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JPS5437388A - Discharge lamp - Google Patents

Discharge lamp

Info

Publication number
JPS5437388A
JPS5437388A JP10256377A JP10256377A JPS5437388A JP S5437388 A JPS5437388 A JP S5437388A JP 10256377 A JP10256377 A JP 10256377A JP 10256377 A JP10256377 A JP 10256377A JP S5437388 A JPS5437388 A JP S5437388A
Authority
JP
Japan
Prior art keywords
discharge lamp
quartz glass
lifetime
concentration
limiting
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
JP10256377A
Other languages
Japanese (ja)
Inventor
Takahiro Sugimoto
Tadao Kano
Akihiro Yonezawa
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 JP10256377A priority Critical patent/JPS5437388A/en
Publication of JPS5437388A publication Critical patent/JPS5437388A/en
Pending legal-status Critical Current

Links

Landscapes

  • Glass Compositions (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To improve the lifetime of a discharge lamp which has a luminescence tube made of quartz glass and utilizes radiation of ultraviolet rays, by limiting the concentration of metal oxides of the quartz glass under certain conditions.
COPYRIGHT: (C)1979,JPO&Japio
JP10256377A 1977-08-29 1977-08-29 Discharge lamp Pending JPS5437388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10256377A JPS5437388A (en) 1977-08-29 1977-08-29 Discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10256377A JPS5437388A (en) 1977-08-29 1977-08-29 Discharge lamp

Publications (1)

Publication Number Publication Date
JPS5437388A true JPS5437388A (en) 1979-03-19

Family

ID=14330686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10256377A Pending JPS5437388A (en) 1977-08-29 1977-08-29 Discharge lamp

Country Status (1)

Country Link
JP (1) JPS5437388A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56138853A (en) * 1980-03-31 1981-10-29 Ushio Inc Electric lamp
JP2002352768A (en) * 2001-05-23 2002-12-06 Ushio Inc Ultra-high pressure mercury lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56138853A (en) * 1980-03-31 1981-10-29 Ushio Inc Electric lamp
JPH0138355B2 (en) * 1980-03-31 1989-08-14 Ushio Electric Inc
JP2002352768A (en) * 2001-05-23 2002-12-06 Ushio Inc Ultra-high pressure mercury lamp

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