Illumination device and projector

Abstract

An illumination device includes a light source device, a first collimate optical system on which a light beam emitted from the light source device is made incident, a condensing optical system provided at a post-stage of the first collimate optical system, a rod provided at a post-stage of the condensing optical system, a second collimate optical system provided at a post-stage of the rod, a lens integrator provided at a post-stage of the second collimate optical system, and a superimposing lens provided at a post-stage of the lens integrator. The lens integrator includes a first lens array and a second lens array provided at a post-stage of the first lens array. A light-emitting end face of the rod and a lens surface of the second lens array are substantially conjugate with each other.

Dependencies are inferred from the claim text.