Patent ID: 9696014
Date: 2017-07-04
CPC Classifications: B60Q,F21S,F21V,G02B,G02F,Y10T

Claim:
1. A radiation emitting element comprising: a radiation transmissive element having a first refractive index, a first surface and a second, opposite surface; a radiation emitter configured to emit radiation of a first wavelength into the radiation transmissive element; and a plurality of radiation controlling elements, each radiation controlling element including, in a first mode, the first liquid being in contact with the first surface at the first surface part, and an interface between the first liquid and the second fluid, at the first surface part, is not parallel to the first surface part, and in a second mode, a surface of the second fluid, at the first surface part, is at least substantially parallel to the first surface part, and at least part of the first liquid overlaps the covering element; wherein each radiation controlling element is covered by an optical element being arranged for directing radiation toward a specific angle and wherein the altering means is arranged to control radiation passing through each radiation controlling element.