Ceramic arc tube with internal ridge

Details Ceramic arc tube with internal ridge Ceramic arc tube with internal ridge

2006-04-25

2006-04-25

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

C313S609000, C313S610000

Reexamination Certificate

active

07034461

ABSTRACT:
A ceramic arc tube for a metal halide discharge lamp is described wherein the lower end well of the arc tube has an internal barrier ridge which substantially prevents migration of the metal halide condensate into the central region of the discharge chamber during vertical operation. The use of the ridge reduces fluctuation in the color temperature of vertically operated lamps and improves efficacy.

REFERENCES:
patent: 1933329 (1933-10-01), Hull
patent: 2116429 (1938-05-01), Gooskens
patent: 5866982 (1999-02-01), Scott et al.
patent: 5936351 (1999-08-01), Lang
patent: 6583563 (2003-06-01), Venkataramani et al.
patent: 6646380 (2003-11-01), Kubon et al.

Affiliated with

Also associated with

Rating

Ceramic arc tube with internal ridge does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ceramic arc tube with internal ridge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceramic arc tube with internal ridge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3539670