JPS5468147A - Lens control circuit for electron microscope or the like - Google Patents
Lens control circuit for electron microscope or the likeInfo
- Publication number
- JPS5468147A JPS5468147A JP13536677A JP13536677A JPS5468147A JP S5468147 A JPS5468147 A JP S5468147A JP 13536677 A JP13536677 A JP 13536677A JP 13536677 A JP13536677 A JP 13536677A JP S5468147 A JPS5468147 A JP S5468147A
- Authority
- JP
- Japan
- Prior art keywords
- magnification
- fixed magnification
- switch
- circuit
- code
- 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.)
- Granted
Links
Abstract
PURPOSE: To simplify the selective operation, by performing the selection to other magnification through taking the fixed magnification as reference, through the provision of the code generation circuit in which the code corresponding to the fixed magnification is set.
CONSTITUTION: In obtaining the fixed magnification image, the code corresponding to the fixed magnification if preset from the code generation circuit 9 to the counter 2b corresponding to the fixed magnification mode with the selection of the function switch 3. This code is fed to the decoder 5 via the output circuit 4. Next, in obtaining other magnification from the fixed magnification, when the switch 3 is left as it is and the magnification selection switch 1 only is selected, the counter 2b presetting this pluse is added or subtracted, and the output is fed to the decoder 5 via the circuit 4. Next, the selected reference voltage is added to the exciting circuit 8, exciting the lens 7. Accordingly, no switch 3 needs to be selected and the selective operation can be simplified.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52135366A JPS5816745B2 (en) | 1977-11-11 | 1977-11-11 | Lens control circuit for electron microscopes, etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52135366A JPS5816745B2 (en) | 1977-11-11 | 1977-11-11 | Lens control circuit for electron microscopes, etc. |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5468147A true JPS5468147A (en) | 1979-06-01 |
JPS5816745B2 JPS5816745B2 (en) | 1983-04-01 |
Family
ID=15150041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52135366A Expired JPS5816745B2 (en) | 1977-11-11 | 1977-11-11 | Lens control circuit for electron microscopes, etc. |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5816745B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59110951U (en) * | 1983-01-17 | 1984-07-26 | 日本電子株式会社 | Electron microscope observation control device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS499177A (en) * | 1972-03-24 | 1974-01-26 |
-
1977
- 1977-11-11 JP JP52135366A patent/JPS5816745B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS499177A (en) * | 1972-03-24 | 1974-01-26 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59110951U (en) * | 1983-01-17 | 1984-07-26 | 日本電子株式会社 | Electron microscope observation control device |
JPH0228606Y2 (en) * | 1983-01-17 | 1990-07-31 |
Also Published As
Publication number | Publication date |
---|---|
JPS5816745B2 (en) | 1983-04-01 |
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