Patent ID: 8870431

Claim:
A light mixing module, applied for receiving a first light which has a first wavelength, including: a matrix, including: an incidence surface, for receiving the first light; an emission surface, adjacent to the incidence surface; and a reflective surface, opposite to the emission surface, wherein the reflective surface is used to reflect the first light received by the incidence surface to make the first light to be emitted from the emission surface; a fluorescent film, disposed on or above the emission surface, having an upper surface and a lower surface which are opposite to each other and including a plurality of fluorescent particles, wherein the plurality of fluorescent particles receives a part of the first light emitted by the emission surface, the plurality of fluorescent particles is excited to emit a second light having a second wavelength, the second light and the first light are mixed into a predetermined light, and the predetermined light is a visible light; and a plurality of micro-structures, disposed on a surface selected from the group consisting of the emission surface, the reflective surface, the upper surface, the lower surface, and combination thereof, wherein the plurality of micro-structures is used to make the first light or the second light uniform, wherein the fluorescent film further includes a colloid, and a volume ratio of the plurality of fluorescent particles and the colloid is greater than 0 and smaller than or equal to 30%.