Patent ID: 7872219
Filing Date: 2011-01-18
Classification: G03B

Abstract:
1. An illumination device comprising a light source, a first integrator into which light from the light source enters, and a second integrator into which light exiting from the first integrator enters, wherein the light source comprises: a first light source emitting light of a first color, a second light source emitting light of a second color, and a third light source emitting light of a third color; and the first integrator comprises: a first integrator for the first light source into which light from the first light source enters, a first integrator for the second light source into which light from the second light source enters, and a first integrator for the third light source into which light from the third light source enters, the device further comprising: a first optical thin film that synthesizes light of the first color and light in which light of the second color and light of the third color are color-synthesized, and a second optical thin film that synthesizes light of the second color and light of the third color, wherein light synthesized by the first optical thin film enters the second integrator.