Fluorescence-suppressed quartz glass, and electric lamp with thi

Details Fluorescence-suppressed quartz glass, and electric lamp with thi Fluorescence-suppressed quartz glass, and electric lamp with thi

1996-12-05

1998-09-15

Oen, William L.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

H01J 162, H01J 6304

Patent

active

058084118

ABSTRACT:
To inhibit, or at least sharply attenuate, fluorescence of a quartz-glass velope (10) surrounding a light source (11), such as a halogen incandescent lamp, a high-pressure discharge lamp, or the like, when the quartz glass is subjected to ultraviolet (UV) radiation from the light source, and has been doped with a UV radiation absorbing material, typically a cerium, or cerium-titanium doping, the quartz-glass envelope is additionally doped with barium and boron. The barium/boron in the doping is, preferably, present in quantities of between about 0.008 and 1.25%, by weight, with reference to the undoped quartz glass. Barium metaborate can be used, optionally together with praseodymium to attenuate the fluorescence. Preferably, barium and boron form a combined doping substance with cerium, in form of a cerium aluminate and metaborate, added to the starting material for the quartz glass, and before the quartz glass is fused from quartz sand or pulverized quartz crystal.

REFERENCES:
patent: 1634182 (1927-06-01), Gell et al.
patent: 3527711 (1970-09-01), Barber et al.
patent: 4501993 (1985-02-01), Mueller et al.
patent: 4769292 (1988-09-01), Tang et al.
patent: 5196759 (1993-03-01), Parham et al.
patent: 5231328 (1993-07-01), Hisamune et al.

Affiliated with

Also associated with

Rating

Fluorescence-suppressed quartz glass, and electric lamp with thi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluorescence-suppressed quartz glass, and electric lamp with thi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluorescence-suppressed quartz glass, and electric lamp with thi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-91837