JPS63153326U - - Google Patents
Info
- Publication number
- JPS63153326U JPS63153326U JP4540687U JP4540687U JPS63153326U JP S63153326 U JPS63153326 U JP S63153326U JP 4540687 U JP4540687 U JP 4540687U JP 4540687 U JP4540687 U JP 4540687U JP S63153326 U JPS63153326 U JP S63153326U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- information recording
- recording surface
- magneto
- optical
- 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 15
- 238000001514 detection method Methods 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
Description
第1図はこの考案の第一の実施例を示す概略正
面図、第2図はその概略側面図、第3図はこの考
案の第二の実施例を示す概略正面図、第4図はそ
の概略側面図、第5図は集積光検知素子の平面図
、第6図はその正面図、第7図は回折効率分布特
性図、第8図は偏光面回転状態を示す原理説明図
、第9図は出力電圧特性の線図、第10図はこの
考案の第三の実施例を示す概略正面図、第11図
は従来例を示す光ピツクアツプの概略側面図であ
る。
20……光磁気デイスク、20b……情報記録
面、21……レーザ光源、21a……半導体レー
ザ、21c……ピンホール、22……磁気コイル
(磁気手段)、23……コリメートレンズ(コリ
メート光学系)、24……反射プリズム(反射光
学系)、25……アクチユエータ、26……移動
光学系、27……検出光学系、37……アクチユ
エータ、38……薄膜磁気ヘツド(磁気手段)、
39……マイクロフレネルレンズ(コリメート光
学系)、40……移動光学系、41……検出光学
系、55……検出光学系。
Fig. 1 is a schematic front view showing a first embodiment of this invention, Fig. 2 is a schematic side view thereof, Fig. 3 is a schematic front view showing a second embodiment of this invention, and Fig. 4 is a schematic front view thereof. A schematic side view, FIG. 5 is a plan view of the integrated photodetecting element, FIG. 6 is a front view thereof, FIG. 7 is a diffraction efficiency distribution characteristic diagram, FIG. 8 is a principle explanatory diagram showing the polarization plane rotation state, and FIG. 9 10 is a schematic front view showing a third embodiment of the invention, and FIG. 11 is a schematic side view of an optical pickup showing a conventional example. 20... magneto-optical disk, 20b... information recording surface, 21... laser light source, 21a... semiconductor laser, 21c... pinhole, 22... magnetic coil (magnetic means), 23... collimating lens (collimating optical system), 24... Reflection prism (reflection optical system), 25... Actuator, 26... Moving optical system, 27... Detection optical system, 37... Actuator, 38... Thin film magnetic head (magnetic means),
39... Micro Fresnel lens (collimating optical system), 40... Moving optical system, 41... Detection optical system, 55... Detection optical system.
Claims (1)
情報記録面に対しレーザビームを直接微小スポツ
ト状に絞つて照射する半導体レーザを備えたレー
ザ光源と、前記情報記録面に磁界を印加する磁気
手段と、前記レーザ光源により照射された前記情
報記録面からの透過光を平行ビームに変換するコ
リメート光学系と、前記平行ビームを反射させる
反射光学系とをアクチユエータにより連動させて
前記光磁気デイスクに対して相対移動させる移動
光学系を形成し、前記反射光学系からの反射ビー
ムを受光する検出光学系を固定配置させて設けた
ことを特徴とする光磁気情報記録再生装置。 A laser light source including a semiconductor laser that is close to the information recording surface of a magneto-optical disk and irradiates the information recording surface with a laser beam focused directly onto the information recording surface, and a magnetic means that applies a magnetic field to the information recording surface. A collimating optical system that converts transmitted light from the information recording surface irradiated by the laser light source into a parallel beam, and a reflecting optical system that reflects the parallel beam are interlocked by an actuator to direct the magneto-optical disk to the magneto-optical disk. What is claimed is: 1. A magneto-optical information recording and reproducing apparatus, characterized in that a moving optical system is formed to relatively move the optical system, and a detection optical system that receives a reflected beam from the reflective optical system is fixedly arranged.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4540687U JPS63153326U (en) | 1987-03-27 | 1987-03-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4540687U JPS63153326U (en) | 1987-03-27 | 1987-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63153326U true JPS63153326U (en) | 1988-10-07 |
Family
ID=30864117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4540687U Pending JPS63153326U (en) | 1987-03-27 | 1987-03-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63153326U (en) |
-
1987
- 1987-03-27 JP JP4540687U patent/JPS63153326U/ja active Pending
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