KR890012280A - 광주사 장치 - Google Patents
광주사 장치 Download PDFInfo
- Publication number
- KR890012280A KR890012280A KR1019890000461A KR890000461A KR890012280A KR 890012280 A KR890012280 A KR 890012280A KR 1019890000461 A KR1019890000461 A KR 1019890000461A KR 890000461 A KR890000461 A KR 890000461A KR 890012280 A KR890012280 A KR 890012280A
- Authority
- KR
- South Korea
- Prior art keywords
- grating
- radiation source
- optical scanning
- diffraction
- scanning device
- Prior art date
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
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
-
- 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
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
-
- 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
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
-
- 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
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Semiconductor Lasers (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
내용 없음.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 동조식 방사원 및 회절격차를 갖는 디스크형 광기록 캐리어를 판독하기 위한 장치의 실시예에 대한 개략적인 사시도.
제 2 도는 도조식 방사원의 실시예에 대한 개략도.
제 3 도는 본 발명에 따라 트랙킹 에러신호를 발새하는 원리도.
Claims (17)
- 기록 트랙을 광 주사하기 위하여 주사빔을 공급하는 방사원 및, 기록 트랙상의 주사점에서 방사원을 이메징하는 이메징 광시스템을 구비하는 장치에 있어서, 회절격자는 보다 높은 회절 차수로 격자에 의해 회절된 빔의 방사만을 주사점에서 집속하도록 방사원과 기록 트랙간의 방사경로에 배열되며, 방사원은 파장이 동조가능한 레이저로 구성되는 것을 특징으로 하는 광주사 장치.
- 제 1 항에 있어서, 방사원은 모노식 다이오드 레이저로서 동작하는 반도체 다이오드 및, 레이저 방사용 동조 공진 공동으로서 동작하는 광도전층을 구비하여 상기 다이오드에 광결합된 소자로 구성되는 것을 특징으로 하는 광주사 장치.
- 제1 또는 2항에 있어서, 방사원용 제어신호는 크기 및 부호가 트랙킹 에러신호에 비례하는 DC신호이며, 주사빔의 파장이 상기 DC신호에 의하여 최적값으로 동조되는 것을 특징으로 하는 광주사 장치.
- 제 1,2 또는 3항에 있어서, 방사원은 평균값에 비해 소진폭을 갖는 방사원의 파장을 주기적으로 변화시키는 AC신호원에 결합되며, 광전자 검출장치는 주파수가 파장의 주기적인 변화 주파수와 동일한 기준신호에 의하여 기록 트랙의 평면으로부터 나온 방사를 동기성 검출하도록 제공된 것을 특징으로 하는 광주사 장치.
- 제 4 항에 있어서, 이메징 광 시스템이 렌즈작용을 갖는 회절격자로 구성되는 것을 특징으로 하는 광주사 장치.
- 제 1,2,3,4 또는 5항에 있어서, 회절격차는 반사 격자이며, 격자의 법선과 주사빔의 주요 광선간의 입사각은 45°보다는 상당히 크며 90°보다는 작은 것을 특징으로 하는 광주사 장치.
- 방사원이, 빔의 제 1 측을 통과하며 활성층과 평행인 측방향 평면의 구멍각이 빔의 제 1 축을 통과하며 활성층과 트래버스인 트래버스 평면의 구멍각 보다 작은 레이저 빔을 방출하는 활성층을 갖는 다이오드 레이저를 구비한 제 6 항에 있어서, 격사 스트립은 측방향 평면과 트래버스인 것을 특징으로 하는 광주사 장치.
- 선행한 항중 어느 한 항에 있어서, 회절격자는 위상격자인 것을 특징으로 하는 광주사 장치.
- 제 8 항에 있어서, 위상격자는 프로필 격자로 구성되는 것을 특징으로 하는 광주사 장치.
- 제 8 항에 있어서, 위상격자는 제 1 평균 굴절율 및 제 2 평균 굴절율을 교대로 갖는 다수의 평행 스트립을 구비한 볼륨격자인 것을 특징으로 하는 광주사 장치.
- 제 1 항에 있어서, 격자 피라미터는 입자 방사 강도의 최대 퍼센트가 선택된 회절차수로 구성되도록 선택되는 것을 특징으로 하는 광주사 장치.
- 제1 또는 11항에 있어서, 제 1 회절 차수중 하나로 회절된 서브빔은 주사점에서 접속되는 것을 특징으로 하는 광주사 장치.
- 제1 또는 11항에 있어서, 제 2 또는 보다 높은 차수의 서브빔을 주사점에서 접속되는 것을 특징으로 하는 광주사 장치.
- 제 1 항에 있어서, 회절격자는 직각을 갖는 삼각형 프리즘의 경사진 측상에 배열되며, 이 프리즘의 나머지 다른 두측은 입사빔과 수직이며 기록 트랙으로 향하는 빔과 수직인 것을 특징으로 하는 광주사 장치.
- 제 14 항에 있어서, 회절격자와 면하며 회질격자에 의해 반사된 빔이 방출되는 프리즘의 표면이 곡면을 이루는 것을 특징으로 하는 광주사 장치.
- 제 15 항에 있어서, 만곡된 표면은 비구면 표면이며, 회절격자는 선형격자인 것을 특징으로 하는 광주사 장치.
- 제 15 항에 있어서, 만곡된 표면은 구면이며 격자는 수차 보정용 구면율을 갖는 것을 특징으로 하는 광주사 장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8800133A NL8800133A (nl) | 1988-01-21 | 1988-01-21 | Inrichting voor het met optische straling aftasten van een informatievlak. |
NL8800133 | 1988-01-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890012280A true KR890012280A (ko) | 1989-08-25 |
KR0142089B1 KR0142089B1 (ko) | 1998-06-01 |
Family
ID=19851627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019890000461A KR0142089B1 (ko) | 1988-01-21 | 1989-01-18 | 광 주사 장치 |
Country Status (9)
Country | Link |
---|---|
US (1) | US4918679A (ko) |
EP (1) | EP0326203B1 (ko) |
JP (1) | JP2740226B2 (ko) |
KR (1) | KR0142089B1 (ko) |
AT (1) | ATE89094T1 (ko) |
DE (1) | DE68906274T2 (ko) |
ES (1) | ES2040978T3 (ko) |
HK (1) | HK88094A (ko) |
NL (1) | NL8800133A (ko) |
Families Citing this family (44)
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US5060212A (en) * | 1987-08-17 | 1991-10-22 | Ricoh Company, Ltd. | Integrated optical pick-up device |
US5115423A (en) * | 1988-01-07 | 1992-05-19 | Ricoh Company, Ltd. | Optomagnetic recording/reproducing apparatus |
JPH01311428A (ja) * | 1988-06-09 | 1989-12-15 | Matsushita Electric Ind Co Ltd | 光ヘッド装置及びこれを用いた光情報装置 |
DE3938639A1 (de) * | 1988-11-21 | 1990-05-23 | Ricoh Kk | Optische aufzeichnungs-/wiedergabeeinrichtung |
EP0374841B1 (en) * | 1988-12-20 | 1994-03-09 | Nec Corporation | Optical head device for optimally detecting a focussing error |
JP2684763B2 (ja) * | 1989-04-24 | 1997-12-03 | ソニー株式会社 | 光学記録および/または再生装置 |
DE3923328A1 (de) * | 1989-07-14 | 1991-01-24 | Thomson Brandt Gmbh | Magneto-optisches aufnahme- und/oder wiedergabegeraet |
US5101389A (en) * | 1989-08-04 | 1992-03-31 | Ricoh Company, Ltd. | Optical information recording/reproducing apparatus |
JPH03185633A (ja) * | 1989-12-13 | 1991-08-13 | Matsushita Electric Ind Co Ltd | 光記録再生装置 |
JPH0460933A (ja) * | 1990-06-26 | 1992-02-26 | Matsushita Electric Ind Co Ltd | 光ピックアップヘッド装置 |
EP0468685B1 (en) * | 1990-07-24 | 1997-09-24 | Canon Kabushiki Kaisha | Optical information recording-reproducing apparatus |
CA2079620A1 (en) * | 1991-10-25 | 1993-04-26 | Roeland M. T. Hekker | Holographic elements for an optical recording system |
ATE150573T1 (de) * | 1991-12-30 | 1997-04-15 | Philips Electronics Nv | Optische einrichtung und mit einer solchen optischen einrichtung versehenes gerät zum abtasten einer informationsebene |
KR930020374A (ko) * | 1992-03-31 | 1993-10-19 | 정용문 | 광픽업 |
US5361269A (en) * | 1993-06-28 | 1994-11-01 | Yasuo Kamatani | Non-mechanical laser beam scanning device employing a diffraction grating and an acousto-optic deflector for optical recording and readout |
US5533042A (en) * | 1993-10-12 | 1996-07-02 | Fuji Xerox Co., Ltd. | Semiconductor laser device and driving method for the same as well as tracking servo system employing the same |
JPH07182687A (ja) * | 1993-12-24 | 1995-07-21 | Sharp Corp | 光ピックアップ |
JPH07287883A (ja) * | 1994-04-19 | 1995-10-31 | Victor Co Of Japan Ltd | 光集積回路 |
JPH08161767A (ja) * | 1994-12-05 | 1996-06-21 | Yasuo Kamatani | 光情報記録再生方法及び装置 |
US6259668B1 (en) * | 1996-02-14 | 2001-07-10 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses |
US6222812B1 (en) | 1996-08-29 | 2001-04-24 | Samsung Electronics Co., Ltd. | Optical pickup using an optical phase plate |
US6639889B1 (en) | 1997-02-13 | 2003-10-28 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats |
US6304540B1 (en) | 1998-03-30 | 2001-10-16 | Samsung Electronics Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
JP2002515986A (ja) * | 1997-05-16 | 2002-05-28 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 波長選択性光学―機械式走査装置及びその用途 |
US6307799B1 (en) | 1998-12-03 | 2001-10-23 | Nanyang Technological University | Acousto optic data storage system on a stationary and high density data storage media |
NL1015136C2 (nl) * | 1999-05-10 | 2006-05-18 | Sharp Kk | Optische opname/weergaveinrichting. |
JP2000322757A (ja) | 1999-05-12 | 2000-11-24 | Sharp Corp | 光記録再生装置 |
TW501116B (en) * | 2000-07-05 | 2002-09-01 | Matsushita Electric Ind Co Ltd | Optical device, optical semiconductor device, and optical information processor comprising them |
JP3639212B2 (ja) * | 2000-12-11 | 2005-04-20 | 株式会社オプトウエア | 光情報記録方法 |
KR100408401B1 (ko) * | 2001-02-23 | 2003-12-06 | 삼성전자주식회사 | 광 기록/재생기기 및 트랙킹 에러신호 검출방법 |
KR20030093683A (ko) * | 2002-06-05 | 2003-12-11 | 삼성전자주식회사 | 호환형 광픽업 |
JP2004158080A (ja) * | 2002-11-05 | 2004-06-03 | Sharp Corp | 光ディスクドライブ装置、及び光ピックアップのチルト補正方法 |
US20060066948A1 (en) * | 2004-09-24 | 2006-03-30 | Matsushita Electric Industrial Co., Ltd. | Multi-level and gray-level diffraction gratings |
TWI287222B (en) * | 2004-11-12 | 2007-09-21 | Hon Hai Prec Ind Co Ltd | Optical pickup device |
US7593305B1 (en) | 2005-09-09 | 2009-09-22 | Seagate Technology Llc | Removing spherical aberrations for two photon recording |
JP2007080466A (ja) * | 2005-09-16 | 2007-03-29 | Toshiba Corp | 光ヘッド装置及び光ディスク装置 |
JP4925256B2 (ja) * | 2006-01-20 | 2012-04-25 | 株式会社リコー | 光源ユニット、光検出ユニット、光ピックアップ装置及び光ディスク装置 |
JP4683553B2 (ja) * | 2005-11-21 | 2011-05-18 | 株式会社リコー | 光源ユニット、光検出ユニット、光ピックアップ装置及び光ディスク装置 |
US8174952B2 (en) * | 2005-11-21 | 2012-05-08 | Ricoh Company, Ltd. | Light source unit, optical detector unit, optical pickup device, and optical disk device |
JP2008130128A (ja) * | 2006-11-17 | 2008-06-05 | Funai Electric Co Ltd | 光ピックアップ装置 |
US10613281B2 (en) * | 2008-07-09 | 2020-04-07 | Luxtera, Inc. | Method and system for coupling a light source assembly to an optical integrated circuit |
US9971107B2 (en) * | 2008-07-09 | 2018-05-15 | Luxtera, Inc. | Method and system for coupling a light source assembly to an optical integrated circuit |
US9245572B2 (en) * | 2012-11-21 | 2016-01-26 | Oracle International Corporation | Optical tape pick up unit with holographic optical element |
US20220155444A1 (en) * | 2019-03-15 | 2022-05-19 | Unm Rainforest Innovations | Integrated bound-mode angular sensors |
Family Cites Families (12)
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NL160138C (nl) | 1972-05-11 | 1979-09-17 | Philips Nv | Inrichting voor het uitlezen van een vlakke registratie- drager. |
US3985952A (en) * | 1974-02-04 | 1976-10-12 | Zenith Radio Corporation | Elasto-optic device for spot wobble in a video disc player |
NL174609C (nl) | 1975-10-15 | 1984-07-02 | Philips Nv | Volgspiegelinrichting in een optische platenspeler. |
NL8005633A (nl) | 1980-10-13 | 1982-05-03 | Philips Nv | Inrichting voor het uitlezen en/of inschrijven van een optisch uitleesbare informatiestruktuur. |
US4520472A (en) * | 1983-02-07 | 1985-05-28 | Rca Corporation | Beam expansion and relay optics for laser diode array |
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US4733065A (en) * | 1984-06-27 | 1988-03-22 | Canon Kabushiki Kaisha | Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom |
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EP0241942B1 (en) * | 1986-04-18 | 1992-03-04 | Mitsubishi Denki Kabushiki Kaisha | Optical type head device |
JPS634432A (ja) * | 1986-06-25 | 1988-01-09 | Matsushita Electric Ind Co Ltd | 光ピツクアツプ |
NL8603010A (nl) * | 1986-11-27 | 1988-06-16 | Philips Nv | Optische aftastinrichting. |
NL8800057A (nl) * | 1988-01-11 | 1989-08-01 | Philips Nv | Optische aftastinrichting. |
-
1988
- 1988-01-21 NL NL8800133A patent/NL8800133A/nl not_active Application Discontinuation
- 1988-03-28 US US07/173,914 patent/US4918679A/en not_active Expired - Fee Related
-
1989
- 1989-01-16 EP EP89200086A patent/EP0326203B1/en not_active Expired - Lifetime
- 1989-01-16 DE DE89200086T patent/DE68906274T2/de not_active Expired - Fee Related
- 1989-01-16 AT AT89200086T patent/ATE89094T1/de active
- 1989-01-16 ES ES198989200086T patent/ES2040978T3/es not_active Expired - Lifetime
- 1989-01-18 KR KR1019890000461A patent/KR0142089B1/ko not_active IP Right Cessation
- 1989-01-18 JP JP1007887A patent/JP2740226B2/ja not_active Expired - Lifetime
-
1994
- 1994-08-25 HK HK88094A patent/HK88094A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0326203A1 (en) | 1989-08-02 |
NL8800133A (nl) | 1989-08-16 |
KR0142089B1 (ko) | 1998-06-01 |
US4918679A (en) | 1990-04-17 |
DE68906274D1 (de) | 1993-06-09 |
HK88094A (en) | 1994-09-02 |
JPH01224933A (ja) | 1989-09-07 |
DE68906274T2 (de) | 1993-11-25 |
ATE89094T1 (de) | 1993-05-15 |
JP2740226B2 (ja) | 1998-04-15 |
ES2040978T3 (es) | 1993-11-01 |
EP0326203B1 (en) | 1993-05-05 |
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