JPS5546259A - Metal vapor discharge lamp - Google Patents
Metal vapor discharge lampInfo
- Publication number
- JPS5546259A JPS5546259A JP11894578A JP11894578A JPS5546259A JP S5546259 A JPS5546259 A JP S5546259A JP 11894578 A JP11894578 A JP 11894578A JP 11894578 A JP11894578 A JP 11894578A JP S5546259 A JPS5546259 A JP S5546259A
- Authority
- JP
- Japan
- Prior art keywords
- end portions
- light emitting
- ultraviolet
- tube
- lamp
- 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
Abstract
PURPOSE: To increase the effective illumination length on a printed matter or the like relative to the light emitting length of the lamp and to increase the left thereof, by causing the ultraviolet-ray transmittivity at the both end portions of the light emitting tube to be larger than at the center portion thereof.
CONSTITUTION: Enclosed in a light emitting tube 10 are mercury as a light emitting metal and argon as a rare gas. Electrodes 11, 11 are provided in the tube 10 at the both ends thereof. The light emitting tube 10 has its central portion 10a formed of normal quartz glass tube while both end portions 10b, 10b formed of synthesized quartz glass tube so that said end portions have higher ultraviolet-ray transmittivity than the central portion 10a. Accordingly, if the ultraviolet-ray intensity is lowered at the end portions of the lamp mainly due to blackening, the ultraviolet- ray intensity at the both end portions 10b, 10 will not extremely be lowered in comparison with the centeal portion. Thus, during the usage of the lamp, shortage in drying at the both end portions of the printed matter can be avoided.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11894578A JPS5546259A (en) | 1978-09-27 | 1978-09-27 | Metal vapor discharge lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11894578A JPS5546259A (en) | 1978-09-27 | 1978-09-27 | Metal vapor discharge lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5546259A true JPS5546259A (en) | 1980-03-31 |
Family
ID=14749124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11894578A Pending JPS5546259A (en) | 1978-09-27 | 1978-09-27 | Metal vapor discharge lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5546259A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5723861U (en) * | 1980-07-17 | 1982-02-06 | ||
JPS6360264U (en) * | 1986-10-07 | 1988-04-21 |
-
1978
- 1978-09-27 JP JP11894578A patent/JPS5546259A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5723861U (en) * | 1980-07-17 | 1982-02-06 | ||
JPS6360264U (en) * | 1986-10-07 | 1988-04-21 |
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