FRESNEL LENS - LIGHT PIPE COMBINED LENS SYSTEM FOR SOLAR POWER GENERATION

摘要

PURPOSE: A Fresnel lens which represents light guide complex-type condensing lens for photovoltaic is provided to reduce a manufacturing cost of a system by drastically extending a tolerance range of an oriented error in which 0.1 is given. CONSTITUTION: A solar cell (140) is arranged in the center of a condensing lens module (110). Multiple condensing lens units are arranged to have circular symmetry around the solar cell in the condensing lens module. The condensing lens unit comprises a Fresnel lens (120) and a light guide plate (130) which is arranged in the lower part of the Fresnel lens. A unit condensing lens part is formed with a pattern of concentric circle around the edge surface in the upper side of the Fresnel lens. The upper side of the light guide plate is formed in order to combine with the lower side of the Fresnel lens by corresponding thereof.