They are not the same concept. Stray light refers to the halo effect caused by the optics themselves, which can blur the picture. On the other hand, reflection is the phenomenon where the user's face is reflected on the screen while using the product. Both of them will affect the visual experience and myopia prevention and control effects. However, most of the competitive products on the market have not solved the problem of reflection. The Hongyi AR distant imaging screen truly achieves the elimination of over 99% harmful light.