发明授权
US06744458B2 Internally marked quartz glass, quartz glass substrate for optical member, and marking method
有权
内标石英玻璃，光学元件用石英玻璃基板及标记方法
- 专利标题： Internally marked quartz glass, quartz glass substrate for optical member, and marking method
- 专利标题（中）： 内标石英玻璃，光学元件用石英玻璃基板及标记方法
-
申请号： US10242354申请日： 2002-09-13
-
公开(公告)号： US06744458B2公开(公告)日： 2004-06-01
- 发明人: Motoyuki Yamada , Koji Yamaga
- 申请人： Motoyuki Yamada , Koji Yamaga
- 优先权： JP2001-277741 20010913
- 主分类号： B41J2435
- IPC分类号： B41J2435
摘要：
In a quartz glass, a mark is internally made such that a retardation generated in close proximity to the end of the mark is up to 20 nm. The internally marked quartz glass in which internal marks are created without sacrificing optical precision finds use as quartz glass substrates for optical members in the electronic industry.
公开/授权文献
信息查询
