Patent ID: 9612001
Date: 2017-04-04
CPC Classifications: F21V,F21Y,G02B

Claim:
1. A lighting arrangement, comprising at least two light sources arranged in a pattern along a longitudinal axis and adapted to emit light in a first wavelength range and a wavelength converting layer arranged at a distance from the at least two light sources, the wavelength converting layer being arranged to receive light emitted from the at least two light sources and adapted to convert light in the first wavelength range to light in a second wavelength range, characterized by a spectrally selective layer arranged between the at least two light sources and the wavelength converting layer, which spectrally selective layer is adapted to reflect light in the first wavelength range having an angle of incidence smaller than a predefined angle and to transmit light in the first wavelength range having an angle of incidence larger than the predefined angle, wherein the cross section of the spectrally selective layer in a plane perpendicular to the longitudinal axis has substantially the shape of an arc of a circle.