The difference between folding lens and ordinary lens

The difference between them lies in the different ways of light refraction and the different imaging effects.

1. Different ways of light refraction: The folding lens uses the principle of total reflection, and the light reaches the imaging surface after multiple reflections, so the light has higher refractive index, less loss and relatively good imaging quality. However, the light of ordinary lens directly refracts to the imaging surface, so the light has low refractive index, large loss and relatively poor imaging quality.

2. Different imaging effects: Because the reflex lens adopts the principle of total reflection, the light reaches the imaging surface after many reflections, so the reflex lens can achieve the effect of super telephoto, the image field is curved, and the defocus imaging effect is unique, which can produce a fantastic Jiao Wai effect. Ordinary lenses can't achieve this effect.