JPS5468147A - Lens control circuit for electron microscope or the like - Google Patents

Lens control circuit for electron microscope or the like

Info

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
Application number
JP13536677A
Other languages
Japanese (ja)
Other versions
JPS5816745B2 (en
Inventor
Hideaki Kyogoku
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jeol Ltd
Original Assignee
Jeol Ltd
Nihon Denshi KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jeol Ltd, Nihon Denshi KK filed Critical Jeol Ltd
Priority to JP52135366A priority Critical patent/JPS5816745B2/en
Publication of JPS5468147A publication Critical patent/JPS5468147A/en
Publication of JPS5816745B2 publication Critical patent/JPS5816745B2/en
Expired legal-status Critical Current

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
JP52135366A 1977-11-11 1977-11-11 Lens control circuit for electron microscopes, etc. Expired JPS5816745B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499177A (en) * 1972-03-24 1974-01-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499177A (en) * 1972-03-24 1974-01-26

Cited By (2)

* Cited by examiner, † Cited by third party
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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