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 |
|---|---|
| JP2859120B2 (en) | 1999-02-17 |
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