JPS58131432U - optical scanning device - Google Patents
optical scanning deviceInfo
- Publication number
- JPS58131432U JPS58131432U JP2841382U JP2841382U JPS58131432U JP S58131432 U JPS58131432 U JP S58131432U JP 2841382 U JP2841382 U JP 2841382U JP 2841382 U JP2841382 U JP 2841382U JP S58131432 U JPS58131432 U JP S58131432U
- Authority
- JP
- Japan
- Prior art keywords
- stand
- scanning device
- optical scanning
- recording medium
- pick
- 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
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図は本考案の光学式走査装置のピックアップ台上に
設ける光学系の一例の構成を一部断面で示す平面図、第
２図は第１図の部分断面図、第３図は記録媒体上での記
録用ビームスポットと再生用ビームスポットとの相対的
位置関係を示す線図、第４図は第１図に示す第２の光検
出器の構成およびその処理回路の構成を示す線図、第５
図および第６図Ａ、 Ｂは本考案の光学式走査装置の一
実施例を示す線図、第７図Ａ、 ＢおよびＣは同じく他
の実施例を示す線図、第８図ＡおよびＢは同じく更に他
の実施例を示す線図である。
１・・・ピックアップ台、２・・・記録用半導体レーザ
、３・・・再生用半導体レーザ、４・・・保持部材、５
・・・基台、６，７・・・コリメートレンズ、８・・・
整形プリズム、９・・・グレーティング、１０・・・合
成プリズム、１０Ａ・・・光学面、ＩＯＢ・・・反射面
、１１，１５゜２１・・・レンズ、１２・・・偏光ビー
ムスプリッタ、１３．１４．１６，２２．２４・・・全
反射ミラー、１７・・・１７４波長板、１Ｂ・・・対物
レンズ、１９・・・ディスク、２０・・・対物レンズ駆
動装置、２３・・・シリンドリカルレンズ−２５・・・
全反射プリズム、２６・・・第１の光検出器、２７・・
・第２の光検出器、２８−１〜２Ｂ−４，２９−１，２
９−２・・・受光領域、３０−１〜３０−３・・・加算
器、３１−１．３１−２・・・差動増幅器、３２・・・
保持装置、３３・・・開孔、３４−１〜３４−４・・・
長孔、３５・・・突部、３６・・・送り台、３７・・・
スクリューねじ、３Ｂ−’！、３Ｂ−２・・・ガイド、
３９・・・雌ねじ、４０・・・ピン、４１・・・雌ねじ
、４２・・・座金、４３・・・押えねじ、４４・・・ば
ね、４５・・・微調ねじ、５１・・・穴、５２・・・ピ
ン、５３・・・長孔、５４・・・座金、５５・・・押え
ねじ、５６・・・切欠き、５７・・・突起、５８．６１
・・・隙間、５９・・・板ばね、６０；・・微調ねじ、
７１・・・穴、７２・・・支点ねじ、７３・・・長孔、
７４・・・座金、７５・・・押えねｑFIG. 1 is a plan view showing, in partial cross section, the configuration of an example of the optical system provided on the pickup table of the optical scanning device of the present invention, FIG. 2 is a partial cross section of FIG. 1, and FIG. 3 is a recording medium. A diagram showing the relative positional relationship between the recording beam spot and the reproduction beam spot above, and FIG. 4 is a diagram showing the configuration of the second photodetector shown in FIG. 1 and the configuration of its processing circuit. , 5th
6A and 6B are diagrams showing one embodiment of the optical scanning device of the present invention, FIGS. 7A, B and C are diagrams similarly showing another embodiment, and FIGS. 8A and B 2 is a diagram showing still another embodiment. DESCRIPTION OF SYMBOLS 1...Pickup stand, 2...Semiconductor laser for recording, 3...Semiconductor laser for reproduction, 4...Holding member, 5
...Base, 6,7...Collimating lens, 8...
Shaping prism, 9... Grating, 10... Synthesizing prism, 10A... Optical surface, IOB... Reflecting surface, 11, 15° 21... Lens, 12... Polarizing beam splitter, 13. 14.16, 22.24... Total reflection mirror, 17... 174 wavelength plate, 1B... Objective lens, 19... Disc, 20... Objective lens drive device, 23... Cylindrical lens -25...
Total reflection prism, 26...first photodetector, 27...
・Second photodetector, 28-1 to 2B-4, 29-1, 2
9-2... Light receiving area, 30-1 to 30-3... Adder, 31-1.31-2... Differential amplifier, 32...
Holding device, 33... Opening, 34-1 to 34-4...
Long hole, 35... protrusion, 36... feed base, 37...
Screw screw, 3B-'! , 3B-2...guide,
39... Female thread, 40... Pin, 41... Female thread, 42... Washer, 43... Holding screw, 44... Spring, 45... Fine adjustment screw, 51... Hole, 52... Pin, 53... Long hole, 54... Washer, 55... Holding screw, 56... Notch, 57... Projection, 58.61
... Gap, 59 ... Leaf spring, 60; ... Fine adjustment screw,
71... Hole, 72... Fulcrum screw, 73... Long hole,
74... washer, 75... presser foot q
Claims (1)
り台と、この送り台上に設けられ、複数の光束を発生す
る手段およびそれら光束を前記ディスク状記録媒体上に
収束させる対物レンズを有するピックアップ台とを具え
る光学式走査装置において、 前記ピックアップ台を前記送り台上で前記対物レンズの
光軸またはその近傍を中心として回動自在に保持する手
段と、前記ピックアップ台を前記送り台上に固定する手
段とを設け、前記ピックアップ台を、前記対物レンズに
より前記ディスク状記録媒体上に収束される複数の光束
のスポット位置が、該ディスク状記録媒体のトラックに
対して所定の位置関係となるように調整して前記固定手
段により前記送り台上に固定し得るよう構成したことを
特徴とする光学式走査装置。[Claims for Utility Model Registration] A feeding table movable in the radial direction of a disc-shaped recording medium, a means provided on the feeding table for generating a plurality of light beams, and a means for generating a plurality of light beams on the disk-shaped recording medium. an optical scanning device comprising: a pick-up stand having an objective lens converging upward; means for holding the pick-up stand rotatably about the optical axis of the objective lens or a vicinity thereof on the feed stand; means for fixing the pick-up stand on the feed stand, and the pick-up stand is arranged so that the spot positions of the plurality of light beams converged onto the disk-shaped recording medium by the objective lens are on the track of the disk-shaped recording medium. 1. An optical scanning device characterized in that the optical scanning device is configured such that it can be adjusted to have a predetermined positional relationship with respect to the feed table and fixed on the feed table by the fixing means.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982028413U JPH0636494Y2 (en) | 1982-03-02 | 1982-03-02 | Optical scanning device |
| US06/466,910 US4574371A (en) | 1982-02-20 | 1983-02-16 | Apparatus for recording and reproducing information on an optical disc |
| DE3305904A DE3305904A1 (en) | 1982-02-20 | 1983-02-21 | DEVICE FOR RECORDING AND PLAYING BACK INFORMATION |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982028413U JPH0636494Y2 (en) | 1982-03-02 | 1982-03-02 | Optical scanning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58131432U true JPS58131432U (en) | 1983-09-05 |
| JPH0636494Y2 JPH0636494Y2 (en) | 1994-09-21 |
Family
ID=30040260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982028413U Expired - Lifetime JPH0636494Y2 (en) | 1982-02-20 | 1982-03-02 | Optical scanning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636494Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6318532A (en) * | 1986-07-10 | 1988-01-26 | Matsushita Electric Ind Co Ltd | Optical signal reader |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167033U (en) * | 1980-05-13 | 1981-12-10 |
-
1982
- 1982-03-02 JP JP1982028413U patent/JPH0636494Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167033U (en) * | 1980-05-13 | 1981-12-10 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6318532A (en) * | 1986-07-10 | 1988-01-26 | Matsushita Electric Ind Co Ltd | Optical signal reader |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0636494Y2 (en) | 1994-09-21 |
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