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. 08, 1989
Filed:
Dec. 04, 1987
Leonard C Eijkelenboom, Eindhoven, NL;
Egbertus J Maassen, Eindhoven, NL;
Franciscus A Van Meel, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
Luminaire provided with a bowl-shaped reflector for an elongated light-emitting part of a light source to be arranged substantially on the principal axis of said reflector. The reflector has a reflecting surface composed of elongated facets whose longitudinal sides extend from adjacent the center to the peripheral edge of the reflector. The facets are concavely curved in a cross-section comprising the principal axis and are straight in a plane at right angles to the peripheral axis and constitute a regular polygon, the axis of symmetry of a facet extending in accordance with a curve approaching the shape of a parabola.