AR / 3D glasses component and preparation method thereof

Abstract

The invention belongs to the field of virtual reality equipment, and particularly relates to an AR / 3D glasses component and a preparation method thereof.The method comprises the steps that S1, a first cavity of an injection mold is designed according to the shape of an overall glasses component; s2, forming a second cavity and a third cavity by using a plurality of sub-molds, wherein the shapes of the inner surfaces of the second cavity and the third cavity are consistent with those of the outer surfaces of the hinging part and the clamping part respectively; S3, performing injection molding on a first resin mixture in the first cavity through a double-color injection molding process to form a first shape memory polymer; s4, a second resin mixture is injected into the second cavity and the third cavity to form a second shape memory polymer on the surface of the first shape memory polymer, and the second resin mixture comprises reversible polymerization photosensitive resin; and S5, carrying out heat preservation and demolding. The light response type SMP is injected on the surfaces of the hinge part and the clamping part of the glasses component through the double-shot molding process, the light change of the virtual environment can be quickly responded, and the user experience is improved.

Description

Technical Field

[0001] The invention belongs to the field of virtual reality equipment, and in particular relates to an AR / 3D glasses component and a preparation method thereof. Background Art

[0002] With the continuous advancement of science and technology, VR / AR / 3D imaging technology has penetrated into people's entertainment life. Since VR / AR devices need to be worn by different groups of people, shape memory alloy materials have begun to be used to prepare AR / 3D glasses.

[0003] However, alloys in the usual sense are expensive and bulky to wear, so people began to look for corresponding cheap alternatives, and shape memory polymer (SMP) alloys began to come into people's sight. Generally, responsive particles with a certain arrangement are added to the SMP, such as thermal responsive particles and electromagnetic responsive particles, and a predetermined external stimulus is used to form a predetermined deformation direction inside the SMP molecules.

[0004] However, whether it is shape memory metal alloys or shape memory polymer alloys, the existing deformation modes are relatively simple and not intelligent enough. For example, there are no obvious clamping / loosening prompts before and after the end of the game / movie, and different changes cannot be provided according to the plot of the game / movie. Therefore, there is an urgent need for a virtual reality device, such as AR / 3D glasses that can adaptively adjust the clamping force, to further enhance the user's virtual experience. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an AR / 3D glasses component and a preparation method thereof, aiming to provide light-responsive deformation capability for key parts of the AR / 3D glasses component to adapt to long-term wear by users.

[0006] According to a first aspect of the present invention, the present invention first provides a method for preparing an AR / 3D glasses component, wherein the AR / 3D glasses component comprises a main structure and a hinge part and a clamping part located at different positions of the main structure, and the preparation method comprises:

[0007] S1: designing the shapes of the male mold and the female mold of the injection mold according to the shapes of the main structure, the hinge part and the clamping part, and forming a first cavity using the male mold and the female mold;

[0008] S2: using a plurality of sub-molds to form a second cavity and a third cavity between the male mold and the female mold, wherein the inner surface shapes of the second cavity and the third cavity are respectively consistent with the outer surfaces of the hinge part and the clamping part:

[0009] S3: injecting a first resin mixture into the first cavity through a two-color injection molding process to form a first shape memory polymer, wherein the first resin mixture includes a matrix resin, a thermoplastic elastomer, and responsive particles, wherein the responsive particles are thermal responsive particles, and removing the sub-mold after cooling and molding;

[0010] S4: injecting a second resin mixture into the second cavity and the third cavity to form a second shape memory polymer on the surface of the first shape memory polymer, wherein the second resin mixture includes a reversibly polymerizable photosensitive resin;

[0011] S5: Keep warm, demould, and you are done.

[0012] According to one embodiment of the present invention, the matrix resin is one of PA, EVA, POM, PPS, and PBT, the thermoplastic elastomer is one of TPU, SBS, TEVA, EOC, and EEA, and the thermally responsive particles are carbon nanotubes.

[0013] According to one embodiment of the present invention, the heat deformation temperature of the first shape memory polymer is 38-50 degrees.

[0014] According to one embodiment of the present invention, the reversibly polymerizable photosensitive resin is a photosensitive resin containing a heteroarylethylene side chain.

[0015] According to one embodiment of the present invention, the second resin mixture further comprises 20-50%wt of the base resin.

[0016] According to one embodiment of the present invention, the thickness of the second cavity is 1 / 4-3 / 2 times the thickness of the hinge portion, and the thickness of the third cavity is 1 / 4-3 / 2 times the thickness of the clamping portion.

[0017] According to one embodiment of the present invention, step S2 also includes using a plurality of sub-molds to form a fourth cavity between the male mold and the female mold, wherein the inner surface shape of the fourth cavity is consistent with the outer surface of the main structure, and the thickness of the fourth cavity is not greater than 1 / 4 of the thickness of the main structure.

[0018] According to one embodiment of the present invention, in step S4, the second resin mixture in the fourth cavity also includes 0.1-2%wt of magnetic induction particles, and step S5 also includes applying a magnetic field of a predetermined direction to the fourth cavity during the insulation process, and the predetermined direction of the magnetic field is at an angle of 10-60 degrees to the surface direction of the main structure.

[0019] According to another aspect of the present invention, the present invention also provides an AR / 3D glasses component prepared by the above method.

[0020] According to one embodiment of the present invention, the AR / 3D glasses component is preferably a glasses temple or a glasses frame including a nose bridge.

[0021] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0022] 1. The present invention uses a two-color injection molding process to inject a light-responsive SMP on the surface of the hinge part and the clamping part of the eyeglass component, which can quickly respond to light changes in the virtual environment and improve user experience.

[0023] 2. The preferred two-color injection molding process of the present invention can further increase the deformation speed of the eyeglass components, greatly reducing the pain felt by users when wearing the glasses.

[0024] 3. The component prepared by the present invention has mechanical strength, high responsiveness and adaptive adjustment ability, and is suitable for long-term viewing / gaming. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of an AR / 3D glasses leg component prepared according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of an AR / 3D glasses frame component prepared according to an embodiment of the present invention.

[0027] Explanation of the accompanying drawings: 1-main structure; 2-first shape memory polymer; 3-second shape memory polymer; 4-hinge portion; 5-clamping portion; 6-eyeglass frame; 7-nose bridge. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] The present invention provides a method for preparing an AR / 3D glasses component, wherein the AR / 3D glasses component comprises a main structure and a hinge part and a clamping part located at different positions of the main structure, and the preparation method comprises:

[0030] S1: designing the shapes of the male mold and the female mold of the injection mold according to the shapes of the main structure, the hinge part and the clamping part, and forming a first cavity using the male mold and the female mold;

[0031] S2: using a plurality of sub-molds to form a second cavity and a third cavity between the male mold and the female mold, wherein the inner surface shapes of the second cavity and the third cavity are respectively consistent with the outer surfaces of the hinge part and the clamping part:

[0032] S3: injecting a first resin mixture into the first cavity through a two-color injection molding process to form a first shape memory polymer, wherein the first resin mixture includes a matrix resin, a thermoplastic elastomer, and responsive particles, wherein the responsive particles are thermal responsive particles, and removing the sub-mold after cooling and molding;

[0033] S4: injecting a second resin mixture into the second cavity and the third cavity to form a second shape memory polymer on the surface of the first shape memory polymer, wherein the second resin mixture includes a reversibly polymerizable photosensitive resin;

[0034] S5: Keep warm, demould, and you are done.

[0035] In some embodiments, the matrix resin is selected from engineering plastics with certain mechanical properties, such as PA, EVA, POM, PPS, PBT, etc., the thermoplastic elastomer is one of TPU, SBS, TEVA, EOC, EEA, and the thermally responsive particles are inorganic thermally responsive particles, such as carbon nanotubes.

[0036] In some embodiments, the thermal deformation temperature of the first shape memory polymer is 38-50 degrees, which should not exceed the human body temperature too much.

[0037] In some embodiments, the reversibly polymerizable photosensitive resin is a photosensitive resin containing a heteroaryl vinyl side chain, as shown in the following formula (1), wherein Y=O, S, NH, m, n are natural numbers greater than 1, R 1 =H,F,Cl,Br,CN,SO 3 H.

[0038]

[0039] In some embodiments, in order to improve the injection fusion effect of two-color injection molding, 20-50%wt of the same base resin as that in the first resin mixture may be added to the second resin mixture.

[0040] In some embodiments, in order to speed up the deformation recovery speed, the thickness of the second shape memory polymer can be appropriately increased, that is, the thickness of the second cavity is set to be no less than 1 / 4 times the thickness of the hinge part during the injection molding stage. Similarly, the thickness of the third cavity can also be set to be no less than 1 / 4 times the thickness of the clamping part. Of course, the thickness should not be higher, which may cause the mechanical stability of the surface of the hinge or the clamping part to decrease. 1 / 4-3 / 2 times the thickness is appropriate.

[0041] In some embodiments, step S2 also includes using multiple sub-molds to form a fourth cavity between the male mold and the female mold, and the inner surface shape of the fourth cavity is consistent with the outer surface of the main structure. The thickness of the fourth cavity is not more than 1 / 4 of the thickness of the main structure, so as to control the thickness of the second shape memory polymer of the main structure not to be too thick, that is, not to significantly affect the deformation transfer of the hinge or the clamping part.

[0042] In some embodiments, in step S4, the second resin mixture in the fourth cavity also includes 0.1-2%wt of magnetic induction particles, and step S5 also includes applying a magnetic field of a predetermined direction to the fourth cavity during the insulation process, and the predetermined direction of the magnetic field is at an angle of 10-60 degrees to the surface direction of the main body structure, mainly to enable the deformation direction of the second shape memory polymer on the surface of the main body to better adapt to the deformation transfer of the hinge or the clamping part, or to prevent the clamping part from being too tight and difficult to remove, or to reduce the pressure of the main structure on the human body, by forming a certain decomposition deformation force in other directions to further clamp the human body when the external light intensity changes, or to appropriately relax the contact distance between the main structure and the human body.

[0043] The following are specific embodiments:

[0044] Example 1

[0045] This embodiment provides a method for preparing AR / 3D glasses legs, specifically:

[0046] S1: designing the shapes of the male mold and the female mold of the injection mold according to the main structure, the hinge part and the clamping part of the glasses leg, and forming a first cavity by using the male mold and the female mold;

[0047] S2: using a plurality of sub-molds to form a second cavity and a third cavity between the male mold and the female mold, wherein the inner surface shapes of the second cavity and the third cavity are respectively consistent with the outer surfaces of the hinge part and the clamping part:

[0048] S3: Injecting a first resin mixture into the first cavity through a two-color injection molding process to form a first shape memory polymer, wherein the first resin mixture includes 50-60%wt EVA, 35-45%wt thermoplastic elastomer TPU, 0.1-2%wt thermal responsive particle carbon nanotubes, and 1-2%wt plasticizer, the injection temperature is 170-190 degrees, and the sub-mold is removed after cooling for 1-2 hours and molding;

[0049] S4: Injecting a second resin mixture into the second cavity and the third cavity to form a second shape memory polymer on the surface of the first shape memory polymer, the thickness of the second cavity and the third cavity is 3 / 4 times the thickness of the hinge part and the clamping part, and the second resin mixture includes 85-98%wt of a reversibly polymerizable photosensitive resin, 0.01-1% of a photoinitiator, 0.01-1% of a photoinitiator auxiliary, and 0.01-1% of a toughening agent;

[0050] S5: Keep warm at 50-80 degrees for 1-2 hours, demould and you are done.

[0051] Example 2

[0052] This embodiment provides a method for preparing AR / 3D glasses legs, specifically:

[0053] S1: designing the shapes of the male mold and the female mold of the injection mold according to the main structure, the hinge part and the clamping part of the glasses leg, and forming a first cavity by using the male mold and the female mold;

[0054] S2: A second cavity, a third cavity, and a fourth cavity are formed between the male mold and the female mold using a plurality of sub-molds, wherein the inner surface shapes of the second cavity, the third cavity, and the fourth cavity are respectively consistent with the outer surfaces of the hinge part, the clamping part, and the main structure:

[0055] S3: Injecting a first resin mixture into the first cavity through a two-color injection molding process to form a first shape memory polymer, wherein the first resin mixture includes 50-60%wt EVA, 35-45%wt thermoplastic elastomer TPU, 0.1-2%wt thermal responsive particle carbon nanotubes, and 1-2%wt plasticizer, the injection temperature is 170-190 degrees, and the sub-mold is removed after cooling for 1-2 hours and molding;

[0056] S4: Injecting a second resin mixture into the second cavity, the third cavity and the fourth cavity to form a second shape memory polymer on the surface of the first shape memory polymer, the thickness of the second cavity and the third cavity is 3 / 2 times the thickness of the hinge part and the clamping part, the thickness of the fourth cavity is 1 / 4 of the thickness of the main structure, and the second resin mixture includes 20-50%wt of EVA, 45-68%wt of reversibly polymerizable photosensitive resin, 0.01-1% of photoinitiator, 0.01-1% of photoinitiator auxiliary, and 0.01-1% of toughening agent;

[0057] S5: Keep warm at 50-80 degrees for 1-2 hours, demould and you are done.

[0058] Example 3

[0059] This embodiment provides a method for preparing AR / 3D glasses legs, specifically:

[0060] S1: designing the shapes of the male mold and the female mold of the injection mold according to the main structure, the hinge part and the clamping part of the glasses leg, and forming a first cavity by using the male mold and the female mold;

[0061] S2: A second cavity, a third cavity, and a fourth cavity are formed between the male mold and the female mold using a plurality of sub-molds, wherein the inner surface shapes of the second cavity, the third cavity, and the fourth cavity are respectively consistent with the outer surfaces of the hinge part, the clamping part, and the main structure:

[0062] S3: Injecting a first resin mixture into the first cavity through a two-color injection molding process to form a first shape memory polymer, wherein the first resin mixture includes 50-60%wt EVA, 35-45%wt thermoplastic elastomer TPU, 0.1-2%wt thermal responsive particle carbon nanotubes, and 1-2%wt plasticizer, the injection temperature is 170-190 degrees, and the sub-mold is removed after cooling for 1-2 hours and molding;

[0063] S4: Injecting a second resin mixture into the second cavity, the third cavity and the fourth cavity to form a second shape memory polymer on the surface of the first shape memory polymer, the thickness of the second cavity and the third cavity is 3 / 2 times the thickness of the hinge part and the clamping part, the thickness of the fourth cavity is 1 / 4 of the thickness of the main structure, the second resin mixture in the second cavity and the third cavity includes 20-50%wt of EVA, 45-68%wt of reversibly polymerizable photosensitive resin, 0.01-1% of photoinitiator, 0.01-1% of photoinitiator aid, and 0.01-1% of toughening agent, and the second resin mixture in the fourth cavity includes 83-96%wt of reversibly polymerizable photosensitive resin, 0.01-1% of photoinitiator, 0.01-1% of photoinitiator aid, 0.01-1% of toughening agent and 0.1-2%wt of magnetic response particles;

[0064] S5: Keep warm at 50-80 degrees for 1-2 hours, apply a magnetic field in a predetermined direction to the fourth cavity during the heat preservation process, the predetermined direction of the magnetic field and the surface direction of the main body structure form an angle of 10-60 degrees, demould, and obtain.

[0065] Example 4

[0066] This embodiment provides a method for preparing an AR / 3D glasses frame, specifically:

[0067] S1: Designing the shapes of the male and female molds of the injection mold according to the shapes of the main structure 1 of the eyeglass frame 6, the hinge part 4 and the clamping part 5 at the bridge of the nose, and forming a first cavity using the male and female molds;

[0068] S2: A second cavity and a third cavity are formed between the male mold and the female mold using a plurality of sub-molds, wherein the inner surface shapes of the second cavity and the third cavity are respectively consistent with the outer surfaces of the hinge portion 4 and the clamping portion 5 at the bridge of the nose:

[0069] S3: Injecting a first resin mixture into the first cavity through a two-color injection molding process to form a first shape memory polymer (not shown), wherein the first resin mixture includes 50-60%wt of EVA, 35-45%wt of thermoplastic elastomer TPU, 0.1-2%wt of thermally responsive particle carbon nanotubes, and 1-2%wt of plasticizer, the injection temperature is 170-190 degrees, and the sub-mold is removed after cooling for 1-2 hours and molding;

[0070] S4: Injecting a second resin mixture into the second cavity and the third cavity to form a second shape memory polymer 3 on the surface of the first shape memory polymer, the thickness of the second cavity and the third cavity is 3 / 4 times the thickness of the hinge part 4 and the clamping part 5, and the second resin mixture includes 85-98%wt of a reversibly polymerizable photosensitive resin, 0.01-1% of a photoinitiator, 0.01-1% of a photoinitiator auxiliary, and 0.01-1% of a toughening agent;

[0071] S5: Keep warm at 50-80 degrees for 1-2 hours, demould and you are done.

[0072] Comparative Example 1

[0073] This comparative example provides a method for preparing an AR / 3D glasses leg, specifically:

[0074] S1: designing the shapes of the male mold and the female mold of the injection mold according to the main structure, the hinge part and the clamping part of the glasses leg, and forming a cavity using the male mold and the female mold;

[0075] S2: Injecting a resin mixture into the mold cavity to form a shape memory polymer, the resin mixture includes 50-60%wt EVA, 35-45%wt thermoplastic elastomer TPU, 0.1-2%wt thermal responsive particle carbon nanotubes and 1-2%wt plasticizer, the injection temperature is 170-190 degrees, cooling for 1-2 hours and then demolding to obtain the shape memory polymer.

[0076] Application testing:

[0077] The eyeglass components prepared in Examples 1-4 and Comparative Example 1 were applied to a 3D cinema, and were scored based on the average actual experience of 100 users. The scoring system was 1-10 points, and the main items of investigation were thermal deformation response speed, black screen weakened clamping response, strong light enhanced clamping response, clamping force and plot matching degree, and average pain. The specific tests were:

[0078] Before the movie starts, the staff uniformly heats the eyeglass components prepared in Examples 1-4 and Comparative Example 1 for 5-10 minutes, records the thermal deformation response speed and distributes it to the audience. The audience then records the degree of clamping response weakened by the black screen before and at the end of the movie (depolymerization of the photosensitive resin), the degree of clamping response enhanced by the strong light during the tense or climax of the plot (polymerization of the photosensitive resin), as well as the matching degree of the clamping force and the plot throughout the movie and the average pain, as shown in Table 1 below.

[0079] Table 1 Application test scores of eyeglass components prepared in Examples 1-4 and Comparative Example 1

[0080]

[0081] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing an AR / 3D glasses component, wherein the AR / 3D glasses component comprises a main structure and hinge parts and clamping parts located at different positions of the main structure, characterized in that: The preparation method comprises: S1: designing the shapes of the male mold and the female mold of the injection mold according to the shapes of the main structure, the hinge part and the clamping part, and forming a first cavity using the male mold and the female mold; S2: using a plurality of sub-molds to form a second cavity and a third cavity between the male mold and the female mold, wherein the inner surface shapes of the second cavity and the third cavity are respectively consistent with the outer surfaces of the hinge part and the clamping part: S3: injecting a first resin mixture into the first cavity through a two-color injection molding process to form a first shape memory polymer, wherein the first resin mixture includes a matrix resin, a thermoplastic elastomer, and responsive particles, wherein the responsive particles are thermal responsive particles, and removing the sub-mold after cooling and molding; S4: injecting a second resin mixture into the second cavity and the third cavity to form a second shape memory polymer on the surface of the first shape memory polymer, wherein the second resin mixture includes a reversibly polymerizable photosensitive resin; S5: Keep warm, demould, and you are done.

2. The preparation method according to claim 1, characterized in that: The matrix resin is one of PA, EVA, POM, PPS, and PBT; the thermoplastic elastomer is one of TPU, SBS, TEVA, EOC, and EEA; and the thermally responsive particles are carbon nanotubes.

3. The preparation method according to claim 1, characterized in that: The heat deformation temperature of the first shape memory polymer is 38-50 degrees.

4. The preparation method according to claim 1, characterized in that: The reversibly polymerizable photosensitive resin is a photosensitive resin containing a heteroarylethylene side chain.

5. The preparation method according to claim 1, characterized in that: The second resin mixture further comprises 20-50%wt of the base resin.

6. The preparation method according to claim 1, characterized in that: The thickness of the second cavity is 1 / 4-3 / 2 times the thickness of the hinged portion, and the thickness of the third cavity is 1 / 4-3 / 2 times the thickness of the clamping portion.

7. The preparation method according to claim 1 or 5, characterized in that: Step S2 also includes using a plurality of sub-molds to form a fourth cavity between the male mold and the female mold, wherein the inner surface shape of the fourth cavity is consistent with the outer surface of the main structure, and the thickness of the fourth cavity is not greater than 1 / 4 of the thickness of the main structure.

8. The preparation method according to claim 7, characterized in that: In step S4, the second resin mixture in the fourth cavity also includes 0.1-2%wt magnetic induction particles; step S5 also includes applying a magnetic field of a predetermined direction to the fourth cavity during the insulation process, and the predetermined direction of the magnetic field is at an angle of 10-60 degrees to the surface direction of the main structure.

9. An AR / 3D glasses component prepared by the method according to any one of claims 1 to 8.

10. The AR / 3D glasses component according to claim 9, characterized in that: The AR / 3D glasses component is a glasses arm or a glasses frame including a nose bridge.

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