发明名称 |
LIGHT QUANTITY ADJUSTMENT DEVICE AND IMAGING APPARATUS INCLUDING THE SAME |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light quantity adjustment device capable of suppressing peeling of laser-welded blade members and forming an exact exposure aperture. <P>SOLUTION: The light quantity adjustment device comprises: a substrate including an optical path aperture; the blade members for opening/closing the optical path aperture; a drive ring for driving the blade members; and driving means for rotating the drive ring with the optical path aperture as a center. Each of the blade members includes: a blade substrate which forms a throttle forming section for opening/closing the optical path aperture and a base end portion in which a pair of support shafts fitted to the substrate and the drive ring are disposed at a base end of the throttle forming section and does not transmit laser light; and an auxiliary substrate which includes support shafts stuck to the base end portion by laser welding and transmits laser light. In the auxiliary substrate, a groove section is formed to allow a solvent of the blade substrate dissolving by the laser to flow out to a welding region irradiated with laser on a front surface side opposed to the blade substrate. <P>COPYRIGHT: (C)2013,JPO&INPIT |
申请公布号 |
JP2013011713(A) |
申请公布日期 |
2013.01.17 |
申请号 |
JP20110143796 |
申请日期 |
2011.06.29 |
申请人 |
NISCA CORP |
发明人 |
HANAWA MASAHIRO;SENTODA HIROSHI |
分类号 |
G03B9/02;G03B9/06;G03B9/10;G03B9/22 |
主分类号 |
G03B9/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|