JPS5553054A - High pressure sodium lamp - Google Patents

High pressure sodium lamp

Info

Publication number
JPS5553054A
JPS5553054A JP12641478A JP12641478A JPS5553054A JP S5553054 A JPS5553054 A JP S5553054A JP 12641478 A JP12641478 A JP 12641478A JP 12641478 A JP12641478 A JP 12641478A JP S5553054 A JPS5553054 A JP S5553054A
Authority
JP
Japan
Prior art keywords
luminous tube
tube
high pressure
luminous
pressure sodium
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
JP12641478A
Other languages
Japanese (ja)
Inventor
Yuji Danno
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 JP12641478A priority Critical patent/JPS5553054A/en
Publication of JPS5553054A publication Critical patent/JPS5553054A/en
Pending legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To increase the efficiency by improving the transmission of a luminous tube, by means of polishing the inner and outer surfaces of the luminous tube chemically, and of making the thickness of the wall surface of the luminous tube into a prescribed range.
CONSTITUTION: A base 2 is set up at the end part of an outer tube 1 made of a hard glass. A luminous tube 3 is contained in the outer tube 1. The luminous tube 3 is formed out of a photo-transmitting alumina-ceramic material, and surface thereof is smoothly formed by means of being processed a chemical polishing on the inner and outer surface of the wall surface. The thickness of the tube wall of this luminous tube 3 is formed so as to be above 0.3mm and be below 0.6mm. Subscribed quantities of Sodium, Mercury and a starting rare gas are sealed in the luminous tube 3.
COPYRIGHT: (C)1980,JPO&Japio
JP12641478A 1978-10-14 1978-10-14 High pressure sodium lamp Pending JPS5553054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12641478A JPS5553054A (en) 1978-10-14 1978-10-14 High pressure sodium lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12641478A JPS5553054A (en) 1978-10-14 1978-10-14 High pressure sodium lamp

Publications (1)

Publication Number Publication Date
JPS5553054A true JPS5553054A (en) 1980-04-18

Family

ID=14934567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12641478A Pending JPS5553054A (en) 1978-10-14 1978-10-14 High pressure sodium lamp

Country Status (1)

Country Link
JP (1) JPS5553054A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755056A (en) * 1980-08-21 1982-04-01 Philips Nv High pressure sodium vapor discharge lamp
JPS59184450A (en) * 1983-04-01 1984-10-19 Toshiba Ceramics Co Ltd Light-transmitting alumina tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755056A (en) * 1980-08-21 1982-04-01 Philips Nv High pressure sodium vapor discharge lamp
JPS59184450A (en) * 1983-04-01 1984-10-19 Toshiba Ceramics Co Ltd Light-transmitting alumina tube

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