A resin optical waveguide lens and its preparation method

Abstract

The present invention provides a resin optical waveguide lens and a preparation method thereof, and relates to the technical field of resin optical waveguide AR lenses. Aiming at the defects of resin optical waveguide components such as fragility, easy contamination, and large mass, and in order to meet the myopia correction needs of users, the present invention prepares the resin optical waveguide lens by coating a resin optical waveguide component layer with a conventional resin lens, provides a preparation method of the resin optical waveguide lens that can be formed in one step, and provides conditions for subsequent processing with different light intensity requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of resin optical waveguide lenses for AR glasses, and in particular to a resin optical waveguide lens and a preparation method thereof. Background Art

[0002] XR immersive Internet technology is changing the way we interact with the digital world. XR technology includes virtual reality (VR) glasses and augmented reality (AR) glasses, which provide users with an immersive experience. Unlike the relatively mature VR glasses, AR glasses have greater application potential because they can overlay virtual information in the user's field of view and enhance the sense of reality.

[0003] As one of the key components of AR glasses, resin optical waveguide lenses have high light efficiency and are thin and light. However, the current raw materials are mainly glass, which has defects such as large mass, fragility, susceptibility to contamination, and complex processing methods. At the same time, in the face of different myopia correction needs of users, the light requirements for AR glasses are getting higher and higher. Therefore, in view of this situation, it is urgent to develop a simple, efficient, thin and light resin optical waveguide lens preparation method that can be used for myopia correction. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a resin optical waveguide lens and a preparation method thereof, so as to solve one or more of the above-mentioned problems in the prior art.

[0005] On the one hand, to achieve the above-mentioned purpose, the present invention provides a resin optical waveguide lens, including a lens body, wherein the lens body includes a first resin lens, a resin optical waveguide lens and a second resin lens from top to bottom, the thickness of the first resin lens is 0.2 to 0.6 mm, the thickness of the resin optical waveguide lens is 40 to 50 μm, and the thickness of the second resin lens is 0.2 to 30 mm.

[0006] In some embodiments, the refractive index of the first resin lens and the second resin lens is 1.499, 1.56, 1.6, 1.67 or 1.74.

[0007] On the other hand, the present invention provides a method for preparing a resin optical waveguide lens, comprising the following steps:

[0008] S1. Select a resin optical waveguide lens with an undamaged surface and a thickness of 40 to 50 μm as a resin optical waveguide element, and clean it until there is no dirt on the surface;

[0009] S2, fix the resin optical waveguide lens with a rubber ring, take the cleaned glass mold upper mold and glass mold lower mold to close the mold, form an upper cavity between the glass mold upper mold and the resin optical waveguide lens, and form a lower cavity between the glass mold lower mold and the resin optical waveguide lens, and fix them with tape;

[0010] S3, tear a small hole in the tape, inject the raw material liquid into the mold cavity until it is full, and then seal it with tape. After curing and molding with different curing temperature curves selected according to the raw material liquid, remove the mold to obtain the required resin optical waveguide lens.

[0011] In some embodiments, in step S2, the distance between the upper mold of the glass mold and the resin optical waveguide lens is 0.2-0.6 mm, and the distance between the lower mold of the glass mold and the resin optical waveguide lens is 0.2-30 mm.

[0012] In some embodiments, in step S3, the raw material liquid is one of five resin lens raw materials with refractive indices of 1.499, 1.56, 1.60, 1.67, and 1.74.

[0013] In some embodiments, in step S3, the curing temperature is between 30 and 120° C., and the curing time is between 17 and 48 hours.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The present invention prepares the lens by fixing the resin optical waveguide lens with a rubber ring, effectively controlling the position of the resin optical waveguide element in the lens, and using the resin lens to provide protection for the resin optical waveguide element, and the lens is cured and formed in one step.

[0016] (2) Compared with the current mainstream method for preparing resin optical waveguide lenses, the present invention provides different resin synthetic liquids to prepare resin optical waveguide lenses, providing solutions for users with different myopia correction needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the layers of a processable layered resin optical waveguide lens;

[0018] Figure 2 Three views of rubber rings, two in a group, used to fix resin optical waveguide components;

[0019] Figure 3 This is a schematic diagram of the mold after mold closing. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Embodiment 1:

[0022] like Figure 1 As shown:

[0023] A resin optical waveguide lens comprises an upper resin lens 11, a resin optical waveguide lens 12 and a lower resin lens 13, wherein:

[0024] 1) If Figure 2 As shown, a resin optical waveguide lens with a thickness of 40 μm is selected as the resin optical waveguide element, and after cleaning, it is clamped in the rubber ring 22 and fixed. The resin optical waveguide element is fixed by the protrusion in the rubber ring 22, and the upper and lower rubber rings 22 are combined to proceed to the next step;

[0025] 2) If Figure 3 As shown, a glass mold with a clean working surface without traces is selected as a glass mold upper mold 21 and a glass mold lower mold 25, and the molds are closed by a mold closing machine, an upper cavity 22 is formed between the glass mold upper mold 21 and the resin optical waveguide lens, and a lower cavity 24 is formed between the glass mold lower mold 25 and the resin optical waveguide lens, the upper mold working surface is 0.2mm away from the resin optical waveguide component, and the lower mold working surface is 0.2mm away from the resin optical waveguide component, and the adhesive tape 26 is used to close the molds;

[0026] 3) Tear a hole in the tape 26 to expose the pouring port, inject the raw material liquid of the resin lens into the cavity until it is full, close the tape, and pouring is completed when there are no obvious bubbles.

[0027] 4) High temperature curing is performed according to the injected raw material liquid, and the mold is removed after curing and molding to obtain a product such as Figure 1 shown.

[0028] The embodiment of the present invention prepares the lens by fixing the resin optical waveguide lens with a rubber ring, effectively controls the position of the resin optical waveguide element in the lens, and uses the resin lens to provide protection for the resin optical waveguide element, and the lens is cured and formed in one step. Compared with the current mainstream method for preparing resin optical waveguide lenses, the present invention provides different resin synthetic liquids to prepare resin optical waveguide lenses, providing solutions for users with different myopia correction needs.

[0029] Finally, it should be noted that: technicians in this industry should understand that the present invention is not limited to the above-mentioned implementation cases. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A resin optical waveguide lens, characterized in that: The lens body comprises a first resin lens (11), a resin optical waveguide lens (12) and a second resin lens (13) from top to bottom, the first resin lens (11) having a thickness of 0.2 to 0.6 mm, the resin optical waveguide lens (12) having a thickness of 40 to 50 μm, and the second resin lens (13) having a thickness of 0.2 to 30 mm.

2. A resin optical waveguide lens as claimed in claim 1, characterized in that: The refractive index of the first resin lens (11) and the second resin lens (13) is 1.499, 1.56, 1.6, 1.67 or 1.

74.

3. A method for preparing a resin optical waveguide lens, characterized in that: The following steps are involved: S1. Select a resin optical waveguide lens with an undamaged surface and a thickness of 40 to 50 μm as a resin optical waveguide element, and clean it until there is no dirt on the surface; S2, fix the resin optical waveguide lens with a rubber ring (22), take a clean glass mold upper mold (21) and a glass mold lower mold (25) to close the mold, form an upper cavity (22) between the glass mold upper mold (21) and the resin optical waveguide lens, and form a lower cavity (24) between the glass mold lower mold (25) and the resin optical waveguide lens, and fix them with tape (26); S3, tear a small hole in the adhesive tape (26), inject the raw material liquid into the mold cavity until it is full, and then seal it with the adhesive tape. After curing and molding with different curing temperature curves selected according to the raw material liquid, remove the mold to obtain the required resin optical waveguide lens.

4. The method for preparing a resin optical waveguide lens according to claim 3, characterized in that: In the step S2, the distance between the glass mold upper mold (21) and the resin optical waveguide lens is 0.2-0.6 mm, and the distance between the glass mold lower mold (25) and the resin optical waveguide lens is 0.2-30 mm.

5. The method for preparing a resin optical waveguide lens according to claim 3, characterized in that: In step S3, the raw material liquid is one of five kinds of resin lens raw materials with refractive index of 1.499, 1.56, 1.60, 1.67 and 1.

74.

6. The method for preparing a resin optical waveguide lens according to claim 3, characterized in that: In the step S3, the curing temperature is between 30 and 120° C., and the curing time is between 17 and 48 hours.

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