NL7809635A - Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur. - Google Patents
Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur. Download PDFInfo
- Publication number
- NL7809635A NL7809635A NL7809635A NL7809635A NL7809635A NL 7809635 A NL7809635 A NL 7809635A NL 7809635 A NL7809635 A NL 7809635A NL 7809635 A NL7809635 A NL 7809635A NL 7809635 A NL7809635 A NL 7809635A
- Authority
- NL
- Netherlands
- Prior art keywords
- focus
- radiation
- read
- plane
- objective system
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims description 25
- 230000005855 radiation Effects 0.000 claims description 42
- 230000010287 polarization Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 6
- 210000001747 pupil Anatomy 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 2
- 230000005693 optoelectronics Effects 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims 1
- 230000001066 destructive effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 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
-
- 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
- G11B7/0917—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
- G11B7/08—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°)
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Automatic Focus Adjustment (AREA)
- Facsimile Scanning Arrangements (AREA)
Priority Applications (17)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7809635A NL7809635A (nl) | 1978-09-22 | 1978-09-22 | Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur. |
| US05/968,644 US4253019A (en) | 1978-09-22 | 1978-12-11 | Apparatus for reading an optical record carrier having a radiation-reflecting information structure |
| ZA00794547A ZA794547B (en) | 1978-09-22 | 1979-08-28 | Apparatus for reading an optical record carrier having a radiation-reflecting information structure |
| AR277977A AR223848A1 (es) | 1978-09-22 | 1979-09-06 | Aparato lector de un portador de grabacion optica que tiene una estructura de informacion reflectora de radiacion |
| CA335,578A CA1123640A (en) | 1978-09-22 | 1979-09-13 | Apparatus for reading an optical record carrier having a radiation-reflecting information structure |
| DE19792937427 DE2937427A1 (de) | 1978-09-22 | 1979-09-15 | Vorrichtung zum auslesen eines optischen aufzeichnungstraegers mit einer strahlungsreflektierenden informationsstruktur |
| AU50936/79A AU530291B2 (en) | 1978-09-22 | 1979-09-18 | Reading an optical record carrier |
| IT68838/79A IT1165709B (it) | 1978-09-22 | 1979-09-19 | Dispositivo per la lettura di un supporto di registrazione ottica avente una struttura d'informazione atta a riflettere radiazioni |
| BR7905978A BR7905978A (pt) | 1978-09-22 | 1979-09-19 | Aparelho para ler um elemento portador otico gravado com uma estrutura refletora de radiacoes contendo informacoes arranjadas em uma trilha |
| DK391279A DK391279A (da) | 1978-09-22 | 1979-09-19 | Apparat til aflaesning af en optisk registreringsbaerer med straalingsreflekterende informationsstryktur |
| GB7932504A GB2033187B (en) | 1978-09-22 | 1979-09-19 | Apparatus for reading a reflecting optical record carrier |
| SE7907748A SE437579B (sv) | 1978-09-22 | 1979-09-19 | Apparat for avlesning av en optisk uppteckningsberare med en stralningsreflekterande informationsstruktur |
| JP11947079A JPS5545200A (en) | 1978-09-22 | 1979-09-19 | Reading device for optical recording carrier |
| DD79215678A DD146118A5 (de) | 1978-09-22 | 1979-09-20 | Vorrichtung zum auslesen eines optischen aufzeichnungstraegers mit einer strahlungsreflektierenden informationsstruktur |
| ES484316A ES484316A1 (es) | 1978-09-22 | 1979-09-20 | Un aparato para leer un portador optico de registro |
| BE0/197241A BE878905A (fr) | 1978-09-22 | 1979-09-20 | Dispositif pour la lecture d'un porteur d'enregistrement optique comportant une structure d'information reflechissant le rayonnement |
| FR7923575A FR2437043B1 (fr) | 1978-09-22 | 1979-09-21 | Dispositif pour la lecture d'un porteur d'enregistrement optique comportant une structure d'information reflechissant le rayonnement |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7809635A NL7809635A (nl) | 1978-09-22 | 1978-09-22 | Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur. |
| NL7809635 | 1978-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7809635A true NL7809635A (nl) | 1980-03-25 |
Family
ID=19831595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7809635A NL7809635A (nl) | 1978-09-22 | 1978-09-22 | Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur. |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US4253019A (xx) |
| JP (1) | JPS5545200A (xx) |
| AR (1) | AR223848A1 (xx) |
| AU (1) | AU530291B2 (xx) |
| BE (1) | BE878905A (xx) |
| BR (1) | BR7905978A (xx) |
| CA (1) | CA1123640A (xx) |
| DD (1) | DD146118A5 (xx) |
| DE (1) | DE2937427A1 (xx) |
| DK (1) | DK391279A (xx) |
| ES (1) | ES484316A1 (xx) |
| FR (1) | FR2437043B1 (xx) |
| GB (1) | GB2033187B (xx) |
| IT (1) | IT1165709B (xx) |
| NL (1) | NL7809635A (xx) |
| SE (1) | SE437579B (xx) |
| ZA (1) | ZA794547B (xx) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153142A (en) * | 1979-05-15 | 1980-11-28 | Olympus Optical Co Ltd | Magnetic recording and reproducing device |
| CA1132258A (en) * | 1980-05-12 | 1982-09-21 | Herman W. Willemsen | Scanning head for an optical disc system |
| US4494226A (en) * | 1981-10-15 | 1985-01-15 | Burroughs Corporation | Three beam optical memory system |
| US4402061A (en) * | 1981-10-15 | 1983-08-30 | Burroughs Corporation | Preformatted optical media for use in an optical memory system |
| US4451914A (en) * | 1982-04-15 | 1984-05-29 | Burroughs Corporation | Optical storage system employing a multi-layer optical medium |
| US4451915A (en) * | 1982-04-15 | 1984-05-29 | Burroughs Corporation | Optical storage system employing a multi-layer optical medium |
| NL8202058A (nl) * | 1982-05-19 | 1983-12-16 | Philips Nv | Opto-elektronisch fokusfout-detektiestelsel. |
| US4674076A (en) * | 1982-05-19 | 1987-06-16 | Burroughs Corporation | Optical memory system having improved positioning and focusing control circuitry |
| US4669074A (en) * | 1982-05-19 | 1987-05-26 | Burroughs Corporation | Focusing control circuitry for an optical memory system |
| GB2122835B (en) * | 1982-06-30 | 1986-08-06 | Eastman Kodak Co | Rangefinder |
| JPS59119548A (ja) * | 1982-12-25 | 1984-07-10 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
| GB2135150A (en) * | 1983-02-15 | 1984-08-22 | Gen Electric | Optical inspection system |
| JPS59162514A (ja) * | 1983-03-08 | 1984-09-13 | Dainippon Screen Mfg Co Ltd | 画像走査記録装置における焦点調整方法 |
| US4891799A (en) * | 1987-03-13 | 1990-01-02 | Fuji Electrochemical Co., Ltd. | Optical head apparatus for writing and reading data on an optical disk having a lens with an inclined optical axis |
| JPH03225650A (ja) * | 1990-01-31 | 1991-10-04 | Sony Corp | 光ディスクシステム |
| 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 |
| US5757763A (en) * | 1994-07-12 | 1998-05-26 | Massachusetts Institute Of Technology | Optical information storage via amplitude modulation |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2222665B1 (xx) * | 1973-03-21 | 1975-10-31 | Thomson Brandt | |
| FR2235448B1 (xx) * | 1973-06-29 | 1976-05-07 | Thomson Brandt | |
| NL7402504A (nl) * | 1974-02-25 | 1975-08-27 | Philips Nv | Inrichting voor het langs optische weg uitlezen van een registratiedrager. |
| FR2306495A1 (fr) * | 1975-04-04 | 1976-10-29 | Thomson Brandt | Systeme de lecture d'un enregistrement par exploration optique ponctuelle d'une piste diffractante |
| NL7506495A (nl) * | 1975-06-02 | 1976-12-06 | Philips Nv | Inrichting voor het uitlezen van een registratie- drager. |
| FR2313716A1 (fr) * | 1975-06-03 | 1976-12-31 | Thomson Brandt | Systeme optique de lecture par reflexion d'un support d'information |
| JPS5332272A (en) * | 1976-09-07 | 1978-03-27 | Komatsu Forklift Kk | Interlock device between oil pressure system brake and mechanical system brake |
| NL7703123A (nl) * | 1977-03-23 | 1978-09-26 | Philips Nv | Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager. |
| NL7706753A (nl) * | 1977-03-23 | 1978-12-22 | Philips Nv | Inrichting voor het uitlezen van een optische stralingsreflekterende informatiedrager. |
-
1978
- 1978-09-22 NL NL7809635A patent/NL7809635A/nl not_active Application Discontinuation
- 1978-12-11 US US05/968,644 patent/US4253019A/en not_active Expired - Lifetime
-
1979
- 1979-08-28 ZA ZA00794547A patent/ZA794547B/xx unknown
- 1979-09-06 AR AR277977A patent/AR223848A1/es active
- 1979-09-13 CA CA335,578A patent/CA1123640A/en not_active Expired
- 1979-09-15 DE DE19792937427 patent/DE2937427A1/de active Granted
- 1979-09-18 AU AU50936/79A patent/AU530291B2/en not_active Ceased
- 1979-09-19 DK DK391279A patent/DK391279A/da unknown
- 1979-09-19 BR BR7905978A patent/BR7905978A/pt unknown
- 1979-09-19 JP JP11947079A patent/JPS5545200A/ja active Granted
- 1979-09-19 GB GB7932504A patent/GB2033187B/en not_active Expired
- 1979-09-19 IT IT68838/79A patent/IT1165709B/it active
- 1979-09-19 SE SE7907748A patent/SE437579B/sv not_active IP Right Cessation
- 1979-09-20 ES ES484316A patent/ES484316A1/es not_active Expired
- 1979-09-20 BE BE0/197241A patent/BE878905A/fr not_active IP Right Cessation
- 1979-09-20 DD DD79215678A patent/DD146118A5/de unknown
- 1979-09-21 FR FR7923575A patent/FR2437043B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BR7905978A (pt) | 1980-07-08 |
| GB2033187A (en) | 1980-05-14 |
| JPS624776B2 (xx) | 1987-01-31 |
| FR2437043B1 (fr) | 1985-07-12 |
| JPS5545200A (en) | 1980-03-29 |
| ZA794547B (en) | 1981-04-29 |
| DK391279A (da) | 1980-03-23 |
| FR2437043A1 (fr) | 1980-04-18 |
| CA1123640A (en) | 1982-05-18 |
| IT1165709B (it) | 1987-04-22 |
| DE2937427A1 (de) | 1980-04-10 |
| DD146118A5 (de) | 1981-01-21 |
| DE2937427C2 (xx) | 1989-07-06 |
| SE7907748L (sv) | 1980-03-23 |
| AR223848A1 (es) | 1981-09-30 |
| IT7968838A0 (it) | 1979-09-19 |
| ES484316A1 (es) | 1980-05-16 |
| AU530291B2 (en) | 1983-07-07 |
| BE878905A (fr) | 1980-03-20 |
| AU5093679A (en) | 1980-03-27 |
| GB2033187B (en) | 1983-01-19 |
| SE437579B (sv) | 1985-03-04 |
| US4253019A (en) | 1981-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A1B | A search report has been drawn up | ||
| A85 | Still pending on 85-01-01 | ||
| BV | The patent application has lapsed |