JPS5447380A - High-pressure sodium vapor lamp - Google Patents

High-pressure sodium vapor lamp

Info

Publication number
JPS5447380A
JPS5447380A JP11348877A JP11348877A JPS5447380A JP S5447380 A JPS5447380 A JP S5447380A JP 11348877 A JP11348877 A JP 11348877A JP 11348877 A JP11348877 A JP 11348877A JP S5447380 A JPS5447380 A JP S5447380A
Authority
JP
Japan
Prior art keywords
tube
face
pressure sodium
vapor lamp
sodium vapor
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.)
Granted
Application number
JP11348877A
Other languages
Japanese (ja)
Other versions
JPS5733666B2 (en
Inventor
Shiyuuzou Akutsu
Masayoshi Miyashita
Seiji Sumi
Naoki Saito
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics Corp
Matsushita Electric Industrial 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 Matsushita Electronics Corp, Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electronics Corp
Priority to JP11348877A priority Critical patent/JPS5447380A/en
Publication of JPS5447380A publication Critical patent/JPS5447380A/en
Publication of JPS5733666B2 publication Critical patent/JPS5733666B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE: To provide a high-pressure sodium vapor lamp, having a conductive layer of metal on opposite ends of the light emitting tube, wherein said conductive layer of metal if extended to the end face of respective end cap to protect alumina tube from damages.
CONSTITUTION: In a high-pressure sodium vapor lamp, including a light emitting tube 1 made of transparent sapphire tube or polycrystal alumina ceramic tube, end caps 2 and niobium tube 6, a metal layer 4 is attached to each end of said tube 1, and it is extended to the end face of the end cap 2. Here, the arrangement is such that area S of said metal layer 4 extended to the end face of end cap 2 is greater than 40% of the entire area of the end face of the cap 2
COPYRIGHT: (C)1979,JPO&Japio
JP11348877A 1977-09-20 1977-09-20 High-pressure sodium vapor lamp Granted JPS5447380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11348877A JPS5447380A (en) 1977-09-20 1977-09-20 High-pressure sodium vapor lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11348877A JPS5447380A (en) 1977-09-20 1977-09-20 High-pressure sodium vapor lamp

Publications (2)

Publication Number Publication Date
JPS5447380A true JPS5447380A (en) 1979-04-13
JPS5733666B2 JPS5733666B2 (en) 1982-07-19

Family

ID=14613556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11348877A Granted JPS5447380A (en) 1977-09-20 1977-09-20 High-pressure sodium vapor lamp

Country Status (1)

Country Link
JP (1) JPS5447380A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5769658A (en) * 1980-10-17 1982-04-28 Mitsubishi Electric Corp Methal vapor discharge lamp
DE3541211A1 (en) * 1985-05-16 1986-11-20 Ushio Denki K.K., Tokio/Tokyo DC POWER CHARGE LAMP
US6126889A (en) * 1998-02-11 2000-10-03 General Electric Company Process of preparing monolithic seal for sapphire CMH lamp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5769658A (en) * 1980-10-17 1982-04-28 Mitsubishi Electric Corp Methal vapor discharge lamp
DE3541211A1 (en) * 1985-05-16 1986-11-20 Ushio Denki K.K., Tokio/Tokyo DC POWER CHARGE LAMP
US6126889A (en) * 1998-02-11 2000-10-03 General Electric Company Process of preparing monolithic seal for sapphire CMH lamp
US6274982B1 (en) 1998-02-11 2001-08-14 General Electric Company Monolithic seal for sapphire CMH lamp

Also Published As

Publication number Publication date
JPS5733666B2 (en) 1982-07-19

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