Patent ID: 9470965
Filing Date: 2016-10-18
CPC Classification: G03B

Claim Text:
1. A projection system, comprising: a projection lens, configured to project an image light; an image modulation device, comprising a panel width and configured to form the image light; a light-guiding rod, configured to receive and homogenize a plurality of lights, the light-guiding rod being defined with an axial direction and comprising a first end and a second end, the first end comprising a transmission surface and a first reflection surface formed on a first side of the transmission surface, a normal direction of the first reflection surface and the axial direction having a first angle formed therebetween, the transmission surface substantially being perpendicular to the axial direction, the first reflection surface comprising a first width, the transmission surface comprising a second width, both of a ratio of the first width to the panel width and a ratio of the second width to the panel width being from 0.13 to 0.35; a first light source, configured to emit a first light, the first light being emitted into the light-guiding rod through the transmission surface; and a second light source, configured to emit a second light, the second light being incident onto a first side surface of the light-guiding rod and reflected into the light-guiding rod through the first reflection surface, wherein the first light and the second light are homogenized by the light-guiding rod and transmitted to the image modulation device through the second end, and the projection lens projects the image light formed by the image modulation device.