JPS62120431U - - Google Patents
Info
- Publication number
- JPS62120431U JPS62120431U JP902686U JP902686U JPS62120431U JP S62120431 U JPS62120431 U JP S62120431U JP 902686 U JP902686 U JP 902686U JP 902686 U JP902686 U JP 902686U JP S62120431 U JPS62120431 U JP S62120431U
- Authority
- JP
- Japan
- Prior art keywords
- optical head
- beams
- beam optical
- prism
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図は本考案による複数ビーム光ヘツドの一
実施例を示す構成図、第２図は従来の一般的な複
数ビーム光ヘツドの構成図である。
１０…プリズム、１１，１２，１３…反射面、
２０ａ，２０ｂ，２０ｃ，２０ｄ…レーザ光、２
１ａ，２１ｂ…半導体レーザ（光源）、２２…コ
リメートレンズ、２３…偏光ビームスプリツタ、
２４…１／４波長板、２５…アクチユエータ、２
６…収束レンズ、２７…記録媒体、３０…検出器
。
FIG. 1 is a block diagram showing an embodiment of a multi-beam optical head according to the present invention, and FIG. 2 is a block diagram of a conventional general multi-beam optical head. 10... Prism, 11, 12, 13... Reflective surface,
20a, 20b, 20c, 20d...Laser light, 2
1a, 21b... Semiconductor laser (light source), 22... Collimating lens, 23... Polarizing beam splitter,
24...1/4 wavelength plate, 25...actuator, 2
6... Converging lens, 27... Recording medium, 30... Detector.
Claims (1)
て、記録媒体から反射した光軸が互いに平行でな
い複数のビームを分離する手段として、前記複数
ビームのうち少なくとも１つのビームが臨界角よ
り小さい角度で入射するように反射面を設定した
プリズムを有することを特徴とする複数ビーム光
ヘツド。 In a multi-beam optical head equipped with a plurality of light sources, at least one beam among the plurality of beams is incident at an angle smaller than a critical angle as a means for separating a plurality of beams reflected from a recording medium whose optical axes are not parallel to each other. A multi-beam optical head characterized by having a prism having a reflective surface set as shown in FIG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP902686U JPS62120431U (en) | 1986-01-24 | 1986-01-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP902686U JPS62120431U (en) | 1986-01-24 | 1986-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62120431U true JPS62120431U (en) | 1987-07-30 |
Family
ID=30793951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP902686U Pending JPS62120431U (en) | 1986-01-24 | 1986-01-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62120431U (en) |
-
1986
- 1986-01-24 JP JP902686U patent/JPS62120431U/ja active Pending
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