JPS5285414A - Image pickup tube - Google Patents

Image pickup tube

Info

Publication number
JPS5285414A
JPS5285414A JP190276A JP190276A JPS5285414A JP S5285414 A JPS5285414 A JP S5285414A JP 190276 A JP190276 A JP 190276A JP 190276 A JP190276 A JP 190276A JP S5285414 A JPS5285414 A JP S5285414A
Authority
JP
Japan
Prior art keywords
lens
thermion
focused
refocusing
image pickup
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
JP190276A
Other languages
Japanese (ja)
Other versions
JPS5728178B2 (en
Inventor
Mitsuhiro Kurashige
Chihaya Ogusu
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP190276A priority Critical patent/JPS5285414A/en
Publication of JPS5285414A publication Critical patent/JPS5285414A/en
Publication of JPS5728178B2 publication Critical patent/JPS5728178B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To decrease influence of refocusing deterioration caused by astigmation of a main focusing lens and to improve image formation magnification on a targer by combining a refocusing lens with main focusing lens when a thermion radiated from cathode by adding a prefocusing lens to a Pierce type electron gun is focused to a high density electron beam efficiently by a fine aperture and the focused thermion is refocused on a target.
COPYRIGHT: (C)1977,JPO&Japio
JP190276A 1976-01-09 1976-01-09 Image pickup tube Granted JPS5285414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP190276A JPS5285414A (en) 1976-01-09 1976-01-09 Image pickup tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP190276A JPS5285414A (en) 1976-01-09 1976-01-09 Image pickup tube

Publications (2)

Publication Number Publication Date
JPS5285414A true JPS5285414A (en) 1977-07-15
JPS5728178B2 JPS5728178B2 (en) 1982-06-15

Family

ID=11514497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP190276A Granted JPS5285414A (en) 1976-01-09 1976-01-09 Image pickup tube

Country Status (1)

Country Link
JP (1) JPS5285414A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4874973A (en) * 1971-12-30 1973-10-09
JPS5014320U (en) * 1973-06-07 1975-02-14
JPS50146264A (en) * 1974-05-13 1975-11-22
JPS50158274A (en) * 1974-05-20 1975-12-22

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4874973A (en) * 1971-12-30 1973-10-09
JPS5014320U (en) * 1973-06-07 1975-02-14
JPS50146264A (en) * 1974-05-13 1975-11-22
JPS50158274A (en) * 1974-05-20 1975-12-22

Also Published As

Publication number Publication date
JPS5728178B2 (en) 1982-06-15

Similar Documents

Publication Publication Date Title
JPS5568056A (en) X-ray tube
JPS5632655A (en) Electron beam device
JPS5730253A (en) Secondary electron detector for scan type electron microscope
GB940480A (en) Electron discharge device
JPS55131946A (en) Electron gun
JPS5285414A (en) Image pickup tube
GB1318098A (en) Apparatus for producing a fucused electron beam
GB865050A (en) Improvements in or relating to x-ray shadow microscopes with adjustable optical focussing
GB1194355A (en) Improvements in or relating to Scanning Electron Microscopes.
JPS54561A (en) Cathode ray tube of projection type
GB2015817A (en) Television camera tube
US4266248A (en) Device having a camera tube
JPS54116828A (en) Image pickup tube
JPS5338965A (en) Electronic gun
JPS5318916A (en) Cathode-ray tube
GB451959A (en) A system, or method, of scanning an image: for use in conjunction with any moving spot scanning device, for television or the like
JPS56130066A (en) Photographing method of microscope image on electron microscope
JPS5538057A (en) Electron beam device
JPS5448481A (en) Electron ray unit
JPS5318945A (en) Electronic gun for cathode-ray tube
JPS5467367A (en) Application unit for particle ray
JPS5652846A (en) Electrostatically focusing and electromagnetically deflecting image pick-up tube
JPS6486431A (en) Cathode-ray tube
JPS54122029A (en) Pickup tube
JPS5679842A (en) Electromagnetic focusing picture tube