Patent ID: 8467058
Filing Date: 2013-06-18
Classification: F21V,G01M

Abstract:
1. A light source assembly comprising: a transparent base plate comprising an upper surface and a pair of opposite first side surfaces perpendicularly connected to the upper surface, the transparent base plate defining a first receiving space in the upper surface and a through hole passing through the pair of first side surfaces; a pattern plate accommodated in the through hole and comprising a plurality of strip patterns formed thereon, the strip patterns configured to test a modulation transfer function of a lens; a light guide plate comprising two opposite parallel light incident surfaces, a light emitting surface perpendicular to the light incident surfaces, and a plurality of microstructures formed on the light emitting surface; and a plurality of illuminants; wherein the light guide plate is accommodated in the first receiving space with the light emitting surface facing the upper surface, the illuminants are placed on the upper surface and face the corresponding light incident surfaces for emitting light into the light guide plate, and the microstructures are configured to guide the light out of the light guide plate.