An optical device capable of homogenizing luminous energy and homogenizing
polarized light simultaneously, and an optical illumination system of a
projector having decreased volume by using the optical device for
homogenizing luminous energy and polarized light has small volume, but is
able to homogenize luminous energy and transform non-polarized light a
polarized light simultaneously. It is possible to attain homogeneous
luminous energy and light efficiency improvement on a level, which are
equal to those attained by using conventional Fly eye lens and PBS array,
by using the above-described optical device for homogenizing luminous
energy and polarized and the volume of the optical system can be decreased
and be lightweight.
