JPS5814233U - optical recording and reproducing device - Google Patents
optical recording and reproducing deviceInfo
- Publication number
- JPS5814233U JPS5814233U JP10702081U JP10702081U JPS5814233U JP S5814233 U JPS5814233 U JP S5814233U JP 10702081 U JP10702081 U JP 10702081U JP 10702081 U JP10702081 U JP 10702081U JP S5814233 U JPS5814233 U JP S5814233U
- Authority
- JP
- Japan
- Prior art keywords
- recording
- control
- reproducing device
- objective lens
- light source
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は記録ディスクの形状を示す模式し第２図は本考
案の一実施装置の光学系を示す概略説明図、第３図は照
射パターンの説明図をそれぞれ顕わす。
主な図番の説明、Ｄ・・・ディスク、ＧＴ・・・ガイド
トラック、１・・・録再用レーザ光源、２・・・制御用
レーザ光源、１２．１５・・・センサ、１６・・・対物
レンズ駆動回路、８・・・対物レンズ。FIG. 1 is a schematic diagram showing the shape of a recording disk, FIG. 2 is a schematic explanatory diagram showing an optical system of an apparatus for implementing the present invention, and FIG. 3 is an explanatory diagram of an irradiation pattern. Explanation of main drawing numbers, D...Disk, GT...Guide track, 1...Laser light source for recording and playback, 2...Laser light source for control, 12.15...Sensor, 16... -Objective lens drive circuit, 8...objective lens.
Claims (1)
ィスクと、記録ビームを発する録再用レーザ光源と、制
御ビームを発する制御用レーザ光源と、前記制御ビーム
が前記ガイドトラックの中央を照射するとき記録ビーム
を相隣る２本の前記ガイドトラックの丁度中間位置に集
光照射せしめる光学手段と、記録ビーム遮断フィルタに
よって選択された制御ビームの反射光を受光してトラッ
キング状態と制御状態を検出するセンサと、該センサ出
力を入力して対物レンズを直交する２方向に変位せしめ
る出力を発する対物レンズ駆動回路とを配して成る光学
的記録再生装置。A disk having a spiral guide track formed at a constant pitch, a recording/reproducing laser light source that emits a recording beam, a control laser light source that emits a control beam, and when the control beam irradiates the center of the guide track. Optical means for condensing and irradiating a recording beam onto a position exactly midway between the two adjacent guide tracks, and detecting a tracking state and a control state by receiving the reflected light of the control beam selected by a recording beam cutoff filter. An optical recording/reproducing device comprising a sensor and an objective lens driving circuit which inputs the sensor output and generates an output for displacing an objective lens in two orthogonal directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10702081U JPS5814233U (en) | 1981-07-17 | 1981-07-17 | optical recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10702081U JPS5814233U (en) | 1981-07-17 | 1981-07-17 | optical recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5814233U true JPS5814233U (en) | 1983-01-28 |
Family
ID=29901469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10702081U Pending JPS5814233U (en) | 1981-07-17 | 1981-07-17 | optical recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5814233U (en) |
-
1981
- 1981-07-17 JP JP10702081U patent/JPS5814233U/en active Pending
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