Light-gathering device and manufacturing method thereof

The invention provides a method of manufacturing a light-gathering device. The method comprises the following steps of forming a light incidence part on a translucent plate and equipping multiple projecting structure on the light incidence part, wherein, the upper surface area of each projecting area is smaller than the area of the part where the projecting structure is connected with the light incidence part; making auxiliary connecting plates connected with the upper surfaces of the projecting structures in a bonding way; heating the multiple projecting structures; drawing the projecting structures into multiple light transmission channels by exerting drawing force on the auxiliary connecting plates; removing the auxiliary connecting plates and exposing the end faces of the light transmission channels. Correspondingly, the invention provides a light-gathering device. The light-gathering device provided in the invention has the advantages of good light-gathering effects, small volume, simple structure, low cost, flexible use, simple production technology and easy manufacture.