JP2004047106A - Method for manufacturing disk recorder/player - Google Patents

Method for manufacturing disk recorder/player Download PDF

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JP2004047106A
JP2004047106A JP2003343530A JP2003343530A JP2004047106A JP 2004047106 A JP2004047106 A JP 2004047106A JP 2003343530 A JP2003343530 A JP 2003343530A JP 2003343530 A JP2003343530 A JP 2003343530A JP 2004047106 A JP2004047106 A JP 2004047106A
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objective lens
light
receiving element
recording medium
driving device
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JP3802022B2 (en
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Hideki Nakada
中田　秀輝
Hirotoshi Tomita
冨田　浩稔
Hideki Aiko
愛甲　秀樹
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To realize a small/thin optical head and a disk recorder/player by drastically reducing the overall height of an optical head. <P>SOLUTION: An integrated unit 7 is fixed to an optical bench 16. Relative positions and optical axes among a semiconductor laser, an objective lens and a multi-divided photodetector are adjusted in adjusting a focus error signal and a tracking error signal of the optical head by planarly adjusting an objective lens driving device 13 in a radial direction (X direction) and in a tangential direction (Y direction). <P>COPYRIGHT: (C)2004,JPO

Description

　本発明は、ディスク状記録媒体に光スポットを投影して光学的に情報を記録再生するディスク記録再生装置の製造方法に関するものである。 The present invention relates to a method for manufacturing a disk recording / reproducing apparatus for optically recording / reproducing information by projecting a light spot on a disk-shaped recording medium.

　近年、ディスク記録再生装置は、ＤＶＤ・ＭＤ・ＣＤ・ＣＤ−ＲＯＭ用などその用途は年々多様化すると共に益々高密度・小型・高性能・高品質・高付加価値化している。特に記録可能な光磁気メディアを利用したディスク記録再生装置においては、データ用・映像記録用の需要は大きく増加傾向にあり、より一層の小型・薄型・高性能・高記録密度化が求められている。 In recent years, disk recording / reproducing devices, such as those for DVD, MD, CD, and CD-ROM, have been diversifying year by year, and are becoming more and more dense, compact, high-performance, high-quality, and high-value-added. In particular, in a disk recording / reproducing apparatus using a recordable magneto-optical medium, the demand for data / video recording is on a tremendous increase, and a further reduction in size, thickness, performance, and recording density is required. I have.

　従来、光磁気ディスク用光学ヘッドに関する技術としては、数多くの報告がなされている。 Conventionally, there have been many reports on the technology relating to an optical head for a magneto-optical disk.

　以下、図面を参照しながら、従来のディスク記録再生装置の一例として、光磁気ディスク用の光学ヘッドを説明する。 Hereinafter, an optical head for a magneto-optical disk will be described as an example of a conventional disk recording / reproducing apparatus with reference to the drawings.

　図１０、図１１、図１２および図１３は従来の光学ヘッドの概略的な構成図およびその動作原理を説明する図である。 FIGS. 10, 11, 12, and 13 are schematic diagrams of a conventional optical head and a diagram for explaining the operation principle thereof.

　図１０、１１、図１２および図１３において、１はシリコン基板、２はシリコン基板１上に固定された半導体レーザ、３はシリコン基板１上に形成された多分割光検出器、４は樹脂パッケージ、５は樹脂で成形されたホログラム素子（回折格子）、６はビームスプリッタ６ａ、折り返しミラー６ｂ、偏光分離素子６ｃより構成された複合素子、８はシリコン基板１、半導体レーザ２、多分割光検出器３、パッケージ４、回折格子５、複合素子６より構成される集積ユニット７を保持するホルダ、９は反射ミラー、１０は対物レンズホルダー１１に固定された対物レンズ、１２は磁気光学効果を有する光磁気記録媒体、１３は対物レンズを光磁気記録媒体１２のフォーカスおよびラジアル方向に駆動する対物レンズ駆動装置、１４は対物レンズ駆動装置１３の構成要素となるベース、１５はアオリネジ、１６は光学台、１７は多分割光検出機３上に形成されたフォーカス誤差信号検出用の光スポット、１８は多分割光検出機３上に形成されたトラッキング誤差信号検出用の光スポット、１９は多分割光検出器３上に形成されるメインビーム（Ｐ偏光）、２０は多分割光検出器３上に形成されるメインビーム（Ｓ偏光）、２１はフォーカス誤差信号受光領域、２２および２３はトラッキング誤差信号受光領域、２４は情報信号受光領域、２５は減算器、２６は加算器、２７および２８はフォーカス誤差信号検出用の光スポットの焦点である。 10, 11, 12 and 13, 1 is a silicon substrate, 2 is a semiconductor laser fixed on the silicon substrate 1, 3 is a multi-segmented photodetector formed on the silicon substrate 1, and 4 is a resin package. Reference numeral 5 denotes a hologram element (diffraction grating) formed of a resin, 6 denotes a composite element including a beam splitter 6a, a folding mirror 6b, and a polarization separation element 6c; 8 denotes a silicon substrate 1, a semiconductor laser 2, and multi-divided light detection A holder for holding an integrated unit 7 composed of a container 3, a package 4, a diffraction grating 5, and a composite element 6, 9 is a reflection mirror, 10 is an objective lens fixed to an objective lens holder 11, and 12 has a magneto-optical effect A magneto-optical recording medium, 13 is an objective lens driving device for driving the objective lens in the focusing and radial directions of the magneto-optical recording medium 12, and 14 is an objective lens. A base which is a component of the driving device 13, 15 is a tilt screw, 16 is an optical table, 17 is a light spot for detecting a focus error signal formed on the multi-segment photodetector 3, and 18 is a multi-segment photo detector 3. , A main beam (P-polarized light) formed on the multi-segment photodetector 3, and a main beam (S) formed on the multi-segment photodetector 3. Polarization), 21 is a focus error signal light receiving area, 22 and 23 are tracking error signal light receiving areas, 24 is an information signal light receiving area, 25 is a subtractor, 26 is an adder, and 27 and 28 are light spots for detecting a focus error signal. Is the focus.

　以上のように構成された従来例について以下その動作について説明を行う。 The operation of the conventional example configured as described above will be described below.

　半導体レーザ２より発せられた光は、ホログラム素子５により異なる複数の光束に分離される。異なる複数の光束は複合素子６のビームスプリッタ６ａを透過し、反射ミラー９で反射され対物レンズホルダー１１に固定された対物レンズ１０により、光磁気記録媒体１２上に直径１ミクロン程度の光スポット３０として集光される。 (4) The light emitted from the semiconductor laser 2 is separated by the hologram element 5 into a plurality of different light beams. The plurality of different light beams pass through the beam splitter 6a of the composite element 6, are reflected by the reflection mirror 9, and are fixed on the objective lens holder 11 by the objective lens 10 to form a light spot 30 having a diameter of about 1 micron on the magneto-optical recording medium 12. As light.

　また複合素子６のビームスプリッタ６ａにより反射された光束はレーザモニタ用受光素子（図示せず）に入射し半導体レーザ２の駆動電流を制御する。 {Circle around (4)} The light beam reflected by the beam splitter 6a of the composite element 6 is incident on a laser monitoring light receiving element (not shown) to control the driving current of the semiconductor laser 2.

　光磁気記録媒体１２からの反射光は、逆の経路をたどり、複合素子６のビームスプリッタ６ａにより反射分離されて、折り返しミラー６ｂ、偏光分離素子６ｃに入射する。 (4) The reflected light from the magneto-optical recording medium 12 follows the reverse path, is reflected and separated by the beam splitter 6a of the composite device 6, and enters the return mirror 6b and the polarization separating device 6c.

　半導体レーザ２は、図１１（Ａ）において紙面に平行な偏光方向となるよう設置されており、入射光は偏光分離素子６ｃにより、偏光方向を４５度回転させるとともに互いに直交する２つの偏光成分の光束に分離され、情報信号受光領域２４に入射する。 The semiconductor laser 2 is installed so as to have a polarization direction parallel to the paper surface in FIG. 11 (A), and the incident light is rotated by 45 degrees by the polarization separation element 6c and two polarization components orthogonal to each other. The light is separated into light beams and enters the information signal light receiving region 24.

また情報記録媒体１２からの反射光のうちビームスプリッタ６ａを透過した光束は回折格子５により複数の光束に分離されフォーカス誤差信号受光領域２１とトラッキング誤差信号受光領域２２および２３へ集光する。   Of the light reflected from the information recording medium 12, the light transmitted through the beam splitter 6a is split into a plurality of light by the diffraction grating 5 and condensed on the focus error signal light receiving area 21 and the tracking error signal light receiving areas 22 and 23.

　フォーカスサーボはいわゆるＳＳＤ法で行い、トラッキングサーボはいわゆるプッシュプル法で行う。 Focus servo is performed by the so-called SSD method, and tracking servo is performed by the so-called push-pull method.

　さらに、Ｐ偏光からなるメインビーム１９とＳ偏光からなるメインビーム２０の差を取ることにより、差動検出法による光磁気ディスク情報信号の検出が可能となる。さらに、それらの和をとることにより、プレピット信号の検出が可能となる。 (4) Further, by taking the difference between the main beam 19 composed of P-polarized light and the main beam 20 composed of S-polarized light, it is possible to detect a magneto-optical disk information signal by a differential detection method. Further, by taking the sum of them, it is possible to detect a pre-pit signal.

反射ミラー９は光学台１６に固定され、集積ユニット７はホルダ８に接着固定され、光学台１６の端面に固定される。   The reflection mirror 9 is fixed to the optical bench 16, and the integrated unit 7 is fixedly adhered to the holder 8, and is fixed to the end surface of the optical bench 16.

　以上のように構成されるディスク記録再生装置において、光磁気記録媒体からの反射光により所望の検出信号を得るために、組立時に半導体レーザ２と対物レンズ１０と多分割光検出器３の相対位置調整が行われる。 In the disk recording / reproducing apparatus configured as described above, in order to obtain a desired detection signal by reflected light from the magneto-optical recording medium, the relative positions of the semiconductor laser 2, the objective lens 10, and the multi-segmented photodetector 3 during assembly. Adjustments are made.

　これらの相対位置調整に関して、上記の従来の装置においては、多分割光検出器３のＺ’軸方向（光軸方向）の位置は、受光面が光スポットの焦点２７および２８の略中間に位置するように光学台１６とホルダ８との寸法を規定することにより一義的に決定される。また、フォーカス誤差信号およびトラッキング誤差信号の調整は、外部治具によりホルダー８を保持し、集積ユニット７をＸ方向およびＹ方向に移動することにより、トラッキング誤差信号受光領域２２および２３の出力が略均一となるように調整される。 With respect to these relative position adjustments, in the above-described conventional apparatus, the position of the multi-segmented photodetector 3 in the Z ′ axis direction (optical axis direction) is such that the light receiving surface is located substantially at the center between the focal points 27 and 28 of the light spot. It is uniquely determined by defining the dimensions of the optical bench 16 and the holder 8 so as to perform the above. The focus error signal and the tracking error signal are adjusted by holding the holder 8 with an external jig and moving the integrated unit 7 in the X and Y directions, so that the outputs of the tracking error signal light receiving regions 22 and 23 are substantially reduced. Adjusted to be uniform.

一方、光磁気記録媒体１２と対物レンズ１０との相対傾き調整は、アオリネジ１５を回転させ、対物レンズ駆動装置１３の構成部品であるベース１４の球面摺動部と光学台１６の球面摺動部とを接触させベース１４を回動させるいわゆる球面アオリにより実施する。この時の回転中心は対物レンズ１０の主点１０ａとする。図１０、図１３においてθＲはラジアル方向のスキュー調整をまたθＴはタンジェンシャル方向のスキュー調整を示す。   On the other hand, the relative inclination between the magneto-optical recording medium 12 and the objective lens 10 is adjusted by rotating the tilt screw 15 so that the spherical sliding portion of the base 14 and the spherical sliding portion of the optical base 16 which are components of the objective lens driving device 13 are rotated. Are brought into contact with each other to rotate the base 14, so-called spherical tilt. The center of rotation at this time is the principal point 10a of the objective lens 10. 10 and 13, θR indicates skew adjustment in the radial direction, and θT indicates skew adjustment in the tangential direction.

しかしながら上記の従来の構成では、半導体レーザ２と対物レンズ１０と多分割光検出器３の相対位置調整を、集積ユニット７を保持するホルダー８をＸ軸方向及びＹ軸方向に移動することにより行っていたので、その調整しろを予め確保しておく必要がある。特にＹ軸方向への調整しろはそのまま光学ヘッドの全高（光磁気記録媒体の厚み方向の高さ）の増加を招く。   However, in the above-described conventional configuration, the relative positions of the semiconductor laser 2, the objective lens 10, and the multi-segmented photodetector 3 are adjusted by moving the holder 8 holding the integrated unit 7 in the X-axis direction and the Y-axis direction. Therefore, it is necessary to secure the adjustment margin in advance. Particularly, the adjustment margin in the Y-axis direction directly increases the overall height of the optical head (the height in the thickness direction of the magneto-optical recording medium).

　また、集積ユニット７は小さいためにこれを単独で位置調整することは困難であり、集積ユニット７を保持するホルダー８を介して位置調整することが必要である。このため、ホルダー８のＹ軸方向の肉厚の分も光学ヘッド全高の増加になる。 Since the stacking unit 7 is small, it is difficult to adjust the position of the stacking unit 7 alone, and it is necessary to adjust the position of the stacking unit 7 via the holder 8 that holds the stacking unit 7. For this reason, the thickness of the holder 8 in the Y-axis direction also increases the overall height of the optical head.

　従って、従来の構成で半導体レーザ２と対物レンズ１０と多分割光検出器３の相対位置調整を行う限り、光学ヘッドおよびディスク記録再生装置の小型化、薄型化が困難になるという問題を有していた。 Therefore, as long as the relative positions of the semiconductor laser 2, the objective lens 10, and the multi-segmented photodetector 3 are adjusted in the conventional configuration, it is difficult to reduce the size and thickness of the optical head and the disk recording / reproducing apparatus. I was

　本発明は上記従来の問題点に鑑み、集積ユニット７を光学台１６に直接固定してホルダー８を廃止するとともに、光学台１６およびベース１４の球面摺動部を廃止する構成とすることにより、光学ヘッド全高を大幅に低減して、小型・薄型のディスク記録再生装置を実現することができるディスク記録再生装置の製造方法を提供することを目的とする。 In view of the above-described conventional problems, the present invention eliminates the holder 8 by directly fixing the integrated unit 7 to the optical bench 16 and eliminates the spherical sliding portion of the optical bench 16 and the base 14, An object of the present invention is to provide a method of manufacturing a disk recording / reproducing apparatus capable of realizing a small and thin disk recording / reproducing apparatus by greatly reducing the overall height of an optical head.

　本発明は、上記の目的を達成するために以下の構成とする。 The present invention has the following configuration to achieve the above object.

　即ち、本発明の第１の構成にかかるディスク記録再生装置の製造方法は、光源と、円盤状情報記録媒体からの反射光を受光する受光素子と、前記円盤状情報記録媒体へ光を集光する対物レンズと、前記対物レンズを保持し前記円盤状情報記録媒体のフォーカスおよびラジアル方向に前記対物レンズを駆動する対物レンズ駆動装置と、前記光源および前記受光素子を固定する光学台とを備えた備えたディスク記録再生装置の製造方法であって、前記光学台に前記光源および前記受光素子を固定した状態で、前記受光素子で検出した信号量に応じて、前記対物レンズ駆動装置を前記対物レンズに入射する光束の光軸と略直交する平面内で移動した後、前記光学台と接着することにより、前記円盤状情報記録媒体からの反射光により所望の検出信号を得るための、前記光源と前記対物レンズと前記受光素子の相対位置調整を行うことを特徴とする。 That is, a method of manufacturing a disk recording / reproducing apparatus according to the first configuration of the present invention includes a light source, a light receiving element for receiving light reflected from a disc-shaped information recording medium, and condensing light on the disc-shaped information recording medium. An objective lens, an objective lens driving device that holds the objective lens and drives the objective lens in the focus and radial directions of the disc-shaped information recording medium, and an optical table that fixes the light source and the light receiving element. A method of manufacturing a disk recording / reproducing apparatus, comprising: fixing the light source and the light receiving element to the optical bench, and changing the objective lens driving device to the objective lens according to a signal amount detected by the light receiving element. After moving in a plane substantially orthogonal to the optical axis of the light beam incident on the optical table, the light beam is adhered to the optical bench, so that a desired detection signal is obtained by reflected light from the disc-shaped information recording medium. To obtain, and performs adjustment of a relative position of the light receiving element and the light source and the objective lens.

　また、本発明の第２の構成にかかるディスク記録再生装置の製造方法は、光源と、円盤状情報記録媒体からの反射光を受光する受光素子と、前記円盤状情報記録媒体へ光を集光する対物レンズと、前記対物レンズを保持し前記円盤状情報記録媒体のフォーカスおよびラジアル方向に前記対物レンズを駆動する対物レンズ駆動装置と、前記光源と前記対物レンズ駆動装置との間に位置するミラーと、前記光源、前記受光素子、および前記ミラーを固定する光学台とを備えた備えたディスク記録再生装置の製造方法であって、前記光学台に前記光源および前記受光素子を固定した状態で、前記受光素子で検出した信号量に応じて、前記ミラーを前記対物レンズに入射する光束の光軸と略直交する平面内で移動した後、前記光学台と接着することにより、前記円盤状情報記録媒体からの反射光により所望の検出信号を得るための、前記光源と前記対物レンズと前記受光素子と前記ミラーの相対位置調整を行うことを特徴とする。 Further, the method of manufacturing a disk recording / reproducing apparatus according to the second configuration of the present invention includes a light source, a light receiving element for receiving reflected light from the disc-shaped information recording medium, and condensing light on the disc-shaped information recording medium. An objective lens, an objective lens driving device for holding the objective lens, and driving the objective lens in the focus and radial directions of the disc-shaped information recording medium, and a mirror positioned between the light source and the objective lens driving device And a light source, the light receiving element, and a method of manufacturing a disk recording and reproducing apparatus including an optical table for fixing the mirror, wherein the light source and the light receiving element are fixed to the optical table, After moving the mirror in a plane substantially perpendicular to the optical axis of the light beam incident on the objective lens according to the signal amount detected by the light receiving element, bonding the mirror to the optical bench. More, and performs desired for obtaining a detection signal, the relative positional adjustment of the the light source and the objective lens and the light receiving element mirror by the reflected light from the disk-like information recording medium.

本発明によれば、フォーカス誤差信号およびトラッキング誤差信号調整時における半導体レーザと対物レンズと受光素子との相対位置調整および光軸調整を、対物レンズに入射する光軸と略直行する平面内での対物レンズの平面調整で実現することにより、集積ユニットの高さ方向の調整しろとこれを保持するホルダーが不用となルので、光学ヘッドおよびディスク記録再生装置の小型、薄型化を実現できる。   According to the present invention, the relative position adjustment and the optical axis adjustment between the semiconductor laser, the objective lens, and the light receiving element at the time of adjusting the focus error signal and the tracking error signal are performed in a plane substantially perpendicular to the optical axis incident on the objective lens. By realizing the planar adjustment of the objective lens, the height of the integrated unit in the height direction and the holder for holding the integrated unit become unnecessary, so that the optical head and the disk recording / reproducing apparatus can be reduced in size and thickness.

　上記の第１及び第２の構成によれば、円盤状情報記録媒体からの反射光により所望の検出信号を得るための、光源と対物レンズと受光素子の相対位置調整を、対物レンズ駆動装置及び必要によりミラーを移動することにより行われるので、従来のように集積ユニットを移動して位置調整する必要がなくなる。この結果、集積ユニットの調整しろを予め確保しておく必要がない。また、従来の装置では集積ユニットを位置調整する際に必要であった集積ユニットを保持するホルダーが不要となる。これらにより、光学ヘッドの全高を小さくすることができ、光学ヘッド及びディスク記録再生装置を小型化、薄型化することが可能になる。 According to the first and second configurations, the relative position adjustment between the light source, the objective lens, and the light receiving element for obtaining a desired detection signal by the reflected light from the disc-shaped information recording medium is performed by the objective lens driving device and Since the movement is performed by moving the mirror as necessary, it is not necessary to move the integrated unit and adjust the position as in the related art. As a result, there is no need to secure a margin for adjusting the integrated unit in advance. Further, in the conventional apparatus, a holder for holding the stacking unit, which is necessary when adjusting the position of the stacking unit, becomes unnecessary. As a result, the overall height of the optical head can be reduced, and the optical head and the disk recording / reproducing apparatus can be reduced in size and thickness.

　上記の第１及び第２の構成において、前記対物レンズ駆動装置の移動による相対位置調整が、前記対物レンズに入射する光軸と略直行する平面内での前記対物レンズ駆動装置の位置調整を含むことが好ましい。特に、前記対物レンズ駆動装置の位置調整を、前記円盤状情報記録媒体のラジアル方向および／またはタンジェンシャル方向に前記対物レンズ駆動装置を移動することにより行うことが好ましい。かかる好ましい構成によれば、円盤状情報記録媒体からの反射光により所望の検出信号を得るための、光源と対物レンズと受光素子の相対位置調整を容易に行うことができる。 In the first and second configurations, the relative position adjustment by moving the objective lens driving device includes adjusting the position of the objective lens driving device in a plane substantially perpendicular to an optical axis incident on the objective lens. Is preferred. In particular, it is preferable to adjust the position of the objective lens driving device by moving the objective lens driving device in a radial direction and / or a tangential direction of the disc-shaped information recording medium. According to such a preferred configuration, relative position adjustment between the light source, the objective lens, and the light receiving element for obtaining a desired detection signal by the reflected light from the disc-shaped information recording medium can be easily performed.

　上記の第１及び第２の構成において、前記対物レンズ駆動装置を移動することにより、さらに前記円盤状情報記録媒体と前記対物レンズとの相対角度を調整するための前記対物レンズ駆動装置のスキュー調整がされてなることが好ましい。かかる好ましい構成によれば、対物レンズ駆動装置を移動して光源と対物レンズと受光素子の相対位置調整を行う際に、円盤状情報記録媒体と対物レンズとの相対角度調整も同時に行うことができるので、円盤状情報記録媒体と対物レンズとの相対角度調整のために従来行っていた球面アオリによる調整が不要となる。この結果、構造が簡素化でき、装置をより一層小型化、薄型化することができる。また、対物レンズ駆動装置の平面調整及び回転調整を行うだけで、光源・受光素子と対物レンズ駆動装置と円盤状情報記録媒体との間の相対調整を一度に行うことができるので、調整工程が簡素化できる。 In the first and second configurations, a skew adjustment of the objective lens driving device for further adjusting a relative angle between the disc-shaped information recording medium and the objective lens by moving the objective lens driving device. It is preferable that it is done. According to such a preferred configuration, when the relative position adjustment between the light source, the objective lens, and the light receiving element is performed by moving the objective lens driving device, the relative angle adjustment between the disc-shaped information recording medium and the objective lens can be performed at the same time. This eliminates the need for the conventional spherical tilt adjustment for adjusting the relative angle between the disc-shaped information recording medium and the objective lens. As a result, the structure can be simplified, and the device can be further reduced in size and thickness. Further, the relative adjustment between the light source / light receiving element, the objective lens driving device, and the disc-shaped information recording medium can be performed at once only by performing the plane adjustment and the rotation adjustment of the objective lens driving device. Can be simplified.

　また、上記の第１及び第２の構成において、前記対物レンズ駆動装置を移動することにより、さらに前記対物レンズの入射光軸方向の前記対物レンズ駆動装置の位置調整がされてなることが好ましい。かかる好ましい構成によれば、フォーカス誤差信号のオフセットを除去することができるので、より高精度かつ低電力の記録及び再生を行うことができる光学ヘッド及びディスク記録再生装置を提供することができる。 In the first and second configurations, it is preferable that the position of the objective lens driving device in the direction of the incident optical axis of the objective lens is further adjusted by moving the objective lens driving device. According to such a preferred configuration, since the offset of the focus error signal can be removed, it is possible to provide an optical head and a disk recording / reproducing apparatus capable of performing recording and reproduction with higher precision and lower power.

　また、上記の第２の構成において、前記ミラーを移動することによる前記相対位置調整が、前記ミラーの反射光軸の角度調整を含むことが好ましい。かかる好ましい構成によれば、対物レンズ駆動装置のラジアル方向およびタンジェンシャル方向の調整量を大幅に低減することができるので、より一層装置を小型化、薄型化することができる。 In the second configuration, it is preferable that the relative position adjustment by moving the mirror includes an angle adjustment of a reflection optical axis of the mirror. According to this preferred configuration, the amount of adjustment of the objective lens driving device in the radial direction and the tangential direction can be greatly reduced, so that the device can be further reduced in size and thickness.

　さらに、上記の第１及び第２の構成において、前記対物レンズの略中心部を回転中心として、前記対物レンズに入射する光軸と略直交する平面内で前記対物レンズもしくは前記対物レンズ駆動装置の回転調整を行うことが好ましい。かかる好ましい構成によれば、光源が有する非点隔差および対物レンズが有する非点収差を対物レンズもしくは対物レンズ駆動装置の面内回転により低減することができるので、より一層光学ヘッドの記録再生能力が向上し、ディスク記録再生装置の高性能化が可能となる。 Further, in the first and second configurations described above, the objective lens or the objective lens driving device may be configured such that the substantially central portion of the objective lens is a center of rotation and a plane substantially orthogonal to an optical axis incident on the objective lens. It is preferable to perform rotation adjustment. According to such a preferred configuration, the astigmatism of the light source and the astigmatism of the objective lens can be reduced by the in-plane rotation of the objective lens or the objective lens driving device, so that the recording / reproducing ability of the optical head is further improved. It is possible to improve the performance of the disk recording / reproducing apparatus.

　以下、本発明を図面を用いて詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings.

　（実施の形態１）
　以下本発明の第１の実施の形態について、図面を参照しながら説明する。 (Embodiment 1)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

　図１、図２、図３、図４および図５において、１はシリコン基板、２はシリコン基板１上に固定された半導体レーザ、３はシリコン基板１上に形成された多分割光検出器、４は樹脂パッケージ、５は樹脂で成形されたホログラム素子（回折格子）、６はビームスプリッタ６ａ、折り返しミラー６ｂ、偏光分離素子６ｃより構成された複合素子、９は反射ミラー、１０は対物レンズホルダー１１に固定された対物レンズ、１２は磁気光学効果を有する光磁気記録媒体、１３は対物レンズを光磁気記録媒体１２のフォーカスおよびラジアル方向に駆動する対物レンズ駆動装置、１４は対物レンズ駆動装置１３の構成要素となるベース、１６は光学台、１７は多分割光検出機３上に形成されたフォーカス誤差信号検出用の光スポット、１８は多分割光検出機３上に形成されたトラッキング誤差信号検出用の光スポット、１９は多分割光検出器３上に形成されるメインビーム（Ｐ偏光）、２０は多分割光検出器３上に形成されるメインビーム（Ｓ偏光）、２１はフォーカスエラー受光領域、２２および２３はトラッキングエラー受光領域、２４は情報信号受光領域、２５は減算器、２６は加算器、２７および２８はフォーカス誤差信号検出用の光スポットの焦点、２９は位置決め穴、３１は接着剤、３２はガイド軸である。 1, 2, 3, 4 and 5, 1 is a silicon substrate, 2 is a semiconductor laser fixed on the silicon substrate 1, 3 is a multi-segmented photodetector formed on the silicon substrate 1, 4 is a resin package, 5 is a hologram element (diffraction grating) molded of resin, 6 is a composite element composed of a beam splitter 6a, a folding mirror 6b, and a polarization splitting element 6c, 9 is a reflection mirror, 10 is an objective lens holder. An objective lens fixed to 11, an magneto-optical recording medium 12 having a magneto-optical effect, an objective lens driving device 13 for driving the objective lens in the focus and radial directions of the magneto-optical recording medium 12, and an objective lens driving device 13 , 16 is an optical table, 17 is a light spot for detecting a focus error signal formed on the multi-segment photodetector 3, and 18 is probably A light spot for tracking error signal detection formed on the photodetector 3, 19 is a main beam (P-polarized light) formed on the multi-segment photodetector 3, and 20 is formed on the multi-segment photodetector 3. Main beam (S-polarized light), 21 is a focus error light receiving area, 22 and 23 are tracking error light receiving areas, 24 is an information signal light receiving area, 25 is a subtractor, 26 is an adder, and 27 and 28 are focus error signal detection. , A reference hole 29, an adhesive 31, and a guide shaft 32.

　以上のように構成された本発明の第１の実施の形態について、以下その動作を説明する。 The operation of the first embodiment of the present invention configured as described above will be described below.

　半導体レーザ２より発せられた光は、ホログラム素子５により異なる複数の光束に分離される。異なる複数の光束は複合素子６のビームスプリッタ６ａを透過し、反射ミラー９で反射され対物レンズホルダー１１に固定された対物レンズ１０により、光磁気記録媒体１２上に直径１ミクロン程度の光スポット３０として集光される。 (4) The light emitted from the semiconductor laser 2 is separated by the hologram element 5 into a plurality of different light beams. The plurality of different light beams pass through the beam splitter 6a of the composite element 6, are reflected by the reflection mirror 9, and are fixed on the objective lens holder 11 by the objective lens 10 to form a light spot 30 having a diameter of about 1 micron on the magneto-optical recording medium 12. As light.

　また複合素子６のビームスプリッタ６ａにより反射された光束はレーザモニタ用受光素子（図示せず）に入射し半導体レーザ２の駆動電流を制御する。 {Circle around (4)} The light beam reflected by the beam splitter 6a of the composite element 6 is incident on a laser monitoring light receiving element (not shown) to control the driving current of the semiconductor laser 2.

　光磁気記録媒体１２からの反射光は、逆の経路をたどり、複合素子６のビームスプリッタ６ａにより反射分離されて、折り返しミラー６ｂ、偏光分離素子６ｃに入射する。 (4) The reflected light from the magneto-optical recording medium 12 follows the reverse path, is reflected and separated by the beam splitter 6a of the composite device 6, and enters the return mirror 6b and the polarization separating device 6c.

　半導体レーザ２は、図４（Ａ）で紙面に平行な偏光方向となるよう設置されており、入射光は偏光分離素子６ｃにより、偏光方向を４５度回転させるとともに互いに直交する２つの偏光成分の光束に分離され、情報信号受光領域２４に入射する。 The semiconductor laser 2 is installed so as to have a polarization direction parallel to the paper surface in FIG. 4 (A), and the incident light is rotated by 45 degrees by the polarization separation element 6c and two polarization components orthogonal to each other. The light is separated into light beams and enters the information signal light receiving region 24.

また情報記録媒体１２からの反射光のうちビームスプリッタ６ａを透過した光束は回折格子５により複数の光束に分離されフォーカス誤差信号受光領域２１とトラッキング誤差信号受光領域２２および２３へ集光する。   Of the light reflected from the information recording medium 12, the light transmitted through the beam splitter 6a is split into a plurality of light by the diffraction grating 5 and condensed on the focus error signal light receiving area 21 and the tracking error signal light receiving areas 22 and 23.

　フォーカスサーボはいわゆるＳＳＤ法で行い、トラッキングサーボはいわゆるプッシュプル法で行う。 Focus servo is performed by the so-called SSD method, and tracking servo is performed by the so-called push-pull method.

　さらに、Ｐ偏光からなるメインビーム１９とＳ偏光からなるメインビーム２０の差を演算することにより、差動検出法による光磁気ディスク情報信号の検出が可能となる。さらに、それらの和をとることにより、プレピット信号の検出が可能となる。 Furthermore, by calculating the difference between the main beam 19 composed of P-polarized light and the main beam 20 composed of S-polarized light, it is possible to detect a magneto-optical disk information signal by a differential detection method. Further, by taking the sum of them, it is possible to detect a pre-pit signal.

反射ミラー９は光学台１６に固定される。また、集積ユニット７は光学台１６に嵌合固定される。この結果、多分割光検出器３のＺ’軸方向（光軸方向）の位置は、受光面が光スポットの焦点２７および２８の略中間に位置するように、光学台１６の寸法が規定される。   The reflection mirror 9 is fixed to the optical bench 16. The integrated unit 7 is fitted and fixed to the optical bench 16. As a result, the size of the optical bench 16 is defined such that the position of the multi-segmented photodetector 3 in the Z′-axis direction (optical axis direction) is located substantially in the middle of the focal points 27 and 28 of the light spot. You.

　本実施の形態において、光磁気記録媒体からの反射光により所望の検出信号を得るための半導体レーザ２と対物レンズ１０と多分割光検出器３の相対位置調整は以下のようにして行われる。 In the present embodiment, relative position adjustment between the semiconductor laser 2, the objective lens 10, and the multi-segment photodetector 3 for obtaining a desired detection signal by reflected light from the magneto-optical recording medium is performed as follows.

　外部治具のチャッキングピン（図示せず）によりベース１４の位置決め穴２９を保持し、対物レンズに入射する光軸と略直行する平面内で、対物レンズ駆動装置１３をＸ方向（ラジアル方向）およびＹ方向（タンジェンシャル方向）に移動して、トラッキング誤差信号受光領域２２および２３の出力が略均一となるように調整する。調整後、その状態のままベース１４を光学台１６に接着剤３１を用いて接着固定する。以上により、フォーカス誤差信号およびトラッキング誤差信号の調整が完了する。 The positioning hole 29 of the base 14 is held by a chucking pin (not shown) of the external jig, and the objective lens driving device 13 is moved in the X direction (radial direction) and in the plane substantially perpendicular to the optical axis incident on the objective lens. By moving in the Y direction (tangential direction), the output of the tracking error signal light receiving regions 22 and 23 is adjusted so as to be substantially uniform. After the adjustment, the base 14 is bonded and fixed to the optical bench 16 using the adhesive 31 in this state. Thus, the adjustment of the focus error signal and the tracking error signal is completed.

この時、ベース１４を光学台１６に予め接着固定しておいて、対物レンズ駆動装置１３をベース１４に対してＸ方向およびＹ方向に調整後、ベース１４に固定しても同様の効果が得られることは言うまでもない。   At this time, the same effect can be obtained by fixing the base 14 to the optical base 16 in advance and fixing the objective lens driving device 13 to the base 14 after adjusting the objective lens driving device 13 in the X direction and the Y direction. Needless to say,

　以上の、対物レンズ駆動装置を対物レンズに入射する光軸と略直行する平面内での調整する際に、同時に光磁気記録媒体１２と対物レンズとの相対角度を調整するために、対物レンズ駆動装置１３のスキュー調整を行うことができる。即ち、上記と同一治具を用いて、外部治具を回転させることにより、対物レンズ駆動装置１３を、ラジアル方向θＲ及びタンジェンシャル方向θＴにそれぞれ回転調整する。 In adjusting the relative angle between the magneto-optical recording medium 12 and the objective lens at the same time as adjusting the objective lens driving device in a plane substantially perpendicular to the optical axis incident on the objective lens, The skew adjustment of the device 13 can be performed. That is, by rotating the external jig using the same jig as described above, the rotation of the objective lens driving device 13 is adjusted in the radial direction θR and the tangential direction θT.

　以上のように第１の実施の形態によれば、集積ユニット７を光学台１６に直接固定することによりホルダーを廃止して、対物レンズ駆動装置１３をラジアル方向（Ｘ方向）およびタンジェンシャル方向（Ｙ方向）に移動調整することにより、フォーカス誤差信号およびトラッキング誤差信号の調整を行うこととした。この結果、光学ヘッドの高さ方向の調整しろが不用となり、またホルダーの肉圧分だけ厚みを薄くすることができる。従って、光学ヘッド全高を大幅に低減することが可能となり、小型・薄型の光学ヘッドおよびディスク記録再生装置を実現することができる。 As described above, according to the first embodiment, the holder is abolished by directly fixing the integrated unit 7 to the optical table 16, and the objective lens driving device 13 is moved in the radial direction (X direction) and the tangential direction ( By adjusting the movement in the Y direction), the focus error signal and the tracking error signal are adjusted. As a result, there is no need to adjust the height of the optical head in the height direction, and the thickness can be reduced by the thickness of the holder. Therefore, the total height of the optical head can be significantly reduced, and a small and thin optical head and a disk recording / reproducing apparatus can be realized.

　更に、光磁気記録媒体１２と対物レンズとの相対角度を調整するための対物レンズ駆動装置１３のスキュー調整を併せて行うことにより、従来の球面アオリによる調整が不要となり、構造が簡素化でき、装置をより一層小型化、薄型化することができる。また、対物レンズ駆動装置の平面調整及び回転調整を同時に行うことで、光源・受光素子と対物レンズ駆動装置と円盤状情報記録媒体との間の相対調整が完了するので、調整工程が簡素化できる。 Further, by performing skew adjustment of the objective lens driving device 13 for adjusting the relative angle between the magneto-optical recording medium 12 and the objective lens, the conventional adjustment by spherical tilt is unnecessary, and the structure can be simplified. The device can be further reduced in size and thickness. In addition, by performing the plane adjustment and the rotation adjustment of the objective lens driving device at the same time, the relative adjustment between the light source / light receiving element, the objective lens driving device, and the disc-shaped information recording medium is completed, so that the adjustment process can be simplified. .

　（実施の形態２）
　つぎに第２の実施の形態について、図６を参照しながら説明する。 (Embodiment 2)
Next, a second embodiment will be described with reference to FIG.

　本実施の形態が第１の実施の形態と相違する点は、ベース１４のＹ方向（タンジェンシャル方向）の調整を、反射ミラー９のＺ’方向の調整により実現することである。 This embodiment is different from the first embodiment in that the adjustment of the base 14 in the Y direction (tangential direction) is realized by adjusting the reflection mirror 9 in the Z ′ direction.

この構成により、対物レンズ駆動装置１３およびベース１４のＹ方向（タンジェンシャル方向）への調整量を大幅に低減することが可能となり、より一層光学ヘッドの小型化が可能となる。   With this configuration, the amount of adjustment of the objective lens driving device 13 and the base 14 in the Y direction (tangential direction) can be greatly reduced, and the size of the optical head can be further reduced.

　（実施の形態３）
　つぎに第３の実施の形態について、図７を参照しながら説明する。 (Embodiment 3)
Next, a third embodiment will be described with reference to FIG.

　本実施の形態が第１の実施の形態と相違する点は、ベース１４の調整を、Ｚ方向（入射光軸方向、高さ方向）にも実施するような構成とすることである。この構成により、フォーカス誤差信号のオフセットを除去することが可能となりより高精度かつ低電力な記録および再生を行うことが可能となる。 The present embodiment is different from the first embodiment in that the base 14 is adjusted also in the Z direction (incident optical axis direction, height direction). With this configuration, it is possible to remove the offset of the focus error signal, and it is possible to perform recording and reproduction with higher precision and lower power.

　（実施の形態４）
　つぎに第４の実施の形態について、図８を参照しながら説明する。 (Embodiment 4)
Next, a fourth embodiment will be described with reference to FIG.

　本実施の形態が第１の実施の形態と相違する点は、ベース１４のＸ方向（ラジアル方向）およびＹ方向（タンジェンシャル方向）の調整を、反射ミラー９の反射面角度調整θＸ、θＹにより実現することである。このとき反射面角度調整の回転中心は半導体レーザ２の略発光点とする。 This embodiment is different from the first embodiment in that the adjustment of the base 14 in the X direction (radial direction) and the Y direction (tangential direction) is performed by adjusting the reflection surface angles θX and θY of the reflection mirror 9. It is to realize. At this time, the rotation center of the reflection surface angle adjustment is set to a substantially light emitting point of the semiconductor laser 2.

この構成により、対物レンズ駆動装置１３のラジアル方向およびタンジェンシャル方向への調整量を大幅に低減することが可能となり、より一層光学ヘッドの小型化が可能となる。   With this configuration, the amount of adjustment of the objective lens driving device 13 in the radial and tangential directions can be significantly reduced, and the size of the optical head can be further reduced.

　（実施の形態５）
　つぎに第５の実施の形態について、図９を参照しながら説明する。 (Embodiment 5)
Next, a fifth embodiment will be described with reference to FIG.

　本実施の形態が第１の実施例と相違する点は、対物レンズ１０または対物レンズ駆動装置１３またはベース１４を、対物レンズ１０の略中心部を回転中心として、対物レンズに入射する光軸と略直交する面内で回転調整を行う点である。 This embodiment is different from the first embodiment in that the objective lens 10 or the objective lens driving device 13 or the base 14 is connected to the optical axis incident on the objective lens about the center of the objective lens 10 as the center of rotation. The point is that the rotation is adjusted in a plane that is substantially orthogonal.

この構成により、半導体レーザ２が有する非点隔差および対物レンズ１０が有する非点収差を対物レンズ１０の面内回転により低減することが可能となり、より一層光学ヘッドの記録再生能力が向上しディスク記録再生装置の高性能化が可能となる。   With this configuration, the astigmatism of the semiconductor laser 2 and the astigmatism of the objective lens 10 can be reduced by the in-plane rotation of the objective lens 10, so that the recording / reproducing ability of the optical head is further improved, and the disk recording is improved. The performance of the playback device can be improved.

本発明の第１の実施の形態に係るディスク記録再生装置の対物レンズ駆動装置の調整方法を示した分解斜視図である。FIG. 2 is an exploded perspective view showing a method of adjusting the objective lens driving device of the disk recording / reproducing device according to the first embodiment of the present invention. 本発明の第１の実施の形態に係るディスク記録再生装置の組立状態の全体構成の概略を示した斜視図である。FIG. 1 is a perspective view schematically showing an overall configuration of an assembled state of a disk recording / reproducing apparatus according to a first embodiment of the present invention. 本発明の第１の実施の形態に係るディスク記録再生装置の構成の概略を示した分解斜視図である。FIG. 1 is an exploded perspective view schematically showing a configuration of a disk recording / reproducing apparatus according to a first embodiment of the present invention. 本発明の第１の実施の形態に係るディスク記録再生装置の光路を示した概略図であり、（Ａ）は正面図、（Ｂ）は（Ａ）のＩ−Ｉ線での矢印方向から見た断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an optical path of a disk recording / reproducing apparatus according to a first embodiment of the present invention, where (A) is a front view, and (B) is a view seen from the direction of an arrow along line II in (A). FIG. 本発明の第１の実施の形態に係るディスク記録再生装置に使用される多分割光検出器と信号検出回路を示す概略図である。FIG. 2 is a schematic diagram showing a multi-segment photodetector and a signal detection circuit used in the disk recording / reproducing apparatus according to the first embodiment of the present invention. 本発明の第２の実施の形態に係るディスク記録再生装置の対物レンズ駆動装置及び反射ミラーの調整方法を示した分解斜視図である。FIG. 9 is an exploded perspective view illustrating an adjustment method of an objective lens driving device and a reflection mirror of a disk recording / reproducing device according to a second embodiment of the present invention. 本発明の第３の実施の形態に係るディスク記録再生装置の対物レンズ駆動装置の調整方法を示した分解斜視図である。FIG. 14 is an exploded perspective view showing a method of adjusting an objective lens driving device of a disk recording / reproducing device according to a third embodiment of the present invention. 本発明の第４の実施の形態に係るディスク記録再生装置の反射ミラーの回転調整の方法を示した概略図であり、（Ａ）は正面図、（Ｂ）は（Ａ）のII−II線での矢印方向から見た断面図である。It is the schematic which showed the method of rotation adjustment of the reflection mirror of the disk recording / reproducing apparatus which concerns on the 4th Embodiment of this invention, (A) is a front view, (B) is the II-II line of (A). FIG. 4 is a cross-sectional view as viewed from the direction of the arrow. 本発明の第５の実施の形態に係るディスク記録再生装置の対物レンズの回転調整の方法を示した分解斜視図である。FIG. 21 is an exploded perspective view showing a method for adjusting the rotation of an objective lens of a disk recording / reproducing apparatus according to a fifth embodiment of the present invention. 従来のディスク記録再生装置の構成の概略と調整方法を示した分解斜視図である。FIG. 10 is an exploded perspective view showing the outline of the configuration of a conventional disk recording / reproducing apparatus and an adjusting method. 従来のディスク記録再生装置の光路を示した概略図であり、（Ａ）は正面図、（Ｂ）は（Ａ）のIII−III線での矢印方向から見た断面図である。It is the schematic which showed the optical path of the conventional disk recording / reproducing apparatus, (A) is a front view, (B) is sectional drawing seen from the arrow direction of III-III line of (A). 従来のディスク記録再生装置に使用される多分割光検出器と信号検出回路を示す概略図である。FIG. 2 is a schematic diagram showing a multi-segment photodetector and a signal detection circuit used in a conventional disk recording / reproducing apparatus. 従来のディスク記録再生装置のスキュー調整の機構を示した概略断面図である。FIG. 11 is a schematic sectional view showing a skew adjustment mechanism of a conventional disk recording / reproducing apparatus.

符号の説明Explanation of reference numerals

１　シリコン基板
２　半導体レーザ
３　多分割光検出器
４　樹脂パッケージ
５　ホログラム素子
６　 複合素子
６ａ　ビームスプリッタ
６ｂ　折り返しミラー
６ｃ　偏光分離素子
７　集積ユニット
８　ホルダ
９　反射ミラー
１０　対物レンズ
１１　対物レンズホルダー
１２　光磁気記録媒体
１３　対物レンズ駆動装置
１４　ベース
１５　アオリネジ
１６　光学台
１７　光スポット
１８　光スポット
１９　メインビーム（Ｐ偏光）
２０　メインビーム（Ｓ偏光）
２１　フォーカス誤差信号受光領域
２２ トラッキング誤差信号受光領域
２３　トラッキング誤差信号受光領域
２４　情報信号受光領域
２５　減算器
２６　加算器
２７　光スポットの焦点
２８　光スポットの焦点
２９　位置決め穴
３０　光スポット
３１　接着剤
３２　ガイド軸 REFERENCE SIGNS LIST 1 silicon substrate 2 semiconductor laser 3 multi-split photodetector 4 resin package 5 hologram element 6 composite element 6a beam splitter 6b folding mirror 6c polarization splitting element 7 integrated unit 8 holder 9 reflection mirror 10 objective lens 11 objective lens holder 12 magneto-optical recording Medium 13 Objective lens drive 14 Base 15 Tilt screw 16 Optical table 17 Light spot 18 Light spot 19 Main beam (P polarization)
20 Main beam (S polarization)
Reference Signs List 21 focus error signal light receiving area 22 tracking error signal light receiving area 23 tracking error signal light receiving area 24 information signal light receiving area 25 subtractor 26 adder 27 light spot focus 28 light spot focus 29 positioning hole 30 light spot 31 adhesive 32 guide axis

Claims (10)

　光源と、
　円盤状情報記録媒体からの反射光を受光する受光素子と、
　前記円盤状情報記録媒体へ光を集光する対物レンズと、
　前記対物レンズを保持し前記円盤状情報記録媒体のフォーカスおよびラジアル方向に前記対物レンズを駆動する対物レンズ駆動装置と、
　前記光源および前記受光素子を固定する光学台と
　を備えた備えたディスク記録再生装置の製造方法であって、
　前記光学台に前記光源および前記受光素子を固定した状態で、前記受光素子で検出した信号量に応じて、前記対物レンズ駆動装置を前記対物レンズに入射する光束の光軸と略直交する平面内で移動した後、前記光学台と接着することにより、前記円盤状情報記録媒体からの反射光により所望の検出信号を得るための、前記光源と前記対物レンズと前記受光素子の相対位置調整を行うことを特徴とするディスク記録再生装置の製造方法。 A light source,
A light-receiving element for receiving reflected light from the disc-shaped information recording medium;
An objective lens for condensing light on the disc-shaped information recording medium,
An objective lens driving device that holds the objective lens and drives the objective lens in the focus and radial directions of the disc-shaped information recording medium;
An optical table for fixing the light source and the light receiving element.
In a state where the light source and the light receiving element are fixed to the optical bench, the objective lens driving device is driven in a plane substantially orthogonal to an optical axis of a light beam incident on the objective lens according to a signal amount detected by the light receiving element. Then, by adhering to the optical bench, relative position adjustment of the light source, the objective lens, and the light receiving element is performed to obtain a desired detection signal by reflected light from the disc-shaped information recording medium. A method for manufacturing a disk recording and reproducing apparatus. 　光源と、
　円盤状情報記録媒体からの反射光を受光する受光素子と、
　前記円盤状情報記録媒体へ光を集光する対物レンズと、
　前記対物レンズを保持し前記円盤状情報記録媒体のフォーカスおよびラジアル方向に前記対物レンズを駆動する対物レンズ駆動装置と、
　前記光源と前記対物レンズ駆動装置との間に位置するミラーと、
　前記光源、前記受光素子、および前記ミラーを固定する光学台と
　を備えた備えたディスク記録再生装置の製造方法であって、
　前記光学台に前記光源および前記受光素子を固定した状態で、前記受光素子で検出した信号量に応じて、前記ミラーを前記対物レンズに入射する光束の光軸と略直交する平面内で移動した後、前記光学台と接着することにより、前記円盤状情報記録媒体からの反射光により所望の検出信号を得るための、前記光源と前記対物レンズと前記受光素子と前記ミラーの相対位置調整を行うことを特徴とするディスク記録再生装置の製造方法。 A light source,
A light-receiving element for receiving reflected light from the disc-shaped information recording medium;
An objective lens for condensing light on the disc-shaped information recording medium,
An objective lens driving device that holds the objective lens and drives the objective lens in the focus and radial directions of the disc-shaped information recording medium;
A mirror located between the light source and the objective lens driving device;
A method for manufacturing a disk recording / reproducing apparatus comprising: the light source, the light receiving element, and an optical table for fixing the mirror.
With the light source and the light receiving element fixed to the optical bench, the mirror was moved in a plane substantially orthogonal to the optical axis of the light beam incident on the objective lens according to the signal amount detected by the light receiving element. Thereafter, by adhering to the optical table, the relative positions of the light source, the objective lens, the light receiving element, and the mirror are adjusted to obtain a desired detection signal by reflected light from the disc-shaped information recording medium. A method for manufacturing a disk recording and reproducing apparatus. 　光源と、
　円盤状情報記録媒体からの反射光を受光する受光素子と、
　前記円盤状情報記録媒体へ光を集光する対物レンズと、
　前記対物レンズを保持し前記円盤状情報記録媒体のフォーカスおよびラジアル方向に前記対物レンズを駆動する対物レンズ駆動装置と、
　前記光源と前記対物レンズ駆動装置との間に位置するミラーと、
　前記光源、前記受光素子、および前記ミラーを固定する光学台と
　を備えた備えたディスク記録再生装置の製造方法であって、
　前記光学台に前記光源および前記受光素子を固定した状態で、前記受光素子で検出した信号量に応じて、前記ミラーをラジアル方向およびタンジェンシャル方向にそれぞれスキュー調整および／または光軸方向へ平行移動した後、前記光学台と接着することにより、前記円盤状情報記録媒体からの反射光により所望の検出信号を得るための、前記光源と前記対物レンズと前記受光素子と前記ミラーの相対位置調整を行うことを特徴とするディスク記録再生装置の製造方法。 A light source,
A light-receiving element for receiving reflected light from the disc-shaped information recording medium;
An objective lens for condensing light on the disc-shaped information recording medium,
An objective lens driving device that holds the objective lens and drives the objective lens in the focus and radial directions of the disc-shaped information recording medium;
A mirror located between the light source and the objective lens driving device;
A method for manufacturing a disk recording / reproducing apparatus comprising: the light source, the light receiving element, and an optical table for fixing the mirror.
With the light source and the light receiving element fixed to the optical bench, the mirror is skew-adjusted in the radial direction and the tangential direction and / or translated in the optical axis direction according to the signal amount detected by the light receiving element. After that, by adhering to the optical table, relative position adjustment of the light source, the objective lens, the light receiving element, and the mirror to obtain a desired detection signal by reflected light from the disc-shaped information recording medium is performed. A method for manufacturing a disk recording / reproducing apparatus. 　前記受光素子の２つのトラッキング誤差信号受光領域で検出された検出信号が略均一となるように、前記相対位置調整を行うことを特徴とする請求項１〜３のいずれかに記載のディスク記録再生装置の製造方法。 The disk recording / reproducing apparatus according to any one of claims 1 to 3, wherein the relative position adjustment is performed so that detection signals detected in two tracking error signal light receiving areas of the light receiving element become substantially uniform. Device manufacturing method. 　前記光源と前記受光素子とが一体化され集積ユニットを構成することを特徴とする請求項１〜３のいずれかに記載のディスク記録再生装置の製造方法。 4. The method according to claim 1, wherein the light source and the light receiving element are integrated to form an integrated unit. 　前記円盤状情報記録媒体のラジアル方向および／またはタンジェンシャル方向に前記対物レンズ駆動装置を移動することを特徴とする請求項１に記載のディスク記録再生装置の製造方法。 2. The method according to claim 1, wherein the objective lens driving device is moved in a radial direction and / or a tangential direction of the disc-shaped information recording medium. 　更に、前記円盤状情報記録媒体と前記対物レンズとの相対角度を調整するための前記対物レンズ駆動装置のスキュー調整を行った後、前記対物レンズ駆動装置を前記光学台と接着することを特徴とする請求項１〜３のいずれかに記載のディスク記録再生装置の製造方法。 Further, after performing a skew adjustment of the objective lens driving device for adjusting a relative angle between the disc-shaped information recording medium and the objective lens, the objective lens driving device is bonded to the optical bench. The method for manufacturing a disk recording / reproducing apparatus according to claim 1. 　更に、前記対物レンズの入射光軸方向の前記対物レンズ駆動装置の位置調整を行った後、前記対物レンズ駆動装置を前記光学台と接着することを特徴とする請求項１〜３のいずれかに記載のディスク記録再生装置の製造方法。 Further, after adjusting the position of the objective lens driving device in the direction of the incident optical axis of the objective lens, the objective lens driving device is bonded to the optical bench. The manufacturing method of the disk recording / reproducing apparatus according to the above. 　前記対物レンズの略中心部を回転中心として、前記対物レンズに入射する光束の光軸と略直交する平面内で前記対物レンズまたは前記対物レンズ駆動装置の回転調整を行うことを特徴とする請求項１〜３のいずれかに記載のディスク記録再生装置の製造方法。 The rotation adjustment of the objective lens or the objective lens driving device is performed on a plane substantially orthogonal to an optical axis of a light beam incident on the objective lens, with a substantially central portion of the objective lens as a center of rotation. 4. The method for manufacturing a disk recording / reproducing device according to any one of 1 to 3. 　前記検出信号がトラッキングエラー信号またはフォーカスエラー信号であることを特徴とする請求項１〜３のいずれかに記載のディスク記録再生装置の製造方法。 4. The method according to claim 1, wherein the detection signal is a tracking error signal or a focus error signal.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007323756A (en) * 2006-06-02 2007-12-13 Hitachi Media Electoronics Co Ltd Optical head and disk drive unit using the same
JPWO2005093730A1 (en) * 2004-03-25 2008-07-31 パイオニア株式会社 Optical pickup, method for manufacturing the same, and holding device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2005093730A1 (en) * 2004-03-25 2008-07-31 パイオニア株式会社 Optical pickup, method for manufacturing the same, and holding device
JP2007323756A (en) * 2006-06-02 2007-12-13 Hitachi Media Electoronics Co Ltd Optical head and disk drive unit using the same
JP4521376B2 (en) * 2006-06-02 2010-08-11 株式会社日立メディアエレクトロニクス Optical head and disk drive using the same
US7830755B2 (en) 2006-06-02 2010-11-09 Hitachi Media Electronics Co., Ltd. Optical head and optical disc drive

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