SE424677B - Apparat for avlesning av en optisk stralningsreflekterande uppteckningsberare - Google Patents
Apparat for avlesning av en optisk stralningsreflekterande uppteckningsberareInfo
- Publication number
- SE424677B SE424677B SE7803140A SE7803140A SE424677B SE 424677 B SE424677 B SE 424677B SE 7803140 A SE7803140 A SE 7803140A SE 7803140 A SE7803140 A SE 7803140A SE 424677 B SE424677 B SE 424677B
- Authority
- SE
- Sweden
- Prior art keywords
- radiation
- focusing
- reading
- detectors
- deflecting element
- Prior art date
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
- G11B7/08—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
-
- 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°)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7703123A NL7703123A (nl) | 1977-03-23 | 1977-03-23 | Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager. |
| NL7706753A NL7706753A (nl) | 1977-03-23 | 1977-06-20 | Inrichting voor het uitlezen van een optische stralingsreflekterende informatiedrager. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7803140L SE7803140L (sv) | 1978-09-24 |
| SE424677B true SE424677B (sv) | 1982-08-02 |
Family
ID=26645307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7803140A SE424677B (sv) | 1977-03-23 | 1978-03-20 | Apparat for avlesning av en optisk stralningsreflekterande uppteckningsberare |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS6028055B2 (de) |
| AR (1) | AR217276A1 (de) |
| AT (1) | AT371275B (de) |
| AU (1) | AU516903B2 (de) |
| BE (1) | BE865140A (de) |
| BR (1) | BR7801692A (de) |
| CA (1) | CA1116294A (de) |
| DD (1) | DD135654A5 (de) |
| DE (1) | DE2810566A1 (de) |
| DK (1) | DK124478A (de) |
| ES (1) | ES468083A1 (de) |
| FR (1) | FR2385173A1 (de) |
| GB (1) | GB1589035A (de) |
| IT (1) | IT1093249B (de) |
| NL (1) | NL7706753A (de) |
| SE (1) | SE424677B (de) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7809635A (nl) * | 1978-09-22 | 1980-03-25 | Philips Nv | Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur. |
| NL186353C (nl) * | 1979-06-12 | 1990-11-01 | Philips Nv | Inrichting voor het afbeelden van een maskerpatroon op een substraat voorzien van een opto-elektronisch detektiestelsel voor het bepalen van een afwijking tussen het beeldvlak van een projektielenzenstelsel en het substraatvlak. |
| FR2460523A1 (fr) * | 1979-06-29 | 1981-01-23 | Thomson Csf | Tete de lecture optique a source laser a semi-conducteur et dispositif de lecture par reflexion d'un support d'information comportant une telle tete optique |
| JPS5870434A (ja) * | 1981-10-22 | 1983-04-26 | Toshiba Corp | 光学ヘツド |
| JPS57186240A (en) * | 1981-11-09 | 1982-11-16 | Teac Co | Optical reproducing device |
| JPS59119548A (ja) * | 1982-12-25 | 1984-07-10 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
| JPS59125727U (ja) * | 1983-02-15 | 1984-08-24 | パイオニア株式会社 | 光学式情報ピツクアツプ装置 |
| US4630927A (en) * | 1983-02-15 | 1986-12-23 | General Electric Company | Optical projector |
| JPS60197950A (ja) * | 1984-03-22 | 1985-10-07 | Toshiba Corp | 光学ヘツド |
| JPH0626972Y2 (ja) * | 1986-10-03 | 1994-07-20 | パイオニア株式会社 | 光学式ピツクアツプ装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2313716A1 (fr) * | 1975-06-03 | 1976-12-31 | Thomson Brandt | Systeme optique de lecture par reflexion d'un support d'information |
-
1977
- 1977-06-20 NL NL7706753A patent/NL7706753A/xx not_active Application Discontinuation
-
1978
- 1978-02-16 AR AR271114A patent/AR217276A1/es active
- 1978-03-11 DE DE19782810566 patent/DE2810566A1/de active Granted
- 1978-03-15 CA CA299,001A patent/CA1116294A/en not_active Expired
- 1978-03-20 DK DK124478A patent/DK124478A/da unknown
- 1978-03-20 SE SE7803140A patent/SE424677B/sv not_active IP Right Cessation
- 1978-03-20 GB GB10887/78A patent/GB1589035A/en not_active Expired
- 1978-03-20 AU AU34292/78A patent/AU516903B2/en not_active Expired
- 1978-03-20 DD DD78204290A patent/DD135654A5/de unknown
- 1978-03-20 BR BR7801692A patent/BR7801692A/pt unknown
- 1978-03-20 JP JP53032272A patent/JPS6028055B2/ja not_active Expired
- 1978-03-20 IT IT21384/78A patent/IT1093249B/it active
- 1978-03-21 BE BE186137A patent/BE865140A/xx not_active IP Right Cessation
- 1978-03-21 AT AT0200278A patent/AT371275B/de active
- 1978-03-21 ES ES468083A patent/ES468083A1/es not_active Expired
- 1978-03-22 FR FR7808297A patent/FR2385173A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| BE865140A (fr) | 1978-09-21 |
| JPS6028055B2 (ja) | 1985-07-02 |
| IT1093249B (it) | 1985-07-19 |
| DK124478A (da) | 1978-09-24 |
| AU3429278A (en) | 1979-09-27 |
| BR7801692A (pt) | 1979-01-02 |
| ES468083A1 (es) | 1978-12-16 |
| AT371275B (de) | 1983-06-10 |
| DD135654A5 (de) | 1979-05-16 |
| DE2810566C2 (de) | 1988-01-21 |
| DE2810566A1 (de) | 1978-09-28 |
| ATA200278A (de) | 1982-10-15 |
| AR217276A1 (es) | 1980-03-14 |
| CA1116294A (en) | 1982-01-12 |
| JPS53118103A (en) | 1978-10-16 |
| GB1589035A (en) | 1981-05-07 |
| FR2385173B1 (de) | 1985-05-10 |
| IT7821384A0 (it) | 1978-03-20 |
| SE7803140L (sv) | 1978-09-24 |
| FR2385173A1 (fr) | 1978-10-20 |
| NL7706753A (nl) | 1978-12-22 |
| AU516903B2 (en) | 1981-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3876841A (en) | Apparatus for reading a flat reflecting record carrier with autofocusing means | |
| KR880001707B1 (ko) | 광전자 집속에러 검출장치 | |
| US4011400A (en) | Apparatus for reading an optically readable reflecting information structure | |
| US4358200A (en) | Optical focussing-error detection system | |
| KR100392857B1 (ko) | 기록 매체를 광학적으로 주사하기 위한 장치 | |
| US3992574A (en) | Opto-electronic system for determining a deviation between the actual position of a radiation-reflecting plane in an optical imaging system and the desired position of said plane | |
| EP0070552B1 (de) | Optischer Kopf | |
| EP0372629A2 (de) | Vorrichtung zum Abtasten einer Informationsfläche mit optischer Strahlung | |
| US4334139A (en) | Apparatus for writing patterns in a layer on a substrate by means of a beam of electrically charged particles | |
| EP0208538B1 (de) | Optischer Aufnahmekopf mit astigmatischer Fokussierung | |
| US4357533A (en) | Focus detector for an optical disc playback system | |
| EP0248479B1 (de) | Optische Messanordnung des Abstands zwischen einer Oberfläche und einer Bezugsebene | |
| US3924063A (en) | Variable optical wedge for scanning a light beam in an apparatus for reading an optically encoded disc | |
| EP0308022A1 (de) | Vorrichtung zum Abtasten einer strahlungsreflektierenden Informationsfläche mittels optischer Strahlung | |
| US4135207A (en) | Apparatus for reading an optical radiation-reflecting record carrier including a narrow focus control beam | |
| SE424677B (sv) | Apparat for avlesning av en optisk stralningsreflekterande uppteckningsberare | |
| SE437579B (sv) | Apparat for avlesning av en optisk uppteckningsberare med en stralningsreflekterande informationsstruktur | |
| EP0369510A1 (de) | Anordnung zum Abtasten einer Strahlung reflektierenden Oberfläche mittels optischer Strahlung | |
| GB2096316A (en) | Optical position detector | |
| JPH04319615A (ja) | 光学式高さ測定装置 | |
| CA1273717A (en) | Position sensitive radiation detector | |
| US4034403A (en) | Apparatus for positional control of a reading head in a device for reproducing optically coded video disk recordings | |
| KR100255264B1 (ko) | 정보 평면 광학 주사 장치 | |
| US4150399A (en) | Apparatus for reading a record carrier with an optical information structure | |
| EP0336737A2 (de) | Optisches Informationswiedergabegerät |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
Ref document number: 7803140-8 Effective date: 19900125 Format of ref document f/p: F |