A light source device, the maintenance of the solar simulator and a light source device METHOD

A light source device (10) according to the present invention comprises a first light source (1), and a first optical condensing member (2) having a first opening (24) and emits the light emitted from the first light source from the first opening (24). The first optical condensing member (2) is composed of a front optical condensing member (2a) including the first opening (24) and a rear optical condensing member (2b) not including the first opening (24). The rear optical condensing member (2b) is configured so as to be detachable from the first optical condensing member (2).