JPH05249307A - Optical path controller and information recording and reproducing device using the same - Google Patents
Optical path controller and information recording and reproducing device using the sameInfo
- Publication number
- JPH05249307A JPH05249307A JP4046915A JP4691592A JPH05249307A JP H05249307 A JPH05249307 A JP H05249307A JP 4046915 A JP4046915 A JP 4046915A JP 4691592 A JP4691592 A JP 4691592A JP H05249307 A JPH05249307 A JP H05249307A
- Authority
- JP
- Japan
- Prior art keywords
- optical path
- focus
- curved mirror
- mirror
- control device
- 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.)
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- Optical Head (AREA)
- Optical Elements Other Than Lenses (AREA)
- Automatic Focus Adjustment (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば光学式情報記録
再生装置において記録媒体上に光ビームを案内するため
の光路制御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical path control device for guiding a light beam onto a recording medium in an optical information recording / reproducing device, for example.
【０００２】[0002]
【従来の技術】光ディスク等の光学式情報記録媒体に光
ビームを照射し、情報の記録・再生を行なう光学式情報
記録再生装置においては、前記光ビームを収束し焦点を
形成させる焦点形成手段と記録媒体上で焦点が形成され
るように焦点を移動させる焦点移動手段が必要となる。2. Description of the Related Art In an optical information recording / reproducing apparatus for irradiating an optical information recording medium such as an optical disk with a light beam to record / reproduce information, a focus forming means for converging the light beam to form a focal point is provided. A focus moving means for moving the focus so that the focus is formed on the recording medium is required.
【０００３】従来、図６に示すように、光学式情報記録
再生装置において、記録媒体２１に平行に入射された光
ビーム２２は立ち上げミラー２３によって記録媒体２１
に対して垂直となり、焦点形成手段となる対物レンズ２
４によって集光されて記録媒体２１上に焦点２５を形成
する。また、対物レンズ２４は焦点移動手段である対物
レンズ駆動装置２６によって焦点方向、即ち、記録媒体
２１に向かう方向に動かされるようになっている。この
対物レンズ駆動装置２６により記録媒体２１のぶれ等に
よって焦点２５が前記記録媒体２１上からはずれないよ
うに随時調整されている。Conventionally, as shown in FIG. 6, in an optical information recording / reproducing apparatus, a light beam 22 incident parallel to a recording medium 21 is recorded by a rising mirror 23 on the recording medium 21.
The objective lens 2 which is perpendicular to and serves as a focus forming means
A focal point 25 is formed on the recording medium 21 by being condensed by the recording medium 4. Further, the objective lens 24 is moved in the focus direction, that is, in the direction toward the recording medium 21 by an objective lens driving device 26 which is a focus moving means. The objective lens driving device 26 adjusts the focus 25 so that the focal point 25 does not deviate from the recording medium 21 due to the shake of the recording medium 21 or the like.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の記録再生装
置では、光ビーム２２を記録媒体２１と平行に入射させ
て収納性を良くし装置の小型化を図っているが、立ち上
げミラー２３によって記録媒体２１に対し垂直となった
光ビーム２２を記録媒体２１上に収束させる対物レンズ
２４と対物レンズ駆動装置２６とを、記録媒体２１と立
ち上げミラー２３との間に設ける必要があるため、これ
以上の薄型化は困難であるという問題点を有している。In the above-mentioned conventional recording / reproducing apparatus, the light beam 22 is made incident on the recording medium 21 in parallel to improve the storability and downsizing of the apparatus. Since it is necessary to provide the objective lens 24 and the objective lens driving device 26 for converging the light beam 22 perpendicular to the recording medium 21 on the recording medium 21, it is necessary to provide between the recording medium 21 and the rising mirror 23. There is a problem that it is difficult to reduce the thickness further.
【０００５】本発明は、記録再生装置の薄型化と簡素化
が可能な、焦点形成手段と焦点移動手段を兼ねる光路制
御装置を提供することを目的としている。SUMMARY OF THE INVENTION It is an object of the present invention to provide an optical path control device that serves both as a focus forming means and a focus moving means, which can make a recording / reproducing apparatus thin and simple.
【０００６】[0006]
【課題を解決するための手段】本発明に係る光路制御装
置は、上記の課題を解決するために、平行な光ビームを
反射し所定の位置に収束する装置であって、上記光ビー
ムを反射するとともに焦点を形成するように収束させる
曲面鏡と、上記焦点の位置が移動するように上記曲面鏡
を変形させる変形手段とを備えたことを特徴としてい
る。In order to solve the above problems, an optical path control device according to the present invention is a device for reflecting a parallel light beam and converging it to a predetermined position. In addition, a curved mirror that converges to form a focal point and a deforming unit that deforms the curved mirror to move the position of the focal point are provided.
【０００７】上記変形手段は、上記曲面鏡の反射面とは
反対側の面に設けられたバイモルフ型圧電素子でもよ
い。The deforming means may be a bimorph type piezoelectric element provided on the surface of the curved mirror opposite to the reflecting surface.
【０００８】また、上記変形手段は、上記曲面鏡の反射
面とは反対の側に設けられ曲面鏡を押圧することで変形
させる押圧手段、例えば積層型圧電素子でもよい。Further, the deforming means may be a pressing means provided on the side opposite to the reflecting surface of the curved mirror to deform the curved mirror by pressing, for example, a laminated piezoelectric element.
【０００９】更に上記光路制御装置は、上記曲面鏡の反
射面とは反対の側に流体が封入された層が設けられると
ともに、上記変形手段が上記流体を介して曲面鏡を押圧
することで変形させる押圧手段でもよい。Further, in the optical path control device, a layer in which a fluid is enclosed is provided on the side of the curved mirror opposite to the reflecting surface, and the deforming means deforms by pressing the curved mirror via the fluid. It may be a pressing means for making it.
【００１０】又、上記光路制御装置は、上記曲面鏡の反
射面とは反対の側に磁性流体が封入された層が設けられ
るとともに、上記変形手段が上記磁性流体を介して曲面
鏡を変形させる電磁石であってもよい。In the optical path control device, a layer in which a magnetic fluid is enclosed is provided on the side of the curved mirror opposite to the reflecting surface, and the deforming means deforms the curved mirror via the magnetic fluid. It may be an electromagnet.
【００１１】本発明に係る情報記録再生装置は、上記光
路制御装置を用いたことを特徴としている。An information recording / reproducing apparatus according to the present invention is characterized by using the above optical path control device.
【００１２】[0012]
【作用】上記の構成により、互いに平行な光ビームは曲
面鏡において反射され、反射光は収束されて光ビームの
反射前の方向に対して垂直な方向に焦点を形成する。With the above construction, the parallel light beams are reflected by the curved mirror, and the reflected lights are converged to form a focal point in the direction perpendicular to the direction before the reflection of the light beam.
【００１３】また、変形手段により上記曲面鏡が変形さ
れることにより、形成された焦点の位置を移動すること
ができる。Further, the position of the formed focal point can be moved by deforming the curved mirror by the deforming means.
【００１４】[0014]
【実施例】本発明の一実施例について図１および図２に
基づいて説明すれば、以下のとおりである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe one embodiment of the present invention with reference to FIGS.
【００１５】本実施例の光路制御装置は、図１に示すよ
うに、曲面鏡である放物面鏡４と、この放物面鏡４の背
後、即ち反射面とは反対側に接着されている変形手段で
あるバイモルフ型圧電素子５とが支持部材６で支えられ
た構成を有している。As shown in FIG. 1, the optical path control device of the present embodiment has a parabolic mirror 4 which is a curved mirror, and a rear surface of the parabolic mirror 4, that is, a side opposite to the reflecting surface. The bimorph type piezoelectric element 5 which is the deforming means is supported by the supporting member 6.
【００１６】上記放物面鏡４において平行光である光ビ
ーム２が反射されると、光ビーム２は収束され焦点３を
形成する。また、電圧をかけることによりバイモルフ型
圧電素子５は変形しその曲率が変化する。これに従い放
物面鏡４は変形し、変形した放物面鏡４′において反射
される光ビーム２は焦点３′を形成する。When the light beam 2 that is parallel light is reflected by the parabolic mirror 4, the light beam 2 is converged to form a focal point 3. Further, when a voltage is applied, the bimorph type piezoelectric element 5 is deformed and its curvature is changed. Accordingly, the parabolic mirror 4 is deformed, and the light beam 2 reflected by the deformed parabolic mirror 4'forms a focal point 3 '.
【００１７】上記構成の光路制御装置を光学式情報記録
再生装置に用いると、図２に示すように、光ビーム２は
放物面鏡４において反射し収束され、記録媒体１上に焦
点３を形成するようになる。また、バイモルフ型圧電素
子５に電圧をかけることによって放物面鏡４を変形させ
て焦点３の位置を移動させ、記録媒体１のぶれ等によっ
て焦点３が記録媒体１上から外れないように随時調整さ
れるようになる。When the optical path control device having the above-mentioned structure is used in an optical information recording / reproducing device, as shown in FIG. 2, the light beam 2 is reflected and converged by a parabolic mirror 4 and a focus 3 is formed on the recording medium 1. Comes to form. Further, by applying a voltage to the bimorph type piezoelectric element 5, the parabolic mirror 4 is deformed to move the position of the focal point 3 so that the focal point 3 does not deviate from the recording medium 1 due to the shake of the recording medium 1 or the like. Will be adjusted.
【００１８】これにより、従来用いられていた立ち上げ
ミラー、対物レンズ及び対物レンズ駆動装置が不必要と
なり、記録再生装置の小型化が図れる。As a result, the raising mirror, the objective lens and the objective lens driving device which have been conventionally used are unnecessary, and the recording / reproducing device can be miniaturized.
【００１９】本発明の他の光路制御装置を、図３に示
す。Another optical path control device of the present invention is shown in FIG.
【００２０】この光路制御装置は、支持手段９・９に支
持された曲面鏡である放物面鏡７と、この放物面鏡７の
背後に設けられた変形手段である積層型圧電素子８とか
らなっている。平行光である光ビーム２は放物面鏡７に
おいて反射・収束され、焦点３が形成される。また、電
圧をかけることによって、積層型圧電素子８は放物面鏡
７を押圧する。その結果、積層型圧電素子８により変形
された放物面鏡７′で反射された光ビーム２は収束され
焦点３′を形成するので、焦点３の移動が可能となる。This optical path control device includes a parabolic mirror 7 which is a curved mirror supported by supporting means 9 and a laminated piezoelectric element 8 which is a deforming means provided behind the parabolic mirror 7. It consists of The light beam 2 which is parallel light is reflected and converged by the parabolic mirror 7 to form a focal point 3. Further, by applying a voltage, the laminated piezoelectric element 8 presses the parabolic mirror 7. As a result, the light beam 2 reflected by the parabolic mirror 7'deformed by the laminated piezoelectric element 8 is converged to form the focal point 3 ', so that the focal point 3 can be moved.
【００２１】本発明の更に他の光路制御装置を、図４に
示す。FIG. 4 shows still another optical path control device of the present invention.
【００２２】この光路制御装置は、支持部材１４・１４
に支持された曲面鏡である放物面鏡１０と、この放物面
鏡１０の背後に設けられた変形手段である積層型圧電素
子１３とからなっている。また、放物面鏡１０の反射面
の反対側には弾性板１１が設けられ、放物面鏡１０の凹
部と弾性板１１との間に形成された層に流体１２が封入
されている。This optical path control device includes support members 14 and 14
The parabolic mirror 10 is a curved mirror that is supported by the parabolic mirror 10, and the laminated piezoelectric element 13 that is a deforming means provided behind the parabolic mirror 10. An elastic plate 11 is provided on the side opposite to the reflecting surface of the parabolic mirror 10, and a fluid 12 is enclosed in a layer formed between the recess of the parabolic mirror 10 and the elastic plate 11.
【００２３】上記構成の放物面鏡１０において反射され
た光ビーム２は、焦点３を形成する。一方、電圧をかけ
ることによって積層型圧電素子１３は弾性板１１を押圧
し、その結果、流体１２に加えられた圧力により放物面
鏡１０の背面には均一な力が加わり放物面鏡１０は変形
する。変形した放物面鏡１０′において反射された光ビ
ーム２は収束され、変形前の放物面鏡１０により形成さ
れた焦点３より移動した位置に焦点３′を形成する。The light beam 2 reflected by the parabolic mirror 10 having the above structure forms a focal point 3. On the other hand, when a voltage is applied, the laminated piezoelectric element 13 presses the elastic plate 11, and as a result, a uniform force is applied to the back surface of the parabolic mirror 10 due to the pressure applied to the fluid 12. Transforms. The light beam 2 reflected by the deformed parabolic mirror 10 'is converged to form a focal point 3'at a position moved from the focal point 3 formed by the parabolic mirror 10 before deformation.
【００２４】尚、上記図３及び図４に示された実施例に
おいては、変形手段として押圧手段である積層型圧電素
子８・１３を用いたが、曲面鏡を押圧することができる
ものであればこれらに限られるものではない。In the embodiments shown in FIGS. 3 and 4, the laminated piezoelectric elements 8 and 13 as the pressing means are used as the deforming means, but any curved mirror can be pressed. However, it is not limited to these.
【００２５】本発明の更に他の実施例を、図５を参照し
ながら以下に説明する。Still another embodiment of the present invention will be described below with reference to FIG.
【００２６】本実施例の光路制御装置は、支持部材１９
・１９に支持された曲面鏡である放物面鏡１５を有して
いる。この放物面鏡１５の反射面の反対側には弾性板１
６が設けられており、放物面鏡１５の凹部と弾性板１６
との間に形成された層には磁性流体１７が封入されてい
る。また、上記放物面鏡１５の背後には、変形手段であ
る電磁石１８が設けられている。The optical path control device according to this embodiment includes a support member 19
-It has a parabolic mirror 15 which is a curved mirror supported by 19. An elastic plate 1 is provided on the opposite side of the reflecting surface of the parabolic mirror 15.
6 is provided, and the concave portion of the parabolic mirror 15 and the elastic plate 16 are provided.
The magnetic fluid 17 is enclosed in the layer formed between the magnetic field and the magnetic field. Further, behind the parabolic mirror 15, an electromagnet 18 which is a deforming means is provided.
【００２７】上記構成の放物面鏡１５において反射され
た光ビーム２は、焦点３を形成する。一方、電磁石１８
により磁場を発生させることにより、磁性流体１７が例
えば電磁石１８側へ引きつけられ、その結果放物面鏡１
５は変形する。従って、変形した放物面鏡１５′におい
て反射された光ビーム２は収束され、焦点３′を形成す
る。このように、電磁石１８により放物面鏡１５を変形
させ焦点の位置を制御することができる。The light beam 2 reflected by the parabolic mirror 15 having the above structure forms a focal point 3. On the other hand, the electromagnet 18
By generating a magnetic field by the magnetic fluid 17, the magnetic fluid 17 is attracted toward the electromagnet 18, for example, and as a result, the parabolic mirror 1
5 deforms. Therefore, the light beam 2 reflected at the deformed parabolic mirror 15 'is focused and forms a focal point 3'. In this way, the electromagnet 18 can deform the parabolic mirror 15 to control the position of the focal point.
【００２８】なお、上記の例においては変形手段として
の電磁石１８を放物面鏡１５の背後に設ける構成とした
が、これに限らず電磁石を磁性流体１７の内部や弾性板
１６の表面に設けてもよい。この場合は、外部に電磁石
１８を設ける必要がないので、より小型化が図れる。In the above example, the electromagnet 18 serving as the deforming means is provided behind the parabolic mirror 15, but the present invention is not limited to this, and the electromagnet is provided inside the magnetic fluid 17 or on the surface of the elastic plate 16. May be. In this case, since it is not necessary to provide the electromagnet 18 outside, the size can be further reduced.
【００２９】尚、上記実施例においては曲面鏡として放
物面鏡を用いた例を説明したが、これに限らず球面鏡あ
るいは楕円面鏡でもよく、その場合は曲面鏡の形態と支
持部材とに応じて曲面鏡の厚さ分布を設定すればよい。In the above embodiment, the parabolic mirror is used as the curved mirror, but the invention is not limited to this, and it may be a spherical mirror or an ellipsoidal mirror. In that case, the shape of the curved mirror and the supporting member are different. The thickness distribution of the curved mirror may be set accordingly.
【００３０】[0030]
【発明の効果】本発明に係る光路制御装置は、以上のよ
うに、光ビームを反射するとともに、焦点を形成するよ
うに収束させる曲面鏡と、上記焦点の位置が移動するよ
うに上記曲面鏡を変形させる変形手段とを備えた構成で
ある。As described above, the optical path control device according to the present invention reflects the light beam and converges it so as to form a focal point, and the curved mirror so that the position of the focal point moves. And a deforming means for deforming.
【００３１】それゆえ、曲面鏡により平行に入射された
光ビームの方向を変えるとともに焦点を形成することが
でき、変形手段により曲面鏡を変形させ形成された焦点
の位置を移動することができる。Therefore, it is possible to change the direction of the light beam incident in parallel by the curved mirror and form the focal point, and it is possible to deform the curved mirror by the deforming means and move the position of the focal point formed.
【００３２】従って、小型で簡素化した光学制御装置と
なるという効果を奏する。Therefore, there is an effect that it becomes a compact and simplified optical control device.
【００３３】また、上記光学制御装置を用いた情報記録
再生装置は、従来用いられていた立ち上げミラー、対物
レンズ及び対物レンズ駆動装置に代えて本発明の光学制
御装置を設けることにより、情報記録再生装置の小型化
および簡素化が図れるという効果を奏する。Further, the information recording / reproducing apparatus using the above-mentioned optical control device is provided with the optical control device of the present invention in place of the conventionally used raising mirror, objective lens and objective lens driving device, thereby recording information. This has the effect of reducing the size and simplification of the playback device.
【図１】本発明の光路制御装置の構成を示す説明図であ
る。FIG. 1 is an explanatory diagram showing a configuration of an optical path control device of the present invention.
【図２】図１の光路制御装置により記録媒体に光ビーム
が照射される状態を示す説明図である。FIG. 2 is an explanatory diagram showing a state in which a recording medium is irradiated with a light beam by the optical path control device of FIG.
【図３】本発明の他の光路制御装置の構成を示す説明図
である。FIG. 3 is an explanatory diagram showing a configuration of another optical path control device of the present invention.
【図４】本発明の他の光路制御装置の構成を示す説明図
である。FIG. 4 is an explanatory diagram showing a configuration of another optical path control device of the present invention.
【図５】本発明の他の光路制御装置の構成を示す説明図
である。FIG. 5 is an explanatory diagram showing a configuration of another optical path control device of the present invention.
【図６】従来の光路制御装置により記録媒体に光ビーム
が照射される状態を示す説明図である。FIG. 6 is an explanatory diagram showing a state in which a recording medium is irradiated with a light beam by a conventional optical path control device.
【符号の説明】 ２ 光ビーム ３ 焦点 ４ 放物面鏡（曲面鏡） ５ バイモルフ型圧電素子（変形手段）[Explanation of reference numerals] 2 light beam 3 focus 4 parabolic mirror (curved surface mirror) 5 bimorph piezoelectric element (deformation means)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ１１Ｂ 7/135 Ｚ 8947−5Ｄ (72)発明者 上山 徹男 大阪府大阪市阿倍野区長池町22番22号 シ ャープ株式会社内─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification number Reference number within the agency FI technical display location G11B 7/135 Z 8947-5D (72) Inventor Tetsuo Ueyama 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka No. Sharp Co., Ltd.
Claims (6)
束する光路制御装置において、 上記光ビームを反射するとともに、焦点を形成するよう
に収束させる曲面鏡と、上記焦点の位置が移動するよう
に上記曲面鏡を変形させる変形手段とを備えたことを特
徴とする光路制御装置。1. An optical path control device that reflects a parallel light beam and converges it at a predetermined position, and a curved mirror that reflects the light beam and converges it so as to form a focus, and the position of the focus moves. An optical path control device comprising: a deforming unit that deforms the curved mirror.
反対側の面に設けられたバイモルフ型圧電素子であるこ
とを特徴とする請求項１に記載の光路制御装置。2. The optical path control device according to claim 1, wherein the deforming means is a bimorph type piezoelectric element provided on the surface of the curved mirror opposite to the reflecting surface.
反対の側に設けられ曲面鏡を押圧することで変形させる
押圧手段であることを特徴とする請求項１に記載の光路
制御装置。3. The optical path control according to claim 1, wherein the deforming means is a pressing means which is provided on the side opposite to the reflecting surface of the curved mirror and deforms the curved mirror by pressing it. apparatus.
封入された層が設けられるとともに、上記変形手段が上
記流体を介して曲面鏡を押圧することで変形させる押圧
手段であることを特徴とする請求項１に記載の光路制御
装置。4. The pressing means is provided with a layer in which a fluid is enclosed on the side opposite to the reflecting surface of the curved mirror, and the deforming means deforms by pressing the curved mirror via the fluid. The optical path control device according to claim 1, wherein:
体が封入された層が設けられるとともに、上記変形手段
が上記磁性流体を介して曲面鏡を変形させる電磁石であ
ることを特徴とする請求項１に記載の光路制御装置。5. A layer in which a magnetic fluid is sealed is provided on the side of the curved mirror opposite to the reflecting surface, and the deforming means is an electromagnet that deforms the curved mirror via the magnetic fluid. The optical path control device according to claim 1.
報記録再生装置。6. An information recording / reproducing apparatus using the optical path control device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4046915A JPH05249307A (en) | 1992-03-04 | 1992-03-04 | Optical path controller and information recording and reproducing device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4046915A JPH05249307A (en) | 1992-03-04 | 1992-03-04 | Optical path controller and information recording and reproducing device using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05249307A true JPH05249307A (en) | 1993-09-28 |
Family
ID=12760644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4046915A Pending JPH05249307A (en) | 1992-03-04 | 1992-03-04 | Optical path controller and information recording and reproducing device using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05249307A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6154326A (en) * | 1998-03-19 | 2000-11-28 | Fuji Xerox Co., Ltd. | Optical head, disk apparatus, method for manufacturing optical head, and optical element |
| US6275453B1 (en) | 1997-11-06 | 2001-08-14 | Fuji Xerox Co., Ltd. | Optical head and optical disk apparatus |
| WO2002013193A1 (en) * | 2000-08-02 | 2002-02-14 | Matsushita Electric Industrial Co., Ltd. | Optical pickup device |
| US6504130B1 (en) | 1999-10-22 | 2003-01-07 | Sumitomo Electric Industries, Ltd. | Laser cutting method |
| US6687196B1 (en) | 1998-05-08 | 2004-02-03 | Fuji Xerox Co., Lt.D. | Method and apparatus for implementing high density recording on a recording medium and a method of manufacturing same |
| KR100469093B1 (en) * | 2002-10-30 | 2005-01-29 | 박홍태 | Off-axis reflector |
| WO2005045814A1 (en) * | 2003-11-06 | 2005-05-19 | Matsushita Electric Industrial Co., Ltd. | Deformable mirror, optical head and optical recording/reproducing device |
| JP2008048910A (en) * | 2006-08-24 | 2008-03-06 | Shimadzu Corp | X-ray grid |
| JP2016057529A (en) * | 2014-09-11 | 2016-04-21 | 株式会社デンソー | Three-dimensional shape creation device |
| CN108406097A (en) * | 2018-05-29 | 2018-08-17 | 深圳光韵达光电科技股份有限公司 | A kind of laser processing device and processing method being suitable for processing superhard material |
-
1992
- 1992-03-04 JP JP4046915A patent/JPH05249307A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6275453B1 (en) | 1997-11-06 | 2001-08-14 | Fuji Xerox Co., Ltd. | Optical head and optical disk apparatus |
| US6320708B1 (en) | 1998-03-19 | 2001-11-20 | Fuji Xerox Co., Ltd. | Optical head, disk apparatus, method for manufacturing optical head, and optical element |
| US6154326A (en) * | 1998-03-19 | 2000-11-28 | Fuji Xerox Co., Ltd. | Optical head, disk apparatus, method for manufacturing optical head, and optical element |
| US6687196B1 (en) | 1998-05-08 | 2004-02-03 | Fuji Xerox Co., Lt.D. | Method and apparatus for implementing high density recording on a recording medium and a method of manufacturing same |
| US6504130B1 (en) | 1999-10-22 | 2003-01-07 | Sumitomo Electric Industries, Ltd. | Laser cutting method |
| US6836459B2 (en) | 2000-08-02 | 2004-12-28 | Matsushita Electric Industrial Co., Ltd. | Optical pickup device |
| WO2002013193A1 (en) * | 2000-08-02 | 2002-02-14 | Matsushita Electric Industrial Co., Ltd. | Optical pickup device |
| KR100469093B1 (en) * | 2002-10-30 | 2005-01-29 | 박홍태 | Off-axis reflector |
| WO2005045814A1 (en) * | 2003-11-06 | 2005-05-19 | Matsushita Electric Industrial Co., Ltd. | Deformable mirror, optical head and optical recording/reproducing device |
| CN100369138C (en) * | 2003-11-06 | 2008-02-13 | 松下电器产业株式会社 | Deformable mirror, optical head and optical record reproducing device |
| US8238223B2 (en) | 2003-11-06 | 2012-08-07 | Panasonic Corporation | Deformable mirror, optical head, and optical recording and playback device |
| JP2008048910A (en) * | 2006-08-24 | 2008-03-06 | Shimadzu Corp | X-ray grid |
| JP2016057529A (en) * | 2014-09-11 | 2016-04-21 | 株式会社デンソー | Three-dimensional shape creation device |
| CN108406097A (en) * | 2018-05-29 | 2018-08-17 | 深圳光韵达光电科技股份有限公司 | A kind of laser processing device and processing method being suitable for processing superhard material |
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