Preparation method of optical waveguide master mask, optical waveguide and augmented reality equipment

Abstract

The invention provides a preparation method of an optical waveguide master mask, an optical waveguide and augmented reality equipment. The preparation method comprises the following steps: providing at least one first master mask, wherein each first master mask is provided with at least one first grating; preparing at least two grating devices by adopting the at least one first master mask, wherein each grating device is provided with a second grating complementary with the first grating; providing a bearing layer, arranging the at least two grating devices at preset positions of the bearing layer, and enabling the second grating to deviate from the bearing layer to obtain a second mother set; the optical waveguide master mask is prepared through the second master mask, the optical waveguide master mask is provided with at least two third optical gratings, the third optical gratings and the second optical gratings are complementary, and the third optical gratings and the first optical gratings are of the same structure. According to the preparation method, the preparation time of the optical waveguide master mask can be shortened, the development time is shortened, and the process cost is low.

Description

technical field [0001] The present application relates to the field of electronics, and in particular to a method for preparing an optical waveguide master, an optical waveguide and an augmented reality device. Background technique [0002] With the development of virtual reality and augmented display technologies, AR (Argument Reality, Augmented Reality) devices have received more and more attention. The embossed diffractive optical waveguide solution has the advantages of small size, lightness and easy wearing, and is one of the mainstream solutions of AR technology in the future. Before preparing the optical waveguide, the optical waveguide imprinting master needs to be prepared first. The processing time of the optical waveguide imprinting master usually takes 3-6 months. After the optical waveguide imprinting master is completed, if you need to modify the design scheme , or for simple optimization, the optical waveguide imprint master needs to be reprocessed, resulting...

AI Technical Summary

Problems solved by technology

Before preparing the optical waveguide, the solution needs to prepare the optical waveguide imprinting master. The processing time of the optical waveguide imprinting master usually takes 3-6 months. After the optical waveguide imprinting master is completed, if the design needs to be modified , or for simple optimization, it is necessary to reprocess the optical waveguide imprint master, resulting in a long development cycle and high cost for the entire optical waveguide

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