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
Application number
JP12400886U
Other languages
Japanese (ja)
Other versions
JP2517697Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP12400886U priority Critical patent/JP2517697Y2/en
Publication of JPS6332312U publication Critical patent/JPS6332312U/ja
Application granted granted Critical
Publication of JP2517697Y2 publication Critical patent/JP2517697Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

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)

【実用新案登録請求の範囲】 同一基板上に複数個の半導体レーザを集積した
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.
JP12400886U 1986-08-14 1986-08-14 Multiple beam optical head Expired - Lifetime JP2517697Y2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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