With the increasing level of intelligent driving, the processing of products such as radomes and filters is becoming more and more important, and in the role of automotive assisted driving systems, such as cameras, radars and LiDAR sensors, filters are used to selectively transmit or block specific wavelengths of light to achieve accurate perception of roads, obstacles and traffic conditions. Filter hardening can improve infrared transmittance, and improve surface hardness, in the process of long-term use, to prevent aging yellowing.
Because of the needs of structural design, the filter is not completely flat, and the inner surface is more complex due to the need to install a camera, so it is very difficult to level for the dip coating hardening process. It is more difficult to solve the problem that the inner surface can not accumulate liquid (which will affect the light penetration), generally speaking, the hardening plant will adjust according to the production experience, through time control, fixture design, etc., to obtain the best appearance effect.
Because of the particularity of the use environment of the vehicle radome and filter, the performance test requirements are also relatively high, and there are strict standards for high temperature and high humidity environment, salt spray test environment, ultraviolet resistance test and other categories, so the nano hardening plant should strictly control the quality to prevent a large amount of loss caused by substandard performance testing.