Waterproof and moistureproof optical waveguide sheet and manufacturing process thereof

Abstract

The invention relates to the technical field of optical waveguide sheets, in particular to a waterproof and moistureproof optical waveguide sheet and a manufacturing process thereof.The waterproof and moistureproof optical waveguide sheet comprises a first protection lens, a waveguide sheet is pasted on the inner side of the first protection lens, and a second protection lens is pasted on the outer side of the waveguide sheet; a first air hole and a second air hole are formed in the inner wall of the first protection lens and the inner wall of the second protection lens, a first waterproof breathable film and a second waterproof breathable film are tightly attached to the outer side of the first air hole and the outer side of the second air hole, and after the first protection lens, the waveguide piece and the second protection lens are pasted through glue, the first waterproof breathable film and the second waterproof breathable film are pasted. According to the present invention, the use is convenient, the first protection lens, the waveguide sheet and the second protection lens are arranged and are pasted together through the waterproof glue, and the first waterproof gas-permeable membrane and the second waterproof gas-permeable membrane are tightly attached to the outer sides of the first gas-permeable hole and the second gas-permeable hole so as to isolate water or water vapor.

Description

Technical Field

[0001] The invention relates to a waterproof and moisture-proof optical waveguide sheet and a manufacturing process thereof, belonging to the technical field of optical waveguide sheets. Background Art

[0002] In AR glasses, the derivative optical waveguide is a widely recognized AR display technology. The waveguide is a piece of wafer glass with a nano-imprinted optical path on it. The display content is emitted by the optical machine and projected into the space in front of the human eye by diffraction in the waveguide. The current design of the optical waveguide is to sandwich a waveguide between two protective lenses, and glue them together on the periphery to form a component. A metal frame is added outside the component to increase the strength of the lens.

[0003] The existing waterproof and moisture-proof optical waveguide sheet and its manufacturing process still have some problems during use. The above-mentioned components cannot be waterproof and moisture-proof. Water vapor will enter the waveguide layer in the case of slight rain or sweat, or in a high humidity environment. The water ingress can be clearly seen from the appearance. The moisture will affect the optical part of the waveguide layer, thereby affecting the optical display. Therefore, in the process of waveguide sheet from technology to industrialization, waterproof and moisture-proof design is a necessary design. Summary of the invention

[0004] The purpose of the present invention is to provide a waterproof and moisture-proof optical waveguide sheet and its manufacturing process. The present invention has a simple structure and is easy to use. It can prevent sweat generated during exercise from entering the optical display module, or in an outdoor rainy and snowy environment, rainwater does not enter the waveguide sheet, thereby expanding the application scenarios of the optical waveguide sheet to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A waterproof and moisture-proof optical waveguide sheet and a manufacturing process thereof, comprising a No. 1 protective lens, a waveguide sheet pasted on the inner side of the No. 1 protective lens, a No. 2 protective lens pasted on the outer side of the waveguide sheet, a No. 1 air vent and a No. 2 air vent are provided in the inner walls of the No. 1 protective lens and the No. 2 protective lens, a No. 1 waterproof breathable membrane and a No. 2 waterproof breathable membrane are closely attached to the air vent and the outer side of the air vent, and after the No. 1 protective lens, the waveguide sheet and the No. 2 protective lens are pasted with glue, waterproof glue is applied all around the outer side.

[0007] Furthermore, the No. 1 protective lens and the No. 2 protective lens are symmetrically distributed on the outside of the waveguide, and the No. 1 protective lens, the No. 2 protective lens and the glass guide are glued together by glue. The waveguide is made of a variety of materials such as wafer glass, resin PC or PMMA.

[0008] Furthermore, the process comprises the following steps:

[0009] S1. Work environment inspection;

[0010] S2, glass processing;

[0011] S3, workpiece installation and connection;

[0012] S4, reinforcement protection;

[0013] S5. Inspection and acceptance;

[0014] Furthermore, the extremely high requirements for the production plant require constant temperature and humidity (the production conditions are given by Zhou Meng), and during the production process, it is ensured that no moisture enters the middle of the triple-layer glass;

[0015] Furthermore, the first step is to process and polish the first protective lens, the second protective lens and the wafer glass to form them into the required shapes;

[0016] Furthermore, the quality of the glue is first tested, and then the first protective lens, the second protective lens and the wafer glass are glued together using the glue;

[0017] Furthermore, after the installation is completed, the workpiece is manually inspected and accepted;

[0018] The beneficial effects of the present invention are:

[0019] (I) The present invention provides a No. 1 protective lens, a wafer glass and a No. 2 protective lens, which are adhered together by a waterproof adhesive, and then a No. 1 waterproof breathable membrane and a No. 2 waterproof breathable membrane are closely attached to the outer sides of the No. 1 vent hole and the No. 2 vent hole, so that water or water vapor can be isolated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention, but do not constitute a limitation of the present invention.

[0021] Figure 1 It is a schematic diagram of the structure of a waterproof and moisture-proof optical waveguide sheet of the present invention when it is unfolded;

[0022] Figure 2 It is a schematic structural diagram of a waterproof and moisture-proof optical waveguide sheet of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of a waterproof and moisture-proof optical waveguide sheet waterproof adhesive of the present invention;

[0024] Figure 4 It is a side cross-sectional view of a waterproof and moisture-proof optical waveguide sheet of the present invention;

[0025] Numbers in the figure: 1. Protective lens No. 1; 2. Waveguide; 3. Protective lens No. 2; 4. Air vent No. 1; 5. Waterproof breathable membrane No. 1; 6. Air vent No. 2; 7. Waterproof breathable membrane No. 2; 8. Waterproof glue. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1 Please refer to Figure 1-Figure 2 , the present invention provides a technical solution:

[0028] A waterproof and moisture-proof optical waveguide sheet and a manufacturing process thereof, comprising a No. 1 protective lens 1, a waveguide sheet 2 is pasted on the inner side of the No. 1 protective lens 1, a No. 2 protective lens 3 is pasted on the outer side of the waveguide sheet 2, a No. 1 air vent 4 and a No. 2 air vent 6 are provided in the inner walls of the No. 1 protective lens 1 and the No. 2 protective lens 3, a No. 1 waterproof breathable membrane 5 and a No. 2 waterproof breathable membrane 7 are closely attached to the outer sides of the air vent 4 and the air vent 6, and after the No. 1 protective lens 1, the waveguide sheet 2 and the No. 2 protective lens 3 are pasted with glue, a waterproof glue 8 is applied on the outer sides in a whole circle.

[0029] Specifically, Figure 1 As shown, the protective lens No. 1 1 and the protective lens No. 2 3 are symmetrically distributed on the outside of the waveguide plate 2, and the protective lens No. 1 1 and the protective lens No. 2 3 are glued to the glass guide plate 2 by glue. The waveguide plate 2 is made of various materials such as wafer glass, resin PC or PMMA.

[0030] The process includes the following steps:

[0031] S1. Work environment inspection. The extremely high requirements for the production plant, constant temperature and humidity production conditions are required by Zhou Meng. During the production process, it is ensured that no moisture enters the middle of the three-layer glass;

[0032] S2, glass processing, firstly, the first protective lens 1, the second protective lens 3 and the wafer glass 2 are processed and polished to make them into the required shape;

[0033] S3, workpiece installation and connection, firstly, the quality of the glue is tested, and then the No. 1 protective lens 1, the No. 2 protective lens 3 and the wafer glass 2 are glued together;

[0034] S4, inspection and acceptance. After the installation is completed, the workpiece is manually inspected and accepted;

[0035] The working principle of the present invention is as follows: a No. 1 protective lens 1, a waveguide plate 2 and a No. 2 protective lens 3 are arranged, and they are pasted together by a waterproof glue 8, and then a No. 1 waterproof breathable membrane 5 and a No. 2 waterproof breathable membrane 7 are tightly attached to the outer sides of the No. 1 air hole 5 and the No. 2 air hole 6, so that water or water vapor can be isolated.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof and moisture-proof optical waveguide sheet, comprising a protective lens (1), characterized in that: A waveguide plate (2) is adhered to the inner side of the first protective lens (1), and a second protective lens (3) is adhered to the outer side of the waveguide plate (2). A first air vent (4) and a second air vent (6) are provided in the inner walls of the first protective lens (1) and the second protective lens (3). A first waterproof breathable membrane (5) and a second waterproof breathable membrane (7) are closely attached to the outer sides of the first air vent (4) and the second air vent (6). After the first protective lens (1), the waveguide plate (2) and the second protective lens (3) are adhered by glue, a waterproof glue (8) is applied around the outer sides.

2. The waterproof and moisture-proof optical waveguide sheet according to claim 1, characterized in that: The first protective lens (1) and the second protective lens (3) are symmetrically distributed on the outer side of the waveguide plate (2), and the first protective lens (1) and the second protective lens (3) are glued to the waveguide plate (2) by glue. The waveguide plate (2) is made of a variety of materials such as wafer glass, resin PC or PMMA, and the first protective lens (1) and the second protective lens (3) are made of a variety of materials such as tempered glass, resin PC or PMMA.

3. The waterproof and moisture-proof optical waveguide sheet and the manufacturing process thereof according to claim 1, characterized in that: The process comprises the following steps: S1. Check the working environment. The production plant has extremely high requirements. Constant temperature and humidity are required. During the production process, ensure that no moisture enters the middle of the three-layer lens; S2, lens processing, firstly, the first protection lens (1) and the second protection lens (3) are processed, cut and polished with the waveguide plate (2) to make them into the required shape; S3, workpiece installation and connection, firstly, the quality of the glue is tested, and then the first protective lens (1), the second protective lens (3) and the waveguide sheet (2) are glued together; S4. Inspection and acceptance: After installation, the workpiece is manually inspected and accepted.

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