JPS6217287B2 - - Google Patents
Info
- Publication number
- JPS6217287B2 JPS6217287B2 JP1180478A JP1180478A JPS6217287B2 JP S6217287 B2 JPS6217287 B2 JP S6217287B2 JP 1180478 A JP1180478 A JP 1180478A JP 1180478 A JP1180478 A JP 1180478A JP S6217287 B2 JPS6217287 B2 JP S6217287B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- light
- semiconductor laser
- disk
- distance
- 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.)
- Expired
Links
- 239000004065 semiconductor Substances 0.000 claims description 41
- 230000003287 optical effect Effects 0.000 claims description 17
- 230000004044 response Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 6
- 230000007423 decrease Effects 0.000 claims 1
- 230000001934 delay Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 230000002123 temporal effect Effects 0.000 description 2
- 229910016629 MnBi Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Landscapes
- Automatic Focus Adjustment (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1180478A JPS54104803A (en) | 1978-02-03 | 1978-02-03 | Focus detector in optical recorder-reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1180478A JPS54104803A (en) | 1978-02-03 | 1978-02-03 | Focus detector in optical recorder-reproducer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54104803A JPS54104803A (en) | 1979-08-17 |
JPS6217287B2 true JPS6217287B2 (US20110158925A1-20110630-C00042.png) | 1987-04-16 |
Family
ID=11788031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1180478A Granted JPS54104803A (en) | 1978-02-03 | 1978-02-03 | Focus detector in optical recorder-reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54104803A (US20110158925A1-20110630-C00042.png) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5883339A (ja) * | 1981-11-10 | 1983-05-19 | Teac Co | 光学的情報記録再生装置において最適フォ−カス状態を得る方法 |
JPS59127238A (ja) * | 1982-12-30 | 1984-07-23 | Sony Corp | 光学式情報記録装置 |
-
1978
- 1978-02-03 JP JP1180478A patent/JPS54104803A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS54104803A (en) | 1979-08-17 |
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