Title:
電子管、電子管モジュール、及び光学装置
Document Type and Number:
Japanese Patent JP7369675
Kind Code:
B2
Abstract:
The electron tube includes a vacuum container having a light transmitting substrate, a photocathode provided on an inner surface of the light transmitting substrate, an anode provided in the vacuum container, and a prism. The prism includes a bottom surface bonded to an outer surface of the light transmitting substrate, a light incident surface, and a light reflecting surface configured to further reflect light, which is incident to the photocathode through the prism and the light transmitting substrate and reflected at an interface between the photocathode and the vacuum space, so that the light is re-enter the photocathode. The light reflecting surface has an outwardly convex curved surface shape. The light incident surface is located inward of an imaginary spherical surface that is along the light reflecting surface.
Inventors:
Rina Kanano
Shunsuke Kobayashi
Ginji Sugiura
Junichi Kondo
Yasumasa Matsuoka
Shunsuke Kobayashi
Ginji Sugiura
Junichi Kondo
Yasumasa Matsuoka
Application Number:
JP2020122767A
Publication Date:
October 26, 2023
Filing Date:
July 17, 2020
Export Citation:
Assignee:
Hamamatsu Photonics K.K.
International Classes:
H01J40/06; G01N21/64; G02B1/11; G02B5/04; G02B5/08; G02B5/10; G02B21/06; H01J1/34; H01J43/24
Domestic Patent References:
| JP41009931B1 | ||||
| JP10104057A | ||||
| JP2007184119A | ||||
| JP2009277515A | ||||
| JP2014522093A |
Foreign References:
| WO2019094441A1 |
Other References:
T. Hirschfeld,Procedures for Attenuated Total Reflection Study of Extremely Small Samples,Applied Optics,米国,Optica Society,1967年04月,Vol. 6, No. 4,pp. 715-718
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Kenichi Shibayama
Yoshiki Kuroki
Kenichi Shibayama