JPH02139723A - 光ピックアップ装置 - Google Patents
光ピックアップ装置Info
- Publication number
- JPH02139723A JPH02139723A JP1263190A JP26319089A JPH02139723A JP H02139723 A JPH02139723 A JP H02139723A JP 1263190 A JP1263190 A JP 1263190A JP 26319089 A JP26319089 A JP 26319089A JP H02139723 A JPH02139723 A JP H02139723A
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- grating
- lens
- light beam
- focusing
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 26
- 239000010409 thin film Substances 0.000 claims description 12
- 230000001902 propagating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004544 sputter deposition Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
Landscapes
- Optical Head (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1263190A JPH02139723A (ja) | 1989-10-09 | 1989-10-09 | 光ピックアップ装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1263190A JPH02139723A (ja) | 1989-10-09 | 1989-10-09 | 光ピックアップ装置 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57180257A Division JPS5969732A (ja) | 1982-10-14 | 1982-10-14 | 薄膜型２次元フオ−カシング装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02139723A true JPH02139723A (ja) | 1990-05-29 |
| JPH0435818B2 JPH0435818B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-06-12 |
Family
ID=17386022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1263190A Granted JPH02139723A (ja) | 1989-10-09 | 1989-10-09 | 光ピックアップ装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02139723A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1989
- 1989-10-09 JP JP1263190A patent/JPH02139723A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0435818B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-06-12 |
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