AU9007182A - Optical head device - Google Patents
Optical head deviceInfo
- Publication number
- AU9007182A AU9007182A AU90071/82A AU9007182A AU9007182A AU 9007182 A AU9007182 A AU 9007182A AU 90071/82 A AU90071/82 A AU 90071/82A AU 9007182 A AU9007182 A AU 9007182A AU 9007182 A AU9007182 A AU 9007182A
- Authority
- AU
- Australia
- Prior art keywords
- optical head
- head device
- optical
- head
- 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
- 230000003287 optical effect Effects 0.000 title 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
- G11B7/12—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
- G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
-
- 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
- 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
- G02B27/10—Beam splitting or combining systems
- G02B27/16—Beam splitting or combining systems used as aids for focusing
-
- 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
-
- 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
-
- 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
- G11B7/0937—Piezoelectric actuators
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Head (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56-176749 | 1981-11-04 | ||
JP56176749A JPS5880139A (en) | 1981-11-04 | 1981-11-04 | Optical head |
Publications (2)
Publication Number | Publication Date |
---|---|
AU9007182A true AU9007182A (en) | 1983-05-12 |
AU556305B2 AU556305B2 (en) | 1986-10-30 |
Family
ID=16019131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU90071/82A Expired AU556305B2 (en) | 1981-11-04 | 1982-11-01 | Optical head device |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5880139A (en) |
KR (1) | KR880002635B1 (en) |
AT (1) | AT376510B (en) |
AU (1) | AU556305B2 (en) |
CA (1) | CA1177165A (en) |
DE (1) | DE3240734C2 (en) |
FR (1) | FR2519458B1 (en) |
GB (1) | GB2109583B (en) |
NL (1) | NL8204248A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU584188B2 (en) * | 1985-04-22 | 1989-05-18 | Sony Corporation | Semiconductor laser apparatus for optical head |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8304212A (en) * | 1983-12-07 | 1984-10-01 | Philips Nv | SINGLE COLLIMATOR LENS WITH AN ASPHERIC SURFACE. |
JPS61269235A (en) * | 1985-05-24 | 1986-11-28 | Omron Tateisi Electronics Co | Optical information processing device |
JPS61269233A (en) * | 1985-05-24 | 1986-11-28 | Omron Tateisi Electronics Co | Optical information processing device |
JPH0687099B2 (en) * | 1986-10-08 | 1994-11-02 | 富士通株式会社 | Laser optical scanning device |
CA2079620A1 (en) * | 1991-10-25 | 1993-04-26 | Roeland M. T. Hekker | Holographic elements for an optical recording system |
US5272690A (en) * | 1992-03-05 | 1993-12-21 | International Business Machines Corporation | Hologram element system |
JPH10501647A (en) * | 1995-03-29 | 1998-02-10 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | Optical unit having radiation source, detector and grating, and scanning device having the optical unit |
GB0408383D0 (en) | 2004-04-15 | 2004-05-19 | Koninkl Philips Electronics Nv | A radio network and a method of operating a radio network |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4003059A (en) * | 1974-02-07 | 1977-01-11 | Canon Kabushiki Kaisha | Optical recorder having focus controlling means |
NL176315C (en) * | 1976-05-12 | 1985-03-18 | Philips Nv | OPTICAL SCANNER. |
NL7608561A (en) * | 1976-08-02 | 1978-02-06 | Philips Nv | OPTICAL READING UNIT FOR SCANNING A RECORD BEARING WITH A RADIATION-REFLECTING INFORMATION STRUCTURE. |
CA1091966A (en) * | 1976-10-15 | 1980-12-23 | Chiaki Kojima | Apparatus for reading signals recorded on a record carrier |
US4245882A (en) * | 1977-11-04 | 1981-01-20 | Environmental Research Institute Of Michigan | Doubly modulated on-axis thick hologram optical element |
NL7713711A (en) * | 1977-12-12 | 1979-06-14 | Philips Nv | OPTICAL READING UNIT FOR READING A MOVING DATA CARRIER, IN PARTICULAR FOR READING A VIDEO RECORD. |
JPS54109801A (en) * | 1978-02-17 | 1979-08-28 | Toshiba Corp | Optical reader |
JPS5573934A (en) * | 1978-11-20 | 1980-06-04 | Mansei Kogyo Kk | Reader for optical information |
JPS55163566A (en) * | 1979-06-05 | 1980-12-19 | Sony Corp | Hologram lens and its production and optical system signal using this hologram lens |
JPS5647933A (en) * | 1979-09-25 | 1981-04-30 | Sony Corp | Optical signal head |
JPS5680836A (en) * | 1979-12-07 | 1981-07-02 | Seiko Instr & Electronics Ltd | Optical information reader |
-
1981
- 1981-11-04 JP JP56176749A patent/JPS5880139A/en active Pending
-
1982
- 1982-11-01 AU AU90071/82A patent/AU556305B2/en not_active Expired
- 1982-11-02 CA CA000414665A patent/CA1177165A/en not_active Expired
- 1982-11-02 NL NL8204248A patent/NL8204248A/en active Search and Examination
- 1982-11-03 GB GB08231383A patent/GB2109583B/en not_active Expired
- 1982-11-04 AT AT0403082A patent/AT376510B/en not_active IP Right Cessation
- 1982-11-04 FR FR828218524A patent/FR2519458B1/en not_active Expired - Lifetime
- 1982-11-04 KR KR8204975A patent/KR880002635B1/en active
- 1982-11-04 DE DE3240734A patent/DE3240734C2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU584188B2 (en) * | 1985-04-22 | 1989-05-18 | Sony Corporation | Semiconductor laser apparatus for optical head |
Also Published As
Publication number | Publication date |
---|---|
AT376510B (en) | 1984-11-26 |
GB2109583B (en) | 1985-07-17 |
JPS5880139A (en) | 1983-05-14 |
ATA403082A (en) | 1984-04-15 |
FR2519458A1 (en) | 1983-07-08 |
AU556305B2 (en) | 1986-10-30 |
NL8204248A (en) | 1983-06-01 |
GB2109583A (en) | 1983-06-02 |
KR840002561A (en) | 1984-07-02 |
KR880002635B1 (en) | 1988-12-07 |
CA1177165A (en) | 1984-10-30 |
FR2519458B1 (en) | 1991-07-19 |
DE3240734A1 (en) | 1983-05-19 |
DE3240734C2 (en) | 1995-11-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |