JPH01154514U - - Google Patents
Info
- Publication number
- JPH01154514U JPH01154514U JP5067588U JP5067588U JPH01154514U JP H01154514 U JPH01154514 U JP H01154514U JP 5067588 U JP5067588 U JP 5067588U JP 5067588 U JP5067588 U JP 5067588U JP H01154514 U JPH01154514 U JP H01154514U
- Authority
- JP
- Japan
- Prior art keywords
- light
- light beam
- center
- incident
- optical pickup
- 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 claims description 7
- 201000009310 astigmatism Diseases 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000004075 alteration Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988050675U JPH0725857Y2 (ja) | 1988-04-15 | 1988-04-15 | 光ピックアップ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988050675U JPH0725857Y2 (ja) | 1988-04-15 | 1988-04-15 | 光ピックアップ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01154514U true JPH01154514U (de) | 1989-10-24 |
JPH0725857Y2 JPH0725857Y2 (ja) | 1995-06-07 |
Family
ID=31276712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988050675U Expired - Lifetime JPH0725857Y2 (ja) | 1988-04-15 | 1988-04-15 | 光ピックアップ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0725857Y2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02179929A (ja) * | 1988-12-29 | 1990-07-12 | Sony Corp | 光記録媒体の信号検出方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59215029A (ja) * | 1983-05-20 | 1984-12-04 | Sankyo Seiki Mfg Co Ltd | 光学情報再生装置 |
JPS61206944A (ja) * | 1985-03-11 | 1986-09-13 | Hitachi Ltd | 光磁気ディスク用の信号検出装置 |
-
1988
- 1988-04-15 JP JP1988050675U patent/JPH0725857Y2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59215029A (ja) * | 1983-05-20 | 1984-12-04 | Sankyo Seiki Mfg Co Ltd | 光学情報再生装置 |
JPS61206944A (ja) * | 1985-03-11 | 1986-09-13 | Hitachi Ltd | 光磁気ディスク用の信号検出装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02179929A (ja) * | 1988-12-29 | 1990-07-12 | Sony Corp | 光記録媒体の信号検出方法 |
Also Published As
Publication number | Publication date |
---|---|
JPH0725857Y2 (ja) | 1995-06-07 |
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