JPS56121001A - Optical parts made of plastic - Google Patents
Optical parts made of plasticInfo
- Publication number
- JPS56121001A JPS56121001A JP2425080A JP2425080A JPS56121001A JP S56121001 A JPS56121001 A JP S56121001A JP 2425080 A JP2425080 A JP 2425080A JP 2425080 A JP2425080 A JP 2425080A JP S56121001 A JPS56121001 A JP S56121001A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- al2o3
- mgf2
- plastics
- sio
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Surface Treatment Of Optical Elements (AREA)
Abstract
PURPOSE:To obtain optical parts having a durable coating film which suppresses light reflection on a plastic surface and is stable in optical characteristics and free from peeling, etc., by forming an MgF2 layer and Al2O3 to specific optical thicknesses in sequence from the top layer and by using an SiO layer having a specific film thickness as the lowermost layer. CONSTITUTION:On plastics-made substrate B, SiO is formed to <=20mum film thickness by a resistance heating method, etc., to form the 3rd layer III having adhesive strength to plastics. On layer III, the 2nd layer II of Al2O3 is vapor-deposited by an ion plating method to <0.50lambda0 as design wavelength lambda0. Finally MgF2 is formed as the 1st layer I by the ion plating method to 0.25-0.30lambda0 thickness. Thus, a durable lens, etc., with a small secular change in optical characteristics can be obtained which has suppressed reflection upon air layer A with the 3rd layer having 1.620 refractive index, the 2nd layer having 1.620 and the 1st layer having 1.385 respectively to the substrate having 1.49.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2425080A JPS56121001A (en) | 1980-02-27 | 1980-02-27 | Optical parts made of plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2425080A JPS56121001A (en) | 1980-02-27 | 1980-02-27 | Optical parts made of plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56121001A true JPS56121001A (en) | 1981-09-22 |
Family
ID=12132991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2425080A Pending JPS56121001A (en) | 1980-02-27 | 1980-02-27 | Optical parts made of plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56121001A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6098401A (en) * | 1983-11-02 | 1985-06-01 | Hitachi Ltd | plastic optics |
| JPS60257401A (en) * | 1984-06-04 | 1985-12-19 | Hitachi Ltd | plastic optics |
| JPS6271665A (en) * | 1985-09-25 | 1987-04-02 | Nhk Spring Co Ltd | Thermal head |
-
1980
- 1980-02-27 JP JP2425080A patent/JPS56121001A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6098401A (en) * | 1983-11-02 | 1985-06-01 | Hitachi Ltd | plastic optics |
| JPH0549962B2 (en) * | 1983-11-02 | 1993-07-27 | Hitachi Ltd | |
| JPS60257401A (en) * | 1984-06-04 | 1985-12-19 | Hitachi Ltd | plastic optics |
| JPS6271665A (en) * | 1985-09-25 | 1987-04-02 | Nhk Spring Co Ltd | Thermal head |
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