Metal halide high pressure discharge lamp

Details Metal halide high pressure discharge lamp Metal halide high pressure discharge lamp

1997-10-14

1999-07-27

Patel, Nimeshkumar D.

Electric lamp and discharge devices

With gas or vapor

Having a particular total or partial pressure

313639, 313640, 313641, H01J 6112, H01J 6182

Patent

active

059295635

ABSTRACT:
A metal-halide high-pressure discharge lamp (1) with a discharge vessel (2) nd two electrodes (4, 5) has inside discharge vessel (2) an ionizable filling, which contains yttrium (Y) in addition to inert gas, mercury, halogen, thallium (Tl), hafnium (Hf), whereby hafnium can be replaced wholly or partially by zirconium (Zr), dysprosium (Dy) and/or gadolinium (Gd) as well as, optionally, cesium (Cs). Preferably, the previously conventional quantity of the rare-earth metal is partially replaced by a molar equivalent quantity of yttrium. With this filling system, a relatively small tendency toward devitrification is obtained even with high specific arc powers of more than 120 W per mm of arc length or with high wall loads. Thus, the filling quantity of cesium can be clearly reduced relative to a comparable filling without yttrium, whereby an increase in the light flux and particularly in the brightness can be achieved.

REFERENCES:
patent: 3514659 (1970-05-01), Gungle et al.
patent: 3852630 (1974-12-01), Wesselink et al.
patent: 5698948 (1997-12-01), Caruso
Patent Abstracts of Japan, No. 55037701.

Affiliated with

Also associated with

Rating

Metal halide high pressure discharge lamp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metal halide high pressure discharge lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal halide high pressure discharge lamp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-882376