The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2001
Filed:
Feb. 09, 1999
Emmanuel W. J. L. Oomen, Morgantown, NL;
Adrianus J. H. P. Van Der Pol, Eindhoven, NL;
Leonie M. Geerdinck, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
Low-pressure mercury vapour discharge lamp is provided with a discharge vessel (,) and a first and a second end portion (,). The discharge vessel (,) encloses a discharge space (,) provided with a filling of mercury and a rare gas in a gastight manner. Each end portion (,) supports an electrode (,) which is arranged in the discharge space (,). Current supply conductors (,) through the end portions (,) to outside the discharge vessel (,). A UV-reflecting shield (,) is positioned in the space between the electrodes (,) and the end portions (,) from the creation of reactive sites in the end portions (,) at which reactive sites mercury is bound. Preferably, the shield (,) is attached to the current supply conductors (,′). The lamp according to the invention has a comparatively low mercury consumption.