Electric lamp and discharge devices – With gas or vapor – With particular gas or vapor
Patent
1996-08-01
1997-12-02
Horabik, Michael
Electric lamp and discharge devices
With gas or vapor
With particular gas or vapor
313571, 313 25, H01J 6122
Patent
active
056940025
ABSTRACT:
A highly efficient discharge lamp has a color rendering index of about 85, a lumens per watt rating of about than 90, a correlated color temperature of 3000.degree. K., and a wall loading of about 21 W/cm.sup.2. The lamp has an outer glass envelope and a pair of electrical conductors extending into the interior of the glass envelope; a quartz discharge tube disposed within the outer envelope and including a pair of spaced electrodes which are electrically connected to the electrical conductors for creating an electrical discharge during operation of the lamp, the discharge tube having an arc chamber. An arc generating and sustaining medium is provided within the arc chamber and includes the halides of sodium, scandium, lithium, dysprosium and thallium, a fill gas selected from argon and xenon, and a given quantity of mercury to achieve a desired lamp voltage. In a preferred embodiment of the invention the halides are iodides and are present in the mole ratio of about 24-44:1:9.5:>3<4, while the thallium is present in an amount of about 0.35 to 0.45 mg/cm.sup.3 of arc tube volume.
REFERENCES:
patent: 4557700 (1985-12-01), Rothwell, Jr. et al.
patent: 4581557 (1986-04-01), Johnson
patent: 5013968 (1991-05-01), Russell et al.
patent: 5057743 (1991-10-01), Krasko et al.
patent: 5144201 (1992-09-01), Graham et al.
patent: 5363007 (1994-11-01), Fromm et al.
Brates Nanu
Krasko Zeya K.
Day Michael
Horabik Michael
McNeill William H.
Osram Sylvania Inc.
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