Patent ID: 8579474
Filing Date: 2013-11-12
Classification: F21V,G03B

Abstract:
1. A reflector having a reflective surface, wherein the contour of the reflective surface is traversed by a rational quadratic Bézier curve, wherein said reflector is embodied for a discharge lamp having two electrodes at a spacing d specified in millimeters, wherein it holds for a point on the Bézier curve having the coordinates x(t) and z(t), where tε[0,1]; wherein w is between 0.25 and 0.5 and preferably between 0.3 and 0.43, and wherein x0=d·x00, x1=d·x10, x2=d·x20, z0=d·z00, z1=d·z10, z2=d·z20, where x00 is between 4 and 10 mm, x10 is between 20 and 42, x20 is between 12 and 24 mm, z00 is between −0.5 and +0.5 mm, z20 is between 30 and 112, and z10=c·z20, where c is between 0.22 and 0.67.