JPS5546259A - Metal vapor discharge lamp - Google Patents

Metal vapor discharge lamp

Info

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
Application number
JP11894578A
Other languages
Japanese (ja)
Inventor
Takeshi Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11894578A priority Critical patent/JPS5546259A/en
Publication of JPS5546259A publication Critical patent/JPS5546259A/en
Pending legal-status Critical Current

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
JP11894578A 1978-09-27 1978-09-27 Metal vapor discharge lamp Pending JPS5546259A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723861U (en) * 1980-07-17 1982-02-06
JPS6360264U (en) * 1986-10-07 1988-04-21

Cited By (2)

* Cited by examiner, † Cited by third party
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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