Electric lamp and discharge devices – With gas or vapor – Having a particular total or partial pressure
Patent
1997-02-07
1998-09-22
Patel, Ashok
Electric lamp and discharge devices
With gas or vapor
Having a particular total or partial pressure
313 25, 313 27, 313634, H01J 6134
Patent
active
058119337
ABSTRACT:
The invention relates to a high-pressure discharge lamp provided with a discharge vessel which is enclosed with intervening space by an outer bulb with a lamp cap, which lamp also comprises an UV-enhancer having a wall and an internal electrode and arranged in the space between outer bulb and discharge vessel.
According to the invention, the wall of the UV-enhancer is made from ceramic material.
The invention offers the advantage that the lamp ignites reliably at a comparatively low ignition voltage of 3 kV already.
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Bleeker Hendrik M.
Kessels Martinus J.M.
Luijks Gerardus M.J.F.
Van Den Hoek Willem J.
Van Den Nieuwenhuizen Hubertus C.M.
Faller F. Brice
Patel Ashok
U.S. Philips Corporation
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