Sun mirror, light-colored sunglasses, and special purpose sunglasses three types of sunglasses can be divided into general use.
Sunglasses so-called sun mirror, suggests that it is for shading purposes, in the sun, usually rely on to adjust the size of the pupil to adjust the flux
The types of lenses that are broadly divided into: five kinds of anti-reflective protective lenses, color lenses, color coated lenses, polarized lenses and photochromic lenses.