The traffic lens is the core optical component of traffic signal lights, mainly used in traffic signal lamp groups (such as red, yellow, and green light sets). Through specific optical design (such as the texture structure on the surface of the lens in the figure), it refracts and distributes the light emitted by the light source (usually LED), enabling the light to be projected uniformly and clearly over a long distance and a wide angle range, ensuring that drivers and pedestrians on the road can clearly identify the color and status of the signal light. The table in the figure lists the parameters of traffic lenses of different models (HW - 265 series, HW - 300), including the lens diameter (such as φ265, φ300), thickness, etc., to meet the size and optical requirements of different traffic lights; the physical pictures on the right show the effect of the traffic signal light after installing the lens, as well as the microscopic optical structure close - up of the lens.