DE3772426D1 - Optische leseeinrichtung fuer optische aufnahmetraeger. - Google Patents
Optische leseeinrichtung fuer optische aufnahmetraeger.Info
- Publication number
- DE3772426D1 DE3772426D1 DE8787400773T DE3772426T DE3772426D1 DE 3772426 D1 DE3772426 D1 DE 3772426D1 DE 8787400773 T DE8787400773 T DE 8787400773T DE 3772426 T DE3772426 T DE 3772426T DE 3772426 D1 DE3772426 D1 DE 3772426D1
- Authority
- DE
- Germany
- Prior art keywords
- optical
- polarization
- refraction index
- reading device
- receiver
- 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 - Lifetime
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
- G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1833—Diffraction gratings comprising birefringent materials
-
- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- 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
- G11B7/0909—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 by astigmatic 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
- G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
-
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Communication System (AREA)
- Holo Graphy (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Laser Beam Printer (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Facsimile Scanning Arrangements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8605239A FR2597249B1 (fr) | 1986-04-11 | 1986-04-11 | Dispositif de lecture optique de support d'enregistrement optique |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3772426D1 true DE3772426D1 (de) | 1991-10-02 |
Family
ID=9334165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787400773T Expired - Lifetime DE3772426D1 (de) | 1986-04-11 | 1987-04-07 | Optische leseeinrichtung fuer optische aufnahmetraeger. |
Country Status (11)
Country | Link |
---|---|
US (1) | US5168485A (de) |
EP (1) | EP0241372B1 (de) |
JP (3) | JP2589337B2 (de) |
KR (1) | KR100235125B1 (de) |
AT (1) | ATE66762T1 (de) |
AU (1) | AU7167587A (de) |
CA (1) | CA1301319C (de) |
DE (1) | DE3772426D1 (de) |
ES (1) | ES2024528B3 (de) |
FR (1) | FR2597249B1 (de) |
WO (1) | WO1987006386A1 (de) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8502835A (nl) * | 1985-10-17 | 1987-05-18 | Philips Nv | Inrichting voor het met optische straling aftasten van een informatievlak. |
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 |
KR930005785B1 (ko) * | 1988-06-23 | 1993-06-24 | 샤프 가부시끼가이샤 | 광학 픽업장치 |
EP0390445A3 (de) * | 1989-03-27 | 1992-01-22 | Matsushita Electric Industrial Co., Ltd. | Optischer Abtastkopf |
US5085496A (en) * | 1989-03-31 | 1992-02-04 | Sharp Kabushiki Kaisha | Optical element and optical pickup device comprising it |
FR2646245B1 (fr) * | 1989-04-25 | 1991-06-14 | Thomson Csf | Dispositif de lecture optique pour support d'enregistrement optique |
US5050153A (en) * | 1989-06-06 | 1991-09-17 | Wai-Hon Lee | Semiconductor laser optical head assembly |
DE69031366T2 (de) * | 1989-06-26 | 1998-04-09 | Nec Corp | Optisches System |
JP2616018B2 (ja) * | 1989-06-26 | 1997-06-04 | 日本電気株式会社 | 光ヘッド装置 |
EP0459790B1 (de) * | 1990-05-31 | 1996-04-17 | Mitsubishi Denki Kabushiki Kaisha | Optisches Aufzeichnungs- und Wiedergabegerät |
JP2894808B2 (ja) * | 1990-07-09 | 1999-05-24 | 旭光学工業株式会社 | 偏光を有する光学系 |
DE69326213T2 (de) * | 1992-11-17 | 1999-12-30 | Seiko Epson Corp | Optischer Abtastkopf |
JP3362896B2 (ja) * | 1993-01-25 | 2003-01-07 | ソニー株式会社 | 光ピックアップ及び光ディスク装置 |
US5757754A (en) * | 1994-06-30 | 1998-05-26 | Matsushita Electric Industrial Co., Ltd. | Holographic optical head |
FR2723243B1 (fr) * | 1994-07-26 | 1996-09-06 | Thomson Csf | Dispositif d'enregistrement et/ou de lecture de tetes magnetiques et son procede de realisation |
US6026065A (en) * | 1995-03-04 | 2000-02-15 | Lg Electronics Inc. | Optical pick-up apparatus capable of reading data irrespective of disc type |
WO1997013245A1 (en) | 1995-10-03 | 1997-04-10 | Asahi Glass Company Ltd. | Optical head device and production method thereof |
WO1999018459A1 (fr) * | 1997-10-02 | 1999-04-15 | Asahi Glass Company Ltd. | Tete optique et element de diffraction conçu pour cette tete optique, et procede de fabrication de l'element de diffraction et de la tete optique |
FR2786345B1 (fr) | 1998-11-24 | 2001-02-09 | Thomson Csf | Dispositif de cryptage quantique |
US6584059B1 (en) | 1999-02-17 | 2003-06-24 | Matsushita Electric Industrial Co., Ltd. | Information recording and reproducing apparatus |
US7149173B2 (en) * | 2000-10-17 | 2006-12-12 | Thales | Medium for recording optically readable data, method for making same and optical system reproducing said data |
JP2002250809A (ja) * | 2001-02-26 | 2002-09-06 | Alps Electric Co Ltd | 光学部材およびそれを用いた光ピックアップ |
FR2824905B1 (fr) * | 2001-05-15 | 2003-08-29 | Thomson Csf | Gyrometre a fibre optique |
FR2837972B1 (fr) | 2002-04-02 | 2006-07-21 | Thales Sa | Procede d'asservissement radial pour un dispositif de reproduction d'informations d'un disque optique et dispositif de reproduction mettant en oeuvre ce procede |
JP4106981B2 (ja) * | 2002-06-28 | 2008-06-25 | 旭硝子株式会社 | 光減衰器 |
EP1616326A2 (de) * | 2003-04-14 | 2006-01-18 | Koninklijke Philips Electronics N.V. | Optische abtastvorrichtung |
US9938844B2 (en) | 2011-10-26 | 2018-04-10 | General Electric Company | Metallic stator seal |
US10161523B2 (en) | 2011-12-23 | 2018-12-25 | General Electric Company | Enhanced cloth seal |
US9551569B2 (en) * | 2014-10-13 | 2017-01-24 | Hermes-Epitek Corporation | Apparatus and method for curvature and thin film stress measurement |
US11269193B2 (en) * | 2017-11-27 | 2022-03-08 | Liqxtal Technology Inc. | Optical sensing device and structured light projector |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51100628A (de) * | 1975-03-03 | 1976-09-06 | Hitachi Ltd | |
NL7907216A (nl) * | 1979-09-28 | 1981-03-31 | Philips Nv | Optisch fokusfout-detektiestelsel. |
JPS6213Y2 (de) * | 1981-03-20 | 1987-01-06 | ||
JPS58130148A (ja) * | 1982-01-28 | 1983-08-03 | 三重県 | 額縁等の立体的装飾成形体用成形材料ならびにそれを用いた成形方法 |
JPS59119548A (ja) * | 1982-12-25 | 1984-07-10 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
JP2539350B2 (ja) * | 1983-12-16 | 1996-10-02 | 株式会社日立製作所 | 光ヘツド装置 |
JPH069089B2 (ja) * | 1985-04-05 | 1994-02-02 | 日本電気株式会社 | 光ヘツド |
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 |
JPS61178740A (ja) * | 1985-02-05 | 1986-08-11 | Canon Inc | 光ヘツド装置 |
CA1257392A (en) * | 1985-03-20 | 1989-07-11 | Masayuki Kato | Optical pickup with hologram lenses |
JPS6226654A (ja) * | 1985-07-26 | 1987-02-04 | Nec Corp | 光ヘツド |
NL8502835A (nl) * | 1985-10-17 | 1987-05-18 | Philips Nv | Inrichting voor het met optische straling aftasten van een informatievlak. |
JPS62139146A (ja) * | 1985-12-12 | 1987-06-22 | Nec Corp | 光ヘツド装置 |
EP0228620B1 (de) * | 1985-12-10 | 1991-06-05 | Nec Corporation | Optischer Kopf mit einem Beugungsgitter zum Richten von zwei oder mehreren gebeugten Lichtstrahlen auf optische Detektoren |
JPH0630164B2 (ja) * | 1985-12-16 | 1994-04-20 | キヤノン株式会社 | 光ヘツド装置 |
NL8601974A (nl) * | 1986-08-01 | 1988-03-01 | Philips Nv | Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak. |
JPH0514334Y2 (de) * | 1986-10-01 | 1993-04-16 | ||
JPH0777038B2 (ja) * | 1986-12-25 | 1995-08-16 | ソニー株式会社 | 光学ピツクアツプ装置 |
-
1986
- 1986-04-11 FR FR8605239A patent/FR2597249B1/fr not_active Expired
-
1987
- 1987-03-31 WO PCT/FR1987/000102 patent/WO1987006386A1/fr active Application Filing
- 1987-03-31 JP JP62502219A patent/JP2589337B2/ja not_active Expired - Lifetime
- 1987-03-31 AU AU71675/87A patent/AU7167587A/en not_active Abandoned
- 1987-03-31 KR KR1019870701164A patent/KR100235125B1/ko not_active IP Right Cessation
- 1987-04-07 DE DE8787400773T patent/DE3772426D1/de not_active Expired - Lifetime
- 1987-04-07 AT AT87400773T patent/ATE66762T1/de active
- 1987-04-07 EP EP87400773A patent/EP0241372B1/de not_active Expired - Lifetime
- 1987-04-07 ES ES87400773T patent/ES2024528B3/es not_active Expired - Lifetime
- 1987-04-09 CA CA000534212A patent/CA1301319C/fr not_active Expired - Lifetime
-
1991
- 1991-07-17 US US07/731,428 patent/US5168485A/en not_active Expired - Lifetime
-
1996
- 1996-07-08 JP JP8178194A patent/JP2935418B2/ja not_active Expired - Lifetime
-
1998
- 1998-01-08 JP JP10002532A patent/JPH10188336A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US5168485A (en) | 1992-12-01 |
FR2597249B1 (fr) | 1988-06-17 |
FR2597249A1 (fr) | 1987-10-16 |
JPS63503102A (ja) | 1988-11-10 |
ES2024528B3 (es) | 1992-03-01 |
ATE66762T1 (de) | 1991-09-15 |
EP0241372B1 (de) | 1991-08-28 |
KR880701438A (ko) | 1988-07-27 |
EP0241372A1 (de) | 1987-10-14 |
KR100235125B1 (ko) | 1999-12-15 |
JP2935418B2 (ja) | 1999-08-16 |
CA1301319C (fr) | 1992-05-19 |
AU7167587A (en) | 1987-11-09 |
JPH0922541A (ja) | 1997-01-21 |
JP2589337B2 (ja) | 1997-03-12 |
JPH10188336A (ja) | 1998-07-21 |
WO1987006386A1 (fr) | 1987-10-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |