JPS616919U - Magnetic transfer type optical reproducing device - Google Patents
Magnetic transfer type optical reproducing deviceInfo
- Publication number
- JPS616919U JPS616919U JP9049584U JP9049584U JPS616919U JP S616919 U JPS616919 U JP S616919U JP 9049584 U JP9049584 U JP 9049584U JP 9049584 U JP9049584 U JP 9049584U JP S616919 U JPS616919 U JP S616919U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic transfer
- light beam
- type optical
- reproducing device
- transfer 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.)
- Pending
Links
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の磁気転写型光再生装置の一実施例の構
成を示す断面図、第２図は従来の磁気転写型光再生装置
の構成を示す断面図である。
１・・・半導体レーザー、２・・・コリメート・レンズ
、３・・・ハーフミラー、４，７・・・収束レンス、５
・・・磁気転写媒体、６・・・補償板、８・・・偏光回
路子、９・・・収差レンズ、１０・・・光電変換素子、
１１・・・比較回路、１５・・・磁気記録媒体。FIG. 1 is a sectional view showing the structure of an embodiment of the magnetic transfer type optical reproducing apparatus of the present invention, and FIG. 2 is a sectional view showing the structure of a conventional magnetic transfer type optical reproducing apparatus. 1... Semiconductor laser, 2... Collimating lens, 3... Half mirror, 4, 7... Converging lens, 5
... Magnetic transfer medium, 6 ... Compensation plate, 8 ... Polarization circuit element, 9 ... Aberration lens, 10 ... Photoelectric conversion element,
11... Comparison circuit, 15... Magnetic recording medium.
Claims (1)
媒体と、該磁気転写媒体に直線偏光を有する再生用光ビ
ームを照射し、磁気転写媒体に転写された磁化方向に応
じて反射光の偏光面に生じる第１、第２の回転方向を弁
別する弁別手段を備えた磁気転写型光再生装置において
、 前記弁別手段は、 再生用光ビーム表分割し、該分割した再生用光−ビーム
の第１の部分を前記磁気転写媒体に導く光ビーム分割手
段と、 前記磁気転写媒体によって反射された再生用光ビームの
第１の部分の偏光面に生じる第１、第２の回転方向のう
ちいずれか一方を、再生用光ビームの第２の部分に生じ
させる偏光手段と、前記磁気転写媒体から反射された第
１の部分及び前記偏光手段を経た第２の部分に対し、相
互の偏光面に生じた回転方向が一致する場合に干渉を生
じさせる手段と、 該干渉の発生の有無を検出する手段を備えたことを特徴
とする磁気転写型光再生装置。[Claims for Utility Model Registration] A magnetic transfer medium that transfers the direction of magnetization recorded on a magnetic recording medium, and a magnetization transferred to the magnetic transfer medium by irradiating the magnetic transfer medium with a reproducing light beam having linearly polarized light. In a magnetic transfer type optical reproducing device comprising a discriminating means for discriminating between first and second rotation directions occurring in the polarization plane of reflected light according to the direction, the discriminating means divides a reproduction light beam table, and divides the reproduction light beam table, a light beam splitting means for guiding a first portion of the reproduction light beam to the magnetic transfer medium; a polarizing means for causing a second portion of the reproducing light beam to rotate in either one of the two rotational directions; On the other hand, a magnetic transfer type optical reproducing device is characterized in that it is equipped with means for causing interference when the rotational directions of the mutual polarization planes match, and means for detecting whether or not the interference occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9049584U JPS616919U (en) | 1984-06-18 | 1984-06-18 | Magnetic transfer type optical reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9049584U JPS616919U (en) | 1984-06-18 | 1984-06-18 | Magnetic transfer type optical reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS616919U true JPS616919U (en) | 1986-01-16 |
Family
ID=30645535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9049584U Pending JPS616919U (en) | 1984-06-18 | 1984-06-18 | Magnetic transfer type optical reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS616919U (en) |
-
1984
- 1984-06-18 JP JP9049584U patent/JPS616919U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS616919U (en) | Magnetic transfer type optical reproducing device | |
| JPS5992457A (en) | Optical reproducer | |
| JPS59121637A (en) | Magneto-optical recording and reproducing device | |
| JPS5925517U (en) | optical splitter | |
| JPS59112326U (en) | optical head | |
| JPS6085727U (en) | information reading device | |
| JPS58165748U (en) | magnetic recording readout device | |
| JPS5852650U (en) | optical head | |
| JPS6082728U (en) | information reading device | |
| JPS616918U (en) | Magneto-optical playback device | |
| JPS5950062U (en) | magnetic head | |
| JPS6251527U (en) | ||
| JPH01223653A (en) | Magneto-optical recording and reproducing optical head | |
| JPS6054226U (en) | Magneto-optical pickup device | |
| JPS6064424U (en) | magneto-optical disk device | |
| JPS6036622U (en) | optical lens | |
| JPS6077019U (en) | Optical information reading device | |
| JPS6242127U (en) | ||
| JPS60153560U (en) | semiconductor laser module | |
| JPS58165747U (en) | magnetic recording readout device | |
| JPS59161521U (en) | optical head | |
| JPS6089620U (en) | Photodetector for information detection | |
| JPS6035323U (en) | Optical pick-up device | |
| JPS5843634U (en) | Pickup for recording and playback | |
| JPS63193216U (en) |