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:
Dec. 20, 1988
Filed:
Oct. 29, 1981
Applicant:
Inventor:
Peter Walsh, Stirling, NJ (US);
Assignee:
Duro-Test Corporation, North Bergen, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01K / ; H01K / ;
U.S. Cl.
CPC ...
313113 ; 313635 ;
Abstract
A high-pressure mercury vapor lamp uses an envelope with an elliptical region which is coated on its interior surface. The coating reflects energy in the violet and passes energy in the green and yellow-green. By suppressing electron transitions which yield violet radiation, transitions which yield green and yellow-green radiation are enhanced, increasing lumen output by redistributing energy to more luminous lines in the line spectrum of mercury vapor plasma.