Patent ID: 8979327
Filing Date: 2015-03-17
Classification: F21V,F21W,G02B

Abstract:
1. A spotlight comprising: a housing for accommodating a light source and a Frensel step lens, wherein through the Fresnel step lens light emitted by the light source leaves the housing when the light source is accommodated in the housing, wherein the Fresnel step lens has a center and an outer rim, wherein the Fresnel step lens has at least one spiral on a first side which forms a plurality of spiral steps and which begins towards said center and extends outwardly towards said outer rim and wherein flank regions between adjacent individual steps of said plurality of spiral steps increase in size in a radial direction from said center towards said outer rim, and wherein the Fresnel step lens has a second side facing the light source, said second side is opposite the first side, and wherein the spotlight is configured for at least partially illuminating a stage.