Invention Grant
- Patent Title: Synthetic silica glass optical component and process for its production
- Patent Title (中): 合成石英玻璃光学元件及其生产工艺
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Application No.: US10283055Application Date: 2002-10-30
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Publication No.: US08402786B2Publication Date: 2013-03-26
- Inventor: Yoshiaki Ikuta , Shinya Kikugawa , Akio Masui , Noriaki Shimodaira , Shuhei Yoshizawa
- Applicant: Yoshiaki Ikuta , Shinya Kikugawa , Akio Masui , Noriaki Shimodaira , Shuhei Yoshizawa
- Applicant Address: JP Tokyo
- Assignee: Asahi Glass Company, Limited
- Current Assignee: Asahi Glass Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP10-19751 19980130
- Main IPC: C03B25/00
- IPC: C03B25/00
Abstract:
A process for producing a synthetic silica glass optical component which contains at least 1×1017 molecules/cm3 and has an OH concentration of at most 200 ppm and substantially no reduction type defects, by treating a synthetic silica glass having a hydrogen molecule content of less than 1×1017 molecules/cm3 at a temperature of from 300 to 600° C. in a hydrogen gas-containing atmosphere at a pressure of from 2 to 30 atms.
Public/Granted literature
- US20030051507A1 Synthetic silica glass optical component and process for its production Public/Granted day:2003-03-20
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