US 12,354,858 B2
Electron tube, imaging device and electromagnetic wave detection device
Yasuhide Miyazaki, Hamamatsu (JP); Yuta Kuge, Hamamatsu (JP); Naoya Kawai, Hamamatsu (JP); Simon Lehnskov Lange, Copenhagen (DK); and Peter Uhd Jepsen, Copenhagen (DK)
Assigned to HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
Appl. No. 17/796,738
Filed by HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
PCT Filed Feb. 5, 2021, PCT No. PCT/EP2021/052815
§ 371(c)(1), (2) Date Aug. 1, 2022,
PCT Pub. No. WO2021/156442, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 20156121 (EP), filed on Feb. 7, 2020.
Prior Publication US 2023/0071586 A1, Mar. 9, 2023
Int. Cl. H01J 43/28 (2006.01); H01J 43/24 (2006.01)
CPC H01J 43/28 (2013.01) [H01J 43/246 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An electron tube comprising:
a housing sealed and including a window transmitting an electromagnetic wave;
an electron emitter disposed in the housing and including an electron- emission surface, a first electrode, and a second electrode, the electron-emission surface arranged to emit an electron in response to incidence of the electromagnetic wave, the first electrode and the second electrode being spaced away from each other and respectively arranged to apply potentials different from each other to the electron-emission surface; and
a holder disposed in the housing and holding the electron emitter, wherein
the electron-emission surface includes a first conductive line and a second conductive line at least partially disposed on the electron-emission surface, the first conductive line and the second conductive line being coupled with each other to emit an electron in response to incidence of the electromagnetic wave, the first conductive line being electrically connected to the first electrode, and the second conductive line spaced away from the first conductive line and electrically connected to the second electrode,
the first conductive line extends from the first electrode toward the second conductive line, and
the second conductive line extends from the second electrode toward the first conductive line.