JPS6130326B2 - - Google Patents
Info
- Publication number
- JPS6130326B2 JPS6130326B2 JP55045449A JP4544980A JPS6130326B2 JP S6130326 B2 JPS6130326 B2 JP S6130326B2 JP 55045449 A JP55045449 A JP 55045449A JP 4544980 A JP4544980 A JP 4544980A JP S6130326 B2 JPS6130326 B2 JP S6130326B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light beam
- disk
- light beams
- convex lens
- 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
- 210000001747 pupil Anatomy 0.000 claims description 27
- 230000003287 optical effect Effects 0.000 claims description 10
- 210000003128 head Anatomy 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009499 grossing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4544980A JPS56143545A (en) | 1980-04-07 | 1980-04-07 | Optical reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4544980A JPS56143545A (en) | 1980-04-07 | 1980-04-07 | Optical reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56143545A JPS56143545A (en) | 1981-11-09 |
JPS6130326B2 true JPS6130326B2 (fr) | 1986-07-12 |
Family
ID=12719643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4544980A Granted JPS56143545A (en) | 1980-04-07 | 1980-04-07 | Optical reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56143545A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62139220U (fr) * | 1986-02-26 | 1987-09-02 |
-
1980
- 1980-04-07 JP JP4544980A patent/JPS56143545A/ja active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62139220U (fr) * | 1986-02-26 | 1987-09-02 |
Also Published As
Publication number | Publication date |
---|---|
JPS56143545A (en) | 1981-11-09 |
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