JPS5767047A - Glass lens having hidden mark - Google Patents
Glass lens having hidden markInfo
- Publication number
- JPS5767047A JPS5767047A JP55139127A JP13912780A JPS5767047A JP S5767047 A JPS5767047 A JP S5767047A JP 55139127 A JP55139127 A JP 55139127A JP 13912780 A JP13912780 A JP 13912780A JP S5767047 A JPS5767047 A JP S5767047A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- hidden mark
- glas
- mark
- water glass
- 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
- 239000011521 glass Substances 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 235000019353 potassium silicate Nutrition 0.000 abstract 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 230000009477 glass transition Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
Landscapes
- Eyeglasses (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
PURPOSE: To obtain a glas lens which is colorless and transparent during ordinary use, having a hidden mark capable or being easily seen independently of time and place by baking water glass on a part of the surface of a lens.
CONSTITUTION: The surface of a glas lens is marked with a 0.1W20wt% aqueous soln. of water glass consisting of 1mol Na2O and 1W5mol SiO2, and is backed at a temp. 100°C below the glass transition temp. The resulting hidden mark on the lens undergoes no change in the mark performance even if covered with a reflection preventing film, it is not made unclear even after long-time use under severe conditions, and it can be recognized by expiration or reflected light.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55139127A JPS591226B2 (en) | 1980-10-03 | 1980-10-03 | Glass lens with hidden marks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55139127A JPS591226B2 (en) | 1980-10-03 | 1980-10-03 | Glass lens with hidden marks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5767047A true JPS5767047A (en) | 1982-04-23 |
| JPS591226B2 JPS591226B2 (en) | 1984-01-11 |
Family
ID=15238139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55139127A Expired JPS591226B2 (en) | 1980-10-03 | 1980-10-03 | Glass lens with hidden marks |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591226B2 (en) |
-
1980
- 1980-10-03 JP JP55139127A patent/JPS591226B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS591226B2 (en) | 1984-01-11 |
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