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:
Jun. 03, 2003
Filed:
Dec. 13, 2001
Applicant:
Inventors:
Thomas Mehr, Dollenstein, DE;
Ralf Seedorf, Berlin, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 6/106 ;
U.S. Cl.
CPC ...
H01J 6/106 ;
Abstract
In a short-arc high-pressure discharge lamp ( ) with a xenon fill for digital projection purposes, the separation L in mm of the two mutually facing end sections ( ) of the cathode ( ) and the anode ( ) when the lamp is hot is given by the relationship 0.8×P≦L≦1×P+1, where P is the lamp power in kW. Further, the diameter D of the circular-cylindrical middle section ( ) of the anode ( ) in mm obeys the relationship D≧2.1×L+10.