JPH0293706U - - Google Patents
Info
- Publication number
- JPH0293706U JPH0293706U JP212689U JP212689U JPH0293706U JP H0293706 U JPH0293706 U JP H0293706U JP 212689 U JP212689 U JP 212689U JP 212689 U JP212689 U JP 212689U JP H0293706 U JPH0293706 U JP H0293706U
- Authority
- JP
- Japan
- Prior art keywords
- defocus
- objective lens
- length
- drive control
- control circuit
- 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 5
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP212689U JPH0293706U (cs) | 1989-01-13 | 1989-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP212689U JPH0293706U (cs) | 1989-01-13 | 1989-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0293706U true JPH0293706U (cs) | 1990-07-25 |
Family
ID=31202628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP212689U Pending JPH0293706U (cs) | 1989-01-13 | 1989-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0293706U (cs) |
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1989
- 1989-01-13 JP JP212689U patent/JPH0293706U/ja active Pending