Patent ID: 7198376

Claim:
A lighting optical unit including an optical system having first and second fly-eye lenses for uniformly irradiating light from a light-source lamp on a predetermined object, the lighting optical unit comprising: a reflector for reflecting light from said light-source lamp to provide converged light; and an optical assembly for diverging said converged light, wherein diverged light with respect to an optical axis of the optical unit from said optical assembly is made to enter said optical system and a vertex position of a lens cell of said first fly-eye lens is deviated from a center of an opening of said lens cell such that the vertex position of the lens cell is eccentric with respect to the optical axis of the optical unit so as to correct a direction of the light from said optical assembly being approximately parallel to the optical axis of the optical unit and the approximately parallel light from the lens cell of the first fly-eye lens is made to enter corresponding lens cell of the second fly-eye lens.