Preparation method for diffractive optical waveguide and diffractive optical waveguide

By forming a mask on the surface of a glass substrate and then tempering it, a tempered and non-tempered region is created. This solves the problem of uneven coating of tempered glass in diffractive waveguides and enables the efficient fabrication of diffractive waveguides with good resistance to mechanical shock.

WO2026103134A1PCT designated stage Publication Date: 2026-05-21ZHUHAI MOJIE TECH CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ZHUHAI MOJIE TECH CO LTD
Filing Date
2025-06-24
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

In the existing technology, tempered glass cannot be cut after being coated with adhesive during the fabrication of diffractive waveguides, resulting in uneven adhesive coating and limiting its application in diffractive waveguides.

Method used

A mask is formed on the surface of a glass substrate, and the covered part of the surface is tempered to form a tempered and non-tempered area. After removing the mask, waveguide fabrication is performed to ensure that the non-tempered area can be cut and to avoid areas with uneven adhesive coating.

Benefits of technology

This study enabled the effective application of tempered glass in diffractive waveguides, improving its resistance to mechanical shock and refractive index, solving the problem of uneven coating, and increasing preparation efficiency.

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Abstract

The present application provides a preparation method for a diffractive optical waveguide and a diffractive optical waveguide. The method comprises: providing a glass substrate; forming a mask on the surface of the glass substrate, wherein the mask covers part of the surface of the glass substrate; performing a tempering treatment on the glass substrate on which the mask is formed, so as to temper a region not covered by the mask, wherein the glass substrate after the tempering treatment comprises a tempered region and an un-tempered region; removing the mask on the glass substrate on which the tempering treatment has been completed; and preparing a waveguide on the glass substrate on which the mask has been removed, so as to obtain at least two diffractive optical waveguides, wherein part or the entirety of a waveguide substrate of the diffractive optical waveguides is the tempered region. The present application solves the problem of inability of preparation of diffractive optical waveguides on tempered glass, and the diffractive optical waveguides prepared by means of the method for preparing a diffractive optical waveguide of the present application have a high refractive index and good mechanical impact resistance.
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