DE3686080T2 - Optische koepfe. - Google Patents
Optische koepfe.Info
- Publication number
- DE3686080T2 DE3686080T2 DE8686302591T DE3686080T DE3686080T2 DE 3686080 T2 DE3686080 T2 DE 3686080T2 DE 8686302591 T DE8686302591 T DE 8686302591T DE 3686080 T DE3686080 T DE 3686080T DE 3686080 T2 DE3686080 T2 DE 3686080T2
- Authority
- DE
- Germany
- Prior art keywords
- optical heads
- heads
- optical
- 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 - Lifetime
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
- G11B7/12—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
- G11B7/1362—Mirrors
-
- 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
- G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
-
- 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
- G11B7/0909—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 by astigmatic methods
-
- 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
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60075059A JPS61236035A (ja) | 1985-04-09 | 1985-04-09 | 光学ヘツド |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3686080D1 DE3686080D1 (de) | 1992-08-27 |
DE3686080T2 true DE3686080T2 (de) | 1993-03-04 |
Family
ID=13565250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686302591T Expired - Lifetime DE3686080T2 (de) | 1985-04-09 | 1986-04-08 | Optische koepfe. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4709139A (de) |
EP (1) | EP0198655B1 (de) |
JP (1) | JPS61236035A (de) |
KR (1) | KR950000899B1 (de) |
CA (1) | CA1259216A (de) |
DE (1) | DE3686080T2 (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS629537A (ja) * | 1985-07-08 | 1987-01-17 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
US5189651A (en) * | 1986-05-12 | 1993-02-23 | Pioneer Electronic Corporation | Optical system in magneto-optical recording and reproducing device |
JPH0810854Y2 (ja) * | 1986-05-12 | 1996-03-29 | パイオニア株式会社 | 光磁気記録媒体再生装置 |
CA1319194C (en) * | 1986-07-28 | 1993-06-15 | Hideaki Satou | Focusing error detector and optical data detecting device incorporating the focusing error detector |
US4978844A (en) * | 1986-07-31 | 1990-12-18 | Pioneer Electronic Corporation | Optical element carrying printed substrate and optical head device using the substrate |
US4792674A (en) * | 1986-07-31 | 1988-12-20 | Pioneer Electronic Corporation | Optical head assembly and element holder with positional adjustment |
JPH0514334Y2 (de) * | 1986-10-01 | 1993-04-16 | ||
US4886959A (en) * | 1986-11-27 | 1989-12-12 | Canon Kabushiki Kaisha | Optical information reproducing apparatus |
JPH0677332B2 (ja) * | 1988-05-31 | 1994-09-28 | 株式会社三協精機製作所 | 光ピックアップ |
JPH077510B2 (ja) * | 1988-05-31 | 1995-01-30 | アルプス電気株式会社 | 光学式ピックアップにおけるビームスプリッタの固定構造 |
JP2904434B2 (ja) * | 1988-08-12 | 1999-06-14 | パイオニア株式会社 | 光学式情報記録媒体及びその再生装置 |
US5036185A (en) * | 1988-12-27 | 1991-07-30 | Kabushiki Kaisha Toshiba | Optical apparatus for detecting a focusing state |
DE3942943A1 (de) * | 1989-12-23 | 1991-06-27 | Thomson Brandt Gmbh | Optische abtastvorrichtung |
JP2779229B2 (ja) * | 1989-09-29 | 1998-07-23 | パイオニア株式会社 | 非点収差発生装置 |
JPH0492236A (ja) * | 1990-08-07 | 1992-03-25 | Asahi Optical Co Ltd | 光ディスク装置の光学系 |
JP3157873B2 (ja) * | 1991-11-15 | 2001-04-16 | パイオニア株式会社 | 光ピックアップ装置における焦点制御装置 |
GB9208076D0 (en) * | 1992-04-03 | 1992-05-27 | Rank Brimar Ltd | Spatial light modulator system |
EP0602732A3 (de) * | 1992-12-17 | 1995-09-27 | Philips Electronics Nv | Optisches System mit Astigmatismuskompensation. |
JP3626003B2 (ja) * | 1997-10-06 | 2005-03-02 | 富士通株式会社 | 光学的情報記憶装置 |
EP1405308A1 (de) * | 2001-06-29 | 2004-04-07 | Koninklijke Philips Electronics N.V. | Optische abtastvorrichtung |
DE60217379T2 (de) * | 2001-10-16 | 2007-10-04 | Koninklijke Philips Electronics N.V. | Optischer abtaster |
JP4058638B2 (ja) * | 2004-02-10 | 2008-03-12 | 船井電機株式会社 | 光ピックアップ装置 |
JP2006079798A (ja) * | 2004-08-09 | 2006-03-23 | Sanyo Electric Co Ltd | 光ピックアップ装置 |
JP2009110558A (ja) * | 2007-10-26 | 2009-05-21 | Sanyo Electric Co Ltd | 光ピックアップ装置 |
US9958257B2 (en) | 2015-09-21 | 2018-05-01 | Kla-Tencor Corporation | Increasing dynamic range of a height sensor for inspection and metrology |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2868066A (en) * | 1957-09-09 | 1959-01-13 | Aerojet General Co | Optical rectifier |
SE312927B (de) * | 1967-12-22 | 1969-07-28 | Aga Ab | |
NL7907216A (nl) * | 1979-09-28 | 1981-03-31 | Philips Nv | Optisch fokusfout-detektiestelsel. |
NL8004892A (nl) * | 1980-08-29 | 1982-04-01 | Philips Nv | Inrichting voor het verwerken van optische informatie en werkwijze voor het vervaardigen van een coma-correctieplaat zoals toegepast in een dergelijke inrichting. |
US4412723A (en) * | 1981-05-28 | 1983-11-01 | The Perkin-Elmer Corporation | Optical system for correcting the aberrations of a beamsplitter in converging light |
JPS59167863A (ja) * | 1983-03-14 | 1984-09-21 | Minolta Camera Co Ltd | 光デイスク用光学系 |
US4541688A (en) * | 1984-06-11 | 1985-09-17 | Eastman Kodak Company | Optical beam splitters |
JPS6161240A (ja) * | 1984-09-03 | 1986-03-29 | Hitachi Ltd | 光学式信号再生装置 |
JPS61148641A (ja) * | 1984-12-21 | 1986-07-07 | Pioneer Electronic Corp | 光学装置 |
GB8600749D0 (en) * | 1986-01-14 | 1986-02-19 | Gower M C | Apparatus incorporating phase conjugate mirrors |
JPH0750526B2 (ja) * | 1986-03-15 | 1995-05-31 | ソニー株式会社 | デイスクプレ−ヤの光学ヘツド装置 |
-
1985
- 1985-04-09 JP JP60075059A patent/JPS61236035A/ja active Pending
-
1986
- 1986-04-03 CA CA000505750A patent/CA1259216A/en not_active Expired
- 1986-04-03 US US06/847,460 patent/US4709139A/en not_active Expired - Lifetime
- 1986-04-08 EP EP86302591A patent/EP0198655B1/de not_active Expired - Lifetime
- 1986-04-08 DE DE8686302591T patent/DE3686080T2/de not_active Expired - Lifetime
- 1986-04-09 KR KR1019860002685A patent/KR950000899B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0198655B1 (de) | 1992-07-22 |
KR950000899B1 (ko) | 1995-02-03 |
DE3686080D1 (de) | 1992-08-27 |
EP0198655A2 (de) | 1986-10-22 |
EP0198655A3 (en) | 1988-12-07 |
CA1259216A (en) | 1989-09-12 |
KR870010499A (ko) | 1987-11-30 |
JPS61236035A (ja) | 1986-10-21 |
US4709139A (en) | 1987-11-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |