Patent ID: 9588012
Date: 2017-03-07
CPC Classifications: F21S,G01M,G02B

Claim:
1. A method for manufacturing an optical lens for a light module of a motor vehicle, the method including a procedure for calculating surfaces of the lens comprising the steps of: a) providing a desired light distribution to be generated by light passing through the calculated lens; b) deforming a first surface of the lens so as to generate light source images of different sizes in the light distribution; c) deforming a second surface of the lens lying opposite the first surface so as to displace a highest point of the light source images to lie adjacent to a light/dark boundary in a resulting light distribution obtained with the lens having the deformed surfaces; d) determining a quality of the resulting light distribution by a comparison with the predefined light distribution; e) if the quality lies above a predefined limit value, storing the calculated surfaces for the lens and ending the procedure for calculating surfaces of the lens; f) otherwise, renewing deformation of the first surface so as to generate a different bundling of the light source images in the light distribution; g) renewing deformation of the second surface so as to displace the highest point of the light source images to lie adjacent to the light/dark border boundary of the resulting light distribution; h) repeating steps f) and g) until the quality of the resulting light distribution lies above the limit value; and i) storing the calculated surfaces for the lens and ending the procedure for calculating surfaces of the lens; and manufacturing the optical lens with the previously calculated surfaces.