Patent ID: 9353929
Filing Date: 2016-05-31
CPC Classification: F21V,G02B,H01S

Claim Text:
1. A beam diffusing module, adapted to change an M squared of a laser beam along a first direction, the beam diffusing module comprising: a light incident terminal; a light emitting terminal, wherein the laser beam sequentially passes through the light incident terminal and the light emitting terminal; a first reflective plate, having a first reflective surface, the first reflective plate being disposed on a transmission path of the laser beam and extending from the light incident terminal to the light emitting terminal; and a second reflective plate, having a second reflective surface, the second reflective plate being disposed on the transmission path of the laser beam and extending from the light incident terminal to the light emitting terminal, wherein the first reflective surface and the second reflective surface are opposite to each other, at least one of the first reflective surface of the first reflective plate and the second reflective surface of the second reflective plate has a plurality of reflective microstructures, the reflective microstructures are arranged along a second direction from the light incident terminal towards the light emitting terminal, at least a part of the laser beam enters the beam diffusing module through the light incident terminal and emerges from the light emitting terminal to cause the M squared of the laser beam emitted from the beam diffusing module to be redistributed along the first direction, wherein the beam diffusing module complies with θ