Varies by application. Even in the autonomous vehicle market, some sensors have 360 ° FOV, while others are designed for bumpers with adaptive cruise control. The specifications of the anti-reflection layer must consider the design of the laser pointer detection optics to ensure high transmission at all angles in the measurement range. At the same time, additional modules are needed to exclude ambient light, protect internal optics or further improve the signal-to-noise ratio.
LiDAR has a wide range of applications. In order to achieve the optimization of accuracy, sensitivity, and range, a variety of different anti-reflection layer preparation methods have been produced. No single design method prevails. LiDAR’s coated windows can be flat, curved or cylindrical-made from a single piece or part. Depending on the standard or aspheric lens, the coating may need to be changed. Each design is unique. Even within a given LiDAR product line, manufacturers may use different geometries for different applications, which requires coating suppliers to have the ability to produce coatings on substrates with different geometries.
In LiDAR’s optical coatings, the materials of substrate materials are also diverse, involving glass, plastics, polymers and non-ferrous materials. Single-point diamond (SPDT) optical device laser pointer is usually in the sample stage, and some have entered the stage of mass production of complex parts. All LiDAR optical coatings have strict requirements for uniformity, whether it is the surface or volume of a single coating. This is particularly important in the autonomous vehicle market, because LiDAR’s role is to navigate, approach detection and ensure safety.
Jigs have a certain effect on coating uniformity, but the multi-axis coating system is the real factor that leads to the difference. Ensuring that all components are coated and that all surfaces are adequate for the most challenging geometries. This requires fine control of the machinery and laser pointers process, including the selection of the correct rotation rate of each axis, synchronization of each axis, and fine control of the deposition rate within the cavity. The multi-axis coating enables high-quality, consistent performance everywhere in large-size optical film coatings, and is consistently consistent in mass production.