Title:
Low-pressure gas discharge lamp comprising a uv-b phosphor
Document Type and Number:
WIPO Patent Application WO2005124825
Kind Code:
A8
Abstract:
The invention relates to a low-pressure gas discharge lamp provided with a gas discharge vessel comprising a gas filling with a discharge-maintaining composition, wherein at least part of a wall of the discharge vessel is provided with a luminescent material comprising a first UV-B phosphor containing, in a host lattice, gadolinium(III) as an activator and praseodymium(III) as a sensitizer, which lowpressure gas discharge lamp is further provided with means for generating and maintaining a low-pressure gas discharge Such a lamp is particularly useful for narrow-band UV-B phototherapy. The invention also relates to a UV-B phosphor containing, in a host lattice, gadolinium(III) as an activator and praseodymium(III) as a sensitizer.
Inventors:
JUESTEL THOMAS (DE)
MAYR WALTER (DE)
MASTENBROEK OLAF (NL)
MAYR WALTER (DE)
MASTENBROEK OLAF (NL)
Application Number:
PCT/IB2005/051918
Publication Date:
June 29, 2006
Filing Date:
June 10, 2005
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
International Classes:
C09K11/77; H01J1/02; H01J1/62; H01J61/44; H01J61/72; H01J65/04; H01K9/00
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