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:
Jan. 09, 2018
Filed:
Jun. 08, 2015
Philips Lighting Holding B.v., Eindhoven, NL;
Wouter Oepts, Eindhoven, NL;
Lucas Josef Maria Schlangen, Eindhoven, NL;
Raimond Louis Dumoulin, Eindhoven, NL;
Wiebe Wagemans, Eindhoven, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
A light emitting arrangement is adapted to produce white output light of a total luminous intensity Itot and having an emission peak in the wavelength range of from 400 to 440 nm, comprising: a first light emitting element adapted to emit light of a first luminous intensity Iand having an emission peak in a first wavelength range of from 440 to 460 nm; and a second light emitting element adapted to emit light of a second luminous intensity Iand having an emission peak in a second wavelength range of from 380 to 440 nm, wherein the first light emitting element and the second light emitting element are independently controllable such that Ican be adjusted independently of I. The possibility of controlling the contribution of deep blue light allows a natural appearance of a crisp white light source at all emission intensities, and may also be used to enhance perception of contrast.