The 1550nm LiDAR narrowband filter is a specialized optical component designed based on the principle of optical wave interference. Its core function is to selectively transmit laser signals at the 1550nm wavelength while deeply blocking light in other bands (especially background stray light), thereby enhancing the detection accuracy and anti-interference capability of the LiDAR system. As a key component in the LiDAR optical path system, it is widely used in applications such as autonomous vehicles, long-range laser rangefinders, and environmental detection equipment. While ensuring eye safety, it enables precise perception of distant targets;