CN217112894U - Lens module and head-mounted equipment - Google Patents

Abstract

The application provides a lens module and head-mounted device, the lens module includes: vision correction lenses; and the optical adhesive layer is attached to the vision correction lens. In this way, can utilize the optical cement layer to use the vision correction lens attached on the head-mounted device for head-mounted device can have the vision correction function, so that the crowd who has eyesight problems such as myopia or hyperopia uses head-mounted device.

Description

Lens module and head-mounted equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a lens module and head-mounted equipment.

Background

Along with the continuous development and popularization of intelligent glasses, the functions that intelligent glasses can realize are more and more comprehensive, and the probability that people use intelligent glasses also increases by a wide margin. However, when facing a group with visual problems such as myopia or hyperopia, the existing smart glasses often cannot meet the use requirements of the group. Therefore, how to enable people with vision problems to normally use the smart glasses has become a main concern of industry personnel.

SUMMERY OF THE UTILITY MODEL

An aspect of the embodiments of the present application provides a lens module, the lens module includes: vision correction lenses; and the optical adhesive layer is attached to the vision correction lens.

An embodiment of the present application further provides a head-mounted device, including: the device comprises a device body, a display module and the lens module; the display module is arranged on the equipment body, and the optical adhesive layer is further attached to the light-emitting surface of the display module.

The lens module that this application embodiment provided, through on the lens is corrected to eyesight attached optical cement layer, can utilize optical cement layer to correct eyesight and add on head-mounted apparatus with eyesight lens for head-mounted apparatus can have eyesight correction function, so that the crowd who has eyesight problems such as myopia or hyperopia uses. Simultaneously, compare in the scheme to the crowd customization head-mounted apparatus that has the eyesight problem, the lens module convenient to use and low in production cost that this embodiment provided still need not extra fixed establishment and head-mounted apparatus and fixes when cooperation head-mounted apparatus uses, are favorable to alleviateing the pressure that the user received when wearing head-mounted apparatus, promote user's the comfort level of wearing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a head-mounted device 10 provided in an embodiment of the present application;

FIG. 2 is an assembled view of the display module 200 and the lens module 300 of FIG. 1;

FIG. 3 is a partial cross-sectional view of the display module 200 and the lens module 300 of FIG. 1 along line V-V;

FIG. 4 is a schematic diagram of a stacked structure of the lens module 300 in FIG. 2;

FIG. 5 is a cross-sectional view of another portion of the display module 200 and the lens module 300 of FIG. 1 along line V-V;

FIG. 6 is a schematic cross-sectional view of the display module 200 and the lens module 300 taken along line V-V in FIG. 1.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application describes a head-mounted device that may be an Augmented Reality (AR) or Virtual Reality (VR) device, such as augmented reality or virtual reality glasses. Of course, the head-mounted device may have other functions such as lighting and camera shooting besides augmented reality or virtual reality, which are not described herein. The following is a detailed description of the smart glasses with the head-mounted device as augmented reality or virtual reality.

In an example of augmented reality or virtual reality glasses, the head-mounted device may be configured to communicate data to and receive data from an external processing device through a signal connection, which may be a wired connection, a wireless connection, or a combination thereof. However, in other cases, the head mounted device may be used as a stand-alone device, i.e. the data processing is performed in the head mounted device itself. The signal connection may be configured to carry any kind of data, such as image data (e.g., still images and/or full motion video, including 2D and 3D images), audio, multimedia, voice, and/or any other type of data. The external processing device may be, for example, a gaming console, a personal computer, a tablet computer, a smart phone, or other type of processing device. The signal connection may be, for example, a Universal Serial Bus (USB) connection, a Wi-Fi connection, a bluetooth or Bluetooth Low Energy (BLE) connection, an ethernet connection, a cable connection, a DSL connection, a cellular connection (e.g., 3G, LTE/4G or 5G), etc., or a combination thereof. Additionally, the external processing device may communicate with one or more other external processing devices via a network, which may be or include, for example, a Local Area Network (LAN), a Wide Area Network (WAN), an intranet, a Metropolitan Area Network (MAN), the global internet, or a combination thereof.

The head-mounted device may have mounted therein display components, optics, sensors, processors, and the like. In the example of augmented reality or virtual reality glasses, the display component is designed to implement the functionality of the virtual reality glasses, for example, by projecting light into the user's eyes, or by projecting light into the user's eyes, overlaying an image on the user's view of their real-world environment. The head-mounted device may also include an ambient light sensor, and may also include electronic circuitry to control at least some of the above-described components and perform associated data processing functions. The electronic circuitry may include, for example, one or more processors and one or more memories.

Referring to fig. 1 to 2, fig. 1 is a schematic structural diagram of a head-mounted device 10 according to an embodiment of the present disclosure, and fig. 2 is an assembly diagram of a display module 200 and a lens module 300 in fig. 1.

The head-mounted device 10 provided by the embodiment of the application can be used for realizing the functions of a virtual reality or augmented reality environment. As shown in fig. 1 to 2, the head mounted device 10 may include: the apparatus body 100, the display module 200, and the lens module 300. The display module 200 may be disposed on the device body 100, and may present a virtual reality environment or an augmented reality environment under the control of the device body 100. The lens module 300 may be disposed on the light emitting surface 201 of the display module 200, and may be used to adjust the diopter of the display module 200, so that the user with the eyesight problems such as myopia or hyperopia may use the head-mounted device 10. In the embodiment, the lens module 300 has the advantages of convenient use and low production cost. Meanwhile, when the lens module 300 is used in cooperation with the display module 200, it is not necessary to fix the lens module with the display module 200 by an additional fixing mechanism, which is beneficial to reducing the pressure applied to the user when wearing the head-mounted device 10 and improving the wearing comfort of the user.

It can be understood that the light emitting surface 201 may be a surface of the display module 200 near the eyes of the user, and the image light displayed by the display module 200 can be emitted through the light emitting surface 201 and enter the eyes of the user for imaging.

Referring to FIG. 3, FIG. 3 is a schematic partial sectional view of the display module 200 and the lens module 300 of FIG. 1 along the V-V line.

The lens module 300 may be disposed on the light emitting surface 201 of the display module 200, and may be used to change the transmission path of the light, so as to adjust the diopter of the display module 200, and thus the head-mounted device 10 may have a vision correction function. As shown in fig. 3, the lens module 300 may include: vision correction lens 310, optical adhesive layer 320 and protective layer 330. The vision correction lens 310 can be used to adjust the diopter of the display module 200, so as to realize the vision correction function of the lens module 300. The optical adhesive layer 320 may be attached to the outer surface of the vision correction lens 310, and may be used to attach the vision correction lens 310 to the light emitting surface 201 of the display module 200. Protective layer 330 may be on the side of vision correcting lens 310 facing away from adhesive layer 320, which may be used to improve the abrasion and stain resistance of vision correcting lens 310.

So set up, when the user need use lens module 300, can utilize optical cement layer 320 to correct the attached plain noodles 201 on display module assembly 200 with the vision with lens 310 for head-mounted device 10 can have the vision correction function that is brought by lens 310 is corrected to the vision, so that the crowd who has the vision problem uses head-mounted device 10. Compare in the scheme to the crowd customization head-mounted apparatus 10 that has the eyesight problem, the lens module 300 convenient to use and low in production cost that this embodiment provided are convenient for carry out customization and mass production according to the crowd demand that has the eyesight problem to the head-mounted apparatus 10 of cooperation different styles uses. Meanwhile, when the lens module 300 is used in cooperation with the head-mounted device 10, it is not necessary to fix the lens module with the display module 200 by an additional fixing mechanism, which is beneficial to reducing the pressure applied to the user when wearing the head-mounted device 10 and improving the wearing comfort of the user.

The shape and size of the vision correction lens 310 can be matched with the display module 200 to improve the consistency of the display module 200 and the lens module 300. For example, when the light emitting surface 201 of the display module 200 is a plane, the surface of the vision correction lens 310 attached with the optical adhesive layer 320 can be designed as a plane, and when the light emitting surface 201 of the display module 200 is a curved surface, the surface of the vision correction lens 310 attached with the optical adhesive layer 320 can be designed as the same curved surface. Meanwhile, the orthographic projection of the vision correction lens 310 on the light emitting surface 201 can be located within the coverage of the light emitting surface 201, so as to prevent the edge of the vision correction lens 310 from protruding out of the display module 200 and affecting the appearance of the head-mounted device 10.

Preferably, the transverse dimension of the vision correction lens 310 may be exactly matched with the edge of the light emitting surface 201, or slightly smaller than the edge of the light emitting surface 201, so that when the user attaches the lens module 300, the user can attach the lens module by using the edge of the light emitting surface 201 as a reference object, so that the optical axis direction of the vision correction lens 310 after the attachment can be consistent with the optical axis direction of the display module 200, and the probability of deviation or skew attachment is reduced. Optionally, the shape and size of the vision correction lens 310 may not be consistent with the display module 200, and the specific shape design thereof may be adjusted according to the requirement.

As shown in fig. 3, the vision correction lens 310 may further have an optical surface 311, and the optical surface 311 may be used to change the propagation path of light to realize the vision correction function. For example, the optical surface 311 may be designed to be concave when facing a group with near vision problems, and the optical surface 311 may be designed to be convex when facing a group with far vision. The vision correction lens 310 can be a concave lens when the optical surface 311 is a concave surface, and the vision correction lens 310 can be a convex lens when the optical surface 311 is a convex surface. So configured, people with different myopia or hyperopia degrees can be matched by adjusting the shape of the optical surface 311.

In particular, the vision correcting lens 310 may be made of a high-transparency optical material. For example, the vision correction lens 310 may be formed by an injection molding process using a transparent resin material such as polyethylene terephthalate (PET), Polycarbonate (PC), polymethyl methacrylate (PMMA), cycloolefin polymer (COP), cycloolefin copolymer (COC), triallyl cyanurate (TAC), and the like. Thus, the vision correction lens 310 has the advantages of light weight and low production cost, which is beneficial to reducing the weight and cost of the lens module 300.

Alternatively, the vision correction lens 310 may also be made of a polymer material with certain flexibility, such as transparent rubber or gel, specifically, a material such as silicone rubber, ethylene propylene rubber, ethylene vinyl acetate, chlorohydrin rubber, butyl rubber, acrylate (PVC), and the like, and the shape required by the vision correction lens 310 is made by a common rubber processing process, such as plastication, kneading, calendering, extrusion, molding, vulcanization, and the like.

Alternatively, the vision correction lens 310 may be made of a hard inorganic material such as transparent glass or transparent ceramic, and preferably optical glass with a low softening point, and may be formed into the shape required by the vision correction lens 310 by a processing technique such as hot embossing, machining or etching. In this embodiment, the vision correction lens 310 is preferably made of a transparent resin material by an injection molding process, so that the production difficulty and cost can be effectively reduced.

The optical adhesive layer 320 may be attached to a surface of the vision correction lens 310 away from the optical surface 311, and may be used to fix the vision correction lens 310 on the light emitting surface 201 of the display module 200. As shown in fig. 3, one surface of the optical adhesive layer 320 may be attached to the light emitting surface 201, and the other surface may be attached to a surface of the vision correction lens 310 away from the optical surface 311, which may fill a gap between the vision correction lens 310 and the display module 200. Wherein, the optical adhesive layer 320 can have the characteristics of softness and plastic deformation, and it can also be recycled, so that the lens module 300 can be detachably connected with the display module 200, thereby improving the convenience of use of the lens module 300. Moreover, the lens module 300 with a specific diopter can be replaced by the lens module 300 with another diopter after being detached, so that the expensive display module 200 can be used by a plurality of people (for example, a family with different myopic powers).

The thickness of the optical adhesive layer 320 may be 1 to 100 μm, and specifically may be 1 μm, 5 μm, 10 μm, 20 μm, 25 μm, 30 μm, 40 μm, 50 μm, 70 μm, 100 μm, and the like. In the embodiment, the thickness of the optical adhesive layer 320 is preferably 5 to 20 μm, and specifically may be 5 μm, 10 μm, and 20 μm, and the optical adhesive layer 320 within this thickness range can maintain excellent adhesion, and the thickness of the lens module 300 is not excessively increased, which is beneficial to making the lens module 300 thin. Alternatively, the optical adhesive layer 320 is not limited to be attached on the side of the vision correction lens 310 away from the optical surface 311, and it can also be directly attached on the optical surface 311.

The protective layer 330 can be disposed on the optical surface 311 of the vision correction lens 310, which can be used to protect the vision correction lens 310 from exposure to the external environment. For example, the protection layer 330 may be a hardened layer or a hydrophobic layer, or may be a combination of the hardened layer and the hydrophobic layer. Wherein the hardened layer may be used to improve the wear resistance of the vision correction lens 310 and the hydrophobic layer may be used to improve the stain resistance of the vision correction lens 310. Of course, besides the hardened layer and the hydrophobic layer, the protective layer 330 may also be other protective laminates or combinations of various laminates, and the specific design thereof may be selected according to the requirements. For example, when the vision correction lens 310 is made of transparent glass, the protection layer 330 may be an explosion-proof film to prevent the vision correction lens 310 from damaging the eyes of the user when being broken, so as to improve the safety of the lens module 300. Alternatively, the protection layer 330 may be a colored film similar to sunglasses, which not only protects the vision correction lenses 310, but also enables the lens module 300 to have the effect of sunglasses. Optionally, in order to further reduce the production cost of the lens module 300, the design of the protection layer 330 may also be eliminated.

Referring to fig. 4, fig. 4 is a schematic view of a stacked structure of the lens module 300 in fig. 2.

Before the user attaches the lens module 300 to the light emitting surface 201 of the display module 200, in order to better preserve the lens module 300 and to prolong the service life of the lens module 300, the lens module 300 may further be provided with a release layer 340. As shown in fig. 4, the release layer 340 may be disposed on a surface of the optical adhesive layer 320 facing away from the vision correction lens 310, and may be used to isolate and protect the optical adhesive layer 320, so as to reduce the probability of the decrease in adhesion caused by dust deposition or scratching of the optical adhesive layer 320, thereby facilitating the repeated use of the optical adhesive layer 320 and prolonging the service life of the lens module 300. Accordingly, when the user needs to use the lens module 300, the release layer 340 can be directly peeled off from the optical adhesive layer 320, so that the optical adhesive layer 320 can be exposed and bonded with the light-emitting surface 201 of the display module 200.

Further, the release layer 340 can be reused, and when the user needs to use the lens module 300, the release layer 340 can be removed from the optical adhesive layer 320 and placed in a corresponding storage box. When the user does not need the lens module 300, the release layer 340 may be reattached to the optical adhesive layer 320 to protect the optical adhesive layer 320. The lateral dimension of the release layer 340 can also be designed to be slightly larger than the optical adhesive layer 320, so that a user can conveniently stick or peel the release layer 340. Optionally, in order to further reduce the production cost of the lens module 300, the design of the release layer 340 may also be eliminated, and the optical adhesive layer 320 may be protected by placing the lens module 300 in a corresponding storage box.

Through set up optical adhesive layer 320 in the one side that lens 310 deviates from optical surface 311 is corrected to the vision, can utilize optical adhesive layer 320 to correct lens 310 attached to display module assembly 200's play plain noodles 201 with the vision for head-mounted device 10 can have the vision correction function that is brought by lens 310 is corrected to the vision, so that the crowd who has the vision problem uses head-mounted device 10. Compare in the scheme to the crowd customization head-mounted apparatus 10 that has the eyesight problem, the lens module 300 convenient to use and low in production cost that this embodiment provided are convenient for carry out customization and mass production according to the crowd demand that has the eyesight problem to the head-mounted apparatus 10 of cooperation different styles uses. Meanwhile, when the lens module 300 is used in cooperation with the head-mounted device 10, it is not necessary to fix the lens module with the display module 200 by an additional fixing mechanism, which is beneficial to reducing the pressure applied to the user when wearing the head-mounted device 10 and improving the wearing comfort of the user.

Referring to FIG. 5, FIG. 5 is another partial sectional view of the display module 200 and the lens module 300 of FIG. 1 along the V-V line.

Optionally, in order to reduce the thickness of the lens module 300, the vision correction lens 310 may also be a fresnel lens. The Fresnel lens looks like a piece of glass with countless concentric circular lines (namely Fresnel zones), but can achieve the effect of a concave lens or a convex lens, and if the projection light source is parallel light, the brightness of all parts of the image can be kept consistent after the projection light is converged. Compared with the concave lens and the convex lens in the foregoing embodiments, the fresnel lens has the advantages of lighter weight, thinner thickness and smaller volume under the same conditions, and is more favorable for the light and thin design of the lens module 300. The specific optical principle of the fresnel lens can refer to the prior art, and the details of this embodiment are not described herein. As shown in fig. 5, one side of the vision correction lens 310 may have an optical texture 312, and the optical texture 312 includes a plurality of concentric circular textures, which may be used to change the propagation path of light to achieve a vision correction function. The concentric circle texture is in a sawtooth structure with symmetrical center line when being sectioned, and the central part is a circular arc part. Accordingly, the optical adhesive layer 320 can be attached to a surface of the vision correction lens 310 away from the optical texture 312, and the protective layer 330 can cover the optical texture 312 to protect the optical texture 312.

Further, since the optical texture 312 is a very fine and highly precise saw-like groove, when the protective layer 330 is formed on the optical texture 312, it is preferable to form the protective layer 330 by a dry coating method such as vacuum evaporation or sputtering to prevent the form of the optical texture 312 from being changed during the formation of the protective layer 330. Optionally, the design of the protective layer 330 may also be eliminated in order to reduce cost.

Further, the thickness of the vision correction lens 310 may be 0.1 to 3mm, and specifically may be 0.1mm, 0.3mm, 0.6mm, 1mm, and the like. In the present embodiment, the thickness of the vision correction lens 310 is preferably 0.3 to 1mm, and specifically may be 0.4mm or 0.5mm, and the vision correction lens 310 within this thickness range maintains superior optical performance without increasing the thickness of the lens module 300 too much. In particular, when the thickness of the vision correction lens 310 is less than 0.5mm, the vision correction lens 310 can be formed in a form similar to a pad pasting, so that the weight of the lens module 300 can be reduced to the minimum.

When the vision correction lens 310 is a fresnel lens, the material and the process thereof may be the same as or similar to those of the vision correction lens 310 in the previous embodiment, and the difference from the previous embodiment is that the vision correction lens 310 may be manufactured by a stamping process. For example, the vision correction lens 310 may use a transparent plastic film (including but not limited to polyethylene terephthalate (PET), Polycarbonate (PC), polymethyl methacrylate (PMMA), Cyclic Olefin Polymer (COP), Cyclic Olefin Copolymer (COC), triallyl cyanurate (TAC), etc.) as a substrate, then uniformly coat a UV-curable imprinting adhesive on the surface of the substrate, press a mold having a saw-toothed groove microstructure on the surface of the imprinting adhesive, and simultaneously irradiate the imprinting adhesive with a UV lamp to cure the imprinting adhesive, so that the saw-toothed groove microstructure on the mold can be transferred to the imprinting adhesive on the surface of the substrate, and form the vision correction lens 310 with the saw-toothed groove microstructure after demolding. In this embodiment, the vision correction lens 310 is preferably made of a transparent resin material by an injection molding process or an embossing process, which can effectively reduce the production difficulty and cost.

Referring to FIG. 6, FIG. 6 is a schematic cross-sectional view of another portion of the display module 200 and the lens module 300 of FIG. 1 along the V-V line.

As shown in fig. 6, the optical adhesive layer 320 may be attached to the optical texture 312 in addition to the surface of the vision correction lens 310 away from the optical texture 312, and the protection layer 330 may be disposed on the surface of the vision correction lens 310 away from the optical texture 312. That is, the positions of the optical adhesive layer 320 and the protective layer 330 may be interchanged. After the optical adhesive layer 320 is attached on the light emitting surface 201 of the display module 200, the optical texture 312 may be disposed toward the light emitting surface 201 of the display module 200, but not toward the eyes of the user. Therefore, the problem that the optical texture 312 is located outside and is easily scratched and damaged can be avoided, the probability of dust accumulation in the sawtooth-shaped groove of the optical texture 312 can be effectively reduced, and the optical performance of the vision correction lens 310 is ensured.

Further, since the optical adhesive layer 320 covers the optical texture 312, the optical adhesive layer 320 is filled in the zigzag grooves of the optical texture 312, in order to ensure that the optical performance of the vision correction lens 310 is not affected, the optical adhesive layer 320 may have a refractive index lower than that of the vision correction lens 310, and the larger the difference between the refractive indexes is, the more beneficial to design the reasonable optical texture 312.

The lens module 300 that the embodiment of the application provided, through attached optical cement layer 320 on vision correction lens 310, can utilize optical cement layer 320 to correct lens 310 and attach on head-mounted device 10 with vision for head-mounted device 10 can have the vision correction function, so that the crowd who has eyesight problems such as myopia or hyperopia uses. Simultaneously, compare in the scheme to the crowd customization head mounted device 10 that has the eyesight problem, the lens module 300 convenient to use and low in production cost that this embodiment provided, when cooperation head mounted device 10 uses, still need not extra fixed establishment and head mounted device 10 and fix, are favorable to alleviateing the pressure that the user received when wearing head mounted device 10, promote user's the comfort level of wearing.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. A lens module, comprising:

vision correction lenses;

and the optical adhesive layer is attached to the vision correction lens.

2. The lens module of claim 1, further comprising a protective layer;

the protective layer is located the vision correction lens deviates from the one side of optics glue film.

3. The lens module of claim 2, wherein the protective layer comprises: at least one of a hardening layer, a hydrophobic layer, an explosion-proof layer and a colored film.

4. The lens module of claim 1, further comprising a release layer;

the release layer is positioned on one surface of the optical adhesive layer deviating from the vision correction lens.

5. The lens module of claim 1, wherein the thickness of the optical adhesive layer is 1 to 100 μm, and the thickness of the vision correction lens is 0.1 to 3 mm.

6. The lens module of any one of claims 1 to 5, wherein the vision correction lens is a Fresnel lens and has an optical texture; the vision correction lens is made of any one of transparent resin, transparent rubber, transparent glass and transparent ceramic.

7. The lens module of claim 6, wherein the optical adhesive layer is attached to the optical texture.

8. The lens module as claimed in claim 6, wherein the optical adhesive layer is attached to a surface of the vision correcting lens facing away from the optical texture.

9. The lens module of any one of claims 1 to 5, wherein the vision correcting lens has an optical surface, and the optical adhesive layer is attached to a surface of the vision correcting lens facing away from the optical surface; wherein the optical surface is convex or concave.

10. A head-mounted device, characterized in that the head-mounted device comprises: an apparatus body, a display module, and the lens module of any one of claims 1-9;

the display module is arranged on the equipment body, and the optical adhesive layer is further attached to the light-emitting surface of the display module.

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