Patent ID: 9703016
Date: 2017-07-11
CPC Classifications: G01B,G02B

Claim:
1. A structured light generation module, comprising: a light source providing a source beam with a source beam size; a collimating optical element, wherein after the source beam is collimated by the collimating optical element, a collimated light beam is generated; and a beam-diffusion optical element, wherein after the collimated light beam is diffused by the beam-diffusion optical element, a structured light with a beam diffusion angle relative to the collimated light beam is generated, wherein the beam-diffusion optical element comprises plural lenses, and the plural lenses are repeatedly distributed in one dimension, wherein the plural lenses have corresponding pitches, and each pitch is smaller than the source beam size, wherein the beam diffusion angle complies with mathematic formulae: wherein z=(p−0.368)/0.0665, p is the pitch in mm, S is a dimensionless zoom factor, θ is the beam diffusion angle in degree, and θ