Invention Grant
US08012896B2 Optical glass, preform for precision press molding, method for manufacturing preform for precision press molding, optical element, and method for manufacturing optical element
有权
光学玻璃，精密加压成型用预成型体，精密加压成形用预成型体的制造方法，光学元件以及光学元件的制造方法
- Patent Title: Optical glass, preform for precision press molding, method for manufacturing preform for precision press molding, optical element, and method for manufacturing optical element
- Patent Title (中): 光学玻璃，精密加压成型用预成型体，精密加压成形用预成型体的制造方法，光学元件以及光学元件的制造方法
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Application No.: US12238771Application Date: 2008-09-26
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Publication No.: US08012896B2Publication Date: 2011-09-06
- Inventor: Yasuhiro Fujiwara
- Applicant: Yasuhiro Fujiwara
- Applicant Address: JP Tokyo
- Assignee: Hoya Corporation
- Current Assignee: Hoya Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2007-251498 20070927
- Main IPC: C03C3/068
- IPC: C03C3/068 ; C03C3/062 ; C03C3/064 ; C03C3/066 ; C03B21/00 ; C03B23/00 ; C03B25/00 ; C03B27/00 ; C03B29/00
Abstract:
The present invention relates to an optical glass having optical constants in the form of a refractive index nd of 1.70 or higher and an Abbé number nud of 50 or higher, a preform for precision press molding comprised of this glass, an optical element comprised of this glass, and methods for manufacturing the preform and the optical element.
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