JPS6123572B2 - - Google Patents
Info
- Publication number
- JPS6123572B2 JPS6123572B2 JP4845679A JP4845679A JPS6123572B2 JP S6123572 B2 JPS6123572 B2 JP S6123572B2 JP 4845679 A JP4845679 A JP 4845679A JP 4845679 A JP4845679 A JP 4845679A JP S6123572 B2 JPS6123572 B2 JP S6123572B2
- Authority
- JP
- Japan
- Prior art keywords
- information recording
- recording surface
- light
- prism
- photodetector
- 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 7
- 230000004907 flux Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4845679A JPS55139642A (en) | 1979-04-18 | 1979-04-18 | Optical information recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4845679A JPS55139642A (en) | 1979-04-18 | 1979-04-18 | Optical information recording and reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55139642A JPS55139642A (en) | 1980-10-31 |
JPS6123572B2 true JPS6123572B2 (US08066781-20111129-C00013.png) | 1986-06-06 |
Family
ID=12803850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4845679A Granted JPS55139642A (en) | 1979-04-18 | 1979-04-18 | Optical information recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55139642A (US08066781-20111129-C00013.png) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57133526A (en) * | 1981-02-10 | 1982-08-18 | Sharp Corp | Processor of optical information |
JPS57181433A (en) * | 1981-04-22 | 1982-11-08 | Olympus Optical Co Ltd | Tracking system for optical disc reproducer |
US4517666A (en) * | 1981-06-22 | 1985-05-14 | Tokyo Shibaura Denki Kabushiki Kaisha | Optical head |
US4521680A (en) * | 1981-07-20 | 1985-06-04 | Tokyo Shibaura Denki Kabushiki Kaisha | System for focusing a light beam on a light reflecting surface |
JPS59177542A (ja) * | 1983-03-29 | 1984-10-08 | Fuji Photo Film Co Ltd | ハロゲン化銀写真印画材料 |
-
1979
- 1979-04-18 JP JP4845679A patent/JPS55139642A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS55139642A (en) | 1980-10-31 |