Patent ID: 9157599
Filing Date: 2015-10-13
Classification: F21V,F21Y

Abstract:
1. A light emitting diode (LED) lighting system comprising: a housing comprising a transparent substrate as an illuminating side; an LED light source located in the housing; and a haze-changeable film attached to the transparent substrate, wherein the transparency of the haze-changeable film changes depending on the application of electric power, and the haze-changeable film has a haze on light varying with the intensity of an applied voltage or an applied current, wherein a change in a haze of the haze-changeable film is related to a change in one of a voltage and a current applied to the haze-changeable film and a change in a color temperature of the haze-changeable film is related to a change in the other of the voltage and the current applied to the haze-changeable film.