JPH02144122U - - Google Patents
Info
- Publication number
- JPH02144122U JPH02144122U JP5104189U JP5104189U JPH02144122U JP H02144122 U JPH02144122 U JP H02144122U JP 5104189 U JP5104189 U JP 5104189U JP 5104189 U JP5104189 U JP 5104189U JP H02144122 U JPH02144122 U JP H02144122U
- Authority
- JP
- Japan
- Prior art keywords
- beams
- detection
- recording medium
- diffraction
- condensing
- 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 7
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000000926 separation method Methods 0.000 description 2
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5104189U JPH02144122U (cs) | 1989-04-28 | 1989-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5104189U JPH02144122U (cs) | 1989-04-28 | 1989-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02144122U true JPH02144122U (cs) | 1990-12-06 |
Family
ID=31570121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5104189U Pending JPH02144122U (cs) | 1989-04-28 | 1989-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02144122U (cs) |
-
1989
- 1989-04-28 JP JP5104189U patent/JPH02144122U/ja active Pending
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