JP4042682B2 - 光ヘッド装置 - Google Patents
光ヘッド装置 Download PDFInfo
- Publication number
- JP4042682B2 JP4042682B2 JP2003379942A JP2003379942A JP4042682B2 JP 4042682 B2 JP4042682 B2 JP 4042682B2 JP 2003379942 A JP2003379942 A JP 2003379942A JP 2003379942 A JP2003379942 A JP 2003379942A JP 4042682 B2 JP4042682 B2 JP 4042682B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- mirror
- reflected
- lens
- piezoelectric element
- 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.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
- G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1362—Mirrors
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Elements Other Than Lenses (AREA)
- Optical Recording Or Reproduction (AREA)
Description
Claims (1)
- 球面収差を補正する光ヘッド装置であって、
レーザ光を発生する発光ダイオードと、
前記発光ダイオードから入射されるレーザ光を反射させるためのミラー駆動部と、
前記ミラー駆動部により反射した反射光を受けて球面収差を制御するレンズとを備え、
前記ミラー駆動部は、
前記レーザ光を反射するミラーと、
前記レンズへの反射光の入射角を変化させるために、前記ミラーにおいて、前記レーザ光が反射する面に対向して設けられ、前記ミラーの曲率を変化させる圧電素子とを含み、
前記レンズからの戻り光の光強度を検出する検知部と、
前記検知部の光強度に基づいて前記圧電素子に与える印加電圧を設定する電圧印加回路とをさらに備え、
前記検知部は、前記戻り光の中心付近の光強度と、前記中心付近以外の周辺の光強度とを比較して、その比較結果に基づいて前記電圧印加回路に前記印加電圧の調整を指示し、
前記圧電素子は、ユニモルフ構造を形成するように前記ミラーに付着され、
前記圧電素子は、前記レーザ光が反射する面に対向する面において、円形に配置され、半径方向の伸縮により、前記ミラーの曲率を変化させて前記反射光を収束光および発散光のいずれか一方に設定する、光ヘッド装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003379942A JP4042682B2 (ja) | 2003-11-10 | 2003-11-10 | 光ヘッド装置 |
EP04026220A EP1530206A3 (en) | 2003-11-10 | 2004-11-04 | Optical head device having deformable reflecting mirror |
US10/984,157 US20050122856A1 (en) | 2003-11-10 | 2004-11-09 | Optical head device having deformable reflecting mirror |
CNB200410095725XA CN100346179C (zh) | 2003-11-10 | 2004-11-10 | 具有可变形反射镜的光学头装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003379942A JP4042682B2 (ja) | 2003-11-10 | 2003-11-10 | 光ヘッド装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005141876A JP2005141876A (ja) | 2005-06-02 |
JP4042682B2 true JP4042682B2 (ja) | 2008-02-06 |
Family
ID=34431390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003379942A Expired - Fee Related JP4042682B2 (ja) | 2003-11-10 | 2003-11-10 | 光ヘッド装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050122856A1 (ja) |
EP (1) | EP1530206A3 (ja) |
JP (1) | JP4042682B2 (ja) |
CN (1) | CN100346179C (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100496855C (zh) * | 2005-08-19 | 2009-06-10 | 中国科学院光电技术研究所 | 精密加工激光切割机 |
CN100595627C (zh) * | 2007-04-16 | 2010-03-24 | 三菱电机株式会社 | 可变形镜及采用可变形镜的激光加工装置 |
JP5076232B2 (ja) * | 2007-05-09 | 2012-11-21 | 船井電機株式会社 | 形状可変ミラー、光ピックアップ装置 |
US8320229B2 (en) * | 2009-11-12 | 2012-11-27 | Hitachi Consumer Electronics Co., Ltd. | Variable mirror actuator and optical disc drive |
DE102010028111B4 (de) | 2010-04-22 | 2016-01-21 | Technische Universität Dresden | Mikromechanisches Element |
CN102324028A (zh) * | 2011-06-09 | 2012-01-18 | 高椿明 | 一种基于压电器件的猫眼结构的光学逆向识别*** |
CN102222378A (zh) * | 2011-06-23 | 2011-10-19 | 高椿明 | 调制反射式光学门禁*** |
CN103848393B (zh) * | 2013-12-04 | 2016-01-13 | 中国科学院长春光学精密机械与物理研究所 | 一种用于静电诱导技术的超精密平行度调整与检测*** |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5202875A (en) * | 1991-06-04 | 1993-04-13 | International Business Machines Corporation | Multiple data surface optical data storage system |
JPH09152505A (ja) * | 1995-11-30 | 1997-06-10 | Sharp Corp | 変形可能ミラー及びその製造方法及び光学装置並びに記録再生装置 |
DE69726527T2 (de) * | 1996-03-18 | 2004-09-23 | Seiko Epson Corp. | Optischer kopf und optisches aufzeichnungsgerät |
JPH1031107A (ja) * | 1996-07-16 | 1998-02-03 | Sharp Corp | 変形可能ミラー、及び光学装置、並びに記録再生装置 |
JPH10188319A (ja) * | 1996-12-26 | 1998-07-21 | Sharp Corp | 変形可能ミラーおよびその変形可能ミラーを用いた光記録再生装置 |
JP3545233B2 (ja) * | 1998-12-08 | 2004-07-21 | シャープ株式会社 | 球面収差検出装置および光ピックアップ装置 |
TW442783B (en) * | 1999-07-09 | 2001-06-23 | Ind Tech Res Inst | Folding mirror |
US6967916B2 (en) * | 2000-10-10 | 2005-11-22 | Matsushita Electric Industrial Co., Ltd. | Optical head apparatus, optical information recording and reproducing apparatus, method for detecting aberration and method for adjusting optical head apparatus |
EP1197767A3 (en) * | 2000-10-11 | 2004-12-22 | Olympus Optical Co., Ltd. | Optical apparatus comprising variable mirror |
JP3827940B2 (ja) * | 2000-11-15 | 2006-09-27 | シャープ株式会社 | 収差検出装置および光ピックアップ装置 |
JP2002358677A (ja) * | 2001-05-28 | 2002-12-13 | Hitachi Ltd | 光ヘッド及び光ディスク装置 |
US7260032B2 (en) * | 2001-08-06 | 2007-08-21 | Sharp Kabushiki Kaisha | Focal point adjusting method, and optical pickup device |
JP4373036B2 (ja) * | 2001-08-31 | 2009-11-25 | パイオニア株式会社 | 光ピックアップ |
JP2003157567A (ja) * | 2001-11-20 | 2003-05-30 | Olympus Optical Co Ltd | 光ピックアップ用変形可能ミラー |
KR20040071697A (ko) * | 2001-12-06 | 2004-08-12 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 광학주사장치 |
AU2003265077A1 (en) * | 2002-10-23 | 2004-05-13 | Koninklijke Philips Electronics N.V. | Spherical aberration detection |
JP2004347753A (ja) * | 2003-05-21 | 2004-12-09 | Matsushita Electric Ind Co Ltd | 形状可変ミラー素子及び形状可変ミラー素子の製造方法並びに形状可変ミラーユニット並びに光ピックアップ |
US7369482B2 (en) * | 2003-09-04 | 2008-05-06 | Matsushita Electric Industrial Co., Ltd. | Optical pick-up aberration correcting mirror, aberration correcting method and optical pick-up |
-
2003
- 2003-11-10 JP JP2003379942A patent/JP4042682B2/ja not_active Expired - Fee Related
-
2004
- 2004-11-04 EP EP04026220A patent/EP1530206A3/en not_active Withdrawn
- 2004-11-09 US US10/984,157 patent/US20050122856A1/en not_active Abandoned
- 2004-11-10 CN CNB200410095725XA patent/CN100346179C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2005141876A (ja) | 2005-06-02 |
CN1616994A (zh) | 2005-05-18 |
EP1530206A2 (en) | 2005-05-11 |
EP1530206A3 (en) | 2007-10-03 |
CN100346179C (zh) | 2007-10-31 |
US20050122856A1 (en) | 2005-06-09 |
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