| 主权项 |
1. A light collector comprising:
a light guide having a light-entrance surface; a plurality of spaced apart optical blocks that are disposed over said light-entrance surface of said light guide and that are arranged in an array, said array including at least one row of said optical blocks, each of said optical blocks having top and bottom surfaces and front and rear surfaces, said bottom surface being spaced apart from said light-entrance surface of said light guide by a clearance and having front and rear edges, said front and rear surfaces extending curvedly and frontwardly from said top surface to said front and rear edges of said bottom surface, respectively, and being aligned with each other along a row direction, said rear surface exhibiting total internal reflection and having a focal point such that light reflected from said rear surface converge at said focal point, said focal point being disposed adjacent to said front edge of said bottom surface and distal from said rear edge of said bottom surface; and a plurality of optical coupling protrusions, each of which protrudes outwardly from said bottom surface of a corresponding one of said optical blocks, each of which is disposed at said focal point of said rear surface, and each of which is coupled to said light-entrance surface of said light guide for coupling the light reflected from said rear surface into said light guide; wherein said front surface of one of every two adjacent ones of said optical blocks overlaps said rear surface of the other of every two adjacent ones of said optical blocks along a normal direction of said light guide that is transverse to the row direction; and wherein said front surface of one of every two adjacent ones of said optical blocks cooperates with said rear surface of the other of every two adjacent ones of said optical blocks to define a gap therebetween. |
