NL7711218A - Inrichting voor uitlezing van op een registratie- drager geregistreerde signalen. - Google Patents
Inrichting voor uitlezing van op een registratie- drager geregistreerde signalen.Info
- Publication number
- NL7711218A NL7711218A NL7711218A NL7711218A NL7711218A NL 7711218 A NL7711218 A NL 7711218A NL 7711218 A NL7711218 A NL 7711218A NL 7711218 A NL7711218 A NL 7711218A NL 7711218 A NL7711218 A NL 7711218A
- Authority
- NL
- Netherlands
- Prior art keywords
- hologram
- record medium
- photodetector
- modulated
- recorded
- Prior art date
Links
- 230000001427 coherent effect Effects 0.000 abstract 3
- 230000003287 optical effect Effects 0.000 abstract 3
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical 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
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
-
- 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
- G11B7/1372—Lenses
- G11B7/1374—Objective 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
- G11B7/08—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
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
- G11B2007/0924—Skewed beams methods (using an angled beam, i.e. a beam which is reflected from the disc at an angle different from 90°)
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Holo Graphy (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51124120A JPS6047653B2 (ja) | 1976-10-15 | 1976-10-15 | 光学的信号再生装置 |
| JP12412076 | 1976-10-15 | ||
| JP12411976 | 1976-10-15 | ||
| JP12411976A JPS5348703A (en) | 1976-10-15 | 1976-10-15 | Optical signal regenerator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL7711218A true NL7711218A (nl) | 1978-04-18 |
| NL192229B NL192229B (nl) | 1996-11-01 |
| NL192229C NL192229C (nl) | 1997-03-04 |
Family
ID=26460859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7711218A NL192229C (nl) | 1976-10-15 | 1977-10-12 | Inrichting voor het uitlezen van op een registratiedrager geregistreerde signalen. |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4253723A (nl) |
| AT (1) | AT370273B (nl) |
| AU (1) | AU511495B2 (nl) |
| CA (1) | CA1091966A (nl) |
| DE (1) | DE2746334C2 (nl) |
| FR (1) | FR2368190A1 (nl) |
| GB (1) | GB1577877A (nl) |
| NL (1) | NL192229C (nl) |
Families Citing this family (56)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7805069A (nl) * | 1978-05-11 | 1979-11-13 | Philips Nv | Inrichting voor puntsgewijze aftasting van een infor- matievlak. |
| JPS5548674A (en) * | 1978-10-05 | 1980-04-07 | Fuji Photo Film Co Ltd | Reading device for radiation picture information |
| US4264986A (en) * | 1979-03-12 | 1981-04-28 | Willis Craig I | Information-recording process & apparatus |
| AU535350B2 (en) * | 1979-05-07 | 1984-03-15 | Sony Corporation | Inline hologram lens |
| JPS5647933A (en) * | 1979-09-25 | 1981-04-30 | Sony Corp | Optical signal head |
| US4682841A (en) * | 1981-06-15 | 1987-07-28 | Afian Viktor V | Light radiation concentrator and method of making the same |
| JPS5880139A (ja) * | 1981-11-04 | 1983-05-14 | Sony Corp | 光学ヘツド |
| USRE32735E (en) * | 1982-04-15 | 1988-08-23 | Holographix Inc. | Line scan reader/writer by holographic collection |
| US4488042A (en) * | 1982-04-15 | 1984-12-11 | Honeywell Inc. | Line scan reader/writer by holographic collection |
| JPS58194149A (ja) * | 1982-05-08 | 1983-11-12 | Asahi Optical Co Ltd | 光学的記録担体からの情報読取り装置 |
| US4747090A (en) * | 1982-10-14 | 1988-05-24 | Omron Tateisi Electronics Co. | Integral pickup for an optical digital disc using saw deflection and lenses |
| JPS59119548A (ja) * | 1982-12-25 | 1984-07-10 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
| JPH0627907B2 (ja) * | 1983-02-16 | 1994-04-13 | 株式会社日立製作所 | 光学的情報処理装置 |
| US4497534A (en) * | 1983-02-28 | 1985-02-05 | International Business Machines Corporation | Holographic optical head |
| EP0147620B1 (en) * | 1983-11-22 | 1991-06-05 | Kabushiki Kaisha Toshiba | Optical head |
| US4720158A (en) * | 1983-12-07 | 1988-01-19 | Canon Kabushiki Kaisha | Method of and apparatus for making a hologram |
| US4623784A (en) * | 1984-12-20 | 1986-11-18 | Drexler Technology Corporation | Laser recording apparatus with off-center lens and error detection |
| CA1258906A (en) * | 1985-04-22 | 1989-08-29 | Hiroshi Oinoue | Semiconductor laser apparatus for optical head |
| US4687282A (en) * | 1985-04-25 | 1987-08-18 | Ncr Corporation | Method and apparatus for making and utilizing a holographic bifocal lens element |
| JPH0660811B2 (ja) * | 1985-09-24 | 1994-08-10 | ソニー株式会社 | 反射型傾き検出素子 |
| US4731772A (en) * | 1986-05-06 | 1988-03-15 | Lee Wai Hon | Optical head using hologram lens for both beam splitting and focus error detection functions |
| 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 |
| JPH0619845B2 (ja) * | 1986-09-26 | 1994-03-16 | ティアツク株式会社 | デイスク変動状態検出装置 |
| US4905216A (en) * | 1986-12-04 | 1990-02-27 | Pencom International Corporation | Method for constructing an optical head by varying a hologram pattern |
| JPS63191422U (nl) * | 1987-05-26 | 1988-12-09 | ||
| US4776652A (en) * | 1987-10-01 | 1988-10-11 | Camber Corporation | Optical head having two holographic optical elements, with one element inclined relative to the other |
| US4826269A (en) * | 1987-10-16 | 1989-05-02 | Spectra Diode Laboratories, Inc. | Diode laser arrangement forming bright image |
| US5161233A (en) * | 1988-05-17 | 1992-11-03 | Dai Nippon Printing Co., Ltd. | Method for recording and reproducing information, apparatus therefor and recording medium |
| US5172366A (en) * | 1988-09-19 | 1992-12-15 | Pioneer Electronic Corporation | Optical information reproducing apparatus with selective photodetector output |
| FR2642530A1 (fr) * | 1989-01-30 | 1990-08-03 | Seiko Epson Corp | Mecanisme de focalisation et tete optique |
| US5596986A (en) * | 1989-03-17 | 1997-01-28 | Scico, Inc. | Blood oximeter |
| US5278816A (en) * | 1989-09-22 | 1994-01-11 | Russell James T | Recording/reproducing system using wavelength/depth selective optical storage medium |
| US4998011A (en) * | 1989-11-17 | 1991-03-05 | Applied Magnetics Corporation | Flat plate focus sensing apparatus |
| US5121371A (en) * | 1990-06-18 | 1992-06-09 | Bernoulli Optical Systems Company | Optical servo system for magnetic disk |
| US5563868A (en) * | 1990-06-18 | 1996-10-08 | Matsushita-Kotobuki Electronics Industries, Ltd. | Optical servo system for magnetic disk |
| GB2248989B (en) * | 1990-10-15 | 1995-05-24 | Applied Magnetics Corp | Focus sensing apparatus and method |
| US5245174A (en) * | 1990-10-15 | 1993-09-14 | Applied Magnetics Corporation | Focus sensing apparatus utilizing a reflecting surface having variable reflectivity |
| US5748598A (en) * | 1995-12-22 | 1998-05-05 | Massachusetts Institute Of Technology | Apparatus and methods for reading multilayer storage media using short coherence length sources |
| US5331622A (en) * | 1991-05-28 | 1994-07-19 | Applied Magnetics Corporation | Compact optical head |
| US5646778A (en) * | 1991-05-28 | 1997-07-08 | Discovision Associates | Optical beamsplitter |
| TW218427B (nl) * | 1991-06-04 | 1994-01-01 | Ibm | |
| KR950005033B1 (ko) * | 1992-11-06 | 1995-05-17 | 주식회사금성사 | 광픽업 장치 |
| US5412195A (en) * | 1992-12-29 | 1995-05-02 | Hughes Aircraft Company | High security spectral code strip |
| US5757763A (en) * | 1994-07-12 | 1998-05-26 | Massachusetts Institute Of Technology | Optical information storage via amplitude modulation |
| JP2806293B2 (ja) * | 1994-10-06 | 1998-09-30 | 松下電器産業株式会社 | 光ピックアップ及びその製造方法 |
| US5789733A (en) * | 1996-09-20 | 1998-08-04 | Motorola, Inc. | Smart card with contactless optical interface |
| DE50003483D1 (de) * | 1999-09-06 | 2003-10-02 | Innotec Europ Gmbh | Verformungsaufnehmer |
| CN1695184A (zh) * | 2002-11-27 | 2005-11-09 | 诺基亚公司 | 光存储器的读/写设备及读/写方法 |
| JPWO2009057210A1 (ja) * | 2007-10-31 | 2011-03-10 | 富士通株式会社 | ホログラム記録装置 |
| US10187634B2 (en) | 2016-08-12 | 2019-01-22 | Avegant Corp. | Near-eye display system including a modulation stack |
| US10057488B2 (en) * | 2016-08-12 | 2018-08-21 | Avegant Corp. | Image capture with digital light path length modulation |
| US10516879B2 (en) | 2016-08-12 | 2019-12-24 | Avegant Corp. | Binocular display with digital light path length modulation |
| US10401639B2 (en) | 2016-08-12 | 2019-09-03 | Avegant Corp. | Method and apparatus for an optical path length extender |
| US10809546B2 (en) | 2016-08-12 | 2020-10-20 | Avegant Corp. | Digital light path length modulation |
| US10379388B2 (en) | 2016-08-12 | 2019-08-13 | Avegant Corp. | Digital light path length modulation systems |
| US10185153B2 (en) | 2016-08-12 | 2019-01-22 | Avegant Corp. | Orthogonal optical path length extender |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3658403A (en) * | 1968-06-20 | 1972-04-25 | Rca Corp | High fidelity readout of a hologram performing the function of a complex wave modifying structure |
| US3614189A (en) * | 1970-04-23 | 1971-10-19 | Rca Corp | Holographic memory with illumination hologram providing reference and object beams |
| FR2122007A5 (nl) * | 1971-01-14 | 1972-08-25 | Thomson Csf | |
| US3795768A (en) * | 1971-12-15 | 1974-03-05 | Communications Satellite Corp | Holographic image scanner/recorder system |
| US3833893A (en) * | 1972-10-24 | 1974-09-03 | Rca Corp | Holographic memory including corner reflectors |
| US3909608A (en) * | 1972-12-26 | 1975-09-30 | Thomson Csf | Reproducing device for the optical reading out of a record carrying an embossed print |
| FR2266932B1 (nl) * | 1973-03-02 | 1977-09-02 | Thomson Brandt | |
| AR200934A1 (es) * | 1974-07-15 | 1974-12-27 | Statex Sa | Mejoras en los dispositivos para la copia de imagenes mediante barrido secuencial |
| US3953105A (en) * | 1974-10-16 | 1976-04-27 | Epsco, Incorporated | Holographic scanner utilizing auxiliary reflective surface |
| NL181693C (nl) * | 1974-11-29 | 1987-10-01 | Philips Nv | Inrichting voor het langs optische weg uitlezen van een stralingsreflekterende registratiedrager. |
| JPS5820406B2 (ja) * | 1975-06-10 | 1983-04-22 | 富士通株式会社 | ヒカリソウサソウチ |
| NL7600843A (nl) * | 1976-01-28 | 1977-08-01 | Philips Nv | Inrichting voor het uitlezen van een registratie- drager waarop informatie, bijvoorbeeld en/of ge- luidsinformatie, is aangebracht. |
| US4113343A (en) * | 1977-05-18 | 1978-09-12 | International Business Machines Corporation | Holographic opaque document scanner |
-
1977
- 1977-09-22 CA CA287,313A patent/CA1091966A/en not_active Expired
- 1977-10-11 AU AU29578/77A patent/AU511495B2/en not_active Expired
- 1977-10-11 US US05/841,210 patent/US4253723A/en not_active Expired - Lifetime
- 1977-10-12 NL NL7711218A patent/NL192229C/nl not_active IP Right Cessation
- 1977-10-12 GB GB42494/77A patent/GB1577877A/en not_active Expired
- 1977-10-14 DE DE2746334A patent/DE2746334C2/de not_active Expired
- 1977-10-14 AT AT0735277A patent/AT370273B/de active
- 1977-10-17 FR FR7731231A patent/FR2368190A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AU2957877A (en) | 1979-04-26 |
| ATA735277A (de) | 1982-07-15 |
| DE2746334A1 (de) | 1978-04-27 |
| GB1577877A (en) | 1980-10-29 |
| AU511495B2 (en) | 1980-08-21 |
| NL192229B (nl) | 1996-11-01 |
| NL192229C (nl) | 1997-03-04 |
| DE2746334C2 (de) | 1984-04-05 |
| AT370273B (de) | 1983-03-10 |
| FR2368190A1 (fr) | 1978-05-12 |
| FR2368190B1 (nl) | 1982-11-19 |
| US4253723A (en) | 1981-03-03 |
| CA1091966A (en) | 1980-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NL7711218A (nl) | Inrichting voor uitlezing van op een registratie- drager geregistreerde signalen. | |
| US4730293A (en) | Dual beam optical data system | |
| US4598393A (en) | Three-beam optical servo tracking system with two-track parallel readout | |
| US4771413A (en) | Optical recording and reproducing apparatus | |
| CN100498940C (zh) | 全息图记录载体及其记录再现方法和装置 | |
| SE8202411L (sv) | Apparat for uppteckning och avlesning av informationsspar i en optisk uppteckningsberare | |
| SE8405523D0 (sv) | Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande informationsstruktur | |
| SE7902223L (sv) | Uppteckningsberarkropp och uppteckningsberare for optisk information samt anordning for inskrivning och avlesning | |
| KR950034115A (ko) | 광 픽업 | |
| EP0326354A3 (en) | Apparatus for reading information out of an optical recording medium | |
| EP1061508A3 (en) | Optical pickup device capable of detecting a stable error signal | |
| MY104267A (en) | Optical pick-up devices | |
| ES434685A1 (es) | Un aparato para leer un portador de registro en el que esta almacenada informacion en una estructura opticamente legibleen forma de pista. | |
| EP0776002A3 (en) | Integrated optical pickup system capable of reading optical disks of different thicknesses | |
| KR920003271A (ko) | 광디스크재생방법 및 광검출기 | |
| JPS6260731B2 (nl) | ||
| KR950034116A (ko) | 광 픽업 | |
| FR2311326A2 (fr) | Dispositif de focalisation et lecteur optique comportant un tel dispositif | |
| JPS6113289B2 (nl) | ||
| JPS60187934A (ja) | 光学的記録媒体の再生方式 | |
| JPS5764336A (en) | Track signal recording system of optical disk device | |
| JPS6132735B2 (nl) | ||
| JPS62239345A (ja) | 光学的情報記録媒体 | |
| JPS62239344A (ja) | 光学的情報記録媒体 | |
| JPS57191848A (en) | Optical disk recording and reproducing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BC | A request for examination has been filed | ||
| A85 | Still pending on 85-01-01 | ||
| V4 | Discontinued because of reaching the maximum lifetime of a patent |
Free format text: 971012 |