JPH0221059B2 - - Google Patents
Info
- Publication number
- JPH0221059B2 JPH0221059B2 JP58150270A JP15027083A JPH0221059B2 JP H0221059 B2 JPH0221059 B2 JP H0221059B2 JP 58150270 A JP58150270 A JP 58150270A JP 15027083 A JP15027083 A JP 15027083A JP H0221059 B2 JPH0221059 B2 JP H0221059B2
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- optical
- light beam
- optical axis
- beam splitter
- 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 75
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000010287 polarization Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect 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
-
- 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
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58150270A JPS6043237A (ja) | 1983-08-19 | 1983-08-19 | 光学ヘツド |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58150270A JPS6043237A (ja) | 1983-08-19 | 1983-08-19 | 光学ヘツド |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6043237A JPS6043237A (ja) | 1985-03-07 |
JPH0221059B2 true JPH0221059B2 (US08063081-20111122-C00044.png) | 1990-05-11 |
Family
ID=15493272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58150270A Granted JPS6043237A (ja) | 1983-08-19 | 1983-08-19 | 光学ヘツド |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6043237A (US08063081-20111122-C00044.png) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55150142A (en) * | 1979-05-07 | 1980-11-21 | Sony Corp | Optical signal reproducing head |
-
1983
- 1983-08-19 JP JP58150270A patent/JPS6043237A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55150142A (en) * | 1979-05-07 | 1980-11-21 | Sony Corp | Optical signal reproducing head |
Also Published As
Publication number | Publication date |
---|---|
JPS6043237A (ja) | 1985-03-07 |
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