Invention Grant
US07934877B2 Diaphragm blade, method of manufacturing the same, and light quantity controller having the same
有权
隔膜刀片及其制造方法以及具有该隔膜片的光量控制器
- Patent Title: Diaphragm blade, method of manufacturing the same, and light quantity controller having the same
- Patent Title (中): 隔膜刀片及其制造方法以及具有该隔膜片的光量控制器
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Application No.: US12018102Application Date: 2008-01-22
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Publication No.: US07934877B2Publication Date: 2011-05-03
- Inventor: Chikara Aoshima , Eriko Namazue , Makoto Miyawaki
- Applicant: Chikara Aoshima , Eriko Namazue , Makoto Miyawaki
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc IP Division
- Priority: JP2007-044038 20070223; JP2007-102062 20070409; JP2007-173088 20070629
- Main IPC: G03B9/02
- IPC: G03B9/02 ; G02B9/08 ; H04N5/238
Abstract:
A diaphragm blade includes a light-shielding, thin-plate blade base made of laser absorptive resin to regulate an aperture, and a first shaft portion made of laser transmissive resin and provided on one surface of the blade base. The first shaft portion includes a cylindrical member which is welded to the protruding weld portion, a protruding weld portion integrally formed with the blade base, and a recess formed at the back side of the protruding weld portion. The cylindrical member has a first recess defined at one end thereof near the blade base and coming into contact with the protruding weld portion, and a second recess defined at the other end. A contact surface of the protruding weld portion is melted with laser beam transmitted through the cylindrical member, whereby the protruding weld portion is welded to the cylindrical member.
Public/Granted literature
- US20080205880A1 DIAPHRAGM BLADE, METHOD OF MANUFACTURING THE SAME, AND LIGHT QUANTITY CONTROLLER HAVING THE SAME Public/Granted day:2008-08-28
Information query
