Patent ID: 8251519
Filing Date: 2012-08-28
Classification: G02B

Abstract:
1. A light integration apparatus for use in a projection device, comprising a first integration rod and a second integration rod symmetrically disposed with respect to a symmetric axis, both the first integration rod and the second integration rod comprising: a longitudinal direction; a body portion extending along the longitudinal direction; a light emerging end facing the symmetric axis and comprising a light emerging surface and the light emerging surface is oblique to the longitudinal direction and the symmetric axis; a light incident end opposing to the light emerging end and comprising a light incident surface; and two reflecting mirrors, wherein the two reflecting mirrors, the light emerging surface of the first integration rod and the light emerging surface of the second integration rod define a space with an opening; wherein a first light and a second light are respectively guided into the body portions of the first integration rod and the second integration rod through the light incident surfaces thereof, the first light and the second light subsequently travel along the longitudinal direction and then are refracted by the light emerging surfaces of the first integration rod and the second integration rod respectively, and then the first and the second lights travel through the space and the opening.