US 12,149,214 B2
Vacuum tube for amplifier circuit, and amplifier circuit using same
Hiroshige Mori, Hamamatsu (JP); Yasuaki Maekawa, Hamamatsu (JP); and Masayuki Sato, Hamamatsu (JP)
Assigned to HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
Appl. No. 17/283,081
Filed by HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
PCT Filed Aug. 1, 2019, PCT No. PCT/JP2019/030345
§ 371(c)(1), (2) Date Apr. 6, 2021,
PCT Pub. No. WO2020/079922, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 2018-195227 (JP), filed on Oct. 16, 2018.
Prior Publication US 2021/0384871 A1, Dec. 9, 2021
Int. Cl. H03F 3/02 (2006.01); H01J 19/02 (2006.01); H01J 19/54 (2006.01)
CPC H03F 3/02 (2013.01) [H01J 19/02 (2013.01); H01J 19/54 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vacuum tube for amplifier circuit, the amplifier circuit configured to receive a signal input to generate an amplification signal, the vacuum tube comprising:
an incidence window portion configured to transmit signal light;
a photoelectric conversion unit configured to convert the signal light transmitted through the incidence window portion into photoelectrons;
an output unit configured to have an anode, on which the photoelectrons are incident, and output a signal associated with the amplification signal, and the signal corresponding to the photoelectrons incident on the anode; and
a grid electrode configured to be disposed in a path of the photoelectrons from the photoelectric conversion unit to the anode and control an amount of the photoelectrons incident on the anode based on the signal input.