Patent ID: 7863553

Claim:
A light processing structure for a digital light processing (DLP) projection device, wherein the DLP projection device comprises two digital micro-mirror devices (DMDs), the light processing structure comprising: a color separation mechanism, comprising: at least one color separation device adapted for splitting an incident light beam into a plurality of sub-light beams; a reflecting mechanism, comprising: two light reflecting devices for receiving the incident sub-light beams and reflecting the sub-light beams onto the two DMDs respectively; and a color combination mechanism, comprising: a color-combining prism assembly, including two triangular prisms, one of the inclined planes of one of the triangular prisms being adjacent to one of the inclined planes of the other triangular prism, whereby combining and transmitting the sub-light beams outward after receiving the sub-light beams processed by the DMDs, wherein each of the two light reflecting devices is a total internal reflection (TIR) prism, and after reflection by the two DMDs, the sub-light beams are directly passed through the two light-reflecting devices and emitted into the color combination mechanism.