What are the differences between blue light protection and circularly polarized light eye protection?

A: The technical routes of the two are completely different: Anti-blue light film: It filters out part of the blue light (mainly in the 415-455nm band) through yellow dye. The disadvantage is that the screen is prone to color deviation and yellowing, and the brightness is reduced. Moreover, the blue light output of the mobile phone screen is already within a safe range, and the actual eye protection effect is limited. Circularly polarized light technology: Woowhead Hujingtie optimizes the light form through optical structure, converting linearly polarized light into circularly polarized light close to natural light, improving the eye experience during long-term screen use, without color bias, reduced brightness, or sacrificing picture quality. It adopts a circularly polarized light route and achieves a soft light effect without dyeing. If blue light filtering is indeed necessary, it is recommended to use the system's built-in night view/original color display mode (the software can adjust the color temperature without losing the picture quality), rather than the dyed blue light film.