Patent ID: 9644818
Date: 2017-05-09
CPC Classifications: F21V,G01J,G02B

Claim:
1. An optical device, comprising: a collimation lens arranged on an outer surface thereof for converting incident light emitted by a light source to parallel light; a transmission light total reflection surface for totally reflecting a part of the parallel light transmitted by the collimation lens at a first predetermined angle so that the part of the parallel light is finally coupled to coupling optical fiber; a detection light total reflection surface for totally reflecting a part of the parallel light transmitted by the collimation lens at a second predetermined angle so that the part of the parallel light is finally coupled to an optical detector; and at least one attenuation light total reflection surface for totally reflecting parallel light to be attenuated which is transmitted by the collimation lens at a third predetermined angle before the parallel light to be attenuated leaves the optical device; wherein the transmission light total reflection surface, the detection light total reflection surface and the attenuation light total reflection surface meet at a common vertex.