JPS6452119U - - Google Patents
Info
- Publication number
- JPS6452119U JPS6452119U JP14872787U JP14872787U JPS6452119U JP S6452119 U JPS6452119 U JP S6452119U JP 14872787 U JP14872787 U JP 14872787U JP 14872787 U JP14872787 U JP 14872787U JP S6452119 U JPS6452119 U JP S6452119U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- spatial filter
- light
- disk surface
- detection device
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14872787U JPS6452119U (fr) | 1987-09-29 | 1987-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14872787U JPS6452119U (fr) | 1987-09-29 | 1987-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6452119U true JPS6452119U (fr) | 1989-03-30 |
Family
ID=31420306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14872787U Pending JPS6452119U (fr) | 1987-09-29 | 1987-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6452119U (fr) |
-
1987
- 1987-09-29 JP JP14872787U patent/JPS6452119U/ja active Pending