. . . "In the reflector 1 according to the present invention, mentioned as preferable polymer films are the films of various types of plastics, for instance, polyesters such as polyethylene terephthalate (PET) or polyethylene naphthalate; polycarbonates such as bisphenol A based polycarbonate; polyolefins such as polyethylene, polypropylene, cyclic olefin copolymers, or ethylene-vinyl acetate copolymers;" .