Patent ID: 9188707
Filing Date: 2015-11-17
Classification: G02B

Abstract:
1. An optical lens, comprising: a lens body comprising an optically effective portion and a peripheral portion surrounding the optically effective portion, the optically effective portion being configured for transmitting light therethrough, the optically effective portion having a first surface and an opposite second surface, the first and second surfaces each having a curvature of greater than zero; and a first anti-reflection film formed on the first surface of the optically effective portion, a reflectivity of the first anti-reflection film to light rays having wavelengths in a range from about 400nm to about 850nm being lower than 2%, wherein the first anti-reflection film comprises a plurality of high refractive index layers and a plurality of low refractive index layers alternately stacked one on another, a material of the high refractive index layers is TiO