CS266336B2 - Optical sensing unit - Google Patents
Optical sensing unit Download PDFInfo
- Publication number
- CS266336B2 CS266336B2 CS865915A CS591586A CS266336B2 CS 266336 B2 CS266336 B2 CS 266336B2 CS 865915 A CS865915 A CS 865915A CS 591586 A CS591586 A CS 591586A CS 266336 B2 CS266336 B2 CS 266336B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- magnetic body
- coils
- coil
- magnetic
- lens
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims description 47
- 230000000712 assembly Effects 0.000 claims description 24
- 238000000429 assembly Methods 0.000 claims description 24
- 230000005284 excitation Effects 0.000 claims description 20
- 239000000696 magnetic material Substances 0.000 claims description 12
- 239000007779 soft material Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 description 10
- 230000002349 favourable effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000003362 replicative effect Effects 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 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
- G11B7/08—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
-
- 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
- G11B7/0925—Electromechanical actuators for lens positioning
- G11B7/0935—Details of the moving parts
-
- 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
- G11B7/0925—Electromechanical actuators for lens positioning
- G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
Landscapes
- Optical Recording Or Reproduction (AREA)
- Mechanical Optical Scanning Systems (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853529088 DE3529088A1 (de) | 1985-08-14 | 1985-08-14 | Lichtoptische vorrichtung zur lenkung bzw. ausrichtung eines strahlenbuendels |
| DE3529089A DE3529089C1 (de) | 1985-08-14 | 1985-08-14 | Lichtoptische Vorrichtung zur Lenkung bzw. Ausrichtung eines Strahlenbündels |
| NL8503237A NL8503237A (nl) | 1985-11-25 | 1985-11-25 | Optische aftasteenheid. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS591586A2 CS591586A2 (en) | 1989-03-14 |
| CS266336B2 true CS266336B2 (en) | 1989-12-13 |
Family
ID=27193400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS865915A CS266336B2 (en) | 1985-08-14 | 1986-08-07 | Optical sensing unit |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4783775A (ja) |
| EP (1) | EP0215498B1 (ja) |
| JP (1) | JP2615014B2 (ja) |
| KR (2) | KR870002559A (ja) |
| CA (1) | CA1280823C (ja) |
| CS (1) | CS266336B2 (ja) |
| DE (1) | DE3683227D1 (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8600168A (nl) * | 1986-01-27 | 1987-08-17 | Philips Nv | Optische aftasteenheid. |
| KR100471058B1 (ko) | 2001-10-23 | 2005-03-08 | 삼성전자주식회사 | 디스플레이장치 |
| US11462960B2 (en) * | 2019-12-02 | 2022-10-04 | Hiwin Mikrosystem Corp. | Rotor with first and second permanent magnets having support members and slots |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2443734A1 (fr) * | 1978-12-08 | 1980-07-04 | Thomson Csf | Dispositif d'acces a une piste portee par un support enregistrable ou lisible optiquement et systeme optique comportant un tel dispositif |
| DE3302918A1 (de) * | 1982-01-28 | 1983-08-04 | Ricoh Co., Ltd., Tokyo | Optische aufzeichnungs- und/oder leseeinrichtung |
| NL8202451A (nl) * | 1982-06-17 | 1984-01-16 | Philips Nv | Optische inrichting. |
| DE3234288C2 (de) * | 1982-09-16 | 1984-07-26 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Optische Vorrichtung zur Lenkung bzw. Ausrichtung eines Strahlenbündels |
| US4658390A (en) * | 1983-04-18 | 1987-04-14 | Sharp Kabushiki Kaisha | Optical focus position control in an optical memory system |
| CA1249744A (en) * | 1983-08-03 | 1989-02-07 | Mitsuru Takashima | Optical pickup having a driving unit |
| JPS6061927A (ja) * | 1983-09-16 | 1985-04-09 | Hitachi Ltd | 三次元対物レンズ駆動装置 |
| NL8303700A (nl) * | 1983-10-27 | 1985-05-17 | Philips Nv | Electro-optische inrichting. |
| NL8403052A (nl) * | 1984-10-08 | 1986-05-01 | Philips Nv | Optische inrichting. |
-
1986
- 1986-07-24 DE DE8686201315T patent/DE3683227D1/de not_active Expired - Lifetime
- 1986-07-24 US US06/889,149 patent/US4783775A/en not_active Expired - Fee Related
- 1986-07-24 EP EP86201315A patent/EP0215498B1/de not_active Expired - Lifetime
- 1986-08-07 CS CS865915A patent/CS266336B2/cs unknown
- 1986-08-07 CA CA000515511A patent/CA1280823C/en not_active Expired - Lifetime
- 1986-08-12 JP JP61187960A patent/JP2615014B2/ja not_active Expired - Lifetime
- 1986-08-14 KR KR1019860006707A patent/KR870002559A/ko active Granted
- 1986-08-14 KR KR1019860006707A patent/KR940008402B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0215498B1 (de) | 1992-01-02 |
| KR870002560A (ko) | 1987-03-31 |
| KR870002559A (ko) | 1987-03-31 |
| EP0215498A1 (de) | 1987-03-25 |
| CA1280823C (en) | 1991-02-26 |
| JPS6238539A (ja) | 1987-02-19 |
| DE3683227D1 (de) | 1992-02-13 |
| US4783775A (en) | 1988-11-08 |
| KR940008402B1 (ko) | 1994-09-14 |
| CS591586A2 (en) | 1989-03-14 |
| JP2615014B2 (ja) | 1997-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0287285B1 (en) | Device for driving optical parts of an optical pickup | |
| US4544241A (en) | Mirror position sensor and associated motor for improved track selection in optical data disk system | |
| US4939711A (en) | Arrangement for minimizing effects of leakage magnetic fields in optomagnetic recording/reproducing apparatus | |
| US4560925A (en) | Mirror position sensor and associated pivot suspension for improved track selection in optical data disk system | |
| US4734899A (en) | Optical scanning unit for projecting a beam onto an optical record carrier with positional control using sets of three coils with each set connected using two amplifiers | |
| KR970005353B1 (ko) | 광학 디스크 드라이브에 대한 전자기 렌즈 액추에이터 | |
| CS266336B2 (en) | Optical sensing unit | |
| KR100571491B1 (ko) | 2개의 렌즈부재를 구비한 렌즈계를 제조하는 방법 | |
| US6310840B1 (en) | Optical scanning device comprising a main lens and an auxiliary lens | |
| US4747668A (en) | Optical scanning unit | |
| US5289442A (en) | Optical scanner with a long fast access stroke | |
| KR100819939B1 (ko) | 틸트가능한 렌즈계를 구비한 광학주사장치 및 광학 재생장치 | |
| EP0574996B1 (en) | Device for optically scanning a surface | |
| NL8503237A (nl) | Optische aftasteenheid. | |
| JPS63174551A (ja) | ２次元駆動装置 | |
| JPS5946053B2 (ja) | 情報読取装置における情報検出ヘツド | |
| JPS63164029A (ja) | 対物レンズ駆動装置 | |
| NL8503238A (nl) | Optische aftasteenheid. | |
| JPS61264523A (ja) | 対物レンズの駆動装置 | |
| JPS59160833A (ja) | 投影レンズ駆動装置 | |
| JPS63113942A (ja) | 光ヘツド駆動装置 | |
| JPH0230096B2 (ja) | ||
| JPS59160835A (ja) | 投影レンズ駆動装置 | |
| KR20020047172A (ko) | 광학 주사장치 및 그 주사장치를 구비한 광학 재생장치 | |
| JPS63827A (ja) | 対物レンズ支持装置 |