Light irradiation apparatus, pseudo-sunlight irradiation apparatus and solar panel inspection apparatus

A pseudo-sunlight irradiation apparatus comprising a plurality of sets provided therein of :

• a first light irradiation apparatus comprising:
• a first light source;
• a first light guiding member for taking output light from the first light source into one end surface and outputting the light with increased directivity from another end surface thereof ;
• and a first optical filter for adjusting a spectrum of the light output from the other end surface of the first light guiding member;
• a second light irradiation apparatus comprising:
• a second light source;
• a second light guiding member for taking output light from the second light source into one end surface and outputting the light with increased directivity from another end surface thereof ;
• and a second optical filter for adjusting a spectrum of the light output from the other end surface of the second light guiding member;
• and
• a third light irradiation apparatus comprising:
• a light mixing member for mixing light from the first light irradiation apparatus and light from the second light irradiation apparatus to obtain pseudo-sunlight similar to sunlight;
• and a third light guiding member for taking the pseudo-sunlight from the light mixing member, into one end surface, allowing the pseudo-sunlight to propagate through the inside thereof and emitting light with high directivity onto an irradiation subject from a flat surface thereof uniformly as area irradiation,
• wherein the first light guiding members all together are arrayed adjacently and the second light guiding members all together are arrayed adjacently, and wherein a light shielding member is placed in between the adjacent first light guiding members and/or the adjacent second light guiding members.