JPS5611403A - Reflector - Google Patents
ReflectorInfo
- Publication number
- JPS5611403A JPS5611403A JP8633079A JP8633079A JPS5611403A JP S5611403 A JPS5611403 A JP S5611403A JP 8633079 A JP8633079 A JP 8633079A JP 8633079 A JP8633079 A JP 8633079A JP S5611403 A JPS5611403 A JP S5611403A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- protective film
- mirror surface
- alkali
- antibrittleness
- 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
Links
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
PURPOSE: To provide antibrittleness, superior heat resistance and superior thermal impact resistance and enhance the chemical resistance, especially the alkali resistance of the mirror surface of a base material by covering the surface with a siliceous transparent protective film of a special composition.
CONSTITUTION: A base material such as aluminum, iron, glass or the like is used properly according to the application of the resulting reflector, and a mirror surface formed on the material is covered with a siliceous transparent protective film consisting of 52.0W97.0mol% SiO2, 1W23mol% at least one oxide selected from P2O5, B2O3 and Al2O3, and 2W25mol% at least one alkali metal oxide selected from Li2O, Na2O and K2O other than water by sputtering or other method. Since the protective film contains such oxide and such alkali metal oxide as well as silica, it has antibrittleness, superior heat resistance and superior thermal impact resistance, and the chemical resistance, especially the alkali resistance of the mirror surface can be enhanced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8633079A JPS5611403A (en) | 1979-07-07 | 1979-07-07 | Reflector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8633079A JPS5611403A (en) | 1979-07-07 | 1979-07-07 | Reflector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5611403A true JPS5611403A (en) | 1981-02-04 |
Family
ID=13883819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8633079A Pending JPS5611403A (en) | 1979-07-07 | 1979-07-07 | Reflector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5611403A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5166842A (en) * | 1974-09-30 | 1976-06-09 | American Optical Corp | |
JPS528189A (en) * | 1975-07-08 | 1977-01-21 | Teijin Ltd | Dyeing method |
JPS54156650A (en) * | 1978-05-31 | 1979-12-10 | Canon Inc | High durability mirror |
-
1979
- 1979-07-07 JP JP8633079A patent/JPS5611403A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5166842A (en) * | 1974-09-30 | 1976-06-09 | American Optical Corp | |
JPS528189A (en) * | 1975-07-08 | 1977-01-21 | Teijin Ltd | Dyeing method |
JPS54156650A (en) * | 1978-05-31 | 1979-12-10 | Canon Inc | High durability mirror |
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