Patent ID: 7863555

Claim:
An illumination apparatus comprising: a first solid-state light source configured to emit a light beam having a first directivity; a second solid-state light source configured to emit a light beam having a second directivity greater than the first directivity; a first arrangement member provided with a first arrangement surface on which the first light source is arranged; a second arrangement member provided with a second arrangement surface on which the second light source is arranged; and an optical unit configured to reduce a dispersion angle of the light beam emitted from the first solid-state light source and the light beam emitted from the second solid-state light source, wherein a wave length of the light beam emitted from the first solid-state light source is different from a wave length of the light beam emitted from the second solid-state light source, the optical unit is provided with a first light-entering surface on which the light beam emitted from the first solid-state light source is irradiated, and a second light-entering surface on which the light beam emitted from the second solid-state light source is irradiated, the first arrangement surface faces the first light-entering surface, and the second arrangement surface faces the second light-entering surface, and a distance from the second arrangement surface to the second light-entering surface is longer than a distance from the first arrangement surface to the first light-entering surface.