Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Reexamination Certificate
2007-07-03
2007-07-03
Chen, Shih-Chao (Department: 2821)
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
Reexamination Certificate
active
10516150
ABSTRACT:
A low-pressure mercury vapor discharge lamp is provided with a light-transmitting discharge vessel, enclosing, in a gastight manner, a discharge space provided with a filling of mercury and a rare gas. The discharge vessel comprises means for maintaining a discharge in the discharge space. At least a portion of an inner wall of the discharge vessel is provided with a translucent layer which-according to the invention has a thickness in the range from 1 to 50 μm and comprises an alkaline-earth-borate.
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Keur Wilhelmus Cornelis
Snijkers-Hendrickx Ingrid Jozef Maria
Van Hal Henricus Albertus Maria
A Minh Dieu
Chen Shih-Chao
Koninklijke Philips Electronics , N.V.
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