JPH07235059A - Device for attaching photodetector for optical pickup - Google Patents
Device for attaching photodetector for optical pickupInfo
- Publication number
- JPH07235059A JPH07235059A JP2435994A JP2435994A JPH07235059A JP H07235059 A JPH07235059 A JP H07235059A JP 2435994 A JP2435994 A JP 2435994A JP 2435994 A JP2435994 A JP 2435994A JP H07235059 A JPH07235059 A JP H07235059A
- Authority
- JP
- Japan
- Prior art keywords
- photodetector
- plate surface
- plate
- optical
- block base
- 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
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、光ビームを用いて信号
再生、或いは信号記録を行う為の光ピックアップに備え
られている光検出器を光学ブロックベースに取り付ける
光検出器取付装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photodetector mounting device for mounting a photodetector provided in an optical pickup for performing signal reproduction or signal recording using a light beam on an optical block base.
【0002】[0002]
【従来の技術】ディスク等の信号記録媒体に光ビームを
用いて信号再生、或いは信号記録を行う為の光ピックア
ップにおいては、信号記録媒体の信号面で変調される光
ビームを受光する光検出器により信号記録媒体の信号面
上における光ビームのフォーカシング誤差を示すフォー
カシング誤差信号の調整を行う為に、或いは信号記録媒
体の信号トラックに対する光ビームのトラッキング誤差
を示すトラッキング誤差信号の調整を行う為に前記光検
出器を光ビームの光軸方向に変位させたり、或いは該光
検出器の面方向に変位させて光検出器の位置調整を行う
必要がある。2. Description of the Related Art In an optical pickup for performing signal reproduction or signal recording by using a light beam on a signal recording medium such as a disc, a photodetector for receiving a light beam modulated on the signal surface of the signal recording medium. In order to adjust the focusing error signal indicating the focusing error of the light beam on the signal surface of the signal recording medium or to adjust the tracking error signal indicating the tracking error of the light beam with respect to the signal track of the signal recording medium. It is necessary to adjust the position of the photodetector by displacing the photodetector in the optical axis direction of the light beam or displacing it in the plane direction of the photodetector.
【0003】ところで、従来の光ピックアップとして
は、例えば特開平3−260915号公報に示される如
く、光検出器を取り付ける取り付け板として断面U字状
の弾性体を用い、前記取り付け板の屈曲部を境にして光
学ブロックベースに固定される板面の側と異なる側の板
面に前記光検出器を取り付けるようにした光検出器取付
装置を用いたものが知られている。As a conventional optical pickup, for example, as disclosed in Japanese Patent Laid-Open No. 3-260915, an elastic body having a U-shaped cross section is used as a mounting plate for mounting a photodetector, and a bent portion of the mounting plate is used. There is known a device using a photodetector mounting device in which the photodetector is mounted on a plate surface on a side different from the plate surface side fixed to the optical block base.
【0004】この光検出器取付装置は、取り付け板の屈
曲度合を調節することにより光検出器の不要傾斜を抑え
て光検出器の光軸方向(Z軸方向)への調整を容易に行
うことが出来る。In this photodetector mounting device, an unnecessary inclination of the photodetector is suppressed by adjusting the bending degree of the mounting plate so that the photodetector can be easily adjusted in the optical axis direction (Z-axis direction). Can be done.
【0005】[0005]
【発明が解決しようとする課題】ところで、前述の光検
出器取付装置においては、光検出器に受光される光ビー
ムの光軸方向に直交する方向(X,Y軸方向)の調整が
光検出器の取り付け板を光学ブロックベースに固定する
為のネジを緩めた状態で行われ、その調整後にネジ締め
して光検出器を所定位置に固定する。その為、前記光検
出器取付装置においては、取り付け板が光学ブロックベ
ースに当接されていない不安定な状態でネジ締めが行わ
れ、そのネジ締めの際に前記取り付け板が回転し、X,
Y軸方向の調整がズレ易いという欠点があった。By the way, in the above-described photodetector mounting device, adjustment of the light beam received by the photodetector in the direction orthogonal to the optical axis direction (X, Y axis direction) is performed by the photodetection. This is done with the screws for fixing the mounting plate of the device to the optical block base loosened, and after the adjustment, tighten the screws to fix the photodetector in place. Therefore, in the photodetector mounting device, the screwing is performed in an unstable state where the mounting plate is not in contact with the optical block base, and when the screwing is performed, the mounting plate rotates and X,
There is a drawback that the adjustment in the Y-axis direction is easily misaligned.
【0006】[0006]
【課題を解決するための手段】本発明は、前述の欠点を
解消することを目的とした光ピックアップの光検出器取
付装置で、略断面U字状の取り付け板の屈曲部を境にし
て光学ブロックベースに取り付けられる側の板面に、Z
軸方向に切り起こされているとともに、X,Y軸方向に
変位させる調整用治具を嵌合させる突片を設けている。DISCLOSURE OF THE INVENTION The present invention is a photodetector mounting device for an optical pickup intended to solve the above-mentioned drawbacks, and is an optical device with a bending portion of a mounting plate having a substantially U-shaped cross section as a boundary. On the plate surface that is attached to the block base, Z
In addition to being cut and raised in the axial direction, there is provided a protruding piece into which an adjusting jig for displacing in the X and Y axis directions is fitted.
【0007】[0007]
【作用】本発明は、取り付け板の光学ブロックベースに
取り付けられる側の板面にZ軸方向に突片を突出させ、
前記突片に調整用治具を嵌合させて光検出器のX,Y軸
方向の位置調整を行うようにし、併せてその調整時に前
記調整用治具により前記板面を光学ブロックベースに押
し付けた状態にして取り付け板のネジ締めを行えるよう
にしている。According to the present invention, the projecting piece is projected in the Z-axis direction on the plate surface of the mounting plate that is mounted on the optical block base,
An adjustment jig is fitted to the protrusion to adjust the position of the photodetector in the X and Y axis directions, and at the same time, the plate surface is pressed against the optical block base by the adjustment jig during the adjustment. The mounting plate can be tightened with the screws in the closed position.
【0008】[0008]
【実施例】次に本発明の一実施例について図面を用いて
説明する。図1は本発明の一実施例を示す側面図、図2
はその正面図、図3はその分解斜視図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. 1 is a side view showing an embodiment of the present invention, and FIG.
Is a front view thereof, and FIG. 3 is an exploded perspective view thereof.
【0009】図において、1は光ピックアップを構成す
る各種光学素子が組み込まれる光学ブロックベースであ
り、光学ブロックベース1には光ビーム(レーザー光)
を発生する光源となるレーザーダイオード2と、該レー
ザーダイオード2から発生される光ビームを回折する回
折格子3と、該回折格子3を通過した光ビームの光路を
分割する為及びフォーカス制御に利用する非点収差を発
生させる為の平行平板より成るハーフミラー4と、該ハ
ーフミラー4により反射された光ビームをディスクD面
に直交する方向に反射して屈曲する反射ミラー5と、該
反射ミラー5により反射された光ビームをディスクDの
信号面上に合焦させる為の対物レンズ6と、ディスクD
の信号面により変調され、反射されるとともに、前記ハ
ーフミラー4を透過した光ビームが受光される光検出器
7とが取り付けられている。In the figure, reference numeral 1 denotes an optical block base in which various optical elements constituting an optical pickup are incorporated. The optical block base 1 has a light beam (laser light).
Is used for dividing the optical path of the light beam that has passed through the diffraction grating 3 and the diffraction grating 3 that diffracts the light beam generated by the laser diode 2, and is used for focus control. A half mirror 4 made of a parallel plate for generating astigmatism, a reflection mirror 5 for bending the light beam reflected by the half mirror 4 in a direction orthogonal to the disk D surface, and the reflection mirror 5. The objective lens 6 for focusing the light beam reflected by the disc D on the signal surface of the disc D;
And a photodetector 7 that receives the light beam that has been modulated and reflected by the signal surface of (1) and has been transmitted through the half mirror 4.
【0010】8は光検出器7が半田付けさせるプリント
基板、9はリン青銅から成る剛性の高い金属板の板金加
工により略断面U字状に屈曲して構成された取り付け板
である。Reference numeral 8 is a printed circuit board to which the photodetector 7 is soldered, and reference numeral 9 is a mounting plate formed by bending a metal plate made of phosphor bronze having high rigidity into a substantially U-shaped section.
【0011】前記取り付け板9は、屈曲部を境にして一
方側となる第1板面9aが光学ブロックベース1の取り
付け面1aに密接されるように配置され、前記第1板面
9aに形成された透孔10a,10bを介して光学ブロ
ックベース1に形成されたネジ孔11a,11bにそれ
ぞれ固定ネジ12a,12bを螺合することにより前記
第1板面9aで前記光学ブロックベース1に固定され
る。また、前記第1板面9aには、周縁部の所定の2箇
所に突片13a,13bが光検出器7に受光される光ビ
ームの光軸方向(Z軸方向)に切り起こされて形成され
ている。The mounting plate 9 is arranged such that a first plate surface 9a on one side of the bent portion is abutted against the mounting surface 1a of the optical block base 1 and is formed on the first plate surface 9a. Fixed to the optical block base 1 by the first plate surface 9a by screwing fixing screws 12a and 12b into screw holes 11a and 11b formed in the optical block base 1 through the formed through holes 10a and 10b, respectively. To be done. Further, on the first plate surface 9a, projecting pieces 13a and 13b are formed by cutting and raising in the optical axis direction (Z-axis direction) of the light beam received by the photodetector 7 at two predetermined positions on the peripheral edge. Has been done.
【0012】一方、取り付け板9の屈曲部を境にして他
方側となる第2板面9bには、ダボ14a,14bが形
成され、そのダボ14a,14bがそれぞれ対応するプ
リント基板8の孔15a,15bに挿入され、プリント
基板8は取り付け位置が設定されて取り付け板9の第2
板面9bに取り付けられている。On the other hand, dowels 14a and 14b are formed on the second plate surface 9b on the other side of the bent portion of the mounting plate 9 as a boundary, and the holes 15a of the printed circuit board 8 to which the dowels 14a and 14b correspond respectively. , 15b, the printed circuit board 8 is set to the mounting position, and the second position of the mounting plate 9 is set.
It is attached to the plate surface 9b.
【0013】また、前記第2板面9bには、取り付け板
9の屈曲部の反対側に先端が尖っている調整ネジ16が
螺合され、調整ネジ16の先端が第1板面9aに当接さ
れている。その為、前記調整ネジ16を回し、調整ネジ
16の第2板面9bへの螺合度合を調整して屈曲部の屈
曲率を調整することにより光検出器7のZ軸方向の位置
調整を容易に行うことが出来る。すなわち、前記調整ネ
ジ16を締めてゆくと、第2板面9bが第1板面9aに
近付く方向に変位し、一方、前記調整ネジ16を緩めて
ゆくと、逆に前記第2板面9bが前記第1板面9aから
離間する方向に変位するので、前記第2板面9bにプリ
ント基板8を介して取り付けられている光検出器7のZ
軸方向の位置調整を行うことが出来る。An adjusting screw 16 having a sharp tip is screwed into the second plate surface 9b on the side opposite to the bent portion of the mounting plate 9, and the tip of the adjusting screw 16 contacts the first plate surface 9a. It is touched. Therefore, the adjusting screw 16 is rotated to adjust the screwing degree of the adjusting screw 16 to the second plate surface 9b to adjust the bending rate of the bent portion, thereby adjusting the position of the photodetector 7 in the Z-axis direction. It can be done easily. That is, when the adjusting screw 16 is tightened, the second plate surface 9b is displaced toward the first plate surface 9a, and when the adjusting screw 16 is loosened, the second plate surface 9b is reversed. Is displaced in the direction away from the first plate surface 9a, the Z of the photodetector 7 attached to the second plate surface 9b via the printed circuit board 8 is removed.
It is possible to adjust the position in the axial direction.
【0014】次に、光検出器7に受光される光ビームの
光軸方向に直交する方向(X,Y軸方向)の調整に付い
て説明する。光検出器7のX,Y軸方向の調整には、図
3に示す如く、ダボ14a,14bにそれぞれ対応した
形状の挿入穴17a,17bが先端に形成された治具1
8a,18bを用いる。Next, adjustment in the directions (X and Y axis directions) orthogonal to the optical axis direction of the light beam received by the photodetector 7 will be described. For adjustment of the photodetector 7 in the X and Y axis directions, as shown in FIG. 3, the jig 1 having insertion holes 17a and 17b having shapes corresponding to the dowels 14a and 14b, respectively, is formed at the tip.
8a and 18b are used.
【0015】前記治具18a,18bは、挿入穴17
a,17bにそれぞれダボ14a,14bを嵌合させた
状態で取り付け板9の第1板面9aを光学ブロックベー
ス1に押し付け、かつ2つが同時に回転されることによ
り前記取り付け板9を回転させ、該取り付け板9を
X,Y軸方向に変位させる。その為、前記取り付け板9
の回転に伴って光検出器7がX,Y軸方向に変位され、
前記光検出器7のX,Y軸方向の調整を行うことが出来
る。そして、この調整が完了した時点で、固定ネジ12
a,12bの締め付けを行い、前記取り付け板9の光学
ブロックベース1への固定を行う。すなわち、前記固定
ネジ12a,12bの締め付け時において、前記取り付
け板9は、治具18a,18bにより第1板面9aで光
学ブロックベース1に押し付けられた状態であるので、
前記固定ネジ12a,12bを締め付けることにより前
記取り付け板9に回転力が印加されても光検出器7の調
整が完了された位置に保持されて前記取り付け板9が固
定されることになる。The jigs 18a and 18b have insertion holes 17
The first plate surface 9a of the mounting plate 9 is pressed against the optical block base 1 with the dowels 14a and 14b fitted to the a and 17b, respectively, and the mounting plate 9 is rotated by rotating the two simultaneously. The mounting plate 9
Displace in the X and Y axis directions. Therefore, the mounting plate 9
The photodetector 7 is displaced in the X and Y axis directions with the rotation of
The photodetector 7 can be adjusted in the X and Y axis directions. Then, when this adjustment is completed, the fixing screw 12
The mounting plates 9 are fixed to the optical block base 1 by tightening a and 12b. That is, since the mounting plate 9 is pressed against the optical block base 1 by the first plate surface 9a by the jigs 18a and 18b when the fixing screws 12a and 12b are tightened,
By tightening the fixing screws 12a and 12b, even if a rotational force is applied to the mounting plate 9, the photodetector 7 is held at the position where the adjustment is completed and the mounting plate 9 is fixed.
【0016】[0016]
【発明の効果】以上述べた如く、本発明に依れば、取り
付け板の光学ブロックベースに取り付けられる側の第1
板面にZ軸方向に突出される突片を設け、その突片に調
整用治具を嵌合させて前記取り付け板を回転することに
より光検出器のZ軸方向の調整を行うようにし、その調
整後における光学ブロックベースへの前記取り付け板の
固定時に前記調整用治具により前記第1板面を光学ブロ
ックベースに押し付けるようにしているので、前記取り
付け板の固定時にネジの締め付けにより該取り付け板が
回転されることが防止され、光検出器がX,Y軸方向の
調整が完了した位置からズレることを防止して前記取り
付け板を固定することが出来る。As described above, according to the present invention, the first side of the mounting plate on which the optical block base is mounted is mounted.
A protrusion protruding in the Z-axis direction is provided on the plate surface, an adjusting jig is fitted on the protrusion, and the mounting plate is rotated to adjust the photodetector in the Z-axis direction. Since the first jig surface is pressed against the optical block base by the adjusting jig when the mounting plate is fixed to the optical block base after the adjustment, the mounting is performed by tightening the screw when fixing the mounting plate. The plate can be prevented from rotating, the photodetector can be prevented from being displaced from the position where the adjustment in the X and Y axis directions has been completed, and the mounting plate can be fixed.
【図1】本発明の一実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of the present invention.
【図2】図1の正面図である。FIG. 2 is a front view of FIG.
【図3】図1及び図2に示す光ピックアップの光検出器
取付装置の分解斜視図である。FIG. 3 is an exploded perspective view of a photodetector mounting device of the optical pickup shown in FIGS. 1 and 2.
1 光学ブロックベース 7 光検出器 8 プリント基板 9 取り付け板 9a 第1板面 9b 第2板面 12a,12b 固定ネジ 13a,13b 突片 14a,14b ダボ 16 調整ネジ 18a,18b 治具 1 Optical Block Base 7 Photodetector 8 Printed Circuit Board 9 Mounting Plate 9a First Plate Surface 9b Second Plate Surface 12a, 12b Fixing Screw 13a, 13b Projecting Piece 14a, 14b Dowel 16 Adjusting Screw 18a, 18b Jig
───────────────────────────────────────────────────── フロントページの続き (72)発明者 内田 光彦 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 (72)発明者 岩戸 省三 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuhiko Uchida 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Inventor Shozo Iwato, 2-chome Keihan Hondori, Moriguchi City, Osaka No. 5-5 Sanyo Electric Co., Ltd.
Claims (1)
ームを受光する光検出器を各種の光学素子が配設された
光学ブロックベースに取り付ける光ピックアップの光検
出器取付装置であって、金属板の板金加工により略断面
U字状に屈曲して構成されるとともに、そのU字状の屈
曲部を境にして一方側となる第1板面が前記光学ブロッ
クベースにネジ止めされて取り付けられ、前記屈曲部を
境にして他方側となる第2板面に前記光検出器が取り付
けられる取り付け板と、前記第2板面に螺合され、その
螺合の度合いにより前記屈曲部の屈曲率を調整して前記
第2板面を光検出器に受光される光ビームの光軸方向に
変位させる調整ネジと、前記第1板面に前記光軸方向に
切り起こされて形成されているとともに、前記取り付け
板を前記光軸方向に直交する方向に変位させる調整用治
具を嵌合させる突片とを備えたことを特徴とする光ピッ
クアップの光検出器取付装置。1. A photodetector mounting device for an optical pickup, wherein a photodetector for receiving a light beam modulated on a signal surface of a signal recording medium is mounted on an optical block base provided with various optical elements. It is constructed by bending a metal plate into a substantially U-shaped section by sheet metal working, and a first plate surface, which is one side with the U-shaped bent portion as a boundary, is screwed and attached to the optical block base. And the mounting plate on which the photodetector is mounted on the second plate surface on the other side of the bent portion as a boundary, and the second plate surface is screwed together, and the bent portion is bent depending on the degree of screwing. An adjusting screw that adjusts the ratio to displace the second plate surface in the optical axis direction of the light beam received by the photodetector, and is formed by cutting and raising the first plate surface in the optical axis direction. Together with the mounting plate in the optical axis direction A photodetector mounting device for an optical pickup, comprising: a protruding piece into which an adjusting jig for displacing in a direction orthogonal to each other is fitted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2435994A JP2859120B2 (en) | 1994-02-22 | 1994-02-22 | Optical pickup mounting device for optical pickup |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2435994A JP2859120B2 (en) | 1994-02-22 | 1994-02-22 | Optical pickup mounting device for optical pickup |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07235059A true JPH07235059A (en) | 1995-09-05 |
JP2859120B2 JP2859120B2 (en) | 1999-02-17 |
Family
ID=12136009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2435994A Expired - Fee Related JP2859120B2 (en) | 1994-02-22 | 1994-02-22 | Optical pickup mounting device for optical pickup |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2859120B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1154002A (en) * | 1997-07-31 | 1999-02-26 | Keyence Corp | Fixing tool and fixing mechanism |
US6985423B2 (en) | 2001-12-27 | 2006-01-10 | Funai Electric Co., Ltd. | Optical pickup device with defocus adjuster |
-
1994
- 1994-02-22 JP JP2435994A patent/JP2859120B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1154002A (en) * | 1997-07-31 | 1999-02-26 | Keyence Corp | Fixing tool and fixing mechanism |
US6985423B2 (en) | 2001-12-27 | 2006-01-10 | Funai Electric Co., Ltd. | Optical pickup device with defocus adjuster |
Also Published As
Publication number | Publication date |
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JP2859120B2 (en) | 1999-02-17 |
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