JPS61283036A - 光学式記録再生装置 - Google Patents
光学式記録再生装置Info
- Publication number
- JPS61283036A JPS61283036A JP12447185A JP12447185A JPS61283036A JP S61283036 A JPS61283036 A JP S61283036A JP 12447185 A JP12447185 A JP 12447185A JP 12447185 A JP12447185 A JP 12447185A JP S61283036 A JPS61283036 A JP S61283036A
- Authority
- JP
- Japan
- Prior art keywords
- light
- detection element
- convex lens
- split photodetector
- recording medium
- 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 36
- 238000001514 detection method Methods 0.000 claims abstract description 71
- 238000006073 displacement reaction Methods 0.000 abstract description 11
- 230000004907 flux Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12447185A JPS61283036A (ja) | 1985-06-07 | 1985-06-07 | 光学式記録再生装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12447185A JPS61283036A (ja) | 1985-06-07 | 1985-06-07 | 光学式記録再生装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61283036A true JPS61283036A (ja) | 1986-12-13 |
| JPH0546620B2 JPH0546620B2 (enrdf_load_html_response) | 1993-07-14 |
Family
ID=14886337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12447185A Granted JPS61283036A (ja) | 1985-06-07 | 1985-06-07 | 光学式記録再生装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61283036A (enrdf_load_html_response) |
-
1985
- 1985-06-07 JP JP12447185A patent/JPS61283036A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0546620B2 (enrdf_load_html_response) | 1993-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4797868A (en) | Optical system employing a laser beam for focusing, tracking and transferring information signals with respect to a magneto-optical memory | |
| US5004326A (en) | Magneto-optical information reproducing apparatus having a polarizing beam splitter disposed with an inclination of 45 degrees | |
| US5901132A (en) | Pickup head having two laser light sources for separately reading an optical disk with two recording layers | |
| JPS61283036A (ja) | 光学式記録再生装置 | |
| JP2636846B2 (ja) | 光磁気デイスクの光学ピツクアツプ装置 | |
| JPS61282809A (ja) | 焦点誤差検出装置 | |
| JPS61120352A (ja) | 焦点誤差検出装置 | |
| JPH02173937A (ja) | 光記録再生装置 | |
| JPH0845091A (ja) | フォーカスエラー検出装置 | |
| JP2660523B2 (ja) | 光記録再生装置 | |
| JP2806197B2 (ja) | 光ピックアップ | |
| JPS61280033A (ja) | 焦点誤差検出装置 | |
| JPS63302428A (ja) | 光学ヘッド | |
| JPH05128575A (ja) | 複数ビーム式光記録のためのシステム及び方法 | |
| JP2513237B2 (ja) | 光ヘッド装置 | |
| JPH01106340A (ja) | 光学ヘッド | |
| JPH0748262B2 (ja) | 焦点誤差検出装置 | |
| JPH06236564A (ja) | 光ピックアップ装置 | |
| JPS60234246A (ja) | 光学ヘツド | |
| JPH0731836B2 (ja) | 光磁気ピックアップ装置 | |
| JPS6316432A (ja) | 焦点誤差検出装置 | |
| JPS63229629A (ja) | 光学ヘツド | |
| JPH058499B2 (enrdf_load_html_response) | ||
| JPS62165744A (ja) | 光学ヘツド | |
| JPH03116549A (ja) | 焦点制御装置 |