FR2754096B1 - Dispositif a capteur optique de type compact - Google Patents
Dispositif a capteur optique de type compactInfo
- Publication number
- FR2754096B1 FR2754096B1 FR9712152A FR9712152A FR2754096B1 FR 2754096 B1 FR2754096 B1 FR 2754096B1 FR 9712152 A FR9712152 A FR 9712152A FR 9712152 A FR9712152 A FR 9712152A FR 2754096 B1 FR2754096 B1 FR 2754096B1
- Authority
- FR
- France
- Prior art keywords
- optical sensor
- sensor device
- type optical
- compact type
- compact
- 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
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
- G11B7/12—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
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960043093A KR19980023595A (ko) | 1996-09-30 | 1996-09-30 | 광 픽업 장치 |
KR1019960043094A KR19980023596A (ko) | 1996-09-30 | 1996-09-30 | 광 픽업 장치 |
KR1019960043087A KR19980023589A (ko) | 1996-09-30 | 1996-09-30 | 광 픽-업장치 |
KR1019960043086A KR19980023588A (ko) | 1996-09-30 | 1996-09-30 | 광 픽-업장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2754096A1 FR2754096A1 (fr) | 1998-04-03 |
FR2754096B1 true FR2754096B1 (fr) | 1999-12-10 |
Family
ID=27483159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9712152A Expired - Fee Related FR2754096B1 (fr) | 1996-09-30 | 1997-09-30 | Dispositif a capteur optique de type compact |
Country Status (5)
Country | Link |
---|---|
US (1) | US5905254A (fr) |
JP (1) | JPH10112054A (fr) |
CN (1) | CN1181537A (fr) |
FR (1) | FR2754096B1 (fr) |
NL (1) | NL1007179C2 (fr) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7907216A (nl) * | 1979-09-28 | 1981-03-31 | Philips Nv | Optisch fokusfout-detektiestelsel. |
EP0225564A3 (en) * | 1985-11-30 | 1988-07-06 | Kabushiki Kaisha Toshiba | Optical head |
KR900008380B1 (ko) * | 1986-07-01 | 1990-11-17 | 미쓰비시덴기 가부시기 가이샤 | 광학식 헤드장치 |
JPH0664750B2 (ja) * | 1987-04-27 | 1994-08-22 | パイオニア株式会社 | 光学ヘツド |
JPH04318333A (ja) * | 1991-04-17 | 1992-11-09 | Matsushita Electric Ind Co Ltd | 光ヘッド装置 |
US5646778A (en) * | 1991-05-28 | 1997-07-08 | Discovision Associates | Optical beamsplitter |
US5331622A (en) * | 1991-05-28 | 1994-07-19 | Applied Magnetics Corporation | Compact optical head |
US5309422A (en) * | 1991-06-10 | 1994-05-03 | Alps Electric Co., Ltd. | Light separation element and light receiving optical device using same |
KR950015241A (ko) * | 1993-11-16 | 1995-06-16 | 배순훈 | 광픽업의 포커스에러 검출방법 및 그 장치 |
US5787058A (en) * | 1995-05-31 | 1998-07-28 | Daewoo Electronics Co., Ltd. | Optical pickup apparatus utilizing a polygonal prism |
-
1997
- 1997-09-30 NL NL1007179A patent/NL1007179C2/nl not_active IP Right Cessation
- 1997-09-30 FR FR9712152A patent/FR2754096B1/fr not_active Expired - Fee Related
- 1997-09-30 JP JP9265663A patent/JPH10112054A/ja active Pending
- 1997-09-30 CN CN97122590A patent/CN1181537A/zh active Pending
- 1997-09-30 US US08/940,890 patent/US5905254A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
NL1007179A1 (nl) | 1998-03-31 |
FR2754096A1 (fr) | 1998-04-03 |
US5905254A (en) | 1999-05-18 |
JPH10112054A (ja) | 1998-04-28 |
NL1007179C2 (nl) | 1998-07-08 |
CN1181537A (zh) | 1998-05-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2738343B1 (fr) | Dispositif de microstratigraphie optique | |
FR2735586B1 (fr) | Dispositif optique | |
FR2740228B1 (fr) | Dispositif de branchement optique sous-marin | |
FR2746627B1 (fr) | Dispositif capteur d'empreintes | |
FR2731083B1 (fr) | Dispositif de balayage optique | |
FR2730829B1 (fr) | Dispositif de mesure de distance | |
FR2750490B1 (fr) | Dispositif du type capteur capacitif integre | |
FR2745377B1 (fr) | Capteur optique de vibrations | |
DE69833672D1 (de) | Optische abtastvorrichtung | |
DE59609428D1 (de) | Lichtelektrische Positionsmesseinrichtung | |
FR2740227B1 (fr) | Dispositif de detection tomoscopique laser | |
FR2739716B1 (fr) | Dispositif de lecture optique | |
FR2731518B1 (fr) | Capteur optique polyvalent | |
FR2737777B1 (fr) | Module de capteur | |
FR2754097B1 (fr) | Dispositif a capteur optique | |
DE69608740D1 (de) | Lasermessgerät | |
FR2668303B1 (fr) | Capteur optique a faible diaphotie. | |
FR2767975B1 (fr) | Dispositif preamplificateur optique | |
FR2754096B1 (fr) | Dispositif a capteur optique de type compact | |
FR2778548B1 (fr) | Capteur optique d'empreinte digitale compact | |
DE59704038D1 (de) | Optische positionsmesseinrichtung | |
FR2736491B1 (fr) | Dispositif de detection optique | |
FR2762090B1 (fr) | Capteur optique de resolution de position | |
FR2739717B1 (fr) | Dispositif de lecture optique | |
FR2685961B1 (fr) | Capteur optique de vibrations. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |