JPS648228U - - Google Patents
Info
- Publication number
- JPS648228U JPS648228U JP10245787U JP10245787U JPS648228U JP S648228 U JPS648228 U JP S648228U JP 10245787 U JP10245787 U JP 10245787U JP 10245787 U JP10245787 U JP 10245787U JP S648228 U JPS648228 U JP S648228U
- Authority
- JP
- Japan
- Prior art keywords
- optical means
- optical
- information surfaces
- reflected
- laser beam
- 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 14
- 238000001514 detection method Methods 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245787U JPS648228U (zh) | 1987-07-03 | 1987-07-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245787U JPS648228U (zh) | 1987-07-03 | 1987-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS648228U true JPS648228U (zh) | 1989-01-18 |
Family
ID=31332384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10245787U Pending JPS648228U (zh) | 1987-07-03 | 1987-07-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS648228U (zh) |
-
1987
- 1987-07-03 JP JP10245787U patent/JPS648228U/ja active Pending