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. 18, 2000
Filed:
Mar. 12, 1998
Applicant:
Inventors:
Andreas Genz, Berlin, DE;
Frank Werner, Berlin, DE;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313639 ; 313573 ; 313640 ;
Abstract
The metal-halide direct-current arc discharge lamp has a fill system which as cadmium and/or zinc as components of the central fill in addition to an ignition gas, mercury, and a halogen. Preferably, the fill is retained in a bulb (10) which is asymmetrical with respect to a central plane (1) perpendicular to a longitudinal axis (2) of the lamp. The lamp is particularly suitable for use in combination with an optical projection system (R), especially when operating in horizontal position.