KR100207682B1 - 광픽업장치의 레이저 비점격차 보상방법 - Google Patents
광픽업장치의 레이저 비점격차 보상방법 Download PDFInfo
- Publication number
- KR100207682B1 KR100207682B1 KR1019960018514A KR19960018514A KR100207682B1 KR 100207682 B1 KR100207682 B1 KR 100207682B1 KR 1019960018514 A KR1019960018514 A KR 1019960018514A KR 19960018514 A KR19960018514 A KR 19960018514A KR 100207682 B1 KR100207682 B1 KR 100207682B1
- Authority
- KR
- South Korea
- Prior art keywords
- light
- optical
- laser
- collimating lens
- compensation method
- 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
Links
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
- G11B7/1372—Lenses
- G11B7/1376—Collimator lenses
-
- 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
- G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Abstract
Description
Claims (4)
- 레이저 광을 출사하는 반도체 레이저와, 이 반도체 레이저의 앞면에 설치되어 입사광을 평행광으로 변환하는 콜리메이팅렌즈와, 광축상에 배치되어 입사광의 진행경로를 변환하는 광경로변환수단과, 상기 광경로변환수단과 기록매체 사이의 광경로 상에 배치되어 상기 기록매체의 기록면에 광스폿이 형성되도록 입사광을 집속하는 대물렌즈와, 상기 기록면에서 반사된 광을 수광하여 정보 및 오차신호를 검출하는 광검출기를 포함하여 된 광픽업장치의 레이저 비점격차 보상방법에 있어서, 상기 콜리메이팅렌즈를 상기 반도체 레이저의 활성층의 폭방향으로 소정 각도 기울여 배치시킨 것을 특징으로 하는 광픽업장치의 레이저 비점격차 보상방법.
- 제1항에 있어서, 상기 콜리메이팅렌즈의 중심은 상기 광축 상에 위치된 것을 특징으로 하는 광픽업장치의 레이저 비점격차 보상방법.
- 제1항에 있어서, 상기 광경로변환수단은 상기 빔스프리터인 것을 특징으로 하는 광픽업장치의 레이저 비점격차 보상방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 상기 광경로변환수단과 상기 광검출기 사이의 광축 상에 비점수차렌즈가 더 포함된 것을 특징으로 하는 광픽업장치의 레이저 비점격차 보상방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960018514A KR100207682B1 (ko) | 1996-05-29 | 1996-05-29 | 광픽업장치의 레이저 비점격차 보상방법 |
CN97113125A CN1100313C (zh) | 1996-05-29 | 1997-05-26 | 光学头 |
JP9138970A JPH1064103A (ja) | 1996-05-29 | 1997-05-28 | 光ピックアップ装置 |
US08/865,141 US5872760A (en) | 1996-05-29 | 1997-05-29 | Optical pickup for correcting an astigmatic difference of light |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960018514A KR100207682B1 (ko) | 1996-05-29 | 1996-05-29 | 광픽업장치의 레이저 비점격차 보상방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970076589A KR970076589A (ko) | 1997-12-12 |
KR100207682B1 true KR100207682B1 (ko) | 1999-07-15 |
Family
ID=19460075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960018514A Expired - Fee Related KR100207682B1 (ko) | 1996-05-29 | 1996-05-29 | 광픽업장치의 레이저 비점격차 보상방법 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5872760A (ko) |
JP (1) | JPH1064103A (ko) |
KR (1) | KR100207682B1 (ko) |
CN (1) | CN1100313C (ko) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6195315B1 (en) * | 1997-07-11 | 2001-02-27 | Ricoh Company, Ltd. | Optical disk apparatus compatible with different types of mediums |
US20010050892A1 (en) * | 1997-07-11 | 2001-12-13 | Yoshitaka Takahashi | Optical disk apparatus compatible with different types of mediums |
JP3659089B2 (ja) * | 1999-10-25 | 2005-06-15 | 株式会社日立製作所 | 光ヘッド及びそれを用いた光学的情報媒体記録再生装置 |
TW563120B (en) * | 1999-10-26 | 2003-11-21 | Toshiba Corp | Optical head and optical disk apparatus having the same |
SG109477A1 (en) * | 2001-11-20 | 2005-03-30 | Sony Corp | An optical system |
JP4306652B2 (ja) * | 2005-07-15 | 2009-08-05 | 船井電機株式会社 | 光ピックアップ装置 |
CN100501846C (zh) * | 2005-08-26 | 2009-06-17 | 鸿富锦精密工业(深圳)有限公司 | 光学模组及采用所述光学模组的光学记录/再现装置 |
CN1953070B (zh) * | 2005-10-21 | 2010-05-26 | 鸿富锦精密工业(深圳)有限公司 | 光束整形装置及使用该装置的光学记录/再现装置 |
CN100414345C (zh) * | 2006-09-21 | 2008-08-27 | 中北大学 | 快速成形激光二极管能量源及其设备 |
JP2008090878A (ja) * | 2006-09-29 | 2008-04-17 | Funai Electric Co Ltd | 光ピックアップ装置 |
JP4989302B2 (ja) * | 2007-05-10 | 2012-08-01 | Hoya株式会社 | 光ピックアップ光学系組付方法 |
US8085289B1 (en) | 2008-02-04 | 2011-12-27 | Hewlett-Packard Development Company, L.P. | Reducing side lobes within optical irradiance distributions used to selectively expose photosensitive surface |
JP2011154742A (ja) * | 2010-01-26 | 2011-08-11 | Sanyo Electric Co Ltd | 光ピックアップ装置 |
WO2012014283A1 (ja) * | 2010-07-27 | 2012-02-02 | 三菱電機株式会社 | 光モジュール |
JP2012098601A (ja) * | 2010-11-04 | 2012-05-24 | Sumitomo Electric Ind Ltd | 偏波合成分離装置 |
CN102529261B (zh) * | 2011-12-15 | 2015-04-22 | 四川龙华光电薄膜股份有限公司 | 反光薄膜 |
JP6439391B2 (ja) * | 2014-11-06 | 2018-12-19 | 株式会社リコー | 光源装置及び投射表示装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61184735A (ja) * | 1985-02-12 | 1986-08-18 | Nec Corp | マルチビ−ム型光ピツクアツプ装置 |
JPS6247833A (ja) * | 1985-08-28 | 1987-03-02 | Hitachi Ltd | 光デイスク装置 |
JPS62291728A (ja) * | 1986-06-11 | 1987-12-18 | Brother Ind Ltd | 反射型光学デイスクの読取り装置 |
JPS63168854A (ja) * | 1986-12-29 | 1988-07-12 | Nec Home Electronics Ltd | 光学ヘツド |
DE4135011C2 (de) * | 1990-10-23 | 1996-06-05 | Asahi Optical Co Ltd | Bildplattengerät |
US5777961A (en) * | 1994-06-27 | 1998-07-07 | Nec Corporation | Astigmatic difference correcting method for optical head and apparatus therefor |
-
1996
- 1996-05-29 KR KR1019960018514A patent/KR100207682B1/ko not_active Expired - Fee Related
-
1997
- 1997-05-26 CN CN97113125A patent/CN1100313C/zh not_active Expired - Fee Related
- 1997-05-28 JP JP9138970A patent/JPH1064103A/ja active Pending
- 1997-05-29 US US08/865,141 patent/US5872760A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1100313C (zh) | 2003-01-29 |
JPH1064103A (ja) | 1998-03-06 |
US5872760A (en) | 1999-02-16 |
KR970076589A (ko) | 1997-12-12 |
CN1180886A (zh) | 1998-05-06 |
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