Optical Module and AR Glasses

Abstract

The present disclosure provides an optical module and an AR glasses, belonging to the technical field of AR. The optical module includes: a housing, a lens group, a display module, a waveguide display lens, and a connection structure; the lens group is located inside the housing; the display module is located outside the housing, and the display surface of the display module faces the lens group; a part of the waveguide display lens is located inside the housing, and another part of the waveguide display lens extends outside the housing, the light emitted by the display module passes through the lens group and propagates to the waveguide display lens, and total internal reflection occurs in the waveguide display lens to achieve display; the connection structure is located on the outer wall of the housing and is used to connect the housing between the temple and the frame of the AR glasses.

Description

Technical Field

[0001] The present disclosure relates to the field of AR technology, and in particular to an optical module and AR glasses. Background Art

[0002] Augmented Reality (AR) is a technology that cleverly integrates virtual information with the real world, for example, superimposing virtual information on real environment images.

[0003] AR glasses are a common AR device. In the related art, AR glasses are glasses with an optical module installed on the structure of glasses, and the image is output to the glasses lens for display through the optical module. This structure makes AR glasses larger in size and weight. Summary of the invention

[0004] The embodiments of the present disclosure provide an optical module and AR glasses, which reduce the volume and weight of AR glasses. The technical solution is as follows:

[0005] In one aspect, an optical module is provided, the optical module comprising: a housing, a lens group, a display module, an optical waveguide display lens, and a connection structure;

[0006] The lens group is located in the shell; the display module is located outside the shell, and the display surface of the display module faces the lens group; a part of the optical waveguide display lens is located in the shell, and the other part of the optical waveguide display lens extends out of the shell, and the light emitted by the display module is transmitted through the lens group to the optical waveguide display lens, and is totally reflected in the optical waveguide display lens to realize display; the connecting structure is located on the outer wall of the shell, and is used to connect the shell between the temples and the frame of the AR glasses.

[0007] Optionally, the housing comprises: a waveguide fixing frame, a lens barrel main housing and a display module bracket;

[0008] The waveguide fixing frame has a mounting groove, and the optical waveguide display lens is embedded in the mounting groove; the main housing of the lens barrel has a step inside, and the step is used to fix the lens group; the display module bracket is used to fix the display module;

[0009] The waveguide fixing frame, the lens barrel main housing and the display module bracket are connected in sequence.

[0010] Optionally, the display module bracket is a table-like structure, and a smaller end of the table-like structure is used to extend into the temple of the AR glasses;

[0011] The connection structure includes a first connection structure located on the outer wall of the frustum-shaped structure. The first connection structure is used for detachably connecting with the temple of the AR glasses when the frustum-shaped structure extends into the temple of the AR glasses.

[0012] Optionally, the connection structure further includes a second connection structure located on the waveguide holder. The second connection structure is used for detachably connecting with the frame of the AR glasses.

[0013] Optionally, the waveguide holder, the main housing of the lens barrel, and the display module bracket are connected by an adhesive.

[0014] Optionally, the lens group and the waveguide display lens are respectively connected with the housing by an adhesive.

[0015] Optionally, the display module bracket has a mounting groove, and the display module is clamped in the mounting groove;

[0016] The housing further includes a display module cover plate, and the display module cover plate is snap-connected with the display module bracket.

[0017] Optionally, in the propagation direction of the light emitted by the display module in the housing, the length range of the optical module is 25 - 30 mm;

[0018] In the direction perpendicular to the propagation direction of the light emitted by the display module in the housing, the width range of the optical module is 10 - 15 mm.

[0019] Optionally, the lens group includes a first convex mirror, a concave mirror, and a second convex mirror, and the concave mirror is located between the first convex mirror and the second convex mirror.

[0020] Optionally, the optical module further includes: a filter, the filter and the waveguide display lens are stacked, and the filter is embedded in the installation groove.

[0021] On the other hand, an AR glasses is provided, and the AR glasses includes the optical module as described in any one of the foregoing.

[0022] Optionally, the AR glasses has two optical modules, and the two optical modules are respectively arranged between the frame of the AR glasses and the two temples; or,

[0023] The AR glasses has one optical module, and the one optical module is arranged between the frame of the AR glasses and one temple.

[0024] The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure are:

[0025] In an embodiment of the present disclosure, a lens group is disposed inside a housing to propagate the light emitted by the display module into the waveguide display lens, so that total internal reflection occurs inside the waveguide display lens to achieve display. A connection structure is disposed on the outer wall of the housing to connect the housing between the temple and the frame of the AR glasses. In this way, the housing can replace a part of the original temple, thereby reducing the volume and weight of the AR glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 is a schematic structural diagram of an optical module provided by some embodiments of the present disclosure;

[0028] Figure 2 is Figure 1 a schematic cross-sectional view of an optical module provided;

[0029] Figure 3 is an exploded schematic diagram of an optical module provided by some embodiments of the present disclosure;

[0030] Figure 4 is a schematic cross-sectional view of a main housing of a lens barrel provided in some embodiments of the present disclosure;

[0031] Figure 5 is a schematic cross-sectional view of a display module bracket provided in some embodiments of the present disclosure;

[0032] Figure 6 is a schematic dimension diagram of an optical module provided by some embodiments of the present disclosure;

[0033] Figure 7 is a schematic dimension diagram of an optical module provided by some embodiments of the present disclosure;

[0034] Figure 8 is a schematic structural diagram of an AR glasses provided by some embodiments of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following further describes the embodiments of the present disclosure in detail with reference to the drawings.

[0036] Figure 1 is a schematic structural diagram of an optical module provided by some embodiments of the present disclosure. Refer to Figure 1, the optical module includes: a housing 10, a display module 30, a waveguide display lens 40, and a connection structure 50. Figure 2 is Figure 1 A schematic cross-sectional view of an optical module provided. Refer to Figure 2 , the optical module further includes a lens group 20.

[0037] Refer to Figure 1 and Figure 2 , the lens group 20 is located inside the housing 10; the display module 30 is located outside the housing 10, and the display surface of the display module 30 faces the lens group 20; a part of the waveguide display lens 40 is located inside the housing 10, and another part of the waveguide display lens 40 extends outside the housing 10. The light emitted by the display module 30 passes through the lens group 20 and propagates to the waveguide display lens 40, and total internal reflection occurs in the waveguide display lens 40 to achieve display; the connection structure 50 is located on the outer wall of the housing 10 and is used to connect the housing 10 between the temple and the frame of the AR glasses.

[0038] Wherein, the display surface of the display module is also the surface from which the display module emits light.

[0039] In the embodiments of the present disclosure, a lens group is arranged inside the housing to propagate the light emitted by the display module into the waveguide display lens, so that total internal reflection occurs in the waveguide display lens to achieve display. A connection structure is arranged on the outer wall of the housing to connect the housing between the temple and the frame of the AR glasses. In this way, the housing can replace a part of the original temple, thereby reducing the volume and weight of the AR glasses.

[0040] Exemplarily, the display module 30 is a liquid crystal display (LCD) display module, or the display module 30 is an organic light emitting diode (OLED) display module, or the display module 30 is a quantum dot light emitting diode (QLED) display module, or the display module 30 is a mini light emitting diode (Mini-LED) display module, or the display module 30 is a micro light emitting diode (Micro-LED) display module, or the display module 30 is other types of display modules, and the present disclosure does not limit this.

[0041] Exemplarily, the waveguide display lens 40 is made of transparent glass material, can directly receive external ambient light, and at the same time has a display function. The display image uses the display module as the display source. The image is conducted into the waveguide display lens through the lens group and is displayed on the entire waveguide display lens through diffraction conduction.

[0042] Figure 3 is an exploded schematic view of an optical module provided by some embodiments of the present disclosure. Refer to Figure 2 and Figure 3 , the housing 10, which is also the optical engine barrel of the optical module, includes: a waveguide fixing bracket 11, a main barrel housing 12, and a display module bracket 13;

[0043] The waveguide fixing bracket 11 has a mounting groove 110, and the optical waveguide display lens 40 is embedded in the mounting groove 110; there is a step inside the main barrel housing 12 for fixing the lens group 20; the display module bracket 13 is used for fixing the display module 30. The waveguide fixing bracket 11, the main barrel housing 12, and the display module bracket 13 are connected in sequence.

[0044] In this implementation, by dividing the housing into 3 parts, it is convenient to assemble the housing with the lens group, the optical waveguide display lens, and the display module. The overall size of this housing is thin, light, and small, and it hardly affects the user's wearing experience after being assembled into the AR glasses whole machine.

[0045] In a possible implementation of the present disclosure, the waveguide fixing bracket 11, the main barrel housing 12, and the display module bracket 13 are connected by an adhesive.

[0046] Exemplarily, this adhesive can be ultraviolet (UV) glue.

[0047] In other possible implementations of the present disclosure, the waveguide fixing bracket 11, the main barrel housing 12, and the display module bracket 13 are connected in other ways, such as by threads, etc.

[0048] As Figure 3 shown, the waveguide fixing bracket 11 is a cylindrical structure with one end open, and the mounting groove 110 is opened on the side wall of the cylindrical structure. The open end of the waveguide fixing bracket 11 is used to connect with the main barrel housing 12.

[0049] Exemplarily, the cross-section of the cylindrical structure is a rounded rectangle, which is convenient for design and processing. In other implementations, the cross-section of the cylindrical structure can also be other shapes, such as a circle, etc.

[0050] Exemplarily, the mounting groove 110 penetrates through the side wall of the waveguide fixing bracket 11, and the penetrated area can be half of the side wall. In other implementations, the area where the mounting groove 110 is opened can also be larger or smaller, such as reaching 3 / 4 of the side wall.

[0051] As Figure 3As shown, an installation portion 41 may be provided on the optical waveguide display lens 40, and the width of the installation portion 41 is smaller than the width of the optical waveguide display lens 40. The size of the installation portion 41 is equivalent to the size of the installation groove 110, so that the installation portion 41 can be inserted into the installation groove 110.

[0052] As Figure 3 shown, the main body of the optical waveguide display lens 40 is a rounded rectangle, and the installation portion 41 is a rectangular block protruding from one side of the rounded rectangle. Among them, the width of the installation portion 41 refers to the width in the direction c in the figure. The direction c is also the width direction of the rounded rectangle.

[0053] In a possible implementation of the present disclosure, after the optical waveguide display lens 40 is inserted into the installation groove 110, it is fixed with an adhesive.

[0054] Exemplarily, the adhesive may be a UV glue.

[0055] In other possible implementations of the present disclosure, after the optical waveguide display lens 40 is inserted into the installation groove 110, it can also be fixed in other ways, such as by inserting other structures into the installation groove 110 to clamp the optical waveguide display lens 40 in the installation groove 110, etc.

[0056] Referring again to Figure 2 and Figure 3 , the optical module may further include a filter 60, the filter 60 and the optical waveguide display lens 40 are stacked, and the filter 60 is embedded in the installation groove 110.

[0057] Among them, the filter 60 can filter out stray light whose wavelength is not within the wavelength range of the light normally emitted by the display module, so as to ensure that the light transmitted to the optical waveguide display lens 40 is provided by the display module as much as possible.

[0058] In addition, the filter 60 and the optical waveguide display lens 40 are inserted into the installation groove together, and at the same time, it also plays a role in fixing the optical waveguide display lens 40.

[0059] Furthermore, in order to ensure firmness, after the filter 60 and the optical waveguide display lens 40 are inserted into the installation groove, the aforementioned adhesive can also be used to strengthen the fixation.

[0060] Exemplarily, a ring of steps is provided at the open end of the waveguide fixing bracket 11 for mating with the open end of one end of the lens barrel main housing 12.

[0061] Figure 4 is a schematic cross-sectional view of the lens barrel main housing provided in some embodiments of the present disclosure. Refer to Figures 2 to 4 , the lens barrel main housing 12 is composed of a plurality of cylindrical structures with different sizes, and both ends of the lens barrel main housing 12 are open.

[0062] Exemplarily, the cross-section of each of the multi-segment cylindrical structures is a rounded rectangle, which is convenient for design and processing. In other implementation manners, the cross-section of the multi-segment cylindrical structure can also be other shapes, such as circular etc.

[0063] Exemplarily, the main lens barrel housing 12 is composed of 3 cylindrical structures with different sizes. At the connection of two adjacent cylindrical structures with different sizes, a step is formed. As Figure 4 shown, an annular first step 121 and an annular second step 122 are formed on the inner wall of the main lens barrel housing 12. The perimeter of the annular shape corresponding to the first step 121 is greater than the perimeter of the annular shape corresponding to the second step 122.

[0064] Among them, the first step 121 and the second step 122 are respectively used to mount one lens in the lens group 20.

[0065] As Figure 4 shown, the inner wall of the main lens barrel housing 12 may also have a ring of protrusions 123. The second step 122 is located between the first step 121 and the protrusions 123. This ring of protrusions 123 is also used to mount the lens in the lens group 20.

[0066] Exemplarily, the lens group 20 includes a first convex lens 21, a concave lens 22 and a second convex lens 23. The first convex lens 21 is mounted at the first step 121, the concave lens 22 is mounted at the second step 122, and the second convex lens 23 is mounted at the protrusions 123, so that the concave lens 22 is located between the first convex lens 21 and the second convex lens 23.

[0067] Exemplarily, the first convex lens 21, the concave lens 22 and the second convex lens 23 are all aspherical lenses.

[0068] As Figure 3 shown, the edges of the first convex lens 21 and the second convex lens 23 both have a ring of annular mounting surfaces, which are used to fit with the step surface of the first step 121 or the surface of the protrusions 123 to be mounted, so as to realize the mounting of the first convex lens 21 and the second convex lens 23.

[0069] One side of the concave lens 22 has a mounting step surface for fitting with the step surface of the second step 122, and the other side of the concave lens 22 abuts against the protrusions 123.

[0070] In a possible implementation manner of the present disclosure, after the lenses in the lens group 20 are fitted with the main lens barrel housing 12, they are connected with an adhesive.

[0071] Exemplarily, the adhesive can be a UV glue.

[0072] In other possible implementations of the present disclosure, after the lenses in the lens group 20 are fitted with the main housing 12 of the lens barrel, they are connected in other ways, such as being limited by a bolt structure, etc.

[0073] As Figure 4 shown, the connection structure 50 further includes a second connection structure 52 located on the waveguide fixing bracket 11, and the second connection structure 52 is used for detachably connecting with the frame of the AR glasses.

[0074] Exemplarily, the second connection structure 52 is a bump, and a screw hole or a through hole is provided on the bump. After passing a bolt through the screw hole or the through hole, it is matched with the screw hole on the frame, so as to achieve a detachable connection.

[0075] Of course, Figure 4 only one implementation manner of the second connection structure 52 is shown. In other possible implementation manners, the second connection structure 52 may also be a snap structure and is connected with the snap on the frame.

[0076] Figure 5 is a schematic cross-sectional view of the display module bracket provided in some embodiments of the present disclosure. Refer to Figure 2 、 Figure 3 and Figure 5 , the main body of the display module bracket 13 is a frustum-shaped structure, and both ends of the frustum-shaped structure are open.

[0077] Exemplarily, the main body of the display module bracket 13 is a frustum structure, which is convenient for design and processing. In other implementation manners, the main body of the display module bracket 13 may also be other shapes, such as a frustum of a cone structure, etc.

[0078] Since the display module bracket 13 is a frustum-shaped structure, the smaller end of the frustum-shaped structure can extend into the temple of the AR glasses. The outer wall of the display module bracket 13 has a first connection structure 51, and the first connection structure 51 is used for detachably connecting with the temple of the AR glasses when the frustum-shaped structure extends into the temple of the AR glasses.

[0079] Exemplarily, the first connection structure 51 is a screw hole provided on a step. When the display module bracket 13 extends into the temple of the AR glasses, it is fixed by passing a bolt through the through hole of the temple and the screw hole on the step in sequence.

[0080] Of course, Figure 5 only one implementation manner of the first connection structure 51 is shown. In other possible implementation manners, the first connection structure 51 may also be a snap structure and is connected with the snap on the temple. When the main body of the display module bracket 13 is a frustum of a cone, the first connection structure 51 may also be a threaded structure, and the threaded structure is provided on the outer side wall of the top or the bottom of the display module bracket 13.

[0081] As Figure 5 shown, an installation groove 131 is provided at the top of the table-like structure, and the installation groove 131 is used for installing the display module 30. A step 132 is provided at the bottom of the table-like structure, and the step 132 is used for connecting with the main barrel housing 12.

[0082] Among them, the middle part of the installation groove 131 is hollowed out and communicated with the middle cavity of the display module bracket 13. The display module 30 is arranged in the installation groove 131, and the light-emitting surface of the display module 30 faces the hollowed-out middle part of the installation groove 131.

[0083] Refer to again Figure 2 and Figure 3 , the housing 10 may further include a display module cover plate 14, and the display module cover plate 14 is snap-connected with the display module bracket 13, so as to fix the display module 30 in the installation groove 131.

[0084] As Figure 3 shown, the display module cover plate 14 is an L-shaped cover plate, and the display module bracket 13 is provided with a snap structure for cooperating with the L-shaped cover plate around the installation groove 131. After the display module 30 is placed in the installation groove 131, the L-shaped cover plate is snapped into the snap structure to realize the locking of the display module 30.

[0085] Refer to again Figure 2 and Figure 3 , one side of the display module 30 is connected with a flexible printed circuit board (FPC) 70. The FPC 70 extends out from between the display module bracket 13 and the display module cover plate 14 and is used for connecting to a signal source host, such as a mobile phone.

[0086] In order to facilitate the connection between the display module and the signal source host, a patch cord can be connected to the FPC 70. The display module 30 originally uses the terminals of the FPC 70 as the input end. After being converted by the patch cord, the display module 30 can adopt a common mobile device interface such as Type-C as the input end.

[0087] The following briefly describes the assembly process of the optical module provided by the present disclosure:

[0088] The optical module uses the main barrel housing 12 as the assembly reference. There are steps inside the main barrel housing 12 (the first step 121 and the second step 122). First, the concave mirror 22 is installed on the second step 122 inside the main barrel housing 12 and fixed by bonding with transparent UV glue. Then, the first convex mirror 21 and the second convex mirror 23 are successively inserted into the main barrel housing 12 and installed on the first step 121 and the protrusion 123 respectively, and fixed by bonding with transparent UV glue. Then, the waveguide display lens 40 and the filter 60 are inserted into the installation groove 110 of the waveguide fixing bracket 11 and fixed by bonding with transparent UV glue. The waveguide fixing bracket 11 and the main barrel housing 12 are fixed with UV glue. The display module 30 is installed in the installation groove 131 of the display module bracket 13, and then the display module cover plate 14 is snap-fitted onto the display module bracket 13. The display module bracket 13 and the main barrel housing 12 are fixed with UV glue.

[0089] The optical module provided by the present disclosure uses a diffractive optical waveguide lens group, which has a smaller size and better display effect. Through a housing composed of three parts, three lenses, a filter, a waveguide display lens, and a display module are assembled in place. The picture is displayed through the waveguide display lens, and the entire module is fixed by the outer shell. The optical module provided by the present disclosure can ensure good display effect, high-precision positioning, and convenient assembly process of the AR glasses. At the same time, it has the advantages of compact structure, small size, and light weight, which is beneficial to the realization of the lightness of the AR glasses.

[0090] Figure 6 and Figure 7 are the size schematic diagrams of the optical module provided by some embodiments of the present disclosure. Figure 6 and Figure 7 are respectively obtained by observing from two mutually perpendicular perspectives.

[0091] See Figure 6 , in the propagation direction a of the light emitted by the display module 30 inside the housing 10, the length L1 of the optical module ranges from 25 to 30 mm.

[0092] Exemplarily, the length L1 of the optical module is 29.76 mm.

[0093] See Figure 7 , in the direction perpendicular to the propagation direction of the light emitted by the display module 30 inside the housing 10 (i.e., direction b in the figure), the width D1 of the optical module ranges from 10 to 15 mm.

[0094] Exemplarily, the width D1 of the optical module is 14.68 mm.

[0095] See again Figure 7, in the direction a, the length L2 of the waveguide display lens 40 ranges from 60 to 65 mm.

[0096] Exemplarily, the length L2 of the waveguide display lens 40 is 61.288 mm.

[0097] Refer again to Figure 6 and Figure 7 , in the direction c, the width D2 of the waveguide display lens 40 ranges from 40 to 45 mm. Here, the direction c is a direction perpendicular to both the direction a and the direction b.

[0098] Exemplarily, the width D2 of the waveguide display lens 40 is 42.22 mm.

[0099] From the above size parameters, it can be seen that the overall volume of the AR glasses finished product using the optical module provided by the present disclosure is similar to that of ordinary optical glasses, having the advantages of small volume and light weight.

[0100] Figure 8 is a schematic structural diagram of an AR glasses provided by some embodiments of the present disclosure. Refer to Figure 8 , the AR glasses include Figures 1 to 7 the optical module 100 shown in any one of the figures.

[0101] In the embodiments of the present disclosure, a lens group is arranged in the housing of the optical module to propagate the light emitted by the display module into the waveguide display lens, so as to realize display by total internal reflection in the waveguide display lens. A connection structure is arranged on the outer wall of the housing, so as to connect the housing between the temple and the frame of the AR glasses. In this way, the housing can replace a part of the original temple, thereby reducing the volume and weight of the AR glasses.

[0102] As Figure 8 shown, the housing of the optical module 100 is connected between the frame 200 and the temple 300, and at the same time, the waveguide display lens 40 of the optical module 100 is embedded in the frame 200.

[0103] As Figure 8 shown, there is a hole on the temple 300, and a bolt 301 is arranged in the hole. After passing through the hole on the temple 300, the bolt 301 passes through the first connection structure 51 (threaded hole), so as to realize the connection between the temple 300 and the optical module 100.

[0104] Similarly, there is a threaded hole on the frame 200 ( Figure 8 not shown). After passing the bolt through the threaded hole or through hole arranged on the second connection structure 52 and matching it with the threaded hole on the frame 200, a detachable connection is realized.

[0105] As described above, the end of the FPC 70 of the optical module can be connected to an adapter cable to make its input end become an interface such as a Type-C interface. After the optical module is assembled onto the AR glasses, an installation hole can be opened on the temple 300 of the AR glasses for installing the aforementioned Type-C interface, thereby realizing the connection between the AR glasses and the signal source host.

[0106] As Figure 8 shown, in addition to the aforementioned optical module 100, frame 200, and temple 300, the AR glasses further include another lens 400 and another temple 500.

[0107] Among them, no optical module is provided on the other temple 500. Correspondingly, the other lens 400 is not a waveguide display lens 40, but an ordinary lens, such as a glass lens or a resin lens, etc.

[0108] That is to say, in the Figure 8 shown AR glasses, the AR glasses only have one optical module 100, and the one optical module 100 is arranged between the frame 200 and one temple 300 of the AR glasses.

[0109] In the Figure 8 shown AR glasses, one side lens allows the user to experience AR, and the other side lens is an ordinary lens.

[0110] In other embodiments, the AR glasses have two optical modules 100, and the two optical modules 100 are respectively arranged between the frame 200 and the two temples 300 of the AR glasses.

[0111] In such AR glasses, both side lenses of the AR glasses allow the user to experience AR.

[0112] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. An optical module, characterized in that, The optical module includes: a housing (10), a lens group (20), a display module (30), a waveguide display lens (40), and a connection structure (50); The lens group (20) is located inside the housing (10), the display module (30) is located outside the housing (10), the display surface of the display module (30) faces the lens group (20), a part of the waveguide display lens (40) is located inside the housing (10), another part of the waveguide display lens (40) extends outside the housing (10), and the light emitted by the display module (30) propagates through the lens group (20) to the waveguide display lens (40); The connection structure (50) is located on the outer wall of the housing (10) and is used to connect the housing (10) between the temple and the frame of the AR glasses, and the housing (10) serves as a part of the temple; In the propagation direction of the light emitted by the display module (30) inside the housing (10), the length range of the optical module is 25 - 30 mm; In the direction perpendicular to the propagation direction of the light emitted by the display module (30) inside the housing (10), the width range of the optical module is 10 - 15 mm; The housing (10) includes: a waveguide fixing bracket (11), a barrel main housing (12), and a display module bracket (13); The waveguide fixing bracket (11) has a mounting groove (110), and the waveguide display lens (40) is embedded in the mounting groove (110); there is a step inside the barrel main housing (12) for fixing the lens group (20); the display module bracket (13) is used to fix the display module (30); The waveguide fixing bracket (11), the barrel main housing (12), and the display module bracket (13) are connected in sequence; The optical module further includes: a filter (60), the filter (60) is stacked with the waveguide display lens (40), and the filter (60) is embedded in the mounting groove (110); The filter (60) is used to fix the waveguide display lens (40); the filter (60) and the waveguide display lens (40) are fixedly strengthened by an adhesive; The filter (60) is used to filter out stray light whose wavelength is not within the wavelength range of the light normally emitted by the display module (30).

2. The optical module according to claim 1, wherein The display module bracket (13) is in a frustum shape, and the smaller end of the frustum shape is used to extend into the temple of the AR glasses; The connection structure (50) includes a first connection structure (51) located on the outer wall of the frustum shape, and the first connection structure (51) is used to be detachably connected to the temple of the AR glasses when the frustum shape extends into the temple of the AR glasses.

3. The optical module according to claim 2, characterized in that, The connection structure (50) further includes a second connection structure (52) located on the waveguide fixing bracket (11), and the second connection structure (52) is used to be detachably connected to the frame of the AR glasses.

4. The optical module according to any one of claims 1 to 3, wherein the waveguide fixing bracket (11), the main barrel housing (12), and the display module bracket (13) are connected by an adhesive.

5. The optical module according to any one of claims 1 to 3, characterized in that, The lens group (20) and the light waveguide display lens (40) are respectively connected to the housing (10) by an adhesive.

6. The optical module according to any one of claims 1 to 3, characterized in that The display module bracket (13) has a mounting groove (131), and the display module (30) is snap-fitted in the mounting groove (131); The housing (10) further includes a display module cover plate (14), and the display module cover plate (14) is snap-connected to the display module bracket (13).

7. The optical module according to any one of claims 1 to 3, characterized in that, The lens group (20) includes a first convex mirror (21), a concave mirror (22), and a second convex mirror (23), and the concave mirror (22) is located between the first convex mirror (21) and the second convex mirror (23).

8. An AR glasses, characterized in that, The AR glasses include the optical module according to any one of claims 1 to 7.

9. The AR glasses according to claim 8, characterized in that, The AR glasses have two optical modules, and the two optical modules are respectively arranged between the frame and the two temple arms of the AR glasses.

10. The AR glasses according to claim 8, characterized in that, The AR glasses have one optical module, and the one optical module is arranged between the frame and one temple arm of the AR glasses.

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