Patent ID: 9057881
Filing Date: 2015-06-16
Classification: G02B,H04N

Abstract:
1. An illumination system for a projection apparatus, comprising: at least one light source for generating a light; a curved reflecting component having a breakthrough groove; a phosphor color wheel being disposed in the breakthrough groove, wherein after the light penetrates the phosphor color wheel in a first time sequence, a first light is reflected from the curved reflecting component, and after the light is reflected from the phosphor color wheel in a second time sequence, a second light is reflected from the curved reflecting component; a polarizer for splitting the first light into a first beam having a first polarization direction and a second beam having a second polarization direction in the first time sequence, and splitting the second light into a third beam having the first polarization direction and a fourth beam having the second polarization direction in the second time sequence; and a half wave retarder having a first time sequence portion and a second time sequence portion, and being disposed at a side of the polarizer; wherein after the first beam and the second beam pass through the first time sequence portion of the half wave retarder in the first time sequence, the first beam and the second beam are transformed into a first polarization light having the first polarization direction, and after the third beam and the fourth beam pass through the second time sequence portion of the half wave retarder in the second time sequence, the third beam and the fourth beam are transformed into a second polarization light having the second polarization direction.