JPS632220U - - Google Patents
Info
- Publication number
- JPS632220U JPS632220U JP9370286U JP9370286U JPS632220U JP S632220 U JPS632220 U JP S632220U JP 9370286 U JP9370286 U JP 9370286U JP 9370286 U JP9370286 U JP 9370286U JP S632220 U JPS632220 U JP S632220U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- optical pickup
- aperture
- laser beam
- tracking direction
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9370286U JPS632220U (et) | 1986-06-19 | 1986-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9370286U JPS632220U (et) | 1986-06-19 | 1986-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS632220U true JPS632220U (et) | 1988-01-08 |
Family
ID=30956500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9370286U Pending JPS632220U (et) | 1986-06-19 | 1986-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS632220U (et) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153138A (en) * | 1979-05-14 | 1980-11-28 | Mitsubishi Electric Corp | Optical pickup unit |
| JPS59152530A (ja) * | 1983-02-21 | 1984-08-31 | Sony Corp | 光学式デイスクのピツクアツプ装置 |
-
1986
- 1986-06-19 JP JP9370286U patent/JPS632220U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153138A (en) * | 1979-05-14 | 1980-11-28 | Mitsubishi Electric Corp | Optical pickup unit |
| JPS59152530A (ja) * | 1983-02-21 | 1984-08-31 | Sony Corp | 光学式デイスクのピツクアツプ装置 |