Abstract: A concentrating optical member (50) concentrates sunlight (Lsa) onto a solar cell (10) that generates power using a solar cell element (11) mounted on a receiver substrate (20). The concentrating optical member (50) includes a first optical member (51) having a first refractive index that is disposed on the side on which sunlight (Ls) is incident and a second optical member (52) having a second refractive index that is disposed on the side on which the solar cell element (11) is disposed. The first refractive index and the second refractive index have different values. A concentrating solar power generation module (40) includes the solar cell (10) and the concentrating optical member (50).

Abstract: A solar cell (10) according to one embodiment of the present invention includes a concentrating solar cell element (11) that generates power by converting sunlight (Ls) into electricity; and a receiver substrate (20) on which the solar cell element (11) is placed. A covering portion (30) that covers and protects the solar cell element (11) is formed on the receiver substrate (20). The covering portion (30) includes a U-shaped sealing frame (31) that is formed on a surface of the receiver substrate (20), has an opening (31s), and surrounds the periphery of the solar cell element (11) at a position away from the periphery; a light-transmitting covering plate (32) that is bonded to the sealing frame (31) and covers the solar cell element (11); and a resin sealing portion (33) in which a sealing region defined by the sealing frame (31) and the light-transmitting covering plate (32) is filled with sealing resin.