Fly-eye lens device and illumination device including the fly-eye lens device

摘要

In a fly-eye lens device according to the present invention, a fly-eye lens supported by supporting means is formed by two-dimensionally arranging plural types of fly-eye constituent lenses of unequal size. In the arrangement, the plural types of the fly-eye constituent lenses are disposed in order of ascending size from the center of the fly-eye lens toward the periphery thereof. A lighting system according to the present invention is equipped with the fly-eye constituent lenses. In the lighting system, light emanating from a light source passes through first optical means and impinges on the fly-eye constituent lenses. The light, after passing through a stop, is directed through second optical means to an object to be illuminated. The present invention can ensure the predetermined number of fly-eye constituent lenses which contribute to uniformity of illumination, and achieve uniform illumination at low cost.