At present, there are various colors of protective lens coatings on the market. The mainstream colors are blue and yellow. The pass rate of blue film is relatively stable, and the single point transmittance of yellow film is higher than that of blue film. Therefore, yellow film is often used in high-power applications. Scenes. So how do we define blue film or yellow film? The answer is simple. The color produced by reflecting white light is unified as the reference. If the reflected color is blue, it is the blue film, and if the reflected color is yellow, it is the yellow film.
