JPS57106534A - Production of optical glass articles - Google Patents

Production of optical glass articles

Info

Publication number
JPS57106534A
JPS57106534A JP17994180A JP17994180A JPS57106534A JP S57106534 A JPS57106534 A JP S57106534A JP 17994180 A JP17994180 A JP 17994180A JP 17994180 A JP17994180 A JP 17994180A JP S57106534 A JPS57106534 A JP S57106534A
Authority
JP
Japan
Prior art keywords
glass
soln
org
contg
heated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17994180A
Other languages
Japanese (ja)
Inventor
Shiro Kurosaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP17994180A priority Critical patent/JPS57106534A/en
Priority to GB8127366A priority patent/GB2086877B/en
Priority to DE19813137045 priority patent/DE3137045A1/en
Publication of JPS57106534A publication Critical patent/JPS57106534A/en
Pending legal-status Critical Current

Links

Landscapes

  • Glass Melting And Manufacturing (AREA)
  • Surface Treatment Of Glass (AREA)
  • Glass Compositions (AREA)

Abstract

PURPOSE: To produce a glass blank material having three-dimensional refractive index distributions inexpensively with high quality by using the porous glass obtd. by treating an aq. soln. contg. silicic acid and subjecting this to molecular stuffing.
CONSTITUTION: An aq. soln. contg. silicic acid is prepd. and if necessary, an inorg. or org. compound is contained therein. This is neutralized to control its pH to about 4W6 and is geled. The gel body consisting of the porous silica by this gelation as its skeleton is subjected to leaching in a temp. range from room temp. to boiling point by using alcohol, ketone, an org. acid, etc., whereby salts and the like which are excess compounds are removed. Thence, the porous glass is immersed in an aq. CsNo3 soln. Thereafter, the pressure is reduced slowly to allow the org. compound to evaporate and further the glass is heated in a vacuum to decompose the compounds to oxide. It is then heated to high temps., and fine pores are crushed under the effect of surface tension, whereby the transparent glass is made.
COPYRIGHT: (C)1982,JPO&Japio
JP17994180A 1980-09-17 1980-12-18 Production of optical glass articles Pending JPS57106534A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP17994180A JPS57106534A (en) 1980-12-18 1980-12-18 Production of optical glass articles
GB8127366A GB2086877B (en) 1980-09-17 1981-09-10 Producing graded index optical glass articles from silica gel bodies
DE19813137045 DE3137045A1 (en) 1980-09-17 1981-09-17 OPTICAL GLASS BODY WITH SPACIOUS DISTRIBUTION, METHOD FOR THE PRODUCTION THEREOF AND ITS USE AS A LIGHT-BREAKING ELEMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17994180A JPS57106534A (en) 1980-12-18 1980-12-18 Production of optical glass articles

Publications (1)

Publication Number Publication Date
JPS57106534A true JPS57106534A (en) 1982-07-02

Family

ID=16074612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17994180A Pending JPS57106534A (en) 1980-09-17 1980-12-18 Production of optical glass articles

Country Status (1)

Country Link
JP (1) JPS57106534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60153977U (en) * 1984-03-22 1985-10-14 豊田　フジヱ Free size cake mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60153977U (en) * 1984-03-22 1985-10-14 豊田　フジヱ Free size cake mold
JPS629813Y2 (en) * 1984-03-22 1987-03-07

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