Vorrichtung zur Lichtumlenkung mittels Totalreflexion

The device consists of a number of light deflectors which are arranged flat and in parallel to one another and which consist of a body (1) made of transparent material. Each deflector body has a shape of a hollow cylinder which is bisected along its longitudinal axis, the cutting surfaces (S1,S2) of the bisecting cut plane facing the incoming light. Several bisected hollow cylinder bodies with different cylinder radii may be stacked concentrically one in the other, so that the light deflecting components have approximately the shape of a half full cylinder. The inner and outer (r,R) radii of the hollow cylinder and the refraction index of the transparent material in relation to the refraction index of the material surrounding the transparent material are selected; so that incoming light is deflected by multiple total reflection on the inner and outer cover surface of the bisected hollow cylinder to the other bisecting cut surface. USE - Mainly for buildings with large glass areas. ADVA NTAGE - Incoming light is totally reflected backwards within specific predetermined angle area, with total reflecting area being enlargeable and adjustable within wide limits.