ES8308128A1 - Un aparato para leer un portador de registro que tiene una estructura de informacion dispuesta por pistas, opticamente legible. - Google Patents
Un aparato para leer un portador de registro que tiene una estructura de informacion dispuesta por pistas, opticamente legible.Info
- Publication number
- ES8308128A1 ES8308128A1 ES516962A ES516962A ES8308128A1 ES 8308128 A1 ES8308128 A1 ES 8308128A1 ES 516962 A ES516962 A ES 516962A ES 516962 A ES516962 A ES 516962A ES 8308128 A1 ES8308128 A1 ES 8308128A1
- Authority
- ES
- Spain
- Prior art keywords
- information structure
- reading
- record carrier
- readable information
- optically readable
- 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
Links
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
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
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
-
- 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)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
LECTOR OPTICO DE SOPORTE DE REGISTRO EN PISTAS. COMPRENDE UNA FUENTE DE RADIACION (3), UN SISTEMA DE OBJETIVO (5) PARA ENFOCAR UN HAZ EMITIDO POR LA FUENTE DE RADIACION PARA FORMAR UN PUNTO DE RADIACION REDONDO SOBRE LA ESTRUCTURA DE INFORMACION (1), Y UN SISTEMA DE DETECCION (8) SENSIBLE A LA RADIACION. CON EL FIN DE REDUCIR LA DIAFONIA QUE PUEDE PRODUCIRSE EN CASO DE OBLICUIDAD DEL SOPORTE DE REGISTRO (1) CON RELACION AL HAZ, ESTA DISPUESTO UN ELEMENTO ATENUADOR EN LA TRAYECTORIA DE LA RADIACION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8104946A NL8104946A (nl) | 1981-11-02 | 1981-11-02 | Inrichting voor het uitlezen en/of inschrijven van een optisch uitleesbare informatiestructuur op een registratiedrager. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES516962A0 ES516962A0 (es) | 1983-07-01 |
ES8308128A1 true ES8308128A1 (es) | 1983-07-01 |
Family
ID=19838303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES516962A Expired ES8308128A1 (es) | 1981-11-02 | 1982-10-29 | Un aparato para leer un portador de registro que tiene una estructura de informacion dispuesta por pistas, opticamente legible. |
Country Status (10)
Country | Link |
---|---|
US (1) | US4460990A (es) |
EP (1) | EP0078580B1 (es) |
JP (1) | JPS5885944A (es) |
AT (1) | AT374944B (es) |
AU (1) | AU9001382A (es) |
CA (1) | CA1188800A (es) |
DE (1) | DE3270152D1 (es) |
ES (1) | ES8308128A1 (es) |
NL (1) | NL8104946A (es) |
SG (1) | SG76286G (es) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6124033A (ja) * | 1984-07-13 | 1986-02-01 | Sony Corp | 光学式ヘツドのトラツキング誤差検出装置 |
JPS6257135A (ja) * | 1985-09-05 | 1987-03-12 | Pioneer Electronic Corp | 光学式情報記録再生装置におけるピツクアツプ装置 |
US4835761A (en) * | 1985-11-20 | 1989-05-30 | Mitsubishi Denki Kabushiki Kaisha | Signal to noise ratio of optical head apparatus employing semiconductor laser beam source |
JP2502959Y2 (ja) * | 1986-02-28 | 1996-06-26 | 株式会社日立製作所 | 光学式情報読取装置 |
NL8801327A (nl) * | 1988-05-24 | 1989-12-18 | Philips Nv | Methode voor het optisch aftasten van een informatievlak en optische registratiedragers en aftastinrichtingen geschikt voor toepassing van de methode. |
JP2621375B2 (ja) * | 1988-06-29 | 1997-06-18 | 日本電気株式会社 | 光ヘッド装置 |
EP0346844B1 (en) * | 1988-06-14 | 1995-09-20 | Nec Corporation | Optical head apparatus |
US5247510A (en) * | 1990-06-29 | 1993-09-21 | Digital Equipment Corporation | Increasing storage density of optical data media by detecting a selected portion of a light spot image corresponding to a single domain |
JPH04281231A (ja) * | 1990-11-30 | 1992-10-06 | Toshiba Corp | 光集束光学系 |
US5231624A (en) * | 1991-08-01 | 1993-07-27 | Tandy Corporation | System and method using a reduce profile light beam for high density recording on optical media |
US5754512A (en) * | 1995-05-30 | 1998-05-19 | Matsushita Electric Industrial Co., Ltd. | Correction elements to lower light intensity around an optical axis of an optical head with a plurality of focal points |
US5621717A (en) * | 1995-06-07 | 1997-04-15 | International Business Machines Corporation | Reading optical disks having substrates with diverse axial thicknesses |
KR100200868B1 (ko) * | 1995-12-22 | 1999-06-15 | 윤종용 | 광픽업 장치 |
KR100200873B1 (ko) * | 1996-01-11 | 1999-06-15 | 윤종용 | 광 픽업 장치 |
JPH09320136A (ja) * | 1996-03-26 | 1997-12-12 | Sanyo Electric Co Ltd | 情報記録再生装置 |
KR0176595B1 (ko) * | 1996-04-30 | 1999-04-15 | 김광호 | 대물렌즈장치 및 이 대물렌즈장치를 채용한 광픽업장치 |
CN101775582B (zh) * | 2010-02-05 | 2012-09-05 | 安徽华东光电技术研究所 | 一种控制衰减器膜厚的方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB587493A (en) * | 1943-10-14 | 1947-04-28 | Philco Radio & Television Corp | Improvements in and relating to optical systems suitable for photography |
FR1517701A (fr) * | 1966-03-28 | 1968-03-22 | Centre Nat Rech Scient | Perfectionnements aux instruments optiques pour la projection et la reproduction agrandie ou réduite ainsi que pour l'observation usuelle |
US3843235A (en) * | 1968-09-14 | 1974-10-22 | Minolta Camera Kk | Image forming optical system wherein defocus images are improved |
FR2205678B1 (es) * | 1972-11-08 | 1975-09-12 | Marie G R P | |
US3856378A (en) * | 1973-02-28 | 1974-12-24 | Westinghouse Electric Corp | Method and means for modulating light propagating in an optical waveguide by bulk acoustic waves |
FR2266932B1 (es) * | 1973-03-02 | 1977-09-02 | Thomson Brandt | |
JPS598804B2 (ja) * | 1973-12-19 | 1984-02-27 | キヤノン株式会社 | 線像形成装置 |
JPS5264215A (en) * | 1975-11-21 | 1977-05-27 | Pioneer Electronic Corp | Optical signal reader |
JPS5276944A (en) * | 1975-12-23 | 1977-06-28 | Canon Inc | Optical filter |
FR2359476A1 (fr) * | 1976-07-23 | 1978-02-17 | Thomson Csf | Procede de lecture optique d'un support d'information et lecteur optique mettant en oeuvre un tel procede de lecture |
GB1581551A (en) * | 1976-08-24 | 1980-12-17 | Atomic Energy Authority Uk | Image reproduction systems |
US4179708A (en) * | 1978-02-27 | 1979-12-18 | Rca Corporation | Optical playback system having increased depth-of-field |
JPS5589924A (en) * | 1978-12-27 | 1980-07-08 | Toshiba Corp | Optical information reproduction unit |
US4375096A (en) * | 1981-03-10 | 1983-02-22 | Rca Corporation | Multi-bandwidth optical playback apparatus with elongated read spot |
-
1981
- 1981-11-02 NL NL8104946A patent/NL8104946A/nl not_active Application Discontinuation
-
1982
- 1982-01-18 US US06/339,934 patent/US4460990A/en not_active Expired - Lifetime
- 1982-10-28 CA CA000414417A patent/CA1188800A/en not_active Expired
- 1982-10-29 DE DE8282201360T patent/DE3270152D1/de not_active Expired
- 1982-10-29 EP EP82201360A patent/EP0078580B1/en not_active Expired
- 1982-10-29 ES ES516962A patent/ES8308128A1/es not_active Expired
- 1982-10-29 AU AU90013/82A patent/AU9001382A/en not_active Abandoned
- 1982-11-02 AT AT0399582A patent/AT374944B/de not_active IP Right Cessation
- 1982-11-02 JP JP57193267A patent/JPS5885944A/ja active Pending
-
1986
- 1986-09-20 SG SG762/86A patent/SG76286G/en unknown
Also Published As
Publication number | Publication date |
---|---|
ATA399582A (de) | 1983-10-15 |
CA1188800A (en) | 1985-06-11 |
EP0078580A1 (en) | 1983-05-11 |
US4460990A (en) | 1984-07-17 |
NL8104946A (nl) | 1983-06-01 |
AU9001382A (en) | 1983-05-12 |
ES516962A0 (es) | 1983-07-01 |
SG76286G (en) | 1987-02-27 |
DE3270152D1 (en) | 1986-04-30 |
AT374944B (de) | 1984-06-12 |
EP0078580B1 (en) | 1986-03-26 |
JPS5885944A (ja) | 1983-05-23 |
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