Patent ID: 9115862
Filing Date: 2015-08-25
Classification: A61B,F21V,G02B

Abstract:
1. A light source unit comprising a pump light source for an emission of pump light, a phosphor element for a conversion of said pump light into converted light for further use, which phosphor element comprises at least two phosphor element sections interacting differently with said pump light and being suitably arranged for an irradiation in at least one of a simultaneous and a selective manner by said pump light, and a deflecting unit for deflecting at least a part of said pump light for varying said irradiation by altering a distribution of said pump light incident on said phosphor element with respect to said phosphor element sections in order to vary spectral properties of said converted light, wherein said deflecting unit comprises a lens system for deflecting at least a part of said pump light intended for incidence onto said phosphor element, wherein said lens system comprises an axicon lens for generating an annular profile shape in a beam of said deflected pump light.