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
- 230000005855 radiation Effects 0.000 title claims description 71
- 230000003287 optical effect Effects 0.000 title claims description 55
- 238000001514 detection method Methods 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000003384 imaging method Methods 0.000 claims 1
- 230000005693 optoelectronics Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- 230000004075 alteration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 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
- G11B7/08—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°)
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Automatic Focus Adjustment (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
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)
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 BR BR7801692A patent/BR7801692A/pt unknown
- 1978-03-20 DD DD78204290A patent/DD135654A5/xx unknown
- 1978-03-20 SE SE7803140A patent/SE424677B/sv not_active IP Right Cessation
- 1978-03-20 DK DK124478A patent/DK124478A/da unknown
- 1978-03-20 IT IT21384/78A patent/IT1093249B/it active
- 1978-03-20 AU AU34292/78A patent/AU516903B2/en not_active Expired
- 1978-03-20 JP JP53032272A patent/JPS6028055B2/ja not_active Expired
- 1978-03-20 GB GB10887/78A patent/GB1589035A/en not_active Expired
- 1978-03-21 ES ES468083A patent/ES468083A1/es not_active Expired
- 1978-03-21 BE BE186137A patent/BE865140A/xx not_active IP Right Cessation
- 1978-03-21 AT AT0200278A patent/AT371275B/de active
- 1978-03-22 FR FR7808297A patent/FR2385173A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| BE865140A (fr) | 1978-09-21 |
| IT1093249B (it) | 1985-07-19 |
| AT371275B (de) | 1983-06-10 |
| JPS53118103A (en) | 1978-10-16 |
| BR7801692A (pt) | 1979-01-02 |
| FR2385173B1 (enrdf_load_stackoverflow) | 1985-05-10 |
| DE2810566A1 (de) | 1978-09-28 |
| AU516903B2 (en) | 1981-06-25 |
| FR2385173A1 (fr) | 1978-10-20 |
| NL7706753A (nl) | 1978-12-22 |
| AR217276A1 (es) | 1980-03-14 |
| ES468083A1 (es) | 1978-12-16 |
| DE2810566C2 (enrdf_load_stackoverflow) | 1988-01-21 |
| AU3429278A (en) | 1979-09-27 |
| DD135654A5 (de) | 1979-05-16 |
| SE7803140L (sv) | 1978-09-24 |
| ATA200278A (de) | 1982-10-15 |
| GB1589035A (en) | 1981-05-07 |
| CA1116294A (en) | 1982-01-12 |
| IT7821384A0 (it) | 1978-03-20 |
| DK124478A (da) | 1978-09-24 |
| JPS6028055B2 (ja) | 1985-07-02 |
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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 |