Structured light lighting device and method of producing striped structured light

TLDR: In this article, a structured light lighting device consisting of a laser, a half-wave plate, a condenser lens, a beam splitter, a reflector, an optical length delay module, and a Dove prism and a halfwave plate which are rotationally arranged in an optical path is presented.

Abstract: The invention provides a structured light lighting device and a method of producing striped structured light. The structured light lighting device includes a laser, a half-wave plate, a condenser lens, a beam splitter, a reflector, an optical length delay module, and a Dove prism and a half-wave plate which are rotationally arranged in an optical path. Linearly polarized light emitted by the laser passes through the half-wave plate and the condenser lens in sequence, and is then split by the beam splitter into a reflected beam and a transmitted beam. The reflected beam enters the optical length delay module. The transmitted beam is reflected by the reflector to the optical length delay module. After the reflected beam and the transmitted beam pass through the optical length delay module, two lighting beams with the same optical length are formed. After the two lighting beams pass through the Dove prism and the half-wave plate, two spots are generated in a plane P1. A method of producing striped structured light is further provided. With the structured light lighting device adopted, problems such as low energy utilization rate, small lighting field of view and difficult polarization modulation in the prior art are solved.