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US 2023/0369035 A1Published application
Phototube
AssigneeHamamatsu Photonics K.K.
InventorsTsuyoshi KODAMA, Masaki YAMADA
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Abstract
A photoelectric tube includes a housing including a light transmitting portion, an electron emitting portion including a photoelectric surface disposed inside the housing, an electron capturing portion disposed between the light transmitting portion and the photoelectric surface inside the housing, and a conductive layer disposed on a light transmitting portion side of at least a part of the electron capturing portion to face the photoelectric surface inside the housing and configured to allow light to pass therethrough.
Claims7
1:
- A photoelectric tube comprising:
- a housing including a light transmitting portion;
- an electron emitting portion including a photoelectric surface disposed inside the housing;
- an electron capturing portion disposed between the light transmitting portion and the photoelectric surface inside the housing;
- and
- a conductive layer disposed on the light transmitting portion side of at least a part of the electron capturing portion to face the photoelectric surface inside the housing, and configured to allow light to pass therethrough.
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2:
- The photoelectric tube according to claim 1, wherein the conductive layer is disposed along the light transmitting portion to face the photoelectric surface inside the housing.
3:
- The photoelectric tube according to claim 1, wherein the electron capturing portion is a plate-shaped member, and is disposed to divide a region inside the housing when viewed from the light transmitting portion side.
4:
- The photoelectric tube according to claim 1, wherein:
- the housing further includes a main body having a recess;
- the light transmitting portion is attached to the main body to close an opening of the recess;
- the electron emitting portion and the electron capturing portion are supported by the main body;
- and
- the conductive layer is supported by the light transmitting portion.
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5:
- The photoelectric tube according to claim 4, wherein:
- the electron emitting portion is disposed on an inner surface of the recess;
- the electron capturing portion bridges over an opening edge of the recess;
- and
- the conductive layer is disposed on a surface of the light transmitting portion on the electron emitting portion side.
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6:
- The photoelectric tube according to claim 4, further comprising:
- a first conductive portion electrically connected to the electron capturing portion;
- and
- a second conductive portion electrically connected to the conductive layer,
- wherein a part of the first conductive portion, a part of the second conductive portion, and a part of the electron emitting portion are exposed to an outside on a surface of the main body on an opposite side from the light transmitting portion.
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7:
- The photoelectric tube according to claim 4, further comprising:
- a first conductive portion electrically connected to the electron capturing portion;
- a second conductive portion electrically connected to the conductive layer;
- and
- a wiring electrically connecting the electron emitting portion and the conductive layer to each other,
- wherein a part of the first conductive portion and a part of the second conductive portion are exposed to an outside on a surface of the main body on an opposite side from the light transmitting portion.
3 more elements