JPS6332312U - - Google Patents
Info
- Publication number
- JPS6332312U JPS6332312U JP12400886U JP12400886U JPS6332312U JP S6332312 U JPS6332312 U JP S6332312U JP 12400886 U JP12400886 U JP 12400886U JP 12400886 U JP12400886 U JP 12400886U JP S6332312 U JPS6332312 U JP S6332312U
- Authority
- JP
- Japan
- Prior art keywords
- light source
- laser light
- recording medium
- optical system
- collimating lens
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Description
第1図は本考案の一実施例の構成図、第2図は
従来の複数ビーム光ヘツドの一例を示す構成図で
ある。
11……半導体レーザ光源、12,13,21
,31……半導体レーザ、14,15,22,3
2……放射ビーム、16,23,33……コリメ
ートレンズ、24……プリズム、18,25……
偏光ビームスプリツタ、19,26,27……1
/4波長板、28……干渉フイルタ、101,2
9……収束レンズ、102,30……記録媒体、
34,35……ビームスポツト、103……レン
ズ、104……空間フイルタ、105,36……
検出系。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a conventional multi-beam optical head. 11... Semiconductor laser light source, 12, 13, 21
, 31... semiconductor laser, 14, 15, 22, 3
2... Radiation beam, 16, 23, 33... Collimating lens, 24... Prism, 18, 25...
Polarizing beam splitter, 19, 26, 27...1
/4 wavelength plate, 28...Interference filter, 101, 2
9... Converging lens, 102, 30... Recording medium,
34, 35... Beam spot, 103... Lens, 104... Spatial filter, 105, 36...
Detection system.
Claims (1)
レーザ光源と、前記レーザ光源からの放射光を平
行化するコリメートレンズと、記録媒体に集光す
る収束レンズとからなる収束光学系と、 前記記録媒体からの反射光を検出器に導く検出
光学系とからなる複数ビーム光ヘツドにおいて、 前記レーザ光源の発光点が前記コリメートレン
ズの有効視野の内と外に、それぞれ少なくとも1
つ位置することを特徴とする複数ビーム光ヘツド
。[Claims for Utility Model Registration] Consisting of a laser light source in which a plurality of semiconductor lasers are integrated on the same substrate, a collimating lens that collimates the light emitted from the laser light source, and a converging lens that focuses the light on a recording medium. In a multi-beam optical head comprising a converging optical system and a detection optical system that guides reflected light from the recording medium to a detector, the light emitting point of the laser light source is located within and outside the effective field of the collimating lens, respectively. 1
A multi-beam optical head characterized by having two positions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12400886U JP2517697Y2 (en) | 1986-08-14 | 1986-08-14 | Multiple beam optical head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12400886U JP2517697Y2 (en) | 1986-08-14 | 1986-08-14 | Multiple beam optical head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6332312U true JPS6332312U (en) | 1988-03-02 |
JP2517697Y2 JP2517697Y2 (en) | 1996-11-20 |
Family
ID=31015631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12400886U Expired - Lifetime JP2517697Y2 (en) | 1986-08-14 | 1986-08-14 | Multiple beam optical head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2517697Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0398656A2 (en) * | 1989-05-16 | 1990-11-22 | Victor Company Of Japan, Ltd. | Electric charge image recording medium and recording/reproducing apparatus |
-
1986
- 1986-08-14 JP JP12400886U patent/JP2517697Y2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0398656A2 (en) * | 1989-05-16 | 1990-11-22 | Victor Company Of Japan, Ltd. | Electric charge image recording medium and recording/reproducing apparatus |
EP0398656A3 (en) * | 1989-05-16 | 1991-02-06 | Victor Company Of Japan, Ltd. | Electric charge image recording medium and recording/reproducing apparatus |
US5226029A (en) * | 1989-05-16 | 1993-07-06 | Victor Company Of Japan | Electric charge image recording medium and recording/reproducing apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP2517697Y2 (en) | 1996-11-20 |
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