP Yokohama-shi
- Agency: Venable LLP
- Agent Michael A. Sartori; Christopher B. Tokarczyk
- Priority: JP2009-270459 20091127
- International Application: PCT/JP2010/006923 WO 20101126
- International Announcement: WO2011/065017 WO 20110603
- Main IPC: G03B9/02
- IPC: G03B9/02
Abstract:
In an aperture stop mechanism, two aperture blades are arranged so as to overlap each other and form a single light passage opening into which light utilized in imaging is introduced with the respective edge portions of the two aperture blades. A drive mechanism drives the two aperture blades in directions different from each other, whereby the aperture area of the light passage opening is changed within a predetermined range. When the two aperture blades are located at a minimum aperture position where the aperture area of the light passage opening is minimum within the predetermined range, the two aperture blades are provided so that the single light passage opening surrounded by boundaries including eight straight lines is constituted of the respective edge portions of the two aperture blades.
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