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:
Aug. 02, 1977
Filed:
Oct. 06, 1976
Applicant:
Inventors:
Leonard Cornelis Eijkelenboom, Eindhoven, NL;
Jan Antoon Kesseler, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01K / ;
U.S. Cl.
CPC ...
313113 ; 313112 ; 350290 ; 350294 ;
Abstract
Electric reflector lamps having an ellipse-like curved reflector and a hyperbola-like curved IR reflector having a higher efficiency if not only the foci of both reflectors coincide and the high source is arranged on the coinciding foci present within the space enclosed by the reflectors, but the relationship a.sub.h = f .times. c.sup.2 /a.sub.e also applies, where f is a factor dependent on the eccentricity of the ellipse.