GB0005695D0 - Aperture stop for a flying optical head - Google Patents
Aperture stop for a flying optical headInfo
- Publication number
- GB0005695D0 GB0005695D0 GBGB0005695.2A GB0005695A GB0005695D0 GB 0005695 D0 GB0005695 D0 GB 0005695D0 GB 0005695 A GB0005695 A GB 0005695A GB 0005695 D0 GB0005695 D0 GB 0005695D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- aperture stop
- optical head
- flying optical
- lens
- slider body
- 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
- G11B7/1381—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
- G11B7/122—Flying-type heads, e.g. analogous to Winchester type in magnetic recording
-
- 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
- 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
- G11B7/139—Numerical aperture control means
-
- 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
- G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Abstract
An optical head (100) for performing optical data operations relative to a medium (118) includes a slider body (154) and at least one lens (150). Positioned between the slider body (154) and the lens (150) is an aperture stop (158) for blocking the transmittance of light. The aperture stop (158) includes an opaque layer that circumscribes a transparent region.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5946997P | 1997-09-22 | 1997-09-22 | |
PCT/US1998/001424 WO1999016063A1 (en) | 1997-09-22 | 1998-01-26 | Aperture stop for a flying optical head |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0005695D0 true GB0005695D0 (en) | 2000-05-03 |
GB2344928A GB2344928A (en) | 2000-06-21 |
GB2344928B GB2344928B (en) | 2002-02-20 |
Family
ID=22023155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0005695A Expired - Fee Related GB2344928B (en) | 1997-09-22 | 1998-01-26 | Aperture stop for a flying optical head |
Country Status (6)
Country | Link |
---|---|
JP (1) | JP2001517851A (en) |
KR (1) | KR20010024235A (en) |
CN (1) | CN1271453A (en) |
DE (1) | DE19882689T1 (en) |
GB (1) | GB2344928B (en) |
WO (1) | WO1999016063A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000033298A2 (en) * | 1998-12-04 | 2000-06-08 | Terastor Corporation | Monolithic optical head |
JP2004348854A (en) * | 2003-05-22 | 2004-12-09 | Sankyo Seiki Mfg Co Ltd | Optical head device |
KR100536680B1 (en) * | 2003-05-31 | 2005-12-14 | 주식회사 대우일렉트로닉스 | Holographic rom system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5361244A (en) * | 1991-04-10 | 1994-11-01 | Hitachi, Ltd. | Optical head and information recording apparatus |
KR930007024B1 (en) * | 1991-05-13 | 1993-07-26 | 삼성전자 주식회사 | Optical pick-up |
JPH07176070A (en) * | 1993-12-20 | 1995-07-14 | Matsushita Electric Ind Co Ltd | Floating optical head and optical recording and reproducing device |
US5680252A (en) * | 1995-03-23 | 1997-10-21 | Martin Marietta Energy Systems, Inc. | Miniature hybrid optical imaging lens |
US5727111A (en) * | 1995-06-19 | 1998-03-10 | Sony Corporation | Optical pick-up and light detecting cover therefor |
US5659533A (en) * | 1996-07-23 | 1997-08-19 | Sampo Corporation | Method of using a single pick-up head to read and store data on discs of different thicknesses and structure of a pick-up head apparatus therefor |
-
1998
- 1998-01-26 JP JP2000513279A patent/JP2001517851A/en active Pending
- 1998-01-26 DE DE19882689T patent/DE19882689T1/en not_active Withdrawn
- 1998-01-26 CN CN98809369A patent/CN1271453A/en active Pending
- 1998-01-26 GB GB0005695A patent/GB2344928B/en not_active Expired - Fee Related
- 1998-01-26 KR KR1020007003053A patent/KR20010024235A/en not_active Application Discontinuation
- 1998-01-26 WO PCT/US1998/001424 patent/WO1999016063A1/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE19882689T1 (en) | 2000-09-28 |
GB2344928A (en) | 2000-06-21 |
KR20010024235A (en) | 2001-03-26 |
JP2001517851A (en) | 2001-10-09 |
WO1999016063A1 (en) | 1999-04-01 |
CN1271453A (en) | 2000-10-25 |
GB2344928B (en) | 2002-02-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0375298A3 (en) | Optical information recording media | |
ATE36617T1 (en) | OPTICAL RECORDER. | |
ATE145287T1 (en) | SOFT TORIC CONTACT LENS | |
DE68919880T2 (en) | Magnetically activating optical data link. | |
DE69023217D1 (en) | PROJECTION VISOR WITH OPTICAL WRITING. | |
AU550750B2 (en) | Optically readable record carrier | |
MY118028A (en) | Optical recording medium. | |
MY128091A (en) | Objective lens device and optical pickup adopting the same | |
GB2344928B (en) | Aperture stop for a flying optical head | |
AU2857084A (en) | Cosmetic contact lens | |
AU574523B2 (en) | Thermal recording medium and method | |
JPS57150152A (en) | Optical disc | |
JPS5331105A (en) | Information recording member | |
DE3170210D1 (en) | Spectacle glass for the short-sighted | |
USD265252S (en) | Headlight bezel for motorcycle fairing | |
DE3478328D1 (en) | CABINET DOOR | |
CA2183721A1 (en) | Electromagnetic Shutter and Cover | |
DE9110481U1 (en) | ||
FR2418478A2 (en) | Selectively filtered optical spectacles for e.g. tennis - have central clear region with surrounding partially opaque filter | |
FI831891A0 (en) | FOERFARANDE FOER FOERHINDRANDE AV LJUSKOPIERING AV DOKUMENT OCH FOER LJUSKOPIERING OTILLAEMPLIGT PASAMT LJUSKOPIERING FOERHINDRANDE TRYCKFAERG | |
AU537347B2 (en) | Recording optical information | |
EP0580066A3 (en) | Write/read device of optical information. | |
AU2035595A (en) | Annotation of photographic film with alphanumeric data using fiber optics | |
PL285887A2 (en) | Method of optically defining the nivelling plane and optical lvelling instrument therefor | |
JPS641588A (en) | Optical card |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20110126 |