AT371277B - Vorrichtung zur optischen scharfeinstellung - Google Patents
Vorrichtung zur optischen scharfeinstellungInfo
- Publication number
- AT371277B AT371277B AT0280181A AT280181A AT371277B AT 371277 B AT371277 B AT 371277B AT 0280181 A AT0280181 A AT 0280181A AT 280181 A AT280181 A AT 280181A AT 371277 B AT371277 B AT 371277B
- Authority
- AT
- Austria
- Prior art keywords
- optical focusing
- focusing
- optical
- 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
-
- 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
-
- 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8003729A NL8003729A (nl) | 1980-06-27 | 1980-06-27 | Inrichting voor optische scherpstelling. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ATA280181A ATA280181A (de) | 1982-10-15 |
| AT371277B true AT371277B (de) | 1983-06-10 |
Family
ID=19835527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT0280181A AT371277B (de) | 1980-06-27 | 1981-06-24 | Vorrichtung zur optischen scharfeinstellung |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4354103A (de) |
| JP (1) | JPS5730810A (de) |
| AT (1) | AT371277B (de) |
| AU (1) | AU540312B2 (de) |
| CA (1) | CA1160874A (de) |
| DE (1) | DE3124219A1 (de) |
| ES (1) | ES8204868A1 (de) |
| FR (1) | FR2485781A1 (de) |
| GB (1) | GB2078947B (de) |
| IT (1) | IT1137923B (de) |
| NL (1) | NL8003729A (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4418405A (en) * | 1981-06-29 | 1983-11-29 | Rca Corporation | Lens positioning controller for optical playback apparatus |
| US4580900A (en) * | 1982-04-02 | 1986-04-08 | Eaton Corporation | Auto focus alignment and measurement system and method |
| US4615621A (en) * | 1982-04-02 | 1986-10-07 | Eaton Corporation | Auto-focus alignment and measurement system and method |
| JPS58179947A (ja) * | 1982-04-15 | 1983-10-21 | Olympus Optical Co Ltd | 光情報再生装置における合焦検出方式 |
| DE3219503C2 (de) * | 1982-05-25 | 1985-08-08 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Vorrichtung zum selbsttätigen Fokussieren auf in optischen Geräten zu betrachtende Objekte |
| WO1985000457A1 (fr) * | 1983-07-06 | 1985-01-31 | Matsushita Electric Industrial Co., Ltd. | Photo-capteur |
| US4797545A (en) * | 1985-09-10 | 1989-01-10 | Mitsubishi Denki Kabushiki Kaisha | Optical head device having positionally adjustable parts |
| US4712887A (en) * | 1985-12-20 | 1987-12-15 | Dazar Corporation | Optical system for fast access optical data storage device |
| US5097456A (en) * | 1987-10-28 | 1992-03-17 | Oki Electric Industry Co., Ltd. | Optical head |
| US5251011A (en) * | 1989-06-28 | 1993-10-05 | Dainippon Screen Manufacturing Co., Ltd. | Displacement detection system |
| US5663554A (en) * | 1995-01-17 | 1997-09-02 | Agfa Division, Bayer Corporation | Weak lens focus adjusting mechanism based upon thickness of scanned material and imagesetter using same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2309888A1 (fr) * | 1975-04-30 | 1976-11-26 | Thomson Brandt | Dispositif optique de projection et lecteur optique comportant un tel dispositif |
| FR2330062A1 (fr) * | 1975-10-31 | 1977-05-27 | Thomson Brandt | Dispositif de recherche de focalisation et lecteur optique comportant un tel dispositif |
| JPS606014B2 (ja) * | 1976-10-07 | 1985-02-15 | ソニー株式会社 | 情報検出装置 |
| NL186121C (nl) * | 1977-12-16 | 1990-09-17 | Mitsubishi Electric Corp | Automatisch focusseerapparaat. |
-
1980
- 1980-06-27 NL NL8003729A patent/NL8003729A/nl not_active Application Discontinuation
- 1980-11-17 US US06/207,117 patent/US4354103A/en not_active Expired - Lifetime
-
1981
- 1981-06-20 DE DE19813124219 patent/DE3124219A1/de not_active Withdrawn
- 1981-06-24 GB GB8119416A patent/GB2078947B/en not_active Expired
- 1981-06-24 IT IT22545/81A patent/IT1137923B/it active
- 1981-06-24 AU AU72111/81A patent/AU540312B2/en not_active Expired - Fee Related
- 1981-06-24 JP JP9680881A patent/JPS5730810A/ja active Pending
- 1981-06-24 AT AT0280181A patent/AT371277B/de not_active IP Right Cessation
- 1981-06-25 ES ES503348A patent/ES8204868A1/es not_active Expired
- 1981-06-25 CA CA000380561A patent/CA1160874A/en not_active Expired
- 1981-06-26 FR FR8112672A patent/FR2485781A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| AU7211181A (en) | 1982-01-07 |
| JPS5730810A (en) | 1982-02-19 |
| IT1137923B (it) | 1986-09-10 |
| US4354103A (en) | 1982-10-12 |
| AU540312B2 (en) | 1984-11-08 |
| NL8003729A (nl) | 1982-01-18 |
| DE3124219A1 (de) | 1982-02-04 |
| ATA280181A (de) | 1982-10-15 |
| GB2078947B (en) | 1984-05-16 |
| IT8122545A0 (it) | 1981-06-24 |
| ES503348A0 (es) | 1982-05-01 |
| FR2485781A1 (fr) | 1981-12-31 |
| ES8204868A1 (es) | 1982-05-01 |
| GB2078947A (en) | 1982-01-13 |
| CA1160874A (en) | 1984-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EIH | Change in the person of patent owner | ||
| ELJ | Ceased due to non-payment of the annual fee | ||
| ELJ | Ceased due to non-payment of the annual fee |