JPS6322370B2 - - Google Patents
Info
- Publication number
- JPS6322370B2 JPS6322370B2 JP57115607A JP11560782A JPS6322370B2 JP S6322370 B2 JPS6322370 B2 JP S6322370B2 JP 57115607 A JP57115607 A JP 57115607A JP 11560782 A JP11560782 A JP 11560782A JP S6322370 B2 JPS6322370 B2 JP S6322370B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical
- beam splitter
- receiving element
- light source
- 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 description 36
- 239000004065 semiconductor Substances 0.000 claims description 4
- 201000009310 astigmatism Diseases 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000004043 responsiveness Effects 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
- G11B7/12—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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115607A JPS598145A (ja) | 1982-07-05 | 1982-07-05 | 光学式ピツクアツプ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115607A JPS598145A (ja) | 1982-07-05 | 1982-07-05 | 光学式ピツクアツプ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS598145A JPS598145A (ja) | 1984-01-17 |
| JPS6322370B2 true JPS6322370B2 (US08124630-20120228-C00102.png) | 1988-05-11 |
Family
ID=14666822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57115607A Granted JPS598145A (ja) | 1982-07-05 | 1982-07-05 | 光学式ピツクアツプ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS598145A (US08124630-20120228-C00102.png) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0218640U (US08124630-20120228-C00102.png) * | 1988-07-18 | 1990-02-07 | ||
| US9708104B2 (en) | 2010-05-18 | 2017-07-18 | Intercontinental Great Brands Llc | Reclosable flexible packaging and methods for manufacturing same |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60192124U (ja) * | 1984-05-30 | 1985-12-20 | アルプス電気株式会社 | 光学式ピツクアツプ |
| US4733065A (en) * | 1984-06-27 | 1988-03-22 | Canon Kabushiki Kaisha | Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom |
| JPS6145434A (ja) * | 1984-08-09 | 1986-03-05 | Sankyo Seiki Mfg Co Ltd | 光学式情報記録再生装置のビ−ムスプリツタ |
| JPS6183115U (US08124630-20120228-C00102.png) * | 1984-11-05 | 1986-06-02 | ||
| JP2612436B2 (ja) * | 1985-10-15 | 1997-05-21 | 三菱電機株式会社 | 自動焦点調節装置 |
| JP2001034999A (ja) * | 1999-05-14 | 2001-02-09 | Fujitsu Ltd | 光情報記憶装置および光学素子 |
-
1982
- 1982-07-05 JP JP57115607A patent/JPS598145A/ja active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0218640U (US08124630-20120228-C00102.png) * | 1988-07-18 | 1990-02-07 | ||
| US9708104B2 (en) | 2010-05-18 | 2017-07-18 | Intercontinental Great Brands Llc | Reclosable flexible packaging and methods for manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS598145A (ja) | 1984-01-17 |
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