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:
Jan. 11, 1994
Filed:
Jun. 09, 1992
Applicant:
Inventors:
Jaak M Geboers, Aachen, DE;
Manfred Kiesling, Oirsbeek, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362348 ; 362 16 ; 362255 ; 362346 ;
Abstract
The illumination device comprises a housing, a lampholder, a reflector and an electric lamp having a base rigidly connected to its light-diffusing lamp vessel. A light source within the lamp vessel is disposed substantially coaxially with an optical axis of the reflector. The reflector is polygonal in cross sections transverse to its axis and shapes the light generated into a beam, the intensity of which increases from I.sub.o along the optical axis to a value of 105 to 130% thereof at an angle of 5 to 25% to the axis. Scenes illuminated by the device yield evenly exposed photo, film and video images.