Patent ID: 8723092

Claim:
A light guide device for the introduction of daylight and/or sunlight into the interior of a building having a multitude of movably mounted light deflection surfaces that are adjustable by control means depending on the position of the sun, wherein the light deflection surfaces are formed by serially arranged deflecting blades that may be swiveled about swivel axes that are approximately parallel to each other, the blades being mounted on a blade holder formed by an annular light guide tube portion having a longitudinal axis, the blade holder rotatable about a rotational axis that is essentially perpendicular to the direction of the swivel axes; and wherein the deflecting blades are combined in pairs each having a first and second deflecting blade, wherein a first blade of a pair of first and second blades captures daylight or sunlight respectively guiding it to a second blade of the pair of first and second blades, which will deflect the light coming from the first blade parallel to the longitudinal axis of the light guide tube portion.