Patent ID: 6315411
Filing Date: 2001-11-13
Classification: G02C

Abstract:
A composite glass for protecting the eyesight comprising, in use, an upper part at the top and a lower part at the bottom and towards the ground, said composite glass comprising starting from the inside, from the eye side, towards the outside:a first optically polished mineral glass,a polarizing film having two sides,a second optically polished mineral glass, the polarizing film being glued with its first side onto the first glass and with its second side onto the second glass wherein:the first glass being approximately 1 mm thick is a high-pass filter, the cut-off wavelength of which is approximately 480 nm and having a yellow base,the polarizing film is oriented so as to attenuate the light rays reflected by the ground and sent back upwards,the second glass is colorless, and the first glass comprises at the surface, on the eye side, a light absorbing surface deposit making a film.