Aromatic polycarbonate polarising lens

A method of producing a polarizing lens, said method comprising:

• dyeing a polyvinyl alcohol film having a first and second surface separated by a thickness, with a dichroic dye in a thickness direction to no more than one third of the thickness of the polyvinyl alcohol film to obtain a polarizing film,
• forming a polarizing sheet by bonding a first aromatic polycarbonate sheet to the first surface of the polarizing film via an adhesive layer and bonding a second aromatic polycarbonate sheet to the second surface of the polarizing film via an adhesive layer,
• bending the polarizing sheet to have a spherical or a spherical surface, and injecting an aromatic polycarbonate onto a surfaces of at least one of the aromatic polycarbonate sheets to form a polarizing lens,
• measuring color tone of the polarizing sheet before the bending and color tone of the polarizing lens after the bending, and
• obtaining the color difference of the polarizing lens before and after the bending based on the color tones, as measured using the formula ((ΔL*)2+(Δb*)2)1/2,
• wherein the color difference is between 1.4 and 1.9.