JPS5458344A - Thermal electron radiation cathode - Google Patents
Thermal electron radiation cathodeInfo
- Publication number
- JPS5458344A JPS5458344A JP12444777A JP12444777A JPS5458344A JP S5458344 A JPS5458344 A JP S5458344A JP 12444777 A JP12444777 A JP 12444777A JP 12444777 A JP12444777 A JP 12444777A JP S5458344 A JPS5458344 A JP S5458344A
- Authority
- JP
- Japan
- Prior art keywords
- thermal
- cathode
- cylinder
- support
- reflection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
PURPOSE: To increase the efficiency of thermal electron emission, by effectively shiedlding the heat radiated from the cathode, through the provision of the thermal reflection cylinder surrounding the cathode closely except for the direction of thermal electron emission.
CONSTITUTION: The conductive support 2 having the cathode 1 at the middle is fixed on a pair of support electrodes 3 fixed. Next, the thermal reflection cylinder 5 of cup shape having the notch left and right passing through the support 2 via slight clearance is fixed on the upper end of the support 6 standing straight at the center of the insulator 4. Further, the cylinder 5 and support 6 are made of the metal excellent in the thermal reflection such as stainless steel and tantulm. Thus, since the thermal rays from the cathode 1 is shielded with the cylinder 5 having good thermal reflection, the electrode 3 and Wenert cylinder can not thermally be distorted and the temperature of the cathode 1 can be increased, Thus, the efficiency of the thermal electron reflection can be increased
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12444777A JPS5458344A (en) | 1977-10-19 | 1977-10-19 | Thermal electron radiation cathode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12444777A JPS5458344A (en) | 1977-10-19 | 1977-10-19 | Thermal electron radiation cathode |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5458344A true JPS5458344A (en) | 1979-05-11 |
Family
ID=14885730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12444777A Pending JPS5458344A (en) | 1977-10-19 | 1977-10-19 | Thermal electron radiation cathode |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5458344A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4510884A (en) * | 1983-04-18 | 1985-04-16 | Itt Corporation | Device for providing a dual coating on an optical fiber |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS503568A (en) * | 1973-04-09 | 1975-01-14 | ||
JPS503564A (en) * | 1973-04-09 | 1975-01-14 |
-
1977
- 1977-10-19 JP JP12444777A patent/JPS5458344A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS503568A (en) * | 1973-04-09 | 1975-01-14 | ||
JPS503564A (en) * | 1973-04-09 | 1975-01-14 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4510884A (en) * | 1983-04-18 | 1985-04-16 | Itt Corporation | Device for providing a dual coating on an optical fiber |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5458344A (en) | Thermal electron radiation cathode | |
JPS5618336A (en) | Electron emission cathode | |
JPS5553842A (en) | Direct heating cathode structure | |
JPS53145562A (en) | Electronic gun | |
JPS553169A (en) | Character display unit | |
FR2417851A1 (en) | ELECTRONIC BEAM TUBE WITH A TRAP SURFACE AND AN ELECTRICALLY HEATED CATHODE WITH A POWER LESS THAN 250 MW | |
JPS5427349A (en) | Electron tube | |
JPS5271185A (en) | Rotating anode x-ray tube | |
JPS53137660A (en) | Electron gun | |
JPS52146559A (en) | Electrode forming method | |
JPS5430772A (en) | Manufacture of cathode-ray tube | |
JPS5458345A (en) | Electron gun | |
JPS5438761A (en) | Electronic gun assembly | |
JPS5373655A (en) | Promotion of condensation heat conducting by direct current | |
JPS5439734A (en) | Spark plug | |
GB1534495A (en) | Magnetically focussed tube | |
JPS55115242A (en) | Projection type braun tube | |
JPS5499557A (en) | Direct-heated cathode | |
JPS5578441A (en) | Magnetron | |
JPS57164566A (en) | Semiconductor device | |
JPS556855A (en) | Heat sensitive thyristor | |
JPS55108787A (en) | Rare gas ion laser tube | |
JPS5482160A (en) | Magnetron | |
JPS5565486A (en) | Gas laser tube | |
JPS6430152A (en) | Rotary groove type anode x-ray generator |