LIGHT WAVE GUIDE, AND THREE DIMENSIONAL OPTICAL TOUCH PANEL HAVING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a light wave guide for detecting an XYZ coordinate despite its one layer configuration, and a three dimensional optical touch panel with a simple structure having the same.

SOLUTION: A light wave guide 30 includes a 45° mirror arranged at a tip end 32a of a clad layer 32 and tilted to a principal plane of the light wave guide 30 by 45°±5°; an 8° mirror arranged between the 45° mirror and cores 31 and tilted to the principal plane of the light wave guide 30 by 8°±3°; and a plurality of cores 31 in which light incident points are aligned along a length direction of the 45° mirror.

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