GB9004306D0 - Optical lens system of optical information recording/reproducing apparatus - Google Patents
Optical lens system of optical information recording/reproducing apparatusInfo
- Publication number
- GB9004306D0 GB9004306D0 GB909004306A GB9004306A GB9004306D0 GB 9004306 D0 GB9004306 D0 GB 9004306D0 GB 909004306 A GB909004306 A GB 909004306A GB 9004306 A GB9004306 A GB 9004306A GB 9004306 D0 GB9004306 D0 GB 9004306D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- information recording
- reproducing apparatus
- lens system
- optical
- optical lens
- 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.)
- Granted
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
- G11B7/1372—Lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
-
- 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
- G11B7/1372—Lenses
- G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4759089 | 1989-02-28 | ||
JP4758989 | 1989-02-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9004306D0 true GB9004306D0 (en) | 1990-04-25 |
GB2229292A GB2229292A (en) | 1990-09-19 |
GB2229292B GB2229292B (en) | 1993-02-10 |
Family
ID=26387763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9004306A Expired - Fee Related GB2229292B (en) | 1989-02-28 | 1990-02-27 | Objective lens system of optical information recording/reproducing apparatus |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2902435B2 (en) |
DE (1) | DE4006275C2 (en) |
FR (1) | FR2643727B1 (en) |
GB (1) | GB2229292B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5491678A (en) * | 1990-05-25 | 1996-02-13 | Hitachi, Ltd. | Method and apparatus for recording/reproducing information data in a two-dimensional format |
US5835469A (en) * | 1990-05-25 | 1998-11-10 | Hitachi, Ltd. | High-density information recording/reproducing method |
JP3507956B2 (en) * | 1993-10-13 | 2004-03-15 | 株式会社日立製作所 | optical disk |
US5629799A (en) * | 1992-07-16 | 1997-05-13 | Asahi Kogaku Kogyo Kabushiki Kaisha | Chromatic aberration correcting element and its application |
EP1120779B1 (en) * | 1992-08-07 | 2003-02-26 | Matsushita Electric Industrial Co., Ltd. | Optical storage apparatus |
CN1124595C (en) * | 1994-03-25 | 2003-10-15 | 株式会社日立制作所 | High density information recording and reproducing method |
DE19534638A1 (en) * | 1994-09-19 | 1996-03-21 | Rodenstock Optik G | Optical system used as size reducing objective |
KR100765736B1 (en) | 2000-09-21 | 2007-10-15 | 삼성전자주식회사 | Optical pickup apparatus by employing chromatic aberration compensating lens |
EP1386315B1 (en) * | 2001-04-25 | 2006-08-16 | Koninklijke Philips Electronics N.V. | Scanning device including a partly plastic high-na objective system |
JP2013174905A (en) * | 2013-04-23 | 2013-09-05 | Olympus Medical Systems Corp | Light source optical system |
CN111853699B (en) * | 2020-08-28 | 2021-02-12 | 广东烨嘉光电科技股份有限公司 | Large-aperture three-piece lens optical lens |
CN115128008B (en) * | 2022-08-30 | 2022-12-02 | 苏州高视半导体技术有限公司 | Cylindrical lens group for semiconductor microscopic detection and semiconductor microscopic detection system |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5923313A (en) * | 1982-07-29 | 1984-02-06 | Minolta Camera Co Ltd | Large aperture condenser lens |
JPH0625823B2 (en) * | 1985-05-14 | 1994-04-06 | 株式会社三協精機製作所 | Objective lens for optical disk |
JPS61275808A (en) * | 1985-05-31 | 1986-12-05 | Asahi Optical Co Ltd | Lens for optical disk |
US4743093A (en) * | 1985-09-16 | 1988-05-10 | Eastman Kodak Company | Optical disc player lens |
US4765723A (en) * | 1985-11-05 | 1988-08-23 | Minolta Camera Kabushiki Kaisha | Objective lens system for optical reading device |
JPH06100720B2 (en) * | 1986-03-03 | 1994-12-12 | 松下電器産業株式会社 | Objective lens for optical disk |
JPH087329B2 (en) * | 1986-05-19 | 1996-01-29 | コニカ株式会社 | Optical system for recording and reproducing optical information |
JPS6310118A (en) * | 1986-07-01 | 1988-01-16 | Asahi Optical Co Ltd | Lens for optical disk |
JPH01287519A (en) * | 1988-05-13 | 1989-11-20 | Matsushita Electric Ind Co Ltd | Collimator lens for optical disk |
US5298046A (en) * | 1993-01-06 | 1994-03-29 | Minnesota Mining And Manufacturing Company | Diesel particulate filter element and filter |
JPH06310118A (en) * | 1993-04-28 | 1994-11-04 | Matsushita Electric Ind Co Ltd | Pack constituting battery |
-
1990
- 1990-02-26 JP JP2046869A patent/JP2902435B2/en not_active Expired - Fee Related
- 1990-02-27 GB GB9004306A patent/GB2229292B/en not_active Expired - Fee Related
- 1990-02-27 FR FR9002398A patent/FR2643727B1/en not_active Expired - Fee Related
- 1990-02-28 DE DE4006275A patent/DE4006275C2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2643727A1 (en) | 1990-08-31 |
FR2643727B1 (en) | 1994-05-06 |
JP2902435B2 (en) | 1999-06-07 |
GB2229292B (en) | 1993-02-10 |
DE4006275A1 (en) | 1990-09-13 |
JPH03155515A (en) | 1991-07-03 |
DE4006275C2 (en) | 1995-04-27 |
GB2229292A (en) | 1990-09-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |