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:
Feb. 09, 2010
Filed:
Apr. 11, 2003
Denis Joseph Carel Van Oers, Eindhoven, NL;
Jelle Hilbrand Schuurmans, Eindhoven, NL;
Denis Joseph Carel Van Oers, Eindhoven, NL;
Jelle Hilbrand Schuurmans, Eindhoven, NL;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
The invention relates to a lighting unit () having a concave reflector () with an axis of symmetry () and a light emission window () bounded by a circumferential edge () transverse to the axis, an elongate light source () extending substantially along the axis of symmetry (), which light source () is accommodated in a holder () opposite the light emission window (), and a cup-shaped axially positioned cap (), which cap partly surrounds the light source and forms an optical screening means to intercept unreflected light rays. According to the invention, the cap () is surrounded at a distance d by a screening ring (), which extends over a height h in the direction of the light emission window ().