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:
Jul. 08, 2014
Filed:
Apr. 10, 2008
Willem Lubertus Ijzerman, Eindhoven, NL;
Michel Cornelis Josephus Marie Vissenberg, Eindhoven, NL;
Leendert Van Der Tempel, Eindhoven, NL;
Florian Cosmin Sabou, Jibou, RO;
Willem Lubertus Ijzerman, Eindhoven, NL;
Michel Cornelis Josephus Marie Vissenberg, Eindhoven, NL;
Leendert Van Der Tempel, Eindhoven, NL;
Florian Cosmin Sabou, Jibou, RO;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
An optical arrangement comprising a light guide () having a light-entry portion () with a light-entry surface (), a tapering portion () with a light reflecting surface, and a light-exit surface (). The light-entry portion () is arranged to guide light from the light-entry surface () in a first direction (x) towards the light reflecting surface (H I), the light reflecting surface being arranged in relation to the first direction (x) so that incident light from the light-entry portion () is reflected towards the light-exit surface (). A light transmitting layer () is adapted to transmit light diffusively and arranged to cover at least a portion of the light-entry edge surface () of the light guide (). The arrangement is e.g. suitable for use in a LED based luminaire and allows for efficiency and forming of a light beam able to fulfill glare requirements. The arrangement may advantageously be used in a downlighting application.