Concentrating photovoltaic module and concentrating photovoltaic power generating system

摘要

A concentrating photovoltaic module comprising: a lightguide member having at least one exit face and a plurality of entrance faces; and at least one solar cell placed immediately after the exit face of the lightguide member; wherein the lightguide member is comprised of a light transmissive, solid medium having no refractive-index-discontinuity portion and a surface of the lightguide member is smooth and wherein the lightguide member makes sunbeams incident on the plurality of entrance faces, totally reflected on side faces, and emergent from the exit face, whereby the sunbeams can be concentrated on the solar cell with high efficiency.