OPTICAL ELEMENT Russian patent published in 2015 - IPC F21V5/04 

FIELD: physics.

SUBSTANCE: optical element in the form of an optically transparent solid body, having a cup shape which expands from the bottom upwards, having side walls, a lower base for inputting light beams from a radiation source, as well as an upper base having a ring shape in the cross-sectional plane, wherein the outer surface of the side walls is a surface which provides total internal reflection for incident light beams; according to the invention the inner surface of the side walls of the optical element is a surface which provides total internal reflection for incident light beams, wherein the shape of the side walls in the longitudinal section and thickness thereof are selected based on the condition of providing reflection of light beams incident on the outer and inner surface thereof, said beams being input into the optical element from the radiation source and reflected by said surfaces at an angle corresponding to the critical angle.

EFFECT: obtaining different beam patterns of optical radiation.

5 dwg