Patent ID: 8875457

Claim:
A portable light manipulator comprising: a frame and a manipulator cloth that is stretched or can be stretched on the frame, and wherein the frame comprises: at least one tension bar, which has at least two moving sections that are movable in a longitudinal direction of the tension bar and are connected to one another, said moving sections being spring-loaded so as to be capable of being forced apart from one another by spring force in the longitudinal direction of the tension bar, and wherein the at least one tension bar is tubular at least in the region in which the two moving sections are connected with each other, and wherein an inner tube or a solid inner cylinder is inserted in an adjacent tube opening of the moving sections that is immovably connected with a first of the moving sections and that is movably connected by means of a preset travel with a second moving section by means of a forcible guide acting in the longitudinal direction of the at least one tension bar, wherein the forcible guide comprises at least one of an oblong hole in the inner tube and the inner cylinder extending in the longitudinal direction of the at least one tension bar and a stud disposed in a stationary manner on the second moving section penetrating through said oblong hole; and wherein a compression spring element is disposed in the second moving section between a stop that is stationary in relation to this second moving section and an end of the inner tube or solid cylinder; and wherein the compression spring element is a coil spring; and wherein the manipulator cloth is a reflector cloth or a diffuser cloth and includes: terminal fasteners which fasten the manipulator cloth to the frame, and wherein the manipulator cloth or the fasteners have an elasticity that pulls, when in an operating position of the light manipulator, the moving sections toward each other.