Augmented reality module and augmented reality glasses

Abstract

The utility model discloses an augmented reality module and augmented reality glasses, and relates to the technical field of augmented reality. The augmented reality module comprises an optical machine which comprises a light emitting area; the optical waveguide comprises a coupling-in area and a coupling-out area, and the coupling-in area and the light emitting area are oppositely arranged; the dustproof structure is a cavity with two open ends, an image light beam can pass through the cavity, a first port of the cavity wraps the coupling-in area and is connected with the optical waveguide, a second port of the cavity is used for wrapping the light-out area and is connected with the optical machine, and the dustproof structure is used for enabling the coupling-in area and the light-out area to be located in the same sealed cavity. According to the augmented reality module provided by the embodiment of the utility model, the dustproof structure is arranged between the light-emitting area of the optical machine and the coupling-in area of the optical waveguide, so that dust is prevented from appearing between the light-emitting area and the coupling-in area, and the cost is reduced when the augmented reality module implements an active alignment process.

Description

Technical Field

[0001] The utility model relates to the technical field of augmented reality, and in particular to an augmented reality module and augmented reality glasses. Background Art

[0002] Augmented Reality (AR) technology is a technology that cleverly integrates virtual information with the real world. At present, the display part of AR glasses is mainly composed of AR optical waveguide and AR optical machine. The AR optical machine projects the image to the coupling area of ​​the AR optical waveguide, and then couples out through the coupling area of ​​the AR optical waveguide into the human eye. The preparation process of AR glasses involves the active alignment process (Active Alignment, AA) of the AR optical waveguide and the AR optical machine. The active alignment equipment is used to actively align the positions of the AR optical waveguide and the AR optical machine according to the actual situation to ensure the display performance of the AR glasses.

[0003] Since the light output area of ​​the AR optical machine and the coupling area of ​​the AR optical waveguide are relatively small, and after assembly, the light output area of ​​the AR optical machine and the coupling area of ​​the AR optical waveguide will be wrapped by the peripheral structure, if dust appears between the light output area and the coupling area during assembly, then the entire assembly structure needs to be dismantled for dust removal in the later stage, which results in high maintenance costs. In order to avoid dust between the light output area of ​​the AR optical machine and the coupling area of ​​the AR optical waveguide during assembly, the active alignment process of AR glasses is generally carried out in a Class 100 dust-free workshop. However, the problem is that the cost of using a Class 100 dust-free workshop is relatively high, and after active alignment, the AR glasses need to be transported to the whole machine production workshop for other assembly, which poses a risk of damage during transportation. Utility Model Content

[0004] The embodiments of the utility model provide an augmented reality module and augmented reality glasses, wherein a dustproof structure is arranged between the light output area of ​​the optical machine and the coupling area of ​​the optical waveguide. The dustproof structure arranges the coupling area and the light output area in the same sealed chamber to avoid dust from appearing between the light output area and the coupling area, thereby reducing costs when implementing an active alignment process in the augmented reality module.

[0005] According to one aspect of the present invention, an augmented reality module is provided, comprising:

[0006] Light machine, including light exit area;

[0007] The optical waveguide comprises an incoupling region and an outcoupling region, wherein the incoupling region is arranged opposite to the light output region;

[0008] The dustproof structure is a cavity with openings at both ends, through which the image light beam can pass. The first port of the cavity covers the coupling-in area and is connected to the optical waveguide. The second port of the cavity is used to cover the light-out area and is connected to the optical machine. The dustproof structure is used to place the coupling-in area and the light-out area in the same sealed chamber.

[0009] Optionally, one of the ports in the dust-proof structure has six degrees of freedom in space relative to the other port.

[0010] Optionally, at least a portion of the cavity is a corrugated cavity, and the corrugated cavity is a plastic corrugated cavity.

[0011] Optionally, at least a portion of the cavity is a flexible cavity, and the flexible cavity is an elastic rubber flexible cavity or a flexible cloth flexible cavity.

[0012] Optionally, the first port is connected to the optical waveguide by gluing, and / or the second port is connected to the optical engine by gluing.

[0013] Optionally, the first port is fixedly connected to the optical waveguide via a snap-fit ​​assembly or a bolt assembly, and / or the second port is fixedly connected to the optical engine via a snap-fit ​​assembly or a bolt assembly.

[0014] Optionally, the snap-on assembly includes a protrusion and a slot that are arranged in pair, the protrusion is arranged on the optical engine or the optical waveguide, and the slot is arranged on a corresponding port of the dustproof structure.

[0015] Optionally, the bolt assembly includes a paired screw hole, a bolt, and a gasket with a screw hole, the screw hole is arranged on the optical machine or the optical waveguide, and the gasket is arranged on a corresponding port of the dustproof structure.

[0016] Optionally, the dustproof structure is black in color.

[0017] According to another aspect of the present invention, there is provided an augmented reality glasses, comprising the augmented reality module as described above.

[0018] The augmented reality module and augmented reality glasses provided by the embodiment of the utility model are provided with a dustproof structure between the light output area of ​​the optical machine and the coupling-in area of ​​the optical waveguide, the first port of the dustproof structure is connected to the optical waveguide, the coupling-in area is enclosed in the cavity, the second port of the dustproof structure is connected to the optical machine, the light output area is enclosed in the cavity, and the coupling-in area and the light output area are arranged in the same sealed chamber. By providing the dustproof structure, dust is prevented from appearing between the coupling-in area and the light output area, which affects the display performance of the augmented reality module, and the maintenance cost is reduced. The optical machine and the optical waveguide can be actively aligned in a production workshop with a lower cleanliness level, thereby reducing the production cost.

[0019] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the side structure of the first augmented reality module provided by an embodiment of the utility model;

[0022] Figure 2 A side view structural diagram of a second augmented reality module provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] Figure 1 A side view structural diagram of the first augmented reality module provided by the embodiment of the utility model, referring to Figure 1 , the augmented reality module includes an optical machine 10, an optical waveguide 20 and a dustproof structure 30. Among them, the optical machine 10 includes a light-emitting area 101, which is used to emit an image beam to form an image; the optical waveguide 20 includes a coupling-in area 201 and a coupling-out area 202, the coupling-in area 201 is arranged opposite to the light-emitting area 101, the coupling-in area 201 is used to receive the image beam, the optical waveguide 20 transmits the image beam, and the coupling-out area 202 is used to couple the image beam to the human eye; the dustproof structure 30 is a cavity with openings at both ends, which can pass the image beam, the first port 301 of the cavity covers the coupling-in area 201 and is connected to the optical waveguide 20, the second port 302 of the cavity is used to cover the light-emitting area 101 and is connected to the optical machine 10, and the dustproof structure 30 is used to place the coupling-in area 201 and the light-emitting area 101 in the same sealed chamber. Exemplarily, the image light beam is emitted from the light emitting area 101, transmitted to the coupling-in area 201 of the optical waveguide 20 for incidence, and the image light beam is transmitted to the coupling-out area 202 in the optical waveguide 20, and coupled out in the coupling-out area 202 for transmission to the human eye. The size and type of the optical waveguide 20 and the optical machine 10 can be set according to actual conditions, and the embodiment of the utility model does not specifically limit this.

[0026] Among them, the light exit area 101 of the optical engine 10 and the coupling area 201 of the optical waveguide 20 are both relatively small and arranged relatively to each other. If there is dust, the display effect will be seriously affected. Moreover, after assembly, the dust in the light exit area 101 of the optical engine 10 and the coupling area 201 of the optical waveguide 20 cannot be directly removed, and the dust can only be removed after disassembly, which has a high maintenance cost. Furthermore, the utility model solves the above problem by setting a dustproof structure 30 between the light exit area 101 and the coupling area 201.

[0027] Exemplarily, the dustproof structure 30 is a cavity with openings at both ends, which is arranged between the light-exiting area 101 and the coupling-in area 201, and is used to arrange the coupling-in area 201 and the light-exiting area 101 in the same sealed chamber to prevent dust from appearing between the coupling-in area 201 and the light-exiting area 101 and affecting the display performance of the augmented reality module. The first port 301 of the dustproof structure 30 covers the coupling-in area 201, and the coupling-in area 201 is separated from the external environment by the dustproof structure 30, and dust in the external environment will not enter the coupling-in area 201. The first port 301 is connected to the optical waveguide 20 to ensure that the coupling-in area 201 is completely wrapped in the dustproof structure 30, thereby improving the dustproof effect; the second port 302 of the dustproof structure 30 covers the light-exiting area 101 to prevent dust in the external environment from entering the light-exiting area 101, and the second port 302 is connected to the optical machine 10 to ensure that the light-exiting area 101 is completely wrapped in the dustproof structure 30. Among them, the shape, size and length of the dustproof structure 30 are set according to the shape and size of the light output area 101 of the optical machine 10 and the shape and size of the coupling area 201 of the optical waveguide 20, ensuring that the size of the augmented reality module is reduced without affecting the incident image light beam on the coupling area 201, thereby facilitating the assembly of the augmented reality glasses. The embodiment of the utility model does not make specific limitations on this.

[0028] As an example, the size of the light exiting area 101 is the same as the size of the coupling-in area 201, and the size of the first port 301 of the dustproof structure 30 is the same as the size of the second port 302. In other embodiments, the size of the first port 301 is different from the size of the second port 302, and the utility model does not specifically limit this. For example, the dustproof structure 30 can be a dustproof sleeve, and the port can be circular, regular polygonal, rectangular, etc., and its shape is based on the matching coupling-in area 201 and the light exiting area 101.

[0029] The technical solution provided by the embodiment of the utility model is to set a dustproof structure 30 between the light output area 101 of the optical machine 10 and the coupling area 201 of the optical waveguide 20, the first port 301 of the dustproof structure 30 is connected to the optical waveguide 20, and the coupling area 201 is enclosed in the cavity, and the second port 302 of the dustproof structure 30 is connected to the optical machine 10, and the light output area 101 is enclosed in the cavity, and the coupling area 201 and the light output area 101 are set in the same sealed chamber. By setting the dustproof structure 30, dust is prevented from appearing between the coupling area 201 and the light output area 101, which affects the display performance of the augmented reality module, and the maintenance cost is reduced. The optical machine 10 and the optical waveguide 20 can be actively aligned in a production workshop with a lower cleanliness level, which reduces the cost. The augmented reality module does not need to be transported to the whole machine production workshop for assembly, which reduces the risk of damage during transportation.

[0030] Optionally, one of the ports in the dustproof structure 30 has six degrees of freedom in space relative to the other port. The first direction X is parallel to the direction in which the optical waveguide 20 transmits the image light beam, the second direction Y is perpendicular to the first direction X, and the third direction Z is parallel to the direction in which the optical machine 10 emits the image light beam to the optical waveguide 20. Exemplarily, the first port 301 of the dustproof structure 30 can translate or rotate relative to the second port 302 along the first direction X or in the direction opposite to the first direction X, the first port 301 can translate or rotate relative to the second port 302 along the second direction Y or in the direction opposite to the second direction Y, and the first port 301 can translate or rotate relative to the second port 302 along the third direction Z or in the direction opposite to the third direction Z. When the augmented reality module implements an active alignment process, the dustproof structure 30 can continuously cover the light-emitting area 101 and the coupling-in area 201 when the optical machine 10 moves or rotates, so as to prevent dust from affecting the display performance of the augmented reality module and improve the flexibility of the optical machine 10 and the optical waveguide 20 in the alignment process. In other embodiments, the second port 302 of the dustproof structure 30 can translate or rotate relative to the first port 301 along the first direction X, the second direction Y, and the third direction Z, and the embodiment of the utility model does not impose specific restrictions on this. The material of the dustproof structure 30 can be set according to actual conditions, and the embodiment of the utility model does not impose specific restrictions on this.

[0031] Figure 2 A side view structural diagram of a second augmented reality module provided by an embodiment of the utility model, referring to Figure 2 , at least part of the cavity is a corrugated pleated cavity, and the corrugated pleated cavity is a plastic corrugated pleated cavity. The corrugated pleated cavity has certain expansion and contraction and bending capabilities, and can translate or rotate along the first direction X, the second direction Y and the third direction Z. When the optical machine 10 and the optical waveguide 20 are actively aligned, the dustproof structure 30 can move according to the movement of the optical machine 10, and prevent dust from appearing in the light exit area 101 and the coupling area 201. At the same time, it will not affect the transmission of the image light beam into the coupling area 201 of the optical waveguide 20, and affect the display performance of the augmented reality module. The length and size of the corrugated pleated cavity can be set according to actual conditions. As an example, the corrugated pleated cavity is set in the middle section of the dustproof structure 30. In other embodiments, the dustproof structure 30 is entirely set as a corrugated pleated cavity, and the utility model does not make specific limitations on this.

[0032] Optionally, at least part of the cavity is a flexible cavity, and the flexible cavity is an elastic rubber flexible cavity or a flexible cloth flexible cavity. The flexible cavity is elastic, and when the optical machine 10 and the optical waveguide 20 are actively aligned, the light-emitting area 101 and the coupling-in area 201 can be covered when the optical machine 10 moves or rotates, so as to avoid dust between the coupling-in area 201 and the light-emitting area 101, which affects the display performance of the augmented reality module. The length and size of the flexible cavity can be set according to actual conditions, and the present invention does not impose specific restrictions on this.

[0033] Optionally, the first port 301 is connected to the optical waveguide 20 by gluing, and / or the second port 302 is connected to the optical machine 10 by gluing. Fixing by glue simplifies the process and reduces costs. As an example, the dustproof structure 30 is connected to the optical machine 10 and the optical waveguide 20 by UV glue, or the dustproof structure 30 is glued to the optical machine 10 by glue and connected to the optical waveguide 20 by other means, or the dustproof structure 30 is glued to the optical waveguide 20 by glue and connected to the optical machine 10 by other means. In other embodiments, the dustproof structure 30 can also be glued to the optical machine 10 and / or the optical waveguide 20 by thermosetting glue or AB glue. The type of glue can be set according to actual conditions, and the embodiment of the utility model does not impose specific restrictions on this.

[0034] Optionally, the first port 301 is fixedly connected to the optical waveguide 20 by a snap-fit ​​assembly or a bolt assembly, and / or the second port 302 is fixedly connected to the optical engine 10 by a snap-fit ​​assembly or a bolt assembly. The dustproof structure 30 is fixedly connected to the optical engine 10 and / or the optical waveguide 20 by a snap-fit ​​assembly or a bolt assembly, which facilitates the fixing of the dustproof structure, reduces the manufacturing cost, and ensures the dustproof effect of the dustproof structure 30.

[0035] Exemplarily, the snap-on assembly includes a protrusion and a slot arranged in pairs, the protrusion is arranged on the optical engine 10 or the optical waveguide 20, and the slot is arranged on the corresponding port of the dustproof structure 30. The optical engine 10 or the optical waveguide 20 has a protrusion, the edge of the first port 301 of the dustproof structure 30 has a slot corresponding to the optical waveguide 20, when the first port 301 is connected to the optical waveguide 20, the protrusion is embedded in the slot, the edge of the second port 302 of the dustproof structure 30 has a slot corresponding to the optical engine 10, when the second port 302 is connected to the optical engine 10, the protrusion is embedded in the slot, the process is simple, and the cost is reduced.

[0036] Exemplarily, the bolt assembly includes a screw hole, a bolt, and a gasket with a screw hole, which are arranged in pairs. The screw hole is arranged on the optical engine 10 or the optical waveguide 20, and the gasket is arranged on the corresponding port of the dustproof structure 30. The optical engine 10 or the optical waveguide 20 has a screw hole, and the edge of the first port 301 of the dustproof structure 30 has a gasket corresponding to the optical waveguide 20. When the first port 301 is connected to the optical waveguide 20, the screw hole and the gasket form a threaded connection. The edge of the second port 302 of the dustproof structure 30 has a gasket corresponding to the optical engine 10. When the second port 302 is connected to the optical engine 10, the screw hole and the gasket form a threaded connection, which facilitates the fixing of the dustproof structure, simplifies the process, and reduces costs.

[0037] Optionally, the color of the dustproof structure 30 is black. The black dustproof structure 30 can absorb stray light transmitted to the dustproof structure 30 when the image light beam is transmitted, and reduce the external ambient light incident on the coupling area 201 of the optical waveguide 20, thereby ensuring the display performance of the augmented reality module. In other embodiments, the color of the dustproof structure 30 can also be set to other colors that can absorb stray light.

[0038] Based on the same technical concept, the embodiment of the utility model further provides an augmented reality glasses, which includes the augmented reality module provided by any one of the embodiments of the utility model. Therefore, the augmented reality glasses provided by the embodiment of the utility model have the corresponding beneficial effects of the augmented reality module provided by the embodiment of the utility model, which will not be repeated here.

[0039] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An augmented reality module, characterized in that: include: Light machine, including light exit area; The optical waveguide comprises an incoupling region and an outcoupling region, wherein the incoupling region is arranged opposite to the light output region; The dustproof structure is a cavity with openings at both ends, which can pass the image light beam. The first port of the cavity covers the coupling-in area and is connected to the optical waveguide. The second port of the cavity is used to cover the light-out area and is connected to the optical machine. The dustproof structure is used to place the coupling-in area and the light-out area in the same sealed chamber.

2. The augmented reality module according to claim 1, characterized in that: One of the ports in the dust-proof structure has six degrees of freedom in space relative to the other port.

3. The augmented reality module according to claim 2, characterized in that: At least a portion of the cavity is a corrugated cavity, and the corrugated cavity is a plastic corrugated cavity.

4. The augmented reality module according to claim 2, characterized in that: At least a portion of the cavity is a flexible cavity, and the flexible cavity is an elastic rubber flexible cavity or a flexible cloth flexible cavity.

5. The augmented reality module according to claim 1, characterized in that: The first port is connected to the optical waveguide by gluing, and / or the second port is connected to the optical engine by gluing.

6. The augmented reality module according to claim 1, characterized in that: The first port is fixedly connected to the optical waveguide via a clamping assembly or a bolt assembly, and / or the second port is fixedly connected to the optical engine via a clamping assembly or a bolt assembly.

7. The augmented reality module according to claim 6, characterized in that: The snap-on assembly comprises a protrusion and a slot that are arranged in a matching manner, wherein the protrusion is arranged on the optical engine or the optical waveguide, and the slot is arranged on a corresponding port of the dustproof structure.

8. The augmented reality module according to claim 6, characterized in that: The bolt assembly includes a paired screw hole, a bolt, and a gasket with the screw hole, the screw hole is arranged on the optical machine or the optical waveguide, and the gasket is arranged on the corresponding port of the dustproof structure.

9. The augmented reality module according to claim 1, characterized in that: The color of the dustproof structure is black.

10. An augmented reality glasses, characterized in that: The invention comprises the augmented reality module as described in any one of claims 1 to 9.

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