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:
Oct. 11, 2016
Filed:
May. 14, 2013
Koninklijke Philips Electronics N.v., Eindhoven, NL;
Tim Corneel Wilhelmus Schenk, Eindhoven, NL;
Lorenzo Feri, Eindhoven, NL;
Hendricus Theodorus Gerardus Maria Penning De Vries, Mierlo, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A direction controllable lighting unitfor use in a lighting system is described. The light emission of the lighting unitmay be directed into different directions, e.g. by use of a mechanically movable element. At least two ultrasound transmitters, or ultrasound receiversare disposed at the lighting unitsuch that they differ in position, or in direction or shape of the spatial intensity distribution or spatial distribution of reception sensitivity. A mobile control elementhas at least one corresponding ultrasound transmitter or receiver. A difference bebveen a signal from a transmitter received at multiple receivers, or a signal of multiple transmitters received at a single receiver is used to determine a relative direction of the direction controllable lighting unitand the control element, and to control the direction of the lighting unitin dependence thereof.