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A glass frame structure based on diffractive optical waveguide and its processing method

A frame structure, diffracted light technology, applied in the direction of optical waveguide light guide, light guide, optics, etc., can solve the problems affecting the use efficiency of diffractive optical waveguide lens, small field of view, too large area, etc., to achieve easy mass production, high resolution, The effect of improving the efficiency of use

Active Publication Date: 2021-11-26
福建省德源智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a glass frame structure based on a diffractive waveguide and its processing method, aiming to solve the problem that the area range of the pupil dilating grating on the lens in the prior art is too large to make the field of view seen by the human eye small and affect the diffractive waveguide lens. The problem of efficiency

Method used

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  • A glass frame structure based on diffractive optical waveguide and its processing method
  • A glass frame structure based on diffractive optical waveguide and its processing method
  • A glass frame structure based on diffractive optical waveguide and its processing method

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Embodiment 1

[0043] see Figure 1-10 , the present invention provides the following technical solutions:

[0044] A glass frame structure based on a diffractive optical waveguide, comprising:

[0045] framebody1;

[0046] The optical lens 203, the optical lens 203 is fixedly connected in the frame main body 1 through the first snap ring 105 and the second snap ring 106;

[0047] An optical-mechanical projector 2, which is fixedly connected to the frame main body 1;

[0048] The grating assembly, the grating assembly includes an output grating 2031, two grating grooves 201, a pupil expansion grating 204 and a plurality of light transmission holes 202, the two grating grooves 201 are symmetrically opened in the frame main body 1, and the two pupil expansion gratings 204 are respectively fixed Connected to the inner wall of the grating groove 201, the output grating 2031 is fixedly connected to the surface of the optical lens 203, and a plurality of light-transmitting holes 202 are respect...

Embodiment 2

[0063] A processing method for a glass frame structure based on a diffractive optical waveguide:

[0064] S1. Optical waveguide design: the relationship between the tooth width s and the depth d of the output grating 2031 on the surface of the optical lens 203 is d=2s, and the periodic relationship a, b and c of the input light 3, the turning light 301 and the vertical light 302 is Ta=Tb =3 / 2Tc, design the grating arrangement on the waveguide according to the relationship, and simulate the FOV viewing angle, efficiency, uniformity and stray light of the optical waveguide;

[0065] S2. Master plate production: Select high-quality master plate raw materials, add anti-corrosion agent, and manufacture pupil dilating grating 204 and output grating 2031 structures through electron beam lithography equipment, and the single-chip optical waveguide structure processed by electron beams is neatly processed by stepping and repeating Reprints are arranged on 6 / 8-inch wafers;

[0066] S3....

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Abstract

The invention provides a glass frame structure based on a diffractive optical waveguide and a processing method thereof, belonging to the technical field of optical components. The glass frame structure based on a diffractive optical waveguide includes a frame main body; an optical lens through a first clasp and a second optical lens The two snap rings are fixedly connected in the main body of the frame; the optical machine projector is fixedly connected in the main body of the frame; the grating assembly, the grating assembly includes an output grating, two grating grooves, a pupil expanding grating and a plurality of light transmission holes, Two grating grooves are opened symmetrically in the main body of the frame, two pupil expanding gratings are respectively fixedly connected to the inner wall of the grating groove, the output grating is fixedly connected to the surface of the optical lens, and a plurality of light-transmitting holes are respectively opened on the inner wall of the two grating grooves The device transfers the area range of the pupil expansion grating of the lens to the main body of the frame, increases the range of the output grating on the optical lens, and effectively improves the use efficiency of the diffractive optical waveguide lens.

Description

technical field [0001] The invention belongs to the technical field of optical components, and in particular relates to a glass frame structure based on a diffractive optical waveguide and a processing method thereof. Background technique [0002] Optical waveguide allows light to propagate in a designed path, while diffractive optical waveguide uses the diffraction characteristics of light to design and realize the "optical path"; diffraction requires small holes or "fences" to achieve, and the technology realized by diffractive optical waveguide One of the methods is to "carve" a series of "fences" on the optical plane to allow light to travel along the designed path. [0003] In the prior art, three gratings are required on one lens, but only one area of ​​the output grating is seen by the human eye, and the area range of the pupil expansion grating on the lens is too large to make the human eye see a small field of view, which affects the diffractive optical waveguide le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/124G02B6/13
CPCG02B6/124G02B6/13G02B2006/12107G02B2006/12166
Inventor 张左弓林靖翔林菊茹
Owner 福建省德源智能科技有限公司