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. 25, 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 ...
313634 ; 313493 ;
Abstract
The metal-halide direct-current short-arc discharge lamp has a bulb (10) ch is asymmetrical with respect to a plane (1) perpendicular to a longitudinal axis (2) of the lamp, the bulb having an inner wall which is wider in the region surrounding the anode (4) of the lamp than in the region surrounding the cathode (5). Preferably, the lamp retains a fill system which includes cadmium and/or zinc. The lamp is particularly suitable for use in combination with an optical projection system (R), and especially when operating in horizontal position.