JPH0150971B2 - - Google Patents
Info
- Publication number
- JPH0150971B2 JPH0150971B2 JP3846682A JP3846682A JPH0150971B2 JP H0150971 B2 JPH0150971 B2 JP H0150971B2 JP 3846682 A JP3846682 A JP 3846682A JP 3846682 A JP3846682 A JP 3846682A JP H0150971 B2 JPH0150971 B2 JP H0150971B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- light
- groove
- information
- optical
- 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 29
- 238000000034 method Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 description 13
- 239000010409 thin film Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000004075 alteration Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 229910016629 MnBi Inorganic materials 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000010287 polarization 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
-
- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57038466A JPS58155522A (ja) | 1982-03-10 | 1982-03-10 | 光ディスク再生方式 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57038466A JPS58155522A (ja) | 1982-03-10 | 1982-03-10 | 光ディスク再生方式 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58155522A JPS58155522A (ja) | 1983-09-16 |
| JPH0150971B2 true JPH0150971B2 (enExample) | 1989-11-01 |
Family
ID=12526019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57038466A Granted JPS58155522A (ja) | 1982-03-10 | 1982-03-10 | 光ディスク再生方式 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58155522A (enExample) |
-
1982
- 1982-03-10 JP JP57038466A patent/JPS58155522A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58155522A (ja) | 1983-09-16 |
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