CA1182914A - System for making a light beam scan a flat carrier with autofocusing - Google Patents
System for making a light beam scan a flat carrier with autofocusingInfo
- Publication number
- CA1182914A CA1182914A CA000245992A CA245992A CA1182914A CA 1182914 A CA1182914 A CA 1182914A CA 000245992 A CA000245992 A CA 000245992A CA 245992 A CA245992 A CA 245992A CA 1182914 A CA1182914 A CA 1182914A
- Authority
- CA
- Canada
- Prior art keywords
- light beam
- carrier
- lens
- record carrier
- face
- 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
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 230000000712 assembly Effects 0.000 abstract description 19
- 238000000429 assembly Methods 0.000 abstract description 19
- 230000003667 anti-reflective effect Effects 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- 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
-
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50022590A JPS51149004A (en) | 1975-02-24 | 1975-02-24 | Optical apparatus |
| JP22590/75 | 1975-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1182914A true CA1182914A (en) | 1985-02-19 |
Family
ID=12087055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000245992A Expired CA1182914A (en) | 1975-02-24 | 1976-02-18 | System for making a light beam scan a flat carrier with autofocusing |
Country Status (9)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5398802A (en) * | 1977-02-09 | 1978-08-29 | Mitsubishi Electric Corp | Optical reproducer |
| US4334302A (en) * | 1980-06-02 | 1982-06-08 | Peppers James M | Flexible recording disc stabilizing and guidance system |
| WO1984003985A1 (en) * | 1983-04-04 | 1984-10-11 | Storage Technology Partners | Center supported actuator carriage assembly |
| GB2260019A (en) * | 1991-09-27 | 1993-03-31 | Nsk Ltd | Optical disk drive and read/write apparatus |
| KR940006129B1 (ko) * | 1991-12-24 | 1994-07-06 | 삼성전자 주식회사 | 양면디스크 재생장치 |
| JPH10269602A (ja) * | 1997-03-26 | 1998-10-09 | Samsung Electron Co Ltd | 光ファイバーを用いたマスターディスク露光装置 |
| SG87758A1 (en) * | 1997-07-04 | 2002-04-16 | Michael Anh Nguyen | Off-axis optical pickup mechanism for dual-sided optical storage discs |
| US20070053276A1 (en) * | 2005-09-08 | 2007-03-08 | Hanks D M | Optics for double-sided media |
| US7890968B2 (en) * | 2007-01-26 | 2011-02-15 | Hewlett-Packard Development Company, L.P. | Optical disc device having two optomechanical mechanisms |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944727A (en) * | 1972-10-24 | 1976-03-16 | Mca Discovision, Inc. | Video disc player with movable mirror for directing light beam onto reflective disc |
| JPS5548282B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-06-20 | 1980-12-05 | ||
| US3959581A (en) * | 1975-01-29 | 1976-05-25 | Zenith Radio Corporation | Self-compensating focus system for optical video playback device |
| US3932701A (en) * | 1975-01-29 | 1976-01-13 | Zenith Radio Corporation | Self-compensating focus system for a reflective video disc |
-
1975
- 1975-02-24 JP JP50022590A patent/JPS51149004A/ja active Granted
-
1976
- 1976-02-18 US US05/658,999 patent/US4058834A/en not_active Expired - Lifetime
- 1976-02-18 GB GB6424/76A patent/GB1526333A/en not_active Expired
- 1976-02-18 CA CA000245992A patent/CA1182914A/en not_active Expired
- 1976-02-19 AU AU11242/76A patent/AU497045B2/en not_active Expired
- 1976-02-23 DE DE2607275A patent/DE2607275C3/de not_active Expired
- 1976-02-23 AT AT127276A patent/AT346927B/de not_active IP Right Cessation
- 1976-02-24 FR FR7605101A patent/FR2301879A1/fr active Granted
- 1976-02-24 NL NL7601897A patent/NL7601897A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS51149004A (en) | 1976-12-21 |
| DE2607275A1 (de) | 1976-09-02 |
| DE2607275B2 (de) | 1978-01-05 |
| US4058834A (en) | 1977-11-15 |
| JPS552847B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-01-22 |
| AT346927B (de) | 1978-12-11 |
| ATA127276A (de) | 1978-04-15 |
| GB1526333A (en) | 1978-09-27 |
| AU497045B2 (en) | 1978-11-23 |
| AU1124276A (en) | 1977-09-01 |
| DE2607275C3 (de) | 1978-09-28 |
| FR2301879A1 (fr) | 1976-09-17 |
| NL7601897A (nl) | 1976-08-26 |
| FR2301879B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR0127482B1 (ko) | 광학 주사장치, 주사장치에 사용하기 적합한 미러 대물렌즈, 주사장치가 설치된 광학 기록 및/또는 재생장치 | |
| US4517666A (en) | Optical head | |
| US4079248A (en) | Optical focussing sensor | |
| US5703862A (en) | Dual focus objective lens with two curvatures for focussing light on two different kinds of disks with different thicknesses | |
| EP0226403A2 (en) | Optical head apparatus | |
| RU2179750C2 (ru) | Оптический датчик | |
| US5787058A (en) | Optical pickup apparatus utilizing a polygonal prism | |
| CA1182914A (en) | System for making a light beam scan a flat carrier with autofocusing | |
| CA1095618A (en) | Optical signal play-back device with auto-focussing of a light beam at a record carrier surface | |
| US5768031A (en) | Objective lens | |
| US4716283A (en) | Optical head for focusing a light beam on an optical disk | |
| CA2278416A1 (en) | Catadioptric optical system, optical pickup and optical disk drive employing the same, and optical disk | |
| US4972075A (en) | Automatic focusing system with dual diffraction gratings and converging means | |
| US5737295A (en) | Dual-focus optical pickup for different thicknesses of recording medium | |
| US5745304A (en) | Integrated optical pickup system capable of reading optical disks of different thickness | |
| CA1099815A (en) | Apparatus for optically detecting information signals on a carrier | |
| US5018127A (en) | Light emitting apparatus having a plurality of light emitting points | |
| EP0224853B1 (en) | Optical head | |
| US5708641A (en) | Multiple focus optical pickup system | |
| US5761176A (en) | Optical head device with optically variable aperture for disks with different thicknesses | |
| US5708643A (en) | Multiple focus optical pickup system for alternatively reading a multiple number of optical disks | |
| US6249493B1 (en) | Recording or replay device and method for recognition of a focussing status | |
| JPH0434740A (ja) | 光学ヘッド | |
| US5557597A (en) | Focus error detector | |
| EP0272724A1 (en) | Optical scanning apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |