Patent ID: 9470902
Filing Date: 2016-10-18
CPC Classification: G02B

Claim Text:
1. A light source module, comprising: a double refraction prism comprising an incident surface and an emergent surface parallel with the incident surface, the double refraction prism having a fast axis and a slow axis respectively extending from the incident surface to the emergent surface; an optical plate positioned adjacent to the double refraction prism and facing the emergent surface; a first laser source facing the incident surface and emitting a first laser beam polarized along an S polarization direction; a second laser source facing the incident surface and emitting a second laser beam polarized along a P polarization direction, and the S polarization direction being perpendicular to the P polarization direction; and a third laser source facing one side of the optical plate facing away from the double refraction prism, the third laser source emitting a third laser beam; wherein the first laser beam and the second laser beam respectively transmit along the slow axis and the fast axis and are mixed on the emergent surface, the first and second laser beams emitting from the emergent surface and the third laser beam emitting from the third laser source mixed to a mixed laser beam by the optical plate.