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특허 상세정보

High strength ophthalmic lens

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G02C-007/02   
미국특허분류(USC) 351/159 ; 351/166 ; 351/177 ; 65/30E
출원번호 US-0606033 (1975-08-20)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 15  인용 특허 : 0
초록

An ophthalmic glass lens can be prepared by exposing an alkali metal silicate glass to an ion exchange process in which the glass is chemically strengthened by an exchange of potassium ions for sodium ions in the surface layer of the lens at a temperature either above or below the strain point of the glass. The glasses prepared are essentially free of alumina, have adequate strength and substantially increased depth of pentration of the neutral zone even when up to about 6 percent lime is utilized in the preparation of the glass. The effect of lime as a ...

대표
청구항

A chemically-strengthened ophthalmic glass lens having a compressively-stressed ion-exchanged surface zone that is at least 60 microns in depth, said lens being formed from a silicate glass comprising by weight about 3 to about 11 percent sodium oxide, about 7 to about 15 percent potassium oxide, up to about 5 percent of other alkali metal oxides, about 12 to about 20 percent of a total of sodium and potassium oxides and other alkali metal oxides, a minimum of 3 to about 6 percent of calcium oxide, the calcium oxide being balanced by an amount of about 3...

이 특허를 인용한 특허 피인용횟수: 15

  1. McGinnis, Peter B.; Hofmann, Douglas. Composition for high performance glass fibers and fibers formed therewith. USP2012088252707.
  2. McGinnis, Peter Bernard; Hofmann, Douglas A.. Composition for high performance glass fibers and fibers formed therewith. USP2012128338319.
  3. Hofmann, Douglas A.; McGinnis, Peter B.. Composition for high performance glass high performance glass fibers and articles therefrom. USP2013108563450.
  4. Hofmann, Douglas A.; McGinnis, Peter B.. Composition for high performance glass, high performance glass fibers and articles therefrom. USP2013118586491.
  5. Rinehart Dale W. (Natrona Heights PA). Ion exchange strengthening of soda-lime-silica glass. USP1980034192689.
  6. McGinnis, Peter B.; Hofmann, Douglas A.. Method of manufacturing S-glass fibers in a direct melt operation and products formed there from. USP2015119187361.
  7. McGinnis, Peter B.; Hofmann, Douglas A.. Method of manufacturing S-glass fibers in a direct melt operation and products formed therefrom. USP2017079695083.
  8. McGinnis, Peter B.; Hofmann, Douglas; Baker, David J.; Wingert, John W.; Bemis, Byron. Method of manufacturing S-glass fibers in a direct melt operation and products formed therefrom. USP2015129206068.
  9. Hofmann, Douglas A.; McGinnis, Peter B.. Method of manufacturing high performance glass fibers in a refractory lined melter and fiber formed thereby. USP2013018341978.
  10. McGinnis, Peter Bernard; Hofmann, Douglas; Baker, David J.; Wingert, John W.; Bemis, Byron. Method of manufacturing high strength glass fibers in a direct melt operation and products formed there from. USP2017059656903.
  11. Sheldon, Eli; Byun, Edward; Lintz, Michael; Gorasia, Jayesh; Cherney, Raphael. Non-destructive stress profile determination in chemically tempered glass. USP2014108873028.
  12. Tokunaga Shinobu (Yono JPX) Shiina Yuichi (Warabi JPX). Optical glass for optical paths. USP1981104297141.
  13. Kodama Hiroyuki (Kawasaki JPX) Mangyo Katsumi (Yokohama JPX) Ichimura Takeo (Tokyo JPX). Optical light weight glass. USP1989034812423.
  14. LaCourse William C. (Alfred NY) Akhtar Maysood (Wellsville NY). Process for strengthening glass. USP1989104872896.
  15. Krashkevich David (Duryea PA) Hayden Yuiko T. (Duryea PA). Strengthenable, high non-nd lanthanoid-containing glasses. USP1991085039631.