camera blitzlichteinheit kondensorlinse element equipped with a tir (total internal reflection surface)

摘要

A camera flash unit 100 for illumination of an associated target surface 25 comprises a linearly symmetric flash light source providing light defined as light rays, a reflector directing the light rays from the flash light source towards the associated target surface 25 and a refractive/TIR (Totally Internally Reflective) condenser lens element 130. The reflector 102 is located adjacent to one side of the flash light source. The refractive/TIR condenser lens element 130 has optical power in two orthogonal directions and is located adjacent to another side of the flash light source. The refractive/TIR condenser lens element 130 has two surfaces - a back surface facing the light source and a front surface. One of the two surfaces is a hybrid refractive/TIR surface, the other of the two surfaces is a refractive surface. IMAGE