Invention Grant
US08703295B2 Glass material for mold pressing, method for manufacturing same, and method for manufacturing optical glass element
失效
用于模压的玻璃材料,其制造方法以及制造光学玻璃元件的方法
- Patent Title: Glass material for mold pressing, method for manufacturing same, and method for manufacturing optical glass element
- Patent Title (中): 用于模压的玻璃材料,其制造方法以及制造光学玻璃元件的方法
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Application No.: US12295610Application Date: 2007-03-28
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Publication No.: US08703295B2Publication Date: 2014-04-22
- Inventor: Xuelu Zou , Yasuhiro Fujiwara , Hiroshi Kohno , Kohichiro Shiraishi
- Applicant: Xuelu Zou , Yasuhiro Fujiwara , Hiroshi Kohno , Kohichiro Shiraishi
- Applicant Address: JP Tokyo
- Assignee: Hoya Corporation
- Current Assignee: Hoya Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2006-096787 20060331
- International Application: PCT/JP2007/056669 WO 20070328
- International Announcement: WO2007/114170 WO 20071011
- Main IPC: B32B17/06
- IPC: B32B17/06 ; B32B15/04

Abstract:
A glass material for mold pressing, comprised of a core portion and a covering portion. In one embodiment, the core portion comprises a multicomponent optical glass containing at least one readily reducible component selected from among W, Ti, Bi, and Nb and the covering portion comprises a multicomponent glass containing none or a lower quantity of the readily reducible component than is contained in the core portion. In another embodiment, the core portion comprises a fluorine-containing multicomponent optical glass, and the covering portion comprises a multicomponent glass containing none or a lower quantity of fluorine than is contained in the core portion. A method for manufacturing an optical glass element employing the above glass material that comprises heat softening a glass material that has been preformed into a prescribed shape, and conducting press molding with a pressing mold.
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