Intergraph composed of fly eye lens

摘要

The present invention relates to an illumination system integrator using a fly-eye lens. The optical axis of each fly-eye lens is fixed to the optical axis of the integrator so that the center of the partial luminous flux passing through each of the fly-eye lenses in the integrator composed of a plurality of fly-And it is possible to improve the uniformity of the light and reduce the loss of the light amount and to improve the efficiency, as well as to reduce the size of the illumination system and reduce the weight of the illumination system.