JPH0227736B2 - - Google Patents
Info
- Publication number
- JPH0227736B2 JPH0227736B2 JP58146365A JP14636583A JPH0227736B2 JP H0227736 B2 JPH0227736 B2 JP H0227736B2 JP 58146365 A JP58146365 A JP 58146365A JP 14636583 A JP14636583 A JP 14636583A JP H0227736 B2 JPH0227736 B2 JP H0227736B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- error signal
- receiving
- receiving element
- prism
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 24
- 230000004907 flux Effects 0.000 claims description 12
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 2
- 238000000926 separation method Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 9
- 230000010287 polarization Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 201000009310 astigmatism Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- NCGICGYLBXGBGN-UHFFFAOYSA-N 3-morpholin-4-yl-1-oxa-3-azonia-2-azanidacyclopent-3-en-5-imine;hydrochloride Chemical compound Cl.[N-]1OC(=N)C=[N+]1N1CCOCC1 NCGICGYLBXGBGN-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity 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
- G11B7/12—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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14636583A JPS6038742A (ja) | 1983-08-12 | 1983-08-12 | 光学ヘッド |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14636583A JPS6038742A (ja) | 1983-08-12 | 1983-08-12 | 光学ヘッド |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6038742A JPS6038742A (ja) | 1985-02-28 |
| JPH0227736B2 true JPH0227736B2 (US07368563-20080506-C00056.png) | 1990-06-19 |
Family
ID=15406069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14636583A Granted JPS6038742A (ja) | 1983-08-12 | 1983-08-12 | 光学ヘッド |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038742A (US07368563-20080506-C00056.png) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0224853B1 (en) * | 1985-11-30 | 1992-02-05 | Kabushiki Kaisha Toshiba | Optical head |
| US4817074A (en) * | 1985-12-19 | 1989-03-28 | Nec Corporation | Method and apparatus for detecting the focusing state and positioning accuracy of a light beam directed onto an optical disk tracking guide in an optical recording system |
| JPH03104773A (ja) * | 1989-09-20 | 1991-05-01 | Hitachi Ltd | 連結器引上げ装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5746334A (en) * | 1980-09-01 | 1982-03-16 | Matsushita Electric Ind Co Ltd | Optical information reproducer |
-
1983
- 1983-08-12 JP JP14636583A patent/JPS6038742A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5746334A (en) * | 1980-09-01 | 1982-03-16 | Matsushita Electric Ind Co Ltd | Optical information reproducer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6038742A (ja) | 1985-02-28 |
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