JPS5572352A - Anode for electric discharge lamp and its production method - Google Patents
Anode for electric discharge lamp and its production methodInfo
- Publication number
- JPS5572352A JPS5572352A JP14601878A JP14601878A JPS5572352A JP S5572352 A JPS5572352 A JP S5572352A JP 14601878 A JP14601878 A JP 14601878A JP 14601878 A JP14601878 A JP 14601878A JP S5572352 A JPS5572352 A JP S5572352A
- Authority
- JP
- Japan
- Prior art keywords
- supporting part
- arc supporting
- anode
- carbonized
- pointed end
- 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
- Discharge Lamp (AREA)
Abstract
PURPOSE: To improve anode spot stability by carbonizing the pointed end of arc supporting part of treated tungsten anode over desired length.
CONSTITUTION: The pointed end of the arc supporting part 2 of a treated tungsten anode comprising a cylindrical body 1 and a connected corn shaped arc supporting part 2 is carbonized to form a carbide layer 3 where only length 1 which is longer than 1/4 of length of the arc supporting part L is carbonized. Carbon powder is applied on the desired part and treated at high temperature in a vacuum to cause solid state reaction, thus the pointed end of said arc supporting part is carbonized.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14601878A JPS5572352A (en) | 1978-11-28 | 1978-11-28 | Anode for electric discharge lamp and its production method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14601878A JPS5572352A (en) | 1978-11-28 | 1978-11-28 | Anode for electric discharge lamp and its production method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5572352A true JPS5572352A (en) | 1980-05-31 |
Family
ID=15398227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14601878A Pending JPS5572352A (en) | 1978-11-28 | 1978-11-28 | Anode for electric discharge lamp and its production method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5572352A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4906895A (en) * | 1987-07-14 | 1990-03-06 | Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. | High-pressure discharge lamp with stabilized arc |
JP2007265883A (en) * | 2006-03-29 | 2007-10-11 | Ushio Inc | High-pressure discharge lamp |
-
1978
- 1978-11-28 JP JP14601878A patent/JPS5572352A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4906895A (en) * | 1987-07-14 | 1990-03-06 | Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. | High-pressure discharge lamp with stabilized arc |
JP2007265883A (en) * | 2006-03-29 | 2007-10-11 | Ushio Inc | High-pressure discharge lamp |
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