Patent ID: 9104094
Filing Date: 2015-08-11
Classification: F21V,G02B,G03B,H04N

Abstract:
1. An illumination system configured to illuminate an illuminated area, the illumination system comprising: a first light source that emits a first illumination light flux and a second light source that emits a second illumination light flux; a first lens array having a plurality of first small lenses arranged therein, each of the first illumination light flux and the second illumination light flux being directed toward the first lens array in a substantially parallelized light direction, the first small lenses dividing the first illumination light flux into a plurality of first segmental light fluxes and dividing the second illumination light flux into a plurality of second segmental light fluxes; a second lens array having a plurality of second small lenses arranged therein, the second small lenses having a one-to-one correspondence with the first small lenses, each of the first small lenses and each of the second small lenses having the same length and width in arrangement directions of the first small lenses and of the second small lenses, each of the second small lenses receiving a first segmental light flux at a first location from a corresponding one of the first lenses and a second segmental light flux at a second location from the corresponding one of the first lenses, the first location and the second location being disposed adjacent to each other in a first direction that is the same as an arrangement direction of the second small lenses; and a superimposing lens that superimposes on the illuminated area the first segmental light fluxes and the second segmental light fluxes exiting from the plurality of second small lenses, wherein: