Patent ID: 7220004
Filing Date: 2007-05-22
Classification: G03B

Abstract:
1. A projector comprising: light source optical systems for respective colors collecting light source beams of the respective colors from light sources of the respective colors, respectively, and causing the beams to enter predetermined positions provided with respect to each color, at least one light source of the respective colors having a different number of light-emitting members from the other light sources of the respective colors; rod integrators for the respective colors having input ends of the respective colors disposed in the predetermined positions with respect to each color, respectively, and independently making the light source beams of the respective colors that have entered the input ends of the respective colors uniform and outputting the beams as illumination light independently from the output ends, respectively, at least one rod integrator of the respective colors having a different length than the other rod integrators of the respective colors; light transmissive type optical modulator units for the respective colors each including a main body part having a cross-section greater than the output end of a respective rod integrator and an effective pixel region extending across a portion of and centrally located on the main body part, each of the effective pixel regions having substantially the same shapes and sizes as the output ends of the rod integrators for the respective colors and disposed so as to be opposed to the output ends of the respective colors; a light composition optical system for combining image light of the respective colors that has been modulated by the optical modulator units of the respective colors, respectively and outputting the light; and a projection optical system for projecting the combined image light through the light composition optical system.