DE3784859D1 - Optischer kopf. - Google Patents
Optischer kopf.Info
- Publication number
- DE3784859D1 DE3784859D1 DE8787310715T DE3784859T DE3784859D1 DE 3784859 D1 DE3784859 D1 DE 3784859D1 DE 8787310715 T DE8787310715 T DE 8787310715T DE 3784859 T DE3784859 T DE 3784859T DE 3784859 D1 DE3784859 D1 DE 3784859D1
- Authority
- DE
- Germany
- Prior art keywords
- optical head
- optical
- head
- 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 - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1359—Single prisms
-
- 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
- G11B7/08—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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Elements Other Than Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986186833U JPS6391819U (de) | 1986-12-05 | 1986-12-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3784859D1 true DE3784859D1 (de) | 1993-04-22 |
DE3784859T2 DE3784859T2 (de) | 1993-10-14 |
Family
ID=16195420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE87310715T Expired - Fee Related DE3784859T2 (de) | 1986-12-05 | 1987-12-04 | Optischer Kopf. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4841507A (de) |
EP (1) | EP0270380B1 (de) |
JP (1) | JPS6391819U (de) |
KR (1) | KR900008969Y1 (de) |
CN (1) | CN1003683B (de) |
CA (1) | CA1302562C (de) |
DE (1) | DE3784859T2 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4970710A (en) * | 1987-07-29 | 1990-11-13 | Laser Magnetic Storage International Company | Method and apparatus for focus and tracking in an optical disk system |
US5195081A (en) * | 1988-04-22 | 1993-03-16 | Canon Kabushiki Kaisha | Optical apparatus for effecting recording and/or reproducing of information on/from and optical information recording medium |
DE68923833T2 (de) * | 1988-06-20 | 1996-06-13 | Mitsubishi Electric Corp | Optischer Kopf mit Kippkorrekturservomechanismus. |
US5315574A (en) * | 1988-10-28 | 1994-05-24 | Matsushita Electric Industrial Co., Ltd. | Optical head with polarized beam hologram |
JPH02265028A (ja) * | 1989-04-06 | 1990-10-29 | Mitsubishi Electric Corp | 光記録再生装置 |
US5027340A (en) * | 1989-06-01 | 1991-06-25 | Mitsubishi Denki Kabushiki Kaisha | Object lens head assembly |
JP2781625B2 (ja) * | 1989-12-13 | 1998-07-30 | 株式会社日立製作所 | 情報処理装置 |
JPH0417125A (ja) * | 1990-05-09 | 1992-01-21 | Mitsubishi Electric Corp | 光記録再生装置 |
DE4322149A1 (de) * | 1993-06-21 | 1994-12-22 | Fujitsu Ltd | Optische Informationsaufzeichnungs-/Wiedergabevorrichtung |
US5742572A (en) * | 1993-06-21 | 1998-04-21 | Fujitsu Limited | Optical information recording/reproducing apparatus which detects focal error |
US6185166B1 (en) | 1993-06-21 | 2001-02-06 | Fujitsu Limited | Optical information recording/reproducing apparatus |
JP3019181B2 (ja) * | 1993-12-27 | 2000-03-13 | 日本電気株式会社 | 光ヘッドのサーボ信号検出装置 |
KR100200828B1 (ko) * | 1994-07-30 | 1999-06-15 | 윤종용 | 포커스에러 검출장치 |
US5840672A (en) * | 1997-07-17 | 1998-11-24 | Ethyl Corporation | Antioxidant system for lubrication base oils |
JP4003129B2 (ja) * | 2003-01-22 | 2007-11-07 | ソニー株式会社 | 立体撮像装置、立体表示装置、立体撮像表示装置および情報記録方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6038771B2 (ja) * | 1978-06-19 | 1985-09-03 | パイオニア株式会社 | 光学式情報読取装置のサ−ボ装置 |
US4406520A (en) * | 1980-08-14 | 1983-09-27 | Universal Pioneer Corporation | Beam splitter optical system of signal pickup device |
JPS5897140A (ja) * | 1981-12-04 | 1983-06-09 | Victor Co Of Japan Ltd | 光学的情報信号再生装置 |
DE3472322D1 (en) * | 1983-08-26 | 1988-07-28 | Hitachi Ltd | Optical information recording and reproducing apparatus |
JPS6076038A (ja) * | 1983-10-03 | 1985-04-30 | Mitsubishi Electric Corp | 光学式情報処理装置 |
JP3033641B2 (ja) * | 1992-08-27 | 2000-04-17 | 北陸日本電気ソフトウェア株式会社 | エディタ上での位置チェック方式 |
JPH06129049A (ja) * | 1992-10-15 | 1994-05-10 | Matsushita Electric Works Ltd | システム天井 |
-
1986
- 1986-12-05 JP JP1986186833U patent/JPS6391819U/ja active Pending
-
1987
- 1987-07-15 KR KR2019870011584U patent/KR900008969Y1/ko not_active IP Right Cessation
- 1987-07-31 CN CN87105755.7A patent/CN1003683B/zh not_active Expired
- 1987-12-01 US US07/127,049 patent/US4841507A/en not_active Expired - Fee Related
- 1987-12-03 CA CA000553454A patent/CA1302562C/en not_active Expired - Fee Related
- 1987-12-04 DE DE87310715T patent/DE3784859T2/de not_active Expired - Fee Related
- 1987-12-04 EP EP87310715A patent/EP0270380B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0270380A3 (en) | 1990-04-25 |
DE3784859T2 (de) | 1993-10-14 |
US4841507A (en) | 1989-06-20 |
CN1003683B (zh) | 1989-03-22 |
KR900008969Y1 (ko) | 1990-09-29 |
KR880013257U (ko) | 1988-08-29 |
EP0270380B1 (de) | 1993-03-17 |
EP0270380A2 (de) | 1988-06-08 |
JPS6391819U (de) | 1988-06-14 |
CN87105755A (zh) | 1988-07-20 |
CA1302562C (en) | 1992-06-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |