Patent ID: 8157397
Filing Date: 2012-04-17
Classification: F21V,F21W,G02B,G03B

Abstract:
1. A foldable reflector screen, comprising: a flexible, cloth-like reflective element having an inside and an outside; a supporting and tensioning structure arranged to support the reflective element on the outside; a carrier element including at least one lamp and mounting the supporting and tensioning structure; and a further tensioning device adapted and arranged so that one of the reflective sections is subjected to an additional tensioning force; wherein the reflector screen has an open state in which the reflective element forms an essentially rotationally symmetrical body having an axis of rotation and has a light outlet opening, and wherein the reflective element comprises at least two reflective sections, the two reflective sections having in each case a different geometrical shape in a section containing the axis of rotation of the reflective element, wherein one of the reflective sections in the open state of the reflector screen corresponds to an ellipse in section, and the other one of the reflective sections corresponds to a parabola in section, and wherein the supporting and tensioning structure includes screen spokes that abut closely against the reflective element in a region of the elliptical reflective section, and in a region of the parabolic reflective section run at a distance from the parabolic reflective section.