KR870004426A - 광 주사 장치 - Google Patents
광 주사 장치 Download PDFInfo
- Publication number
- KR870004426A KR870004426A KR1019860008682A KR860008682A KR870004426A KR 870004426 A KR870004426 A KR 870004426A KR 1019860008682 A KR1019860008682 A KR 1019860008682A KR 860008682 A KR860008682 A KR 860008682A KR 870004426 A KR870004426 A KR 870004426A
- Authority
- KR
- South Korea
- Prior art keywords
- angle
- scanning device
- optical scanning
- sublattices
- photodiode
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/16—Beam splitting or combining systems used as aids for focusing
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/4233—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application
- G02B27/4238—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application in optical recording or readout devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/44—Grating systems; Zone plate systems
-
- 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
-
- 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
- G11B7/0908—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 focusing 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
- G11B7/08—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
- G11B7/0908—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 focusing only
- G11B7/0916—Foucault or knife-edge methods
-
- 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
- G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
-
- 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
- G11B7/094—Methods and circuits for servo offset compensation
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명을 구현하는 판독장치의 개략도.
제2도는 상기 장치에 사용되는 합성 회절격자 및 상기 격자에 대한 검출기의 방향을 도시한 개략도.
도면의 주요부분에 대한 부호의 설명
1:캐리어, 2:정보면, 3:트랙, 4:방사원, 5:빔, 6:대물렌즈 시스템, 8:축, 1,11:보조격자, 13,14:격자스트립, 26:경계라인.
Claims (3)
- 방사원과, 정보면에 주사스폿을 형성하기 위해 방사원으로부터 방출되는 방사빔을 접속하기 위한 대물렌즈 시스템과, 정보면에 의해 반사되는 빔의 통로에 배치되어 상기 빔을 두 보조빔으로 분할시키기 위한 회절격자를 구비하며, 여기서 상기 격자는 두 보조격자 및 각 쌍이 하나의 보조빔에 관련된 두 검출기 쌍을 가지는 방사-감광검출 시스템을 구비하여, 정보면을 광학적으로 주사하기 위한 장치에 있어서, 보조격자는 동일한 격자주기를 가지며 제1보조격자의 격자라인은 제1각도로 뻗어 있으며, 제2보조격자의 격자라인은 제2각도로 뻗어 있으며, 여기서 제2각도는 두 보조격자의 경계라인에 대하여 제1각도와 크기는 같으나 방향이 반대이며, 각 검출기쌍에 대해 검출기 사이의 경계라인은 관련 보조-격자의 격자라인의 방향에 대해 횡단하게 뻗어 있는 것을 특징으로 하는 광주사장치.
- 제1항에 있어서, 상기 검출기는 광다이오드이며, 상기 광다이오드가 단일 기판상에서 집적되는 것을 특징으로 하는 광주사장치.
- 제2항에 있어서, 상기 방사원은 광레이저이며, 상기 다이오드레이저 및 광다이오드는 단일 기판상에서 집적되는 것을 특징으로 하는 광주사장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8502835A NL8502835A (nl) | 1985-10-17 | 1985-10-17 | Inrichting voor het met optische straling aftasten van een informatievlak. |
NL8502835 | 1985-10-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR870004426A true KR870004426A (ko) | 1987-05-09 |
KR950008949B1 KR950008949B1 (ko) | 1995-08-09 |
Family
ID=19846726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019860008682A KR950008949B1 (ko) | 1985-10-17 | 1986-10-16 | 광주사장치 |
Country Status (9)
Country | Link |
---|---|
US (1) | US4665310A (ko) |
EP (1) | EP0219908B1 (ko) |
JP (1) | JPH0743834B2 (ko) |
KR (1) | KR950008949B1 (ko) |
AU (1) | AU584046B2 (ko) |
CA (1) | CA1263183A (ko) |
DE (1) | DE3674136D1 (ko) |
ES (1) | ES2018158B3 (ko) |
NL (1) | NL8502835A (ko) |
Families Citing this family (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0222238B2 (en) * | 1985-11-11 | 1998-02-11 | Sharp Kabushiki Kaisha | Pick-up device |
JP2647829B2 (ja) * | 1985-12-10 | 1997-08-27 | 日本電気株式会社 | 光ヘッド装置 |
EP0228620B1 (en) * | 1985-12-10 | 1991-06-05 | Nec Corporation | Optical head comprising a diffraction grating for directing two or more diffracted beams to optical detectors |
FR2597249B1 (fr) * | 1986-04-11 | 1988-06-17 | Thomson Csf | Dispositif de lecture optique de support d'enregistrement optique |
US4794585A (en) * | 1986-05-06 | 1988-12-27 | Lee Wai Hon | Optical head having a hologram lens and polarizers for use with magneto-optic medium |
KR900008380B1 (ko) * | 1986-07-01 | 1990-11-17 | 미쓰비시덴기 가부시기 가이샤 | 광학식 헤드장치 |
DE3786497T2 (de) * | 1986-07-18 | 1994-02-17 | Nippon Electric Co | Doppelbrechendes Beugungsgitter und optischer Kopf, in welchem ein linearpolarisierter Strahl auf dieses Gitter gelenkt wird. |
NL8601974A (nl) * | 1986-08-01 | 1988-03-01 | Philips Nv | Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak. |
EP0258890B1 (en) * | 1986-09-02 | 1993-03-31 | Fuji Photo Film Co., Ltd. | Optical pickup apparatus |
US4905216A (en) * | 1986-12-04 | 1990-02-27 | Pencom International Corporation | Method for constructing an optical head by varying a hologram pattern |
US5270996A (en) * | 1986-12-25 | 1993-12-14 | Nec Corporation | Optical head with diffraction grating producing five diffracted detection light beams |
JPS63191421U (ko) * | 1987-05-26 | 1988-12-09 | ||
NL8701749A (nl) * | 1987-07-24 | 1989-02-16 | Philips Nv | Inrichting voor het met optische straling aftasten van een informatievlak. |
NL8702245A (nl) * | 1987-09-21 | 1989-04-17 | Philips Nv | Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak. |
JPH0194542A (ja) * | 1987-10-05 | 1989-04-13 | Matsushita Electric Ind Co Ltd | 光ヘッド装置 |
JPH07101519B2 (ja) * | 1987-10-05 | 1995-11-01 | 松下電器産業株式会社 | 光ヘッド装置 |
US4929823A (en) * | 1987-10-05 | 1990-05-29 | Matsushita Electric Industrial Co., Ltd. | Optical pickup head with holographic servo signal detection using a spot size detection system |
JPH0198131A (ja) * | 1987-10-09 | 1989-04-17 | Sharp Corp | 光学型情報再生装置 |
EP0318912B1 (en) * | 1987-11-30 | 1994-02-02 | Nec Corporation | An optical head |
JPH01151022A (ja) * | 1987-12-09 | 1989-06-13 | Sharp Corp | 光ピックアップ装置 |
JPH0770065B2 (ja) * | 1988-04-20 | 1995-07-31 | シャープ株式会社 | 光ピックアップ装置 |
JPH06841Y2 (ja) * | 1988-04-20 | 1994-01-05 | シャープ株式会社 | 光半導体装置 |
US5062098A (en) * | 1988-10-19 | 1991-10-29 | Matsushita Electric Industrial Co., Ltd. | Optical pick-up device having holographic element |
US5049732A (en) * | 1988-10-21 | 1991-09-17 | Sharp Kabushiki Kaisha | Optical pickup device with diffraction device |
US5315574A (en) * | 1988-10-28 | 1994-05-24 | Matsushita Electric Industrial Co., Ltd. | Optical head with polarized beam hologram |
JPH02121131A (ja) * | 1988-10-28 | 1990-05-09 | Olympus Optical Co Ltd | 光ピックアップ |
NL8802689A (nl) * | 1988-11-03 | 1990-06-01 | Koninkl Philips Electronics Nv | Inrichting voor het met optische straling aftasten van een stralingsreflekterend oppervlak. |
KR940001999B1 (ko) * | 1989-06-06 | 1994-03-12 | 샤프 가부시끼가이샤 | 광 픽업장치 |
JP2683293B2 (ja) * | 1990-06-19 | 1997-11-26 | 松下電器産業株式会社 | 光ヘッド装置 |
JP2684822B2 (ja) * | 1990-06-06 | 1997-12-03 | 松下電器産業株式会社 | 光ピックアップヘッド装置 |
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 |
NL9002841A (nl) * | 1990-12-21 | 1992-07-16 | Philips Nv | Werkwijze en inrichting voor het langs optische weg inschrijven, uitlezen, en wissen van een meervlaks registratiedrager, en registratiedrager geschikt voor deze werkwijze en inrichting. |
JP2870236B2 (ja) * | 1991-07-22 | 1999-03-17 | 日本電気株式会社 | 光学式記録再生装置 |
JPH05282723A (ja) * | 1992-03-31 | 1993-10-29 | Matsushita Electric Ind Co Ltd | 光磁気ヘッド装置 |
JPH05290403A (ja) * | 1992-04-08 | 1993-11-05 | Matsushita Electric Ind Co Ltd | 光ピックアップヘッド装置 |
US5258871A (en) * | 1992-06-01 | 1993-11-02 | Eastman Kodak Company | Dual diffraction grating beam splitter |
DE69319673T2 (de) * | 1992-08-12 | 1999-02-25 | Philips Electronics Nv | Einrichtung zur optischen Abtastung einer Oberfläche |
US5434708A (en) * | 1992-09-08 | 1995-07-18 | Eastman Kodak Company | Optical reproducing apparatus ultilizing a polarization beam splitter |
US5406541A (en) * | 1992-12-29 | 1995-04-11 | Eastman Kodak Company | Apparatus and method for a dual half-aperture focus sensor system |
US5360970A (en) * | 1992-12-29 | 1994-11-01 | Eastman Kodak Company | Apparatus and method for a single return path signal sensor system |
US5353272A (en) * | 1992-12-29 | 1994-10-04 | Eastman Kodak Company | Apparatus and method for a modified half-aperture focus/tracking/data sensor system |
KR100326688B1 (ko) * | 1993-01-04 | 2002-06-20 | 요트.게.아. 롤페즈 | 광주사장치및방사원검출장치 |
EP0605929B1 (en) * | 1993-01-04 | 1998-07-29 | Koninklijke Philips Electronics N.V. | Device for optically scanning a surface |
JPH07311961A (ja) * | 1994-05-16 | 1995-11-28 | Nippon Steel Corp | 光ピックアップ |
JPH10511496A (ja) * | 1995-11-27 | 1998-11-04 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | テープ型レコードキャリアを走査する光学装置 |
WO1997023871A1 (en) | 1995-12-21 | 1997-07-03 | Philips Electronics N.V. | Optical scanning device |
JPH11501443A (ja) * | 1995-12-27 | 1999-02-02 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | 光学的に読取可能な記録媒体を走査する装置 |
EP0812457B1 (en) * | 1995-12-27 | 2002-06-26 | Koninklijke Philips Electronics N.V. | Device for scanning an optically readable record carrier |
JPH09198706A (ja) * | 1996-01-22 | 1997-07-31 | Fujitsu Ltd | 光ディスク装置用光ピックアップのホログラム光学系 |
US5886971A (en) * | 1996-09-27 | 1999-03-23 | Digital Optics Corporation | Optical head structures including support substrates adjacent transparent substrates and related methods |
US5771218A (en) * | 1996-09-27 | 1998-06-23 | Digital Optics Corporation | Passively aligned integrated optical head including light source, detector, and optical element and methods of forming same |
DE69833672T2 (de) | 1997-11-07 | 2006-09-07 | Koninklijke Philips Electronics N.V. | Optische abtastvorrichtung |
JPH11223729A (ja) * | 1998-02-09 | 1999-08-17 | Sankyo Seiki Mfg Co Ltd | 偏光分離素子およびその製造方法 |
JP2002525781A (ja) | 1998-09-21 | 2002-08-13 | 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 | 少なくとも2つの情報層を有する光記録担体を走査する装置 |
TW501116B (en) * | 2000-07-05 | 2002-09-01 | Matsushita Electric Ind Co Ltd | Optical device, optical semiconductor device, and optical information processor comprising them |
JP2002163831A (ja) * | 2000-11-27 | 2002-06-07 | Sharp Corp | 半導体レーザ装置および光ピックアップ装置 |
JP2002288856A (ja) * | 2001-03-27 | 2002-10-04 | Sharp Corp | 光ピックアップ |
WO2004109666A1 (en) * | 2003-06-11 | 2004-12-16 | Koninklijke Philips Electronics N.V. | Apparatus for reading/writing an optical storage carrier |
CN104678561B (zh) * | 2013-12-02 | 2017-04-05 | 中国科学院西安光学精密机械研究所 | 衍射光栅非规则激光焦斑图像自适应聚焦方法及聚焦装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3175093A (en) * | 1960-06-25 | 1965-03-23 | Philips Corp | Photosensitive device for digital measurement of the displacement of an object |
US3668404A (en) * | 1970-09-29 | 1972-06-06 | Kurt Lehovec | Electro-optical microtransducer comprising diffractive element monolithically integrated with photoelectric device |
US4034403A (en) * | 1971-03-11 | 1977-07-05 | U.S. Philips Corporation | Apparatus for positional control of a reading head in a device for reproducing optically coded video disk recordings |
US4374323A (en) * | 1978-06-30 | 1983-02-15 | Discovision Associates | Focusing apparatus for use in a system for recovering information from an optically-readable storage medium |
US4338012A (en) * | 1980-10-31 | 1982-07-06 | Canon Kabushiki Kaisha | Focusing screen |
JPS5877039A (ja) * | 1981-11-01 | 1983-05-10 | Victor Co Of Japan Ltd | 情報信号再生装置 |
US4464567A (en) * | 1981-06-30 | 1984-08-07 | Storage Technology Corporation | Photoelectric information and focus detector |
US4462095A (en) * | 1982-03-19 | 1984-07-24 | Magnetic Peripherals Inc. | Moving diffraction grating for an information track centering system for optical recording |
JPS58220248A (ja) * | 1982-06-15 | 1983-12-21 | Nippon Kogaku Kk <Nikon> | 光学式ピツクアツプ |
NL8303932A (nl) * | 1982-11-17 | 1984-06-18 | Pioneer Electronic Corp | Opneeminrichting voor optische plaat. |
JPS6028044A (ja) * | 1983-07-26 | 1985-02-13 | Toshiba Corp | 光学式情報読取装置 |
NL8304402A (nl) * | 1983-12-22 | 1985-07-16 | Philips Nv | Optische aftasteenheid met een focusfout-detectiestelsel. |
US4670869A (en) * | 1984-01-03 | 1987-06-02 | Magnetic Peripherals Inc. | Switching laser beam apparatus with recombined beam for recording |
FR2597249B1 (fr) * | 1986-04-11 | 1988-06-17 | Thomson Csf | Dispositif de lecture optique de support d'enregistrement optique |
NL8702245A (nl) * | 1987-09-21 | 1989-04-17 | Philips Nv | Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak. |
-
1985
- 1985-10-17 NL NL8502835A patent/NL8502835A/nl not_active Application Discontinuation
- 1985-12-26 US US06/817,190 patent/US4665310A/en not_active Expired - Lifetime
-
1986
- 1986-10-13 ES ES86201765T patent/ES2018158B3/es not_active Expired - Lifetime
- 1986-10-13 DE DE8686201765T patent/DE3674136D1/de not_active Expired - Lifetime
- 1986-10-13 EP EP86201765A patent/EP0219908B1/en not_active Expired - Lifetime
- 1986-10-15 JP JP61243281A patent/JPH0743834B2/ja not_active Expired - Fee Related
- 1986-10-15 AU AU63917/86A patent/AU584046B2/en not_active Ceased
- 1986-10-15 CA CA000520566A patent/CA1263183A/en not_active Expired
- 1986-10-16 KR KR1019860008682A patent/KR950008949B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR950008949B1 (ko) | 1995-08-09 |
ES2018158B3 (es) | 1991-04-01 |
US4665310A (en) | 1987-05-12 |
JPH0743834B2 (ja) | 1995-05-15 |
AU584046B2 (en) | 1989-05-11 |
NL8502835A (nl) | 1987-05-18 |
JPS6297141A (ja) | 1987-05-06 |
AU6391786A (en) | 1987-04-30 |
CA1263183A (en) | 1989-11-21 |
EP0219908A1 (en) | 1987-04-29 |
DE3674136D1 (de) | 1990-10-18 |
EP0219908B1 (en) | 1990-09-12 |
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