JPH01140626U - - Google Patents
Info
- Publication number
- JPH01140626U JPH01140626U JP3708888U JP3708888U JPH01140626U JP H01140626 U JPH01140626 U JP H01140626U JP 3708888 U JP3708888 U JP 3708888U JP 3708888 U JP3708888 U JP 3708888U JP H01140626 U JPH01140626 U JP H01140626U
- Authority
- JP
- Japan
- Prior art keywords
- pattern
- photodetection
- photodetector
- reflected light
- optical axis
- 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 4
- 239000000758 substrate Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3708888U JPH01140626U (en]) | 1988-03-23 | 1988-03-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3708888U JPH01140626U (en]) | 1988-03-23 | 1988-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01140626U true JPH01140626U (en]) | 1989-09-26 |
Family
ID=31263668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3708888U Pending JPH01140626U (en]) | 1988-03-23 | 1988-03-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01140626U (en]) |
-
1988
- 1988-03-23 JP JP3708888U patent/JPH01140626U/ja active Pending