An optical image projector is provided with: a light source, an optical integrator which converges the light from the light source into a number of secondary light sources, a separator which separates each light ray from the secondary light sources into a plurality of color component rays, an optical image generator which generates a plurality of optical images utilizing separated color component rays, an image combiner which combines the plurality of optical images into a single optical image, and an optical system provided between the optical integrator and the image combiner such that the most intensive light rays strike the image combiner at a predetermined incident angle. The optical system includes a lens whose focal length f1 satisfies: {(D+d)/D}·L≦f1≦{D/(D−d)}·L wherein d denotes an interval between secondary light sources formed in the vicinity of a center optical axis of the optical integrator, D denotes a dimension of an area to be illuminated and, L denotes a distance between the optical integrator and the lens.