Patent ID: 9046745
Filing Date: 2015-06-02
Classification: G02B,G02F,G03B,H04N

Abstract:
1. An illumination system, comprising: a polarized light source emitting a polarized light beam with a first color; a polarization switching element disposed on a transmission path of the polarized light beam and switching a polarized direction of the polarized light beam to one of a first polarized direction and a second polarized direction at different time points; a beam splitting element disposed on the transmission path of the polarized light beam and splitting the polarized light beam having the first polarized direction and the polarized light beam having the second polarized direction; a wavelength conversion element converting the polarized light beam having the first polarized direction from the beam splitting element to a converted light beam with a second color; a reflective element reflecting the polarized light beam having the second polarized direction from the beam splitting element to form a reflected light beam; and a wave plate disposed on a transmission path of the polarized light beam having the second polarized direction and a transmission path of the reflected light beam, and located between the beam splitting element and the reflective element, wherein the beam splitting element combines the converted light beam and the reflected light beam from the wave plate.