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.)
Expired
Application number
GB27282/37A
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AGfiledCriticalZeiss Ikon AG
Publication of GB487372ApublicationCriticalpatent/GB487372A/en
H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
H01J29/48—Electron guns
H01J29/481—Electron guns using field-emission, photo-emission, or secondary-emission electron source
Landscapes
Electron Beam Exposure
(AREA)
Abstract
487,372. Electron multipliers. ZEISS IKON AKT.-GES. Oct. 7, 1937, No. 27282. Convention date, Aug. 13. [Class 39 (i)] Secondary-emitting grids 14 are placed between (i) the cathode and wehnelt cylinder 13 and (ii) the electron-optical lens 15 and the deflecting systems 17, 18 in a cathode-ray tube.
GB27282/37A1937-08-131937-10-07Improvements in or relating to braun tubes
ExpiredGB487372A
(en)