公开(公告)号：US20200234935A1

公开(公告)日：2020-07-23

申请号：US16634693

申请日：2018-05-14

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takaaki NAGATA ,  Yoshihiro ISHIGAMI ,  Yasumasa HAMANA

IPC: H01J40/06 ,  H01J40/16

Abstract: A transmissive photocathode includes a light transmitting substrate that has a first surface on which light is incident and a second surface which emits light incident from a side of the first surface, a photoelectric conversion layer that is provided on the second surface side of the light transmitting substrate and converts the light emitted from the second surface into photoelectrons, a light transmitting conductive layer that is provided between the light transmitting substrate and the photoelectric conversion layer and is composed of a single-layered graphene, and a thermal stress alleviation layer that is provided between the photoelectric conversion layer and the light transmitting conductive layer and has light transmissivity. A thermal expansion coefficient of the thermal stress alleviation layer is smaller than a thermal expansion coefficient of the photoelectric conversion layer and larger than a thermal expansion coefficient of the graphene.

公开(公告)号：US20130248815A1

公开(公告)日：2013-09-26

申请号：US13849139

申请日：2013-03-22

Applicant: SANKEN ELECTRIC CO., LTD. ,  HAMAMATSU PHOTONICS K.K.

Inventor： Shunro FUKE ,  Tetsuji MATSUO ,  Yoshihiro ISHIGAMI ,  Tokuaki NIHASHI

IPC: H01J1/308 ,  H01J9/02

CPC classification number: H01J1/308 ,  H01J1/34 ,  H01J9/025 ,  H01J9/12 ,  H01J31/26 ,  H01J31/507

Abstract: A semiconductor photocathode includes an AlXGa1-XN layer (0≦X

Abstract translation: 半导体光电阴极包括通过SiO 2层和形成在AlXGa1-XN层上的含碱金属的层结合到玻璃基板上的AlXGa1-XN层（0 @ X <1）。 AlXGa1-XN层包括第一区域，第二区域，第一区域和第二区域之间的中间区域。 第二区域具有通过交替层叠阻挡层和阱层而形成的半导体超晶格结构，中间区域具有通过交替层压阻挡层和阱层而形成的半导体超晶格结构。 当一对相邻的阻挡层和阱层被定义为单位部分时，单位部分中Al的组成比X的平均值随着距离第二区域和SiO 2层之间的界面位置的距离而至少在 中间区域。

公开(公告)号：US20190187058A1

公开(公告)日：2019-06-20

申请号：US16098891

申请日：2017-02-23

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yutaka HASEGAWA ,  Takayuki NAKAMURA ,  Yoshihiro ISHIGAMI ,  Fusanori KONDO

IPC: G01N21/64

CPC classification number: G01N21/6489 ,  G01N21/64 ,  G01N21/645 ,  G01N2201/127

Abstract: A reference body 1 includes: a support 10 provided with a first light passing portion 18, a second light passing portion 19, a first accommodating space 14, and a second accommodating space 15; a first fluorescent body 20 accommodated in the first accommodating space 14 and configured to emit first fluorescence in a second wavelength band when irradiated with first excitation light in a first wavelength band through the first light passing portion 18; a second fluorescent body 30 accommodated in the second accommodating space 15 and configured to emit second fluorescence in the second wavelength band when irradiated with second excitation light in the first wavelength band through the second light passing portion 19; and a light shielding portion 13 disposed between the first accommodating space 14 and the second accommodating space 15. In a case where a light amount of the first excitation light incident on the first light passing portion 18 and a light amount of the second excitation light incident on the second light passing portion 19 are equal to each other, a light amount of the first fluorescence emitted from the first light passing portion 18 and a light amount of the second fluorescence emitted from the second light passing portion 19 are different from each other.