Electron tube

Patent metadata

Field	Value
Publication number	US-10515775-B1
Application number	US-201916261676-A
Country	US
Kind code	B1
Filing date	Jan 30, 2019
Priority date	Jan 30, 2019
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

An electron tube includes a housing having an internal space airtightly sealed, and an electrode configured to generation or detection of energy by electron emission in the internal space. The housing has a main body part made of an insulating material and formed with a recess constituting the internal space, and a lid part fixed to the main body part so as to close an opening of the recess. The recess expands toward the opening side. The main body part is fixed with a penetrating member that is electrically connected to the electrode and passes through the main body part. The penetrating member has an internal space projecting part that projects from a bottom surface of the recess into the internal space.

First claim

What is claimed is:

1. An electron tube comprising:
a housing having an internal space airtightly sealed; and
an electrode configured for generation or detection of energy by electron emission in the internal space, wherein
the housing comprises
a main body part made of an insulating material and formed with a recess constituting the internal space, and
a lid part fixed to the main body part to close an opening of the recess;
the recess expands toward the opening;
a penetrating member, the penetrating member being electrically connected to the electrode and passing through the main body part; and
the penetrating member has an internal space projecting part projecting from a bottom surface of the recess into the internal space, wherein
the main body part includes a first plate-shaped part and a side wall part having a frame shape and provided on the first plate-shaped part;
the lid part includes a second plate-shaped part, the second plate-shaped part being fixed on the side wall part and facing the first plate-shaped part; and
the penetrating member passes through the first plate-shaped part.

2. An electron tube comprising:
a housing having an internal space airtightly sealed; and
an electrode configured for generation or detection of energy by electron emission in the internal space, wherein
the housing comprises
a main body part made of an insulating material and formed with a recess constituting the internal space, and
a lid part fixed to the main body part to close an opening of the recess;
the recess expands toward the opening;
a penetrating member, the penetrating member being electrically connected to the electrode and passing through the main body part; and
the penetrating Member has an internal space projecting part projecting from a bottom surface of the recess into the internal space, wherein
the electrode is held at a distal end side of the internal space projecting part of the penetrating member; and
the internal space projecting part has an enlarged part expanding toward the distal end side.

3. The electron tube according to claim 2 , wherein at least a part of the enlarged part is covered with an insulating part made of an insulating material.

4. The electron tube according to claim 2 , wherein a side surface of the enlarged part is continuously inclined to allow the penetrating member to expand toward the distal end side.

5. An electron tube comprising:
a housing having an internal space airtightly sealed; and
an electrode configured for generation or detection of energy by electron emission in the internal space, wherein
the housing comprises
a main body part made of an insulating material and formed with a recess constituting the internal space, and
a lid part fixed to the main body part to close an opening of the recess;
the recess expands toward the opening;
a penetrating member, the penetrating member being electrically connected to the electrode and passing through the main body part;
the penetrating member has an internal space projecting part projecting from a bottom surface of the recess into the internal space; and
as another electrode different from the electrode, a counter electrode provided on the lid part to face the penetrating member, wherein
the counter electrode is electrically connected to a power supply part passing through the main body part without being exposed in the internal space.

6. An electron tube comprising:
a housing having an internal space airtightly sealed; and
an electrode configured for generation or detection of energy by electron emission in the internal space, wherein
the housing comprises
a main body part made of an insulating material and formed with a recess constituting the internal space, and
a lid part fixed to the main body part to close an opening of the recess;
the recess expands toward the opening;
a penetrating member, the penetrating member being electrically connected to the electrode and passing through the main body part; and
the penetrating member has an internal space projecting part projecting from a bottom surface of the recess into the internal space, wherein
the lid part and the main body part have a sealing part interposed therebetween to secure the lid part to the main body part, and
the penetrating member penetrates through the main body part without passing through the sealing part.

7. The electron tube according to claim 6 , wherein the sealing part includes a sealing material and a metallic film configured to improve airtightness between the sealing material and the lid and main body parts.

8. The electron tube according to claim 1 , wherein a side surface of the recess is continuously inclined to allow the recess to expand toward the opening.

9. The electron tube according to claim 1 , wherein at least a part of a side surface of the internal space projecting part of the penetrating member is covered with an insulating part made of an insulating material.

10. The electron tube according to claim 1 , wherein the lid part is made of an insulating material having energy transmittance.

11. The electron tube according to claim 1 , wherein at least one of another recess, a protrusion, or a rough surface part is formed on at least a part of a surface constituting the internal space.

12. The electron tube according to claim 1 , wherein at least one of another recess, a protrusion, or a rough surface part is formed on at least a part of an outer Surface of the main body part.

13. The electron tube according to claim 1 , wherein the electrode is integrally formed with the penetrating member.

14. The electron tube according to claim 2 , wherein a side surface of the recess is continuously inclined to allow the recess to expand toward the opening.

15. The electron tube according to claim 2 , wherein at least a part of a side surface of the internal space projecting part of the penetrating member is covered with an insulating part made of an insulating material.

16. The electron tube according to claim 2 , wherein the lid part is made of an insulating material having energy transmittance.

17. The electron tube according to claim 2 , wherein at least one of another recess, a protrusion, or a rough surface part is formed on at least a part of a surface constituting the internal space.

18. The electron tube according to claim 2 , wherein at least one of another recess, a protrusion, or a rough surface part is formed on at least a part of an outer surface of the main body part.

19. The electron tube according to claim 2 , wherein the electrode is integrally formed with the penetrating member.

20. The electron tube according to claim 5 , wherein a side surface of the recess is continuously inclined to allow the recess to expand toward the opening.

21. The electron tube according to claim 5 , wherein at least a part of a side surface of the internal space projecting part of the penetrating member is covered with an insulating part made of an insulating material.

22. The electron tube according to claim 5 , wherein the lid is made of an insulating material having energy transmittance.

23. The electron tube according to claim 5 , wherein at least one of another recess, a protrusion, or a rough surface part is formed on at least a part of a surface constituting the internal space.

24. The electron tube according to claim 5 , wherein at least one of another recess, a protrusion, or a rough surface part is formed on at le

Assignees

• Hamamatsu Photonics Kk

Inventors

• Kodama Tsuyoshi
• Kohno Yasuyuki
• Hara Shinichi
• Shimoi Hideki
• Kageyama Hiroyuki
• Hasegawa Yusuke
• Kakei Ryota

Classifications

• G01J1/429

  applied to measurement of ultraviolet light (using counting tubes G01T) · CPC title

• H01J31/49

  Pick-up adapted for an input of electromagnetic radiation other than visible light and having an electric output, e.g. for an input of X-rays, for an input of infrared radiation · CPC title

• H01J29/861 Primary

  Vessels or containers characterised by the form or the structure thereof · CPC title

• H01J29/90 Primary

  Leading-in arrangements; Seals therefor · CPC title

• H01J2231/50021

  Ultraviolet · CPC title