A method of manufacturing a light guide for illuminating a display device and light guide thus obtained.

摘要

A method of manufacturing an extraction unit (26) for a light guide (20), the extraction unit (26) consisting of a plurality of extractors of light (36) to be machined in the 'at least one of upper (24) or bottom (34) of the light guide (20), said method comprising the steps of: generating, from the results of a calculation for determining the desired extraction pattern ( 26), a computer file containing data of a digital image representing the desired extraction pattern (26), the digital image with several gray levels each corresponding to a depth of a given light extractor (36); load image file in computer operating software for engraving machine equipped with a striking tool; converted by means of the engraving machine control software each gray level of the digital image into a strike force level corresponding to the striking tool, the depth of the resulting light extractor (36) d 'increases as the striking force of the striking tool is high.