JPS5247366A - Electronic gun unit - Google Patents

Electronic gun unit

Info

Publication number
JPS5247366A
JPS5247366A JP12337175A JP12337175A JPS5247366A JP S5247366 A JPS5247366 A JP S5247366A JP 12337175 A JP12337175 A JP 12337175A JP 12337175 A JP12337175 A JP 12337175A JP S5247366 A JPS5247366 A JP S5247366A
Authority
JP
Japan
Prior art keywords
gun unit
electronic gun
electronic
largecurrent
analyzable
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
Application number
JP12337175A
Other languages
Japanese (ja)
Inventor
Yoshiya Kajiyama
Tadao Shima
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12337175A priority Critical patent/JPS5247366A/en
Publication of JPS5247366A publication Critical patent/JPS5247366A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: The beam limitation small hole is provided at the center of beam shielding plate, and a relatively large beam opening is provided at the outer circumference area. In this way, highly analyzable electronic beam or largecurrent electronic beam can be secured in accordance with functioning state.
COPYRIGHT: (C)1977,JPO&Japio
JP12337175A 1975-10-13 1975-10-13 Electronic gun unit Pending JPS5247366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12337175A JPS5247366A (en) 1975-10-13 1975-10-13 Electronic gun unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12337175A JPS5247366A (en) 1975-10-13 1975-10-13 Electronic gun unit

Publications (1)

Publication Number Publication Date
JPS5247366A true JPS5247366A (en) 1977-04-15

Family

ID=14858918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12337175A Pending JPS5247366A (en) 1975-10-13 1975-10-13 Electronic gun unit

Country Status (1)

Country Link
JP (1) JPS5247366A (en)

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