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:
Nov. 28, 2017
Filed:
Apr. 20, 2012
Dagnachew Birru, Yorktown Heights, NY (US);
Eduard Johannes Meijer, Eindhoven, NL;
Dagnachew Birru, Yorktown Heights, NY (US);
Eduard Johannes Meijer, Eindhoven, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
An electric light and external light control system for a space with a dual-mode light sensor is proposed. The dual-mode light sensor () measures and computes the amount of external light and electrical light incident on its sensing surface. The individual measured light components (total light, electric light and external light) are transmitted to the window treatment controller () and the electric light controller (). The controllers () use this information to optimally control the lighting condition to meet user requirements and reduce energy consumption. Both controllers () operate concurrently and independently, but are linked via the dual-mode sensor ().