ELECTRON TUBE AND IMAGING DEVICE - HAMAMATSU PHOTONICS KK

Title:

ELECTRON TUBE AND IMAGING DEVICE

Document Type and Number:

WIPO Patent Application WO/2020/262254

Kind Code:

A1

Abstract:

An electron tube includes a housing that is internally held in a vacuum and has a window transmitting an electromagnetic wave, an electron emitting unit that is disposed in the housing and has a meta-surface emitting electrons in response to incidence of the electromagnetic wave, an electron multiplying unit that is disposed in the housing and multiplies the electrons emitted from the electron emitting unit, and an electron collecting unit that is disposed in the housing and collects the electrons multiplied by the electron multiplying unit. The window contains at least one selected from quartz, silicon, germanium, sapphire, zinc selenide, zinc sulfide, magnesium fluoride, lithium fluoride, barium fluoride, calcium fluoride, magnesium oxide, and calcium carbonate.

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Inventors:

FUJITA TETSUYA (JP)
SUZUKI TAKAHIRO (JP)
MIYAZAKI YASUHIDE (JP)
KAWAI NAOYA (JP)
JEPSEN PETER UHD (DK)
LANGE SIMON LEHNSKOV (DK)

Application Number:

PCT/JP2020/024219

Publication Date:

December 30, 2020

Filing Date:

June 19, 2020

Export Citation:

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Assignee:

HAMAMATSU PHOTONICS KK (JP)
UNIV DENMARK TECH DTU (DK)

International Classes:

H01J1/78; H01J1/304; H01J1/34; H01J40/06; H01J40/16; H01J43/08

Domestic Patent References:

WO2012078043A1	2012-06-14
WO2015028029A1	2015-03-05

Foreign References:

EP0558308A1	1993-09-01
US5591986A	1997-01-07
US20160216201A1	2016-07-28

Other References:

ANONYMOUS: "Terahertz metamaterial - Wikipedia", 29 September 2019 (2019-09-29), XP055644415, Retrieved from the Internet [retrieved on 20191120]
ANONYMOUS: "Electromagnetic metasurface - Wikipedia", 8 July 2020 (2020-07-08), XP055716025, Retrieved from the Internet [retrieved on 20200717]

Attorney, Agent or Firm:

HASEGAWA Yoshiki et al. (JP)

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