JPS61120351A - Light detector adjusting mechanism - Google Patents
Light detector adjusting mechanismInfo
- Publication number
- JPS61120351A JPS61120351A JP24034184A JP24034184A JPS61120351A JP S61120351 A JPS61120351 A JP S61120351A JP 24034184 A JP24034184 A JP 24034184A JP 24034184 A JP24034184 A JP 24034184A JP S61120351 A JPS61120351 A JP S61120351A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- photodetector
- light detector
- spring
- light
- 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
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Automatic Focus Adjustment (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は光学式ディスクプレーヤの光学ヘッドにおけ
る光検知器を調整する光検知器調整機構１関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a photodetector adjustment mechanism 1 for adjusting a photodetector in an optical head of an optical disc player.
一般に、光検知器の調整は三軸方向について行なわれて
いる。即ち、光軸に垂直な面内の調整と光軸方向の調整
とである。光軸に垂直な面内の調整は光検知器内に光ス
ポットを適正に位置させるように行なわれ、光軸方向の
調整はディスク変化にともなう光スポットの焦点ズレを
検出する焦点検出特性にオフセットを生じさせないよう
に行なわれる。Generally, photodetectors are adjusted in three axial directions. That is, there are adjustments in a plane perpendicular to the optical axis and adjustments in the direction of the optical axis. Adjustment in the plane perpendicular to the optical axis is performed to properly position the light spot within the photodetector, and adjustment in the optical axis direction is offset to the focus detection characteristics that detect the shift in focus of the light spot due to disk changes. This is done in such a way as not to cause
従来の光学式ディスクプレーヤの光学ヘッドにおける光
検知器調整機構は第６図及び第７図に示されており、（
６）は光学ヘッドの光源である半導体レーザ、（７）は
光路を分岐するノ・−７プリズム、（８）は拡散光を平
行光に変換したりあるいは平行光を集束光に変換したり
するコリメートレンズ、（９）は光を集光する対物レン
ズ、 Ｑｌはホルダ、αＢはディスク（図示せず）上の
光スポットの焦点ズレを検出するためにホルダａ１に収
納されて（・る円筒レンズ、（りは光検知器、（５）は
レーザビームである。The photodetector adjustment mechanism in the optical head of a conventional optical disc player is shown in FIGS. 6 and 7.
6) is a semiconductor laser that is the light source of the optical head, (7) is a No.-7 prism that branches the optical path, and (8) is used to convert diffused light into parallel light or convert parallel light into focused light. A collimating lens, (9) is an objective lens for condensing light, Ql is a holder, and αB is a cylindrical lens housed in holder a1 to detect a focal shift of a light spot on a disk (not shown). , (ri is a photodetector, and (5) is a laser beam.
従って、光検知器ｔｌｌ上の光スポットの調整は光検知
器（１１を光軸と垂直なＸ−Ｚ面内で動かす二軸調整と
１円筒レンズαＢを収納しているホルダＯＩを光軸であ
るＹ軸方向に動かすＹ軸方向の調整とに分能されて（・
る。Therefore, the light spot on the photodetector tll can be adjusted by two-axis adjustment by moving the photodetector (11) in the X-Z plane perpendicular to the optical axis, and by moving the holder OI containing the cylindrical lens αB along the optical axis. It is divided into adjusting the Y-axis direction by moving it in a certain Y-axis direction (・
Ru.
従来の光検知器調整機構は前記のように構成をして（・
るので、光検知器上の光スポットの調整ヲ行う場合、光
検知器を光軸と垂直なＸ−Ｙ面内で動かす二軸調整と１
円筒レンズを収納しているホルダを光軸であるＹ軸方向
に動かすＹ軸方向の調整とを交互に繰返しておこなわな
ければならず。The conventional photodetector adjustment mechanism is configured as described above (・
Therefore, when adjusting the light spot on the photodetector, two-axis adjustment is required: one is to move the photodetector in the X-Y plane perpendicular to the optical axis, and the other is to adjust the light spot on the photodetector.
Adjustment in the Y-axis direction, in which the holder housing the cylindrical lens is moved in the Y-axis direction, which is the optical axis, must be repeated alternately.
調整に時間がかかる問題点を有していた。The problem was that it took a long time to make adjustments.
この発明は前記のような従来のもののもつ問題点を解決
して、光検知器上の光スポットの調整が簡単で、繰り返
し調整が不要になって、調整時間の短縮できる光検知器
調整機構を提供することを目的とするものである。This invention solves the problems of the conventional ones as described above, and provides a photodetector adjustment mechanism that allows easy adjustment of the light spot on the photodetector, eliminates the need for repeated adjustments, and shortens the adjustment time. The purpose is to provide
この発明に係る光検知器調整機構は、光ビームの光軸に
対して垂直になるように光検知器を固定した基板と光学
ヘッドベースとの間にバネを配設したものでらる〇
〔作用〕
この発明においては、光ビームの光スポットが光検知器
の面内に位置するように基板を動かすことにより、光検
知器を光軸に垂直な面内で調整すると共に、バネを弾圧
して基板を動かすことにより、光検知器を光軸方向に調
整する。The photodetector adjustment mechanism according to the present invention includes a spring disposed between an optical head base and a substrate on which a photodetector is fixed so as to be perpendicular to the optical axis of a light beam. Effect] In this invention, by moving the substrate so that the light spot of the light beam is located within the plane of the photodetector, the photodetector is adjusted in a plane perpendicular to the optical axis, and the spring is compressed. The photodetector is adjusted in the optical axis direction by moving the substrate.
以下、この発明の実施例を図面に基づいて説明する。第
１図〜第５図はこの発明の実施例を示しており、（１）
は光検知器である。光検知器（１１は角穴（２ａ）Ｉｃ
よって位置決めされながら基板（２；に固定されている
。基板（２）と光学ヘッドベースα２との間には板バネ
（３）が配設されている。基板（２）には板バネ（３）
を固定するための雌ネジ（２０）、 （２（Ｌ）が設け
られている。板バネ（３）には板バネ（３）を基板（２
）に固定するときに使用する雄ネジ（４）ヲ通すための
長穴（ｓｂ） 。Embodiments of the present invention will be described below based on the drawings. 1 to 5 show embodiments of this invention, (1)
is a photodetector. Photodetector (11 is square hole (2a) Ic
Therefore, it is fixed to the substrate (2) while being positioned. A plate spring (3) is disposed between the substrate (2) and the optical head base α2. )
Female screws (20) and (2(L)) are provided for fixing the plate spring (3) to the board (2).
) A long hole (sb) for passing the male screw (4) used when fixing to the
（３Ｃ）とレーザビーム（５１を通す穴（３ｄ）とが設
けられている。（２ｂ）は板バネ（田の押し当たる基板
＋２１の基準面、 （５ａ）は基板（２）に当たる板バ
ネ（３）の当て面である。板バネ（３）は当て面（３ａ
）。を基板（２）の基準［ｉｋｉ （２ｂ）に当てた初
期の状態において、光検知器（１）の光軸方向の位置が
所望の位置よりも適当な量だけズレるように成形され又
いる。(3C) and a hole (3d) through which the laser beam (51 passes) are provided. (2b) is the reference plane of the board + 21 that the plate spring (field presses against), and (5a) is the board spring (21) that hits the board (2). 3).The plate spring (3) is the contact surface (3a).
). The photodetector (1) is shaped so that the position of the photodetector (1) in the optical axis direction is shifted by an appropriate amount from the desired position in the initial state where the photodetector (2b) is applied to the reference (2b) of the substrate (2).
最初、レーザビーム（５）の光スポットが光検知器（１
）の市内のＰＪｒ望のところに位置するように基板（２
）を動ハ・し、光検知器ｆｉ＋をレーザビーム（５）の
光軸に垂直な囲（Ｘ−Ｚ面）内で調整する。次に板バネ
（３）を弾圧して第５図の矢印Ａの方向に基＆（２）を
動かし、光検知器（１）の光軸方向（Ｙ軸方向）の位置
が所望の位置になるように調整する。調整の終了後、雄
ネジ（４）によって基板（２）に板バネ（３）を固定す
る。Initially, the light spot of the laser beam (5) is placed on the photodetector (1).
) so that the board (2) is located in the city of PJR
) to adjust the photodetector fi+ within a circle (X-Z plane) perpendicular to the optical axis of the laser beam (5). Next, press the leaf spring (3) to move the base & (2) in the direction of arrow A in Figure 5, so that the optical axis direction (Y-axis direction) of the photodetector (1) is at the desired position. Adjust accordingly. After the adjustment is completed, the leaf spring (3) is fixed to the board (2) using the male screw (4).
なお、上記実施例では板バネを使用しているが。Note that in the above embodiment, a plate spring is used.
板バネの代わりにコイルバネを使用したものであっても
よ（・。また、雄ネジによって基板に板バネを固定する
代わりに、板バネと基板とを溶接や接着によって固定し
てもよい。A coil spring may be used instead of a plate spring (.Also, instead of fixing the plate spring to the board with a male screw, the plate spring and the board may be fixed by welding or adhesive.
この発明は、光ビームの光軸に対して垂直になるように
光検知器を同定した基板と光学ヘッドベースとの間にバ
ネを配設しているので、光検知器を光軸に垂直な面内と
光軸方向とに調整でき、調整時間が短縮する効果を有し
ている。In this invention, a spring is disposed between the substrate on which the photodetector is identified and the optical head base so as to be perpendicular to the optical axis of the light beam. It can be adjusted both in-plane and in the optical axis direction, which has the effect of shortening the adjustment time.
また、この発明は光検知器を調整する際に他の光学部品
を動かす必倭がないので、光学ヘッドの構成が筒中にな
る効果を有している。Furthermore, the present invention has the effect that the optical head can be constructed in a cylinder since it is not necessary to move other optical parts when adjusting the photodetector.
第１図〜第５図はこの発明の実施例を示しており、第１
図は斜視図、第２図は正面図、第３図は第２図の１−！
線における断面図、第４図は板バネの平面図、第５図は
光検知器の調整の動作を示す説明図である。第６図及び
嬉１図は従来の光検知器調部機構を示しており、第６図
は斜視図、第１図は円筒レンズの斜視図である。
（１）は光検知器、（２）は基板、（３）は板バネ、（
５）はし−ザピーム、 （１３は光学ヘッドベースであ
る。
図中、同一符号は同−又は相当部分を示す。Figures 1 to 5 show embodiments of this invention.
The figure is a perspective view, Figure 2 is a front view, and Figure 3 is 1-! of Figure 2!
4 is a plan view of the leaf spring, and FIG. 5 is an explanatory diagram showing the adjustment operation of the photodetector. 6 and 1 show a conventional photodetector adjustment mechanism, FIG. 6 is a perspective view, and FIG. 1 is a perspective view of a cylindrical lens. (1) is a photodetector, (2) is a board, (3) is a leaf spring, (
(13 is an optical head base. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (4)
器を固定した基板と光学ヘッドベースとの間にバネを配
設したことを特徴とする光検知器調整機構。(1) A photodetector adjustment mechanism characterized in that a spring is disposed between an optical head base and a substrate on which a photodetector is fixed so as to be perpendicular to the optical axis of a light beam.
範囲第１項記載の光検知器調整機構。(2) The photodetector adjustment mechanism according to claim 1, wherein the spring is a plate spring.
雄ネジを通すための長穴と、光ビームを通すための穴と
を有していることを特徴とする特許請求の範囲第２項記
載の光検知器調整機構。(3) The leaf spring has an elongated hole for passing a male screw used when fixing the leaf spring to a board, and a hole for passing a light beam. The photodetector adjustment mechanism according to item 2.
ネジと螺合する雌ネジを有していることを特徴とする特
許請求の範囲第３項記載の光検知器調整機構。(4) The photodetector adjustment mechanism according to claim 3, wherein the board has a female thread that engages with a male thread used when fixing the leaf spring to the board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24034184A JPS61120351A (en) | 1984-11-14 | 1984-11-14 | Light detector adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24034184A JPS61120351A (en) | 1984-11-14 | 1984-11-14 | Light detector adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61120351A true JPS61120351A (en) | 1986-06-07 |
Family
ID=17058042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24034184A Pending JPS61120351A (en) | 1984-11-14 | 1984-11-14 | Light detector adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61120351A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172370A (en) * | 1990-09-14 | 1992-12-15 | Sharp Kabushiki Kaisha | Disk reproducing apparatus equipped with a pickup device capable of reading both sides of a disk |
| US5345432A (en) * | 1990-10-31 | 1994-09-06 | Kabushiki Kaisha Toshiba | Optical head |
| JPH07194704A (en) * | 1993-12-22 | 1995-08-01 | Wilson Cook Medical Inc | Adjustable type needle mechanism |
| JP2008298908A (en) * | 2007-05-30 | 2008-12-11 | Kyocera Mita Corp | Image writing timing adjusting mechanism and optical scanning apparatus with the same |
| JP2013033258A (en) * | 2012-08-24 | 2013-02-14 | Kyocera Document Solutions Inc | Substrate holding member and image forming apparatus with the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5745042B2 (en) * | 1977-02-24 | 1982-09-25 | ||
| JPS6031727B2 (en) * | 1978-09-11 | 1985-07-24 | 東京測範株式会社 | feeding device |
-
1984
- 1984-11-14 JP JP24034184A patent/JPS61120351A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5745042B2 (en) * | 1977-02-24 | 1982-09-25 | ||
| JPS6031727B2 (en) * | 1978-09-11 | 1985-07-24 | 東京測範株式会社 | feeding device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172370A (en) * | 1990-09-14 | 1992-12-15 | Sharp Kabushiki Kaisha | Disk reproducing apparatus equipped with a pickup device capable of reading both sides of a disk |
| US5345432A (en) * | 1990-10-31 | 1994-09-06 | Kabushiki Kaisha Toshiba | Optical head |
| JPH07194704A (en) * | 1993-12-22 | 1995-08-01 | Wilson Cook Medical Inc | Adjustable type needle mechanism |
| JP2008298908A (en) * | 2007-05-30 | 2008-12-11 | Kyocera Mita Corp | Image writing timing adjusting mechanism and optical scanning apparatus with the same |
| JP2013033258A (en) * | 2012-08-24 | 2013-02-14 | Kyocera Document Solutions Inc | Substrate holding member and image forming apparatus with the same |
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