CN114516188A - Hot pressing process for micro-nano level optical waveguide mirror - Google Patents

Abstract

The technical scheme of the present invention discloses a method for hot pressing the surface of a micro-nano optical waveguide mirror, which includes the following steps: preheating the optical waveguide lens to soften according to material characteristics; Press and press the optical waveguide lens after hot melt softening, so that the micro-nano optical channel pattern is directly printed on the optical waveguide lens after being melted and softened; the optical waveguide lens is cooled and shaped to normal temperature; The surface of the optical waveguide lens is coated. The technical scheme of the present invention solves the problems of the prior art that the optical waveguide mirror surface imprinting processing procedure is cumbersome, the materials used are large, the processing quality is inconvenient to control, and the processing efficiency is low.

Description

Micro-nano-scale optical waveguide mirror surface hot pressing process

technical field

The technical scheme of the present invention relates to the field of micromachining, in particular to a method for hot pressing of a mirror surface of a micro-nano-level optical waveguide.

Background technique

With the rapid and rapid development of science and technology, virtual reality technology has moved towards a relatively mature development path. This type of immersive interactive application relying on hardware has been popularized in various fields, such as 3D modeling, medical care, education and public facilities. . At present, portable VR and AR technologies have been developed, and portable AR and VR glasses are used to carry out various activities such as games, remote control, and immersive learning. These devices usually consist of lenses and control devices connected to the lenses. One of the processes is to print a pattern similar to an optical fiber on the optical waveguide mirror by transfer printing on the lens to realize the display function. This method requires first laying a layer of soft glue material on the substrate, and then passing the tape The patterned mold is pressed from the soft rubber material from top to bottom, so that the pattern is printed on the modified soft plastic material, and then the soft plastic material is aligned with the optical waveguide mirror surface, and the pattern is transferred to the optical waveguide mirror surface. This processing method is cumbersome and prone to many uncontrollable problems, such as inaccurate transfer due to the influence of temperature on soft rubber materials; dust and impurities during the transfer process, the influence of air pressure, and low processing efficiency.

SUMMARY OF THE INVENTION

The technical solution of the present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the main purpose of the technical solution of the present invention is to provide a micro-nano-level optical waveguide mirror surface hot pressing process method, which aims to solve the complicated process of the optical waveguide mirror surface imprinting process in the prior art, the use of many materials, and the inconvenient processing quality. control, and the problem of lower processing efficiency.

In order to achieve the above purpose, the technical solution of the present invention provides a micro-nano-level optical waveguide mirror hot pressing process method, which includes the following steps:

The optical waveguide lens is pre-heated to soften according to the material characteristics;

Press the molding die with the micro-nano optical channel pattern on the surface and the hot-melt softened optical waveguide lens, so that the micro-nano optical channel pattern is directly printed on the hot-melted and softened optical waveguide lens;

Cool and shape the optical waveguide lens to normal temperature;

The surface of the optical waveguide lens printed with the micro-nano optical channel pattern is coated.

In one embodiment, the optical waveguide lens is made of acrylic and optical glass.

In one embodiment, when the optical waveguide lens is made of acrylic material, the temperature of at least 70 degrees is used for thermal melting and softening, and when the optical waveguide lens is lens glass, the temperature of at least 400 degrees is used for hot melting and softening.

In one embodiment, when the optical channel texture is imprinted on the optical waveguide lens, its width and depth are 200-400 nm and 50-100 nm.

In one of the embodiments, the radian of the pressing mold is consistent with the optical waveguide lens when it is attached.

In one embodiment, the pressing method of the pressing mold and the hot-melt softened optical waveguide lens includes pressing in a vacuum state and pressing under standard atmospheric pressure. After the mold is aligned with the hot-melt softened optical waveguide lens, it is put into the container to be evacuated, and vacuumized and pressed together.

In one of the embodiments, the forming die is a new chrome compact structure that is not easily deformed.

In one of the embodiments, the forming die is a one-piece structure.

In one of the embodiments, the top of the profiling die is connected to a motor-driven manipulator.

In one of the embodiments, the micro-nano optical channel pattern on the pressing mold is formed by electrically exciting imprinting through a resonant cavity composed of nanowires.

The beneficial effects of the technical solution of the present invention are as follows:

The micro-nano-level optical waveguide mirror surface hot pressing method proposed by the technical solution of the present invention adopts the hot-melting and direct pressing method, which not only saves a lot of processing steps and materials, but also has fewer factors affecting the processing quality and faster processing efficiency. And each size parameter is easy to adjust.

Description of drawings

In order to more clearly illustrate the embodiments of the technical solutions of the present invention or the technical solutions in the prior art, the accompanying drawings required in the description of the embodiments or the prior art will be briefly introduced below. The drawings are only some embodiments of the technical solutions of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

FIG. 1 is a schematic diagram of each implementation step of the technical solution of the present invention.

FIG. 2 is a schematic diagram of the assembly of the finished product after pressing according to the technical solution of the present invention.

FIG. 3 is a schematic diagram of a pressing method in the prior art.

FIG. 4 is a schematic diagram of the pressing method of the technical solution of the present invention.

Detailed ways

In order to make the purpose of the technical solutions of the present invention and the advantages of the technical solutions of the present invention clearer, the technical solutions in the embodiments of the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the technical solutions of the present invention. Obviously, the described embodiments are only a part of the embodiments of the technical solutions of the present invention, rather than all the embodiments.

Based on the embodiments in the technical solutions of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the technical solutions of the present invention.

It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the technical solution embodiments of the present invention are only used to explain the relationship between the various components in a certain state (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly.

In the technical solutions of the present invention, descriptions such as "first", "second", etc. are only used for description purposes, and should not be interpreted as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature.

In the description of the technical solutions of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the technical solution of the present invention, unless otherwise expressly specified and limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, "fixed" may be a fixed connection, a detachable connection, or an integral molding It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the technical solutions of the present invention can be understood according to specific situations.

In addition, the technical solutions between the various embodiments in the technical solutions of the present invention can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that this technology The combination of the schemes does not exist, nor does it fall within the protection scope required by the technical scheme of the present invention.

Example 1:

Referring to Figure 1 and Figure 4, a micro-nano-level optical waveguide mirror hot pressing process method includes the following steps:

The optical waveguide lens is pre-heated to soften according to the material characteristics;

Press the molding die with the micro-nano optical channel pattern on the surface and the hot-melt softened optical waveguide lens, so that the micro-nano optical channel pattern is directly printed on the hot-melted and softened optical waveguide lens;

Cool and shape the optical waveguide lens to normal temperature;

The surface of the optical waveguide lens printed with the micro-nano optical channel pattern is coated.

The micro-nano optical waveguide mirror surface hot pressing process adopts hot melting and direct pressing, which not only saves a lot of processing steps and materials, but also has fewer factors affecting the processing quality, faster processing efficiency, and easy adjustment of various size parameters. .

1-4, preferably, the optical waveguide lens is made of acrylic and optical glass.

1 to 4 , preferably, when the optical waveguide lens is made of acrylic material, the temperature of at least 70 degrees is used for hot melt softening, and when the optical waveguide lens is lens glass, the temperature of at least 400 degrees is used for hot melt softening.

1-4, preferably, when the optical channel texture is imprinted on the optical waveguide lens, its width and depth are 200-400 nm and 50-100 nm.

Referring to FIGS. 1-4 , preferably, the radian of the pressing mold and the optical waveguide lens are the same when they are attached.

Referring to FIGS. 1-4 , preferably, the pressing method of the pressing mold and the hot-melt softened optical waveguide lens includes pressing in a vacuum state and pressing under standard atmospheric pressure. When pressing in a vacuum state, First, align the pressing mold with the hot-melt softened optical waveguide lens, put it into the container to be evacuated, and then vacuumize and press together.

Referring to Figures 1-4, preferably, the forming die is a new chrome compact structure that is not easily deformed.

Referring to Fig. 1-Fig. 4, preferably, the pressing mold is an integral structure.

1-4, preferably, the top of the forming die is connected with a motor-driven manipulator.

Referring to FIGS. 1-4 , preferably, the micro-nano optical channel pattern on the embossing mold is formed by electrically exciting imprinting through a resonant cavity composed of nanowires.

The micro-nano optical channel pattern is similar to the optical fiber and thinner than the optical fiber, and is integrated on the lens as a display device on the lens.

The working principle of the technical solution of the present invention is as follows:

The micro-nano optical waveguide mirror surface hot pressing process adopts hot melting and direct pressing, which not only saves a lot of processing steps and materials, but also has fewer factors affecting the processing quality, faster processing efficiency, and easy adjustment of various size parameters. .

The above descriptions are only preferred embodiments of the technical solutions of the present invention, and are not intended to limit the patent scope of the technical solutions of the present invention. Under the conception of the technical solutions of the present invention, the descriptions and accompanying drawings of the technical solutions of the present invention are used. Effective structural transformation, or direct/indirect application in other related technical fields are included in the patent protection scope of the technical solution of the present invention.

Claims (10)

1. a micro-nano-level optical waveguide mirror surface hot pressing process method, is characterized in that, comprises the steps: S1. Heat-melt the optical waveguide lens to soften in advance according to the material characteristics; S2. Press the molding die with the micro-nano optical channel pattern on the surface and the hot-melt softened optical waveguide lens, so that the micro-nano optical channel pattern is directly printed on the hot-melted and softened optical waveguide lens; S3. Cool and shape the optical waveguide lens to normal temperature; S4, coating the surface of the optical waveguide lens printed with the micro-nano optical channel pattern. 2 . The method of claim 1 , wherein the optical waveguide lens is made of acrylic and optical glass. 3 . 3 . The method for hot pressing of micro-nano optical waveguide mirror surface according to claim 2 , wherein when the optical waveguide lens is made of acrylic material, a temperature of at least 70 degrees is used for thermal melting and softening. When it is lens glass, use at least 400 degrees for hot melt softening. 4 . The method of claim 1 , wherein when the optical channel texture is imprinted on the optical waveguide lens, the width and depth are 200-400 nm and 50 nm in depth. 5 . -100nm. 5 . The method for hot pressing of a micro-nano optical waveguide mirror surface according to claim 1 , wherein the pressing mold and the optical waveguide mirror have the same radian when they are attached. 6 . 6 . The method for hot pressing of a micro-nano optical waveguide mirror surface according to claim 1 , wherein the pressing mold and the hot-melt softened optical waveguide mirror are pressed together in a vacuum state. 7 . , and press-fitting under standard atmospheric pressure, when pressing in a vacuum state, first align the pressing mold with the optical waveguide lens after hot melt softening, put it into the container to be evacuated, and then vacuumize and press combine. 7 . The method for hot pressing of a mirror surface of a micro-nano optical waveguide according to claim 1 , wherein the pressing mold is a new chrome compact structure that is not easily deformed. 8 . 8 . The method of claim 1 , wherein the pressing mold is an integral structure. 9 . 9 . The method for hot pressing of a mirror surface of a micro-nano optical waveguide according to claim 1 , wherein the top of the pressing mold is connected to a manipulator driven by a motor. 10 . 10 . The method of claim 1 , wherein the micro-nano optical channel pattern on the embossing mold is formed by electrical excitation engraving through a resonant cavity composed of nanowires. 11 . .

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