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EP0125062A3 - Lamp envelope with improved resistance to solarization and lamps made therefrom - Google Patents

Lamp envelope with improved resistance to solarization and lamps made therefrom Download PDF

Info

Publication number
EP0125062A3
EP0125062A3 EP84302721A EP84302721A EP0125062A3 EP 0125062 A3 EP0125062 A3 EP 0125062A3 EP 84302721 A EP84302721 A EP 84302721A EP 84302721 A EP84302721 A EP 84302721A EP 0125062 A3 EP0125062 A3 EP 0125062A3
Authority
EP
European Patent Office
Prior art keywords
solarization
lamp envelope
lamps made
made therefrom
improved resistance
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.)
Withdrawn
Application number
EP84302721A
Other languages
German (de)
French (fr)
Other versions
EP0125062A2 (en
Inventor
Paulette I.K. Onorato
Michael N. Alexander
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.)
Verizon Laboratories Inc
Original Assignee
GTE Laboratories Inc
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 GTE Laboratories Inc filed Critical GTE Laboratories Inc
Publication of EP0125062A2 publication Critical patent/EP0125062A2/en
Publication of EP0125062A3 publication Critical patent/EP0125062A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/302—Vessels; Containers characterised by the material of the vessel

Landscapes

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

Abstract

A lamp envelope is fabricated from a soda lime silicate glass containing an effective amount of cerium oxide or a compound thermally decomposable to cerium oxide at temp­ eratures below about 1450°C to inhibit solarization of the glass under the influence of ultraviolet radiation having a wavelength equal to or less than 254 nanometers and lamps made from same.
EP84302721A 1983-04-22 1984-04-19 Lamp envelope with improved resistance to solarization and lamps made therefrom Withdrawn EP0125062A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48778383A 1983-04-22 1983-04-22
US487783 1983-04-22

Publications (2)

Publication Number Publication Date
EP0125062A2 EP0125062A2 (en) 1984-11-14
EP0125062A3 true EP0125062A3 (en) 1985-11-06

Family

ID=23937103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84302721A Withdrawn EP0125062A3 (en) 1983-04-22 1984-04-19 Lamp envelope with improved resistance to solarization and lamps made therefrom

Country Status (1)

Country Link
EP (1) EP0125062A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3938038B2 (en) * 2002-12-18 2007-06-27 ウシオ電機株式会社 Short arc type discharge lamp

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094641A (en) * 1960-04-27 1963-06-18 Sylvania Electric Prod Fluorescent lamp
US3148300A (en) * 1961-08-04 1964-09-08 Gen Electric Lamp having envelope of glass opaque to ultraviolet radiation
GB2057422A (en) * 1979-09-03 1981-04-01 Philips Nv Glass compositions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094641A (en) * 1960-04-27 1963-06-18 Sylvania Electric Prod Fluorescent lamp
US3148300A (en) * 1961-08-04 1964-09-08 Gen Electric Lamp having envelope of glass opaque to ultraviolet radiation
GB2057422A (en) * 1979-09-03 1981-04-01 Philips Nv Glass compositions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
THE GLASS INDUSTRY, vol. 44, no. 5, May 1963, pages 257-259, 298-299; H.E. SIMPSON: "Properties of some glasses containing cerium dioxide" *

Also Published As

Publication number Publication date
EP0125062A2 (en) 1984-11-14

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840517

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19860304

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ONORATO, PAULETTE I.K.

Inventor name: ALEXANDER, MICHAEL N.