JPS5756353A - Manufacture of refractive index distribution type lens - Google Patents
Manufacture of refractive index distribution type lensInfo
- Publication number
- JPS5756353A JPS5756353A JP13027880A JP13027880A JPS5756353A JP S5756353 A JPS5756353 A JP S5756353A JP 13027880 A JP13027880 A JP 13027880A JP 13027880 A JP13027880 A JP 13027880A JP S5756353 A JPS5756353 A JP S5756353A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- refractive index
- index distribution
- medium
- type lens
- 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.)
- Granted
Links
Landscapes
- Surface Treatment Of Glass (AREA)
Abstract
PURPOSE:To reduce the treating time and to enhance the productivity by changing the temp. of a medium in accordance with the composition of matrix glass in the manufacture of a refractive index distribution type lens by an ion exchange method. CONSTITUTION:Matrix glass contg. the 1st cations constituting a glass modifying oxide is brought into contact with a medium such as molten salt contg. the 2nd cations constituting a glass modifying oxide to provide a refractive index distribution changing from the surface of the glass to the interior by ion exchange. At this time, the temp. of the medium is raised or dropped in accordance with a change in the composition of the matrix glass. For example, the temp. raising or dropping speed of the medium is selected so that the average viscosity value of the glass is adjusted to 109-1011 with the progress of the ion exchange. By this method a refractive index distribution type lens can be manufactured in a short time without causing heat deformation in the matrix glass.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13027880A JPS5756353A (en) | 1980-09-19 | 1980-09-19 | Manufacture of refractive index distribution type lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13027880A JPS5756353A (en) | 1980-09-19 | 1980-09-19 | Manufacture of refractive index distribution type lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5756353A true JPS5756353A (en) | 1982-04-03 |
JPS6247826B2 JPS6247826B2 (en) | 1987-10-09 |
Family
ID=15030477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13027880A Granted JPS5756353A (en) | 1980-09-19 | 1980-09-19 | Manufacture of refractive index distribution type lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5756353A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5127931A (en) * | 1988-11-28 | 1992-07-07 | Schott Glaswerke | Process for ion exchange on glass or glass ceramic |
-
1980
- 1980-09-19 JP JP13027880A patent/JPS5756353A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5127931A (en) * | 1988-11-28 | 1992-07-07 | Schott Glaswerke | Process for ion exchange on glass or glass ceramic |
Also Published As
Publication number | Publication date |
---|---|
JPS6247826B2 (en) | 1987-10-09 |
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