Nylon polarized lens and moulding mold thereof

The nylon polarized lens, wherein the nylon material layer has two positioning flat surfaces at two opposing sides thereof, and the two positioning flat surfaces have protrusions formed at four corners of the two positioning flat surfaces.

The nylon polarized lens, wherein the four corners of the nylon material layer are formed with apertures for insertion of positioning needles of a mold to position the polarized film.

The nylon polarized lens, wherein the four corners of the nylon material layer are formed with concaved portions, and an outer surface of an area surrounded by the four concaved portions is adapted to bond the polarized film.

A moulding mold to manufacture a nylon polarized lens, with a thickness of about 2 mm, comprising an upper die and a lower die, the lower die having a top surface which is an arc concave surface, two opposing sides of the top surface of the lower die being formed with buffer flanges which are adapted to form buffer grooves of the nylon polarized lens, the top surface of the lower die being further formed with positioning portions to position a polarized film, the upper die having a bottom surface which is an arc convex surface, the upper die cooperating with the lower die to form a chamber for shaping the polarized lens, wherein during a process of injection molding the buffer grooves receive a melting plastic obstructed by the buffer flanges formed respectively right above an end of the buffer groove.