JPH01133313U - - Google Patents
Info
- Publication number
- JPH01133313U JPH01133313U JP3009588U JP3009588U JPH01133313U JP H01133313 U JPH01133313 U JP H01133313U JP 3009588 U JP3009588 U JP 3009588U JP 3009588 U JP3009588 U JP 3009588U JP H01133313 U JPH01133313 U JP H01133313U
- Authority
- JP
- Japan
- Prior art keywords
- light
- resin layer
- shielding film
- knife edge
- reading beam
- 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
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3009588U JPH01133313U (US06521211-20030218-C00004.png) | 1988-03-07 | 1988-03-07 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3009588U JPH01133313U (US06521211-20030218-C00004.png) | 1988-03-07 | 1988-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01133313U true JPH01133313U (US06521211-20030218-C00004.png) | 1989-09-11 |
Family
ID=31254853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3009588U Pending JPH01133313U (US06521211-20030218-C00004.png) | 1988-03-07 | 1988-03-07 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01133313U (US06521211-20030218-C00004.png) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003016683A (ja) * | 2001-06-29 | 2003-01-17 | Ricoh Co Ltd | 光ピックアップ装置及び積層光学素子の作成方法及び光ディスクドライブ装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS586534A (ja) * | 1981-07-03 | 1983-01-14 | Matsushita Electric Ind Co Ltd | 再生装置の光学装置 |
JPS61287042A (ja) * | 1985-06-12 | 1986-12-17 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
-
1988
- 1988-03-07 JP JP3009588U patent/JPH01133313U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS586534A (ja) * | 1981-07-03 | 1983-01-14 | Matsushita Electric Ind Co Ltd | 再生装置の光学装置 |
JPS61287042A (ja) * | 1985-06-12 | 1986-12-17 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003016683A (ja) * | 2001-06-29 | 2003-01-17 | Ricoh Co Ltd | 光ピックアップ装置及び積層光学素子の作成方法及び光ディスクドライブ装置 |