Invention Grant
US08206830B2 Glass material for mold pressing and method for manufacturing optical glass element 有权
用于模压的玻璃材料和用于制造光学玻璃元件的方法

  • Patent Title: Glass material for mold pressing and method for manufacturing optical glass element
  • Patent Title (中): 用于模压的玻璃材料和用于制造光学玻璃元件的方法
  • Application No.: US12295620
    Application Date: 2007-03-28
  • Publication No.: US08206830B2
    Publication Date: 2012-06-26
  • Inventor: Xuelu ZouYasuhiro Fujiwara
  • Applicant: Xuelu ZouYasuhiro Fujiwara
  • Applicant Address: JP Tokyo
  • Assignee: Hoya Corporation
  • Current Assignee: Hoya Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Sughrue Mion, PLLC
  • Priority: JP2006-100833 20060331
  • International Application: PCT/JP2007/056675 WO 20070328
  • International Announcement: WO2007/114172 WO 20071011
  • Main IPC: B32B17/06
  • IPC: B32B17/06 C03B23/02
Glass material for mold pressing and method for manufacturing optical glass element
Abstract:
A glass material for mold pressing, comprising a core portion comprised of an optical glass with a degree of abrasion FA of 200 or higher and a covering portion comprised of a second glass covering at least a portion of the surface of said core portion. A method for manufacturing an optical glass element, wherein a glass material that has been preformed to a prescribed shape is heat softened and press molded with a pressing mold and the outer perimeter portion of the molded product obtained is removed by mechanical processing. The above-mentioned glass material for mold pressing is used as the glass material. To provide a means whereby an optical element does not bear scratches on optically functional surfaces through contact during handling after the press molding of press molded glass products despite being comprised of a glass material with a high degree of abrasion, and a means whereby even when scratched, the function of the optical element finally obtained is unaffected.
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