JPH0361618U - - Google Patents
Info
- Publication number
- JPH0361618U JPH0361618U JP11974989U JP11974989U JPH0361618U JP H0361618 U JPH0361618 U JP H0361618U JP 11974989 U JP11974989 U JP 11974989U JP 11974989 U JP11974989 U JP 11974989U JP H0361618 U JPH0361618 U JP H0361618U
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- total reflection
- reflection surface
- recording medium
- magnetic recording
- 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
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Description
第１図はこの考案の第１実施例の要部の構成を
示す図、第２図は第１図の部分拡大図、第３図は
この考案の第２実施例の要部の構成を示す部分拡
大図、第４図は同じく第３実施例の要部の構成を
示す部分拡大図、第５図、第６図、第７図および
第８図は従来の技術を説明するための図である。
１…半導体レーザアレイ、２…光磁気デイスク
、７…像回転プリズム、７ａ…全反射面、７ｂ，
７ｃ…透過面、２１〜２６…誘電体膜。
Fig. 1 is a diagram showing the configuration of the main part of the first embodiment of this invention, Fig. 2 is a partially enlarged view of Fig. 1, and Fig. 3 is a diagram showing the composition of the main part of the second embodiment of this invention. FIG. 4 is a partially enlarged view showing the configuration of the main part of the third embodiment, and FIGS. 5, 6, 7, and 8 are views for explaining the conventional technology. be. DESCRIPTION OF SYMBOLS 1... Semiconductor laser array, 2... Magneto-optical disk, 7... Image rotation prism, 7a... Total reflection surface, 7b,
7c...Transmission surface, 21-26...Dielectric film.
Claims (1)
ズムを経て垂直磁気記録媒体に投射して、該垂直
磁気記録媒体に記録された情報を再生するように
した光磁気ピツクアツプ装置において、 前記像回転プリズムの少なくとも全反射面に、
該像回転プリズムにおける前記複数の光ビームの
各々の位相差を補正する誘電体膜を設けたことを
特徴とする光磁気ピツクアツプ装置。[Claims for Utility Model Registration] A magneto-optical device that reproduces information recorded on a perpendicular magnetic recording medium by projecting a plurality of light beams onto a perpendicular magnetic recording medium through an image rotating prism having a total reflection surface. In the pick-up device, at least a total reflection surface of the image rotation prism,
A magneto-optical pickup device characterized in that a dielectric film is provided for correcting the phase difference of each of the plurality of light beams in the image rotation prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11974989U JPH0361618U (en) | 1989-10-16 | 1989-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11974989U JPH0361618U (en) | 1989-10-16 | 1989-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0361618U true JPH0361618U (en) | 1991-06-17 |
Family
ID=31667855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11974989U Pending JPH0361618U (en) | 1989-10-16 | 1989-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0361618U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160852A (en) * | 1984-12-30 | 1986-07-21 | Olympus Optical Co Ltd | Photomagnetic pickup device |
| JPS61260440A (en) * | 1985-05-15 | 1986-11-18 | Seiko Epson Corp | Optical head for photomagnetic recording |
| JPH01177510A (en) * | 1988-01-07 | 1989-07-13 | Nec Corp | Image rotation actuator device and plural beam condensing optical device |
-
1989
- 1989-10-16 JP JP11974989U patent/JPH0361618U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160852A (en) * | 1984-12-30 | 1986-07-21 | Olympus Optical Co Ltd | Photomagnetic pickup device |
| JPS61260440A (en) * | 1985-05-15 | 1986-11-18 | Seiko Epson Corp | Optical head for photomagnetic recording |
| JPH01177510A (en) * | 1988-01-07 | 1989-07-13 | Nec Corp | Image rotation actuator device and plural beam condensing optical device |
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