Optical machine mounting structure and intelligent glasses

Abstract

The utility model discloses an optical machine installation structure and intelligent glasses. The optical machine installation structure comprises an optical machine assembly, a sleeve assembly and a boss assembly. Wherein the ray machine assembly is provided with a ray machine mounting surface; the sleeve assembly is sleeved on the ray machine assembly, the sleeve assembly is provided with a first mounting surface and a second mounting surface, the first mounting surface and the second mounting surface are arranged in an inclined manner, and the first mounting surface is connected with the ray machine mounting surface; the side, facing the sleeve assembly, of the boss assembly is provided with a boss installation face, and the boss installation face is connected with the second installation face. Through the scheme of the invention, the fixation stability of the optical machine can be improved, and meanwhile, the damage to the optical machine can be reduced when the optical machine is disassembled.

Description

Technical Field

[0001] This application generally relates to the field of optical waveguide technology. More specifically, this application relates to an optomechanical mounting structure and smart glasses. Background Technology

[0002] Depending on the optical design, current Augmented Reality Glasses (AR) can be categorized into freeform AR glasses, waveguide AR glasses, and birdbath AR glasses. Among these different AR glasses designs, waveguide AR glasses are currently the research trend because their appearance is closest to ordinary glasses. The core components of AR glasses are the optical engine and the display screen. For waveguide AR glasses, the display screen is a waveguide display. An optical waveguide is a precision optical structure that guides light waves through a specific medium using the principle of total internal reflection. Its core function is to efficiently transmit the image generated by the miniature display screen to the human eye while maintaining high light transmittance to the external environment. Specifically, an optical waveguide can be composed of a high-refractive-index material (such as glass or silicon carbide) and a low-refractive-index cladding. When light is incident on the interface at an angle greater than the critical angle, total internal reflection occurs, thus confining its propagation within the waveguide.

[0003] In AR glasses, the optical engine is the core optical component responsible for generating and projecting virtual images. It can convert the image signals generated by the microdisplay into optical images that can be perceived by the human eye and transmit them to the human eye through optical waveguides or other optical elements.

[0004] During the installation of the optical engine, active alignment (AA) can be used to determine its angle and position within the AR glasses, which is then secured to the AR glasses using adhesive. However, in existing solutions, the small contact area between the optical engine and the AR glasses frame can lead to weak adhesive bonding, preventing the optical engine from being accurately positioned after AA alignment. Furthermore, excess adhesive may remain at the light output port, affecting light emission. Moreover, when the optical engine requires repair, directly disassembling it from its bonded state to the AR glasses may damage and shut it down.

[0005] In view of this, there is an urgent need to provide a solution for an optical engine mounting structure and smart glasses, so as to improve the stability of the optical engine fixation while reducing damage to the optical engine when it is disassembled. Utility Model Content

[0006] In order to at least solve one or more of the technical problems mentioned above, this application proposes an optomechanical mounting structure and a solution for smart glasses in several aspects.

[0007] In a first aspect, this application provides an optomechanical mounting structure, the optomechanical mounting structure including an optomechanical component, a sleeve component, and a boss component; wherein, the optomechanical component has an optomechanical mounting surface; the sleeve component is sleeved on the optomechanical component, the sleeve component has a first mounting surface and a second mounting surface inclined to the first mounting surface, wherein the first mounting surface is connected to the optomechanical mounting surface; the boss component has a boss mounting surface on the side facing the sleeve component, the boss mounting surface being connected to the second mounting surface.

[0008] In some embodiments, the boss mounting surface is arranged parallel to the second mounting surface.

[0009] In some embodiments, the boss assembly is provided with a through hole whose axis is perpendicular to the boss mounting surface.

[0010] In some embodiments, the optomechanical assembly includes a lens barrel portion, the diameter of which is less than or equal to the diameter of the through-hole.

[0011] In some embodiments, the optomechanical component extends at least partially into the through-hole.

[0012] In some embodiments, the cross-sectional shape of the through-hole is the same as the cross-sectional shape of the optomechanical component.

[0013] In some embodiments, the sleeve assembly is made of a light-transmitting material.

[0014] In some embodiments, the optomechanical assembly includes a limiting portion, the cross-sectional dimension of which is larger than the inner diameter of the sleeve assembly, to limit the sleeve assembly in the axial direction; wherein, the limiting portion has a groove on the side facing the sleeve assembly, and the sleeve assembly has a protrusion on the side facing the limiting portion; when the sleeve assembly is mounted on the optomechanical assembly, the protrusion can extend into the groove to position the sleeve assembly.

[0015] In a second aspect, this application provides a smart glasses, comprising: an optomechanical mounting structure as described in any one of the first aspects; and a frame on which a boss assembly of the optomechanical mounting structure is disposed.

[0016] The above-described optomechanical mounting structure and smart glasses utilize this embodiment. The first mounting surface of the sleeve assembly is connected to the optomechanical mounting surface, and the second mounting surface of the sleeve assembly is connected to the boss mounting surface. This allows for a larger contact area between the optomechanical assembly and the boss assembly, thereby improving the stability of the optomechanical assembly mounting. Furthermore, since the optomechanical assembly and the sleeve assembly are connected together, and the sleeve assembly and the boss assembly are connected together, when it is necessary to disassemble the optomechanical assembly, the optomechanical assembly and the boss assembly can be separated by disassembling the optomechanical assembly and the sleeve assembly, thus avoiding damage to the optomechanical assembly caused by direct disassembly. Attached Figure Description

[0017] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, and the same or corresponding reference numerals denote the same or corresponding parts, wherein:

[0018] Figure 1 An exemplary cross-sectional view of the optomechanical mounting structure of some embodiments of this application is shown;

[0019] Figure 2 An exemplary cross-sectional view of the optomechanical mounting structure of some other embodiments of this application is shown;

[0020] Figure 3 An exemplary cross-sectional view of the optomechanical mounting structure of some other embodiments of this application is shown;

[0021] Figure 4 An exemplary block diagram of a mounting method 400 for an optomechanical mounting structure according to some embodiments of this application is shown;

[0022] Figure 5 An exemplary block diagram of a method 500 for pre-installing an optomechanical assembly with a sleeve assembly onto a boss assembly based on the preset installation angle, according to some embodiments of this application, is shown.

[0023] Figure 6 An exemplary block diagram is shown of a method 600 for adjusting the optical engine component to achieve the installation of the optical engine component, according to some embodiments of this application.

[0024] Tag Name

[0025] 10 - Optomechanical assembly, 101 - Shielding cover, 102 - Flexible printed circuit board, 103 - Connector, 104 - Backplate, 105 - Display, 106 - Lens barrel, 11 - Optomechanical mounting surface, 12 - Limiting part, 121 - Groove, 122 - Limiting surface;

[0026] 20 – Sleeve assembly; 21 – First mounting surface; 22 – Second mounting surface; 23 – Protrusion; 24 – Third mounting surface;

[0027] 30 - Boss assembly; 301 - Boss base; 302 - Protrusion; 31 - Boss mounting surface; 32 - Through hole; 321 - First stepped hole; 322 - Second stepped hole. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] It should be understood that the terms "comprising" and "including" used in the specification and claims of this application indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0031] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0032] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0033] Figure 1 An exemplary cross-sectional view of the optomechanical mounting structure of some embodiments of this application is shown. For example... Figure 1As shown, the optomechanical mounting structure includes an optomechanical assembly 10, a sleeve assembly 20, and a boss assembly 30; wherein, the optomechanical assembly 10 has an optomechanical mounting surface 11; the sleeve assembly 20 is sleeved on the optomechanical assembly 10, and the sleeve assembly 20 has a first mounting surface 21 and a second mounting surface 22 inclined to the first mounting surface, wherein the first mounting surface 21 is connected to the optomechanical mounting surface 11; the boss assembly 30 has a boss mounting surface 31 on the side facing the sleeve assembly 20, and the boss mounting surface 31 is connected to the second mounting surface 22.

[0034] In some embodiments, AR glasses may include an optical engine assembly 10. Specifically, the optical engine assembly can generate virtual images and project the virtual images onto a display screen. The optical engine assembly may include a shielding cover 101, a flexible printed circuit board (FPC) 102, a connector 103, a backplate 104, a display 105, and a lens barrel 106, etc. The lens barrel 106 may include a lens barrel housing and optical elements located inside the lens barrel housing.

[0035] In some embodiments, the shielding cover 101 can be used to shield external interference, isolating the internal circuitry of the optical engine from external electromagnetic interference sources (such as radio waves, electronic devices), preventing these interference signals from entering the optical engine assembly 10, and avoiding any impact on the normal operation of electronic components and circuits such as microdisplays and lens groups inside the optical engine. This ensures the stability and accuracy of the image signals generated and transmitted by the optical engine, thereby guaranteeing that the quality of the virtual image seen by the user is not interfered with. Furthermore, the microdisplays and drive circuits inside the optical engine also generate electromagnetic waves during operation. The shielding cover 101 can confine the internally generated electromagnetic waves within the optical engine, reducing interference to the surrounding environment and other electronic devices, while protecting the privacy of signals inside the optical engine. Further, the shielding cover 101 can have mechanical strength, providing physical protection for fragile electronic components such as microdisplays and lens groups inside the optical engine, preventing damage from impacts, pressure, or other external forces. In addition, it can prevent dust, moisture, and other contaminants from entering the optical engine, avoiding corrosion or short circuits and extending the lifespan of the optical engine.

[0036] In some embodiments, the flexible printed circuit board 102 can be disposed between the shield 101 and the connector 103, and can be connected to the shield 101 and the connector 103. Electronic components in the optomechanical assembly can be connected according to circuit design requirements to form a complete circuit path, ensuring stable current transmission between components and providing power support for the normal operation of the optomechanical system.

[0037] In some embodiments, connector 103 may include an FPC connector, which may be located on the side of flexible printed circuit board 102 away from shielding cover 101. This FPC connector can be used to connect flexible printed circuit board 102 to other components, such as microdisplays, driver chips, etc. It is characterized by its thinness, lightness, and flexibility, enabling it to adapt to the complex spatial layout within the optical engine and the relative movement between components.

[0038] In some embodiments, a backplate 104 may be disposed between a display 105 and a flexible printed circuit board 102. The backplate 104 may be used to provide a mounting platform for the display 105 and to isolate the sensitive components inside the lens barrel 106 from the external environment, thereby reducing the impact of external physical shocks and vibrations on them, playing a protective role, and reducing the risk of component damage caused by external factors.

[0039] In some embodiments, the display 105 can be mounted on the side of the back panel 104 away from the flexible printed circuit board 102. The display 105 can be used to receive image data signals from the optomechanical driving circuit, convert them into color and brightness information of the corresponding pixels, and by controlling the light emission or light transmission of each pixel, finally present a clear and realistic image on the screen, including various visual content such as text, graphics, and video, to provide users with the visual information they need.

[0040] In some embodiments, the lens barrel portion 106 may be disposed on the side of the display 105 opposite to the back panel 104. Further, the lens barrel portion 106 may enclose a lens barrel housing and optical elements located inside the lens barrel housing. It is understood that at least a portion of the lens barrel housing may have an optomechanical mounting surface 11 formed thereon. Further, the optical elements may include lens groups, prisms, apertures, filters, and / or polarizers, etc.

[0041] In some embodiments, AR glasses may further include an optical waveguide, which may be composed of multiple layers of optical materials, such as a substrate, a waveguide layer, and coupling elements. The optical waveguide can transmit the virtual image information generated by the aforementioned display 105 to the user's eyes in the form of light, enabling the user to see a clear virtual image. By precisely controlling the propagation path and direction of light within the optical waveguide, the virtual image is accurately presented in the user's field of vision, superimposed on the real-world scene, achieving an augmented reality effect.

[0042] In some embodiments, the aforementioned optomechanical assembly 10 may have an optomechanical mounting surface 11. Specifically, the lens barrel portion 106 of the optomechanical assembly may have a lens barrel housing, on which at least a portion is formed the optomechanical mounting surface 11, and the lens barrel housing may cover the optical elements of the lens barrel portion 106. In some embodiments, the cross-sectional shape of the optomechanical mounting surface may be polygonal or circular, and the cross-sectional shape of the optomechanical mounting surface in the axial direction may be polygonal, such as rectangular or trapezoidal, wherein the axial direction may be perpendicular to the cross-sectional shape of the optomechanical mounting surface.

[0043] In some embodiments, the aforementioned boss assembly 30 may have a through hole into which the aforementioned optical engine assembly 10 can extend. Furthermore, the lens barrel housing of the aforementioned optical engine assembly may have a first region and a second region, wherein the first region may be the side closer to the display 105, and the second region may be the side farther from the display 105. When the optical engine assembly 10 is mounted within the boss assembly 30, the projection of the boss assembly 30 toward the optical engine assembly 10 may be located within the second region.

[0044] In some embodiments, an optical-mechanical mounting surface may be formed in the first region, and a pre-fixed surface may be formed in the second region. The optical-mechanical mounting surface can be connected to the first mounting surface of the sleeve assembly by adhesive, and the pre-fixed surface can also be connected to the sidewall of the through hole of the boss assembly by adhesive. It should be understood that the amount of adhesive used between the pre-fixed surface and the sidewall of the through hole of the boss assembly 30 can be less than the amount of adhesive used between the optical-mechanical mounting surface and the first mounting surface. This increases the contact area of ​​the adhesive between the optical-mechanical assembly 10 and the boss assembly 30, while preventing damage to the lens barrel housing of the optical-mechanical assembly during disassembly. In some embodiments, the adhesive may include optically transparent adhesive, epoxy underfill adhesive, and UV adhesive, etc.

[0045] In some embodiments, the sleeve assembly 20 can be sleeved onto the optomechanical assembly 10. Specifically, the sleeve assembly 20 can be annular, and its material can be transparent acrylic. The sleeve assembly can have a first mounting surface 21 and a second mounting surface 22, wherein the first mounting surface 21 can include the inner surface of the sleeve assembly 20, and the second mounting surface 22 can include the surface of the sleeve assembly 20 facing the boss assembly 30. When the sleeve assembly 20 is sleeved onto the optomechanical assembly 10, the first mounting surface 21 can contact the optomechanical mounting surface 11.

[0046] In some embodiments, the sleeve assembly 20 and the optical-mechanical assembly 10 can be connected together by dispensing adhesive, in which case the first mounting surface 21 of the sleeve assembly can be bonded to the optical-mechanical mounting surface 11 of the lens barrel housing. Specifically, adhesive can be dispensed onto the lens barrel housing of the optical-mechanical assembly, and then the sleeve assembly 20 can be fitted onto the optical-mechanical assembly 10. It should be understood that the sleeve assembly can be irradiated with a curing light to solidify the adhesive between the sleeve assembly 20 and the optical-mechanical assembly 10, thereby fixing the sleeve assembly 20 and the optical-mechanical assembly 10 together, and then the fixed sleeve assembly 20 and the optical-mechanical assembly 10 can be mounted on the boss assembly.

[0047] In other embodiments, after the optical-mechanical assembly is mounted onto the boss assembly, the optical-mechanical assembly 10, the sleeve assembly 20, and / or the boss assembly 30 can be irradiated with a solidification beam to solidify the adhesive between them. Specifically, adhesive can be applied to the lens barrel housing of the optical-mechanical assembly, and the sleeve assembly 20 can be fitted onto the optical-mechanical assembly 10. Further, after the optical-mechanical assembly 10 is mounted onto the boss assembly, the optical-mechanical assembly, the boss assembly, and / or the sleeve assembly can be irradiated in a direction parallel to the axis of the optical-mechanical assembly, thereby fixing them together. Additionally, for the sleeve assembly 20, since it is translucent, it can also be irradiated radially to solidify the adhesive between the sleeve assembly 20 and the optical-mechanical lens barrel, while simultaneously irradiating the optical-mechanical lens barrel and the boss assembly to fix them together. Understandably, this reduces the use of condensed light, thereby improving efficiency.

[0048] In other embodiments, the sleeve assembly 20 and the optical-mechanical assembly 10 can be connected by a threaded connection. Specifically, a first threaded hole can be provided on the optical-mechanical mounting surface 11 of the lens barrel housing, and a second threaded hole opposite to the first threaded hole can be provided on the sleeve assembly 20. By connecting the threaded assembly to the second threaded hole and the first threaded hole, the sleeve assembly 20 can be fixed to the optical-mechanical assembly 10. The inner diameters of the first threaded hole and the second threaded hole can be equal, and their thread directions can be the same. The threaded assembly can include bolts, studs, or screws, etc.

[0049] In some other embodiments, the sleeve assembly 20 can be connected to the optical-mechanical assembly 10 via an interference fit. It is understood that the diameter of the lens barrel housing of the optical-mechanical assembly can be larger than the inner diameter of the sleeve assembly 20, and a tight connection can be achieved through the interference fit between the lens barrel housing and the sleeve assembly 20.

[0050] In some embodiments, the boss assembly 30 can be disposed on the frame of AR glasses. Specifically, the boss assembly 30 may include a boss base 301 and a protrusion 302. The boss base 301 can be detachably or fixedly connected to the frame. The side of the boss base 301 facing the optical waveguide can be a first boss side, and the side of the boss base 301 away from the optical waveguide can be a second boss side. The protrusion 302 can be formed on the second protrusion side in the direction away from the optical waveguide. Furthermore, a boss mounting surface 31 can be formed on the side of the protrusion 302 away from the optical waveguide direction.

[0051] In some embodiments, the boss assembly 30 and the sleeve assembly 20 can be connected by adhesive bonding or threaded connection. Specifically, the second mounting surface 22 of the sleeve assembly can be the surface facing the boss mounting surface 31 of the boss assembly. The second mounting surface 22 and the boss mounting surface 31 can be bonded together with adhesive, thereby connecting the sleeve assembly 20 and the boss assembly 30 together. Further, the boss assembly 30 can have a first protrusion formed in a direction perpendicular to the axis of the boss, and the sleeve assembly 20 can have a second protrusion formed in a direction perpendicular to the axis. The first and second protrusions can be provided with threaded holes, wherein the axis of the threaded holes can be parallel to the axis of the boss assembly. The threaded assembly can be used to mount the second mounting surface 22 and the boss mounting surface 31 together through the threaded holes on the first and second protrusions, thereby connecting the boss assembly 30 and the sleeve assembly 20 together. The aforementioned threaded assembly can include screws, bolts, studs, etc.

[0052] In some embodiments, the optical engine can be attached to the lens frame via adhesive dispensing. When it is necessary to remove the optical engine, a clamping device can be used to hold it for disassembly. It is understood that because the clamping device is in direct contact with the optical engine, it may cause damage during disassembly, resulting in loss.

[0053] In contrast, in this application, the optical engine assembly 10 and the sleeve assembly 20 are assembled together, and then the sleeve assembly 20 and the boss assembly 30 are assembled together, allowing the optical engine assembly 10 to be mounted together with the boss assembly 30. When it is necessary to disassemble the optical engine assembly 10, the sleeve assembly 20 can be clamped by a clamping device, thereby allowing the optical engine assembly 10 and the sleeve assembly 20 to be removed from the lens frame together. It is understood that in the aforementioned process, the clamping device only contacts the sleeve assembly 20, thus avoiding contact between the clamping device and the optical engine assembly, and consequently preventing damage to the optical engine assembly 10 during disassembly.

[0054] In this application, the first mounting surface 21 of the sleeve assembly is connected to the optical engine mounting surface 11, and the second mounting surface 22 of the sleeve assembly is connected to the boss mounting surface 31. Compared to directly gluing the optical engine to the frame, this design allows for a larger contact area when the optical engine assembly 10 is fixed with adhesive, thereby improving the stability of the bond. Furthermore, since the optical engine assembly 10 is bonded to the sleeve assembly 20, and the sleeve assembly 20 is bonded to the boss assembly 30, when it is necessary to disassemble the optical engine assembly 10, it can be disassembled between the second mounting surface 22 of the sleeve assembly and the boss mounting surface 31. This allows the sleeve assembly 20 and the boss assembly 30 to be separated, thus enabling the disassembly of the optical engine assembly and avoiding damage to the optical engine caused by the adhesive during disassembly of the optical engine assembly and the sleeve assembly.

[0055] In some embodiments, the boss mounting surface 31 is arranged parallel to the second mounting surface 22.

[0056] In some embodiments, the aforementioned boss mounting surface 31 can be a plane, and the second mounting surface 22 can also be a plane.

[0057] In other embodiments, the aforementioned boss mounting surface 31 can be a curved surface, such as a conical surface. In this case, the second mounting surface 22 can be the same curved surface as the boss mounting surface 31, and the distance between the second mounting surface 22 and the boss mounting surface 31 can remain unchanged. It is understood that when the boss mounting surface 31 and the second mounting surface 22 are curved surfaces, the contact area between them is larger, and when the curved surface is oriented towards the optical waveguide direction of the AR glasses, it is convenient to apply adhesive between them.

[0058] In some embodiments, the aforementioned boss mounting surface 31 can be connected to the second mounting surface 22 by adhesive. It is understood that compared to when the boss mounting surface 31 and the second mounting surface 22 are inclined, when the boss mounting surface 31 and the second mounting surface 22 are parallel, they can have a larger contact area, thereby improving the stability of the bonding between the boss mounting surface 31 and the second mounting surface 22, and further improving the stability of the bonding between the optomechanical assembly 10 and the boss assembly 30.

[0059] In some embodiments, the boss assembly 30 has a through hole 32 whose axis is perpendicular to the boss mounting surface 31. In some embodiments, the optical engine assembly includes a lens barrel portion, the diameter of which is less than or equal to the diameter of the through hole.

[0060] In some embodiments, the optomechanical assembly may include a lens barrel and a main body, the main body of which may include a shield, a flexible printed circuit board, a connector, a backplane, and a display, etc.

[0061] In some embodiments, the lens barrel portion may include a lens barrel portion housing, the diameter of which may be larger than the diameter of the through hole. Specifically, the lens barrel portion housing may be a shell with a certain thickness, the outer diameter of which may be larger than the diameter of the through hole, and the inner diameter of which may be smaller than the diameter of the through hole. This allows light rays from optical components (e.g., optical elements) inside the lens barrel portion housing to propagate along the through hole 32 into the waveguide.

[0062] In some embodiments, the diameter of the lens barrel portion may be less than or equal to the diameter of the through hole, allowing the optical component to extend into the through hole 32.

[0063] In some embodiments, the inner diameter of the aforementioned through-hole 32 can be set to be constant, and the inner diameter of the through-hole 32 can be larger than the diameter of the lens barrel housing of the optical engine assembly. When the optical engine assembly 10 and the boss assembly 30 are pre-installed together, the optical engine assembly 10 can extend into the through-hole 32, and the optical engine assembly 10 can move axially and / or radially within the through-hole 32. When performing AA (auto-alignment) imaging on the optical engine assembly, the pose of the optical engine assembly can be adjusted, wherein the optical engine assembly 10 can be moved and / or rotated within the through-hole 32. After performing AA imaging on the optical engine assembly 10, the optical engine assembly can be adjusted based on the result of the AA imaging.

[0064] In some embodiments, the optomechanical component 10 extends at least partially into the through-hole 32.

[0065] In some embodiments, when the size of the lens barrel portion of the optical engine assembly is less than or equal to the through hole 32 of the boss assembly, the lens barrel portion of the optical engine assembly can extend into the through hole 32. It is understood that adhesive can be applied to the housing of the optical engine assembly, and when the optical engine assembly is inserted into the through hole 32, the housing of the optical engine assembly can be bonded to the inner wall of the through hole 32, thus achieving pre-fixation of the optical engine assembly.

[0066] By inserting the optical engine component into the through hole and bonding the outer side of the optical engine component housing and the inner wall of the through hole, the bonding area between the optical engine component and the boss component can be increased, thereby increasing the bonding stability between the optical engine component and the boss component.

[0067] Figure 2 An exemplary cross-sectional view of the optomechanical mounting structure of other embodiments of this application is shown. For example... Figure 2As shown, the optical engine mounting structure may include an optical engine assembly 10, a sleeve assembly 20, and a boss assembly 30. The boss assembly may include a through hole 32, which may be configured as a stepped through hole. Specifically, the through hole 32 may include a first stepped hole 321 and a second stepped hole 322, wherein the first stepped hole 321 may be located on the side away from the sleeve assembly 20, and the second stepped hole 322 may be located on the side closer to the sleeve assembly 20. Further, the diameter of the first stepped hole 321 may be larger than the diameter of the second stepped hole 322. It is understood that the diameter of the second stepped hole 322 may be greater than or equal to the diameter of the lens barrel housing of the optical engine assembly. When the optical engine assembly 10 and the boss assembly 30 are mounted together, the optical engine assembly can extend into the aforementioned second stepped hole 322 and first stepped hole 321, and the lens barrel housing of the optical engine assembly can be connected to the second stepped hole 322 by adhesive. Understandably, since the inner diameter of the second step hole is smaller than that of the first step hole, when applying adhesive between the second step hole 322 and the lens barrel housing of the optical engine assembly, the amount of adhesive used can be reduced while maintaining the movement and / or rotation of the optical engine assembly 10.

[0068] In some embodiments, the cross-sectional shape of the through-hole is the same as the cross-sectional shape of the optomechanical component.

[0069] In some embodiments, the cross-sectional shape of the optomechanical component can be circular or polygonal (e.g., triangle, rectangle, etc.), and the cross-sectional shape of the through hole can be a circle or polygonal corresponding to the optomechanical component.

[0070] By using a through-hole with the same cross-sectional shape as the optomechanical component, the amount of adhesive used can be reduced when applying adhesive between the surface of the optomechanical component housing and the surface of the through-hole.

[0071] In some embodiments, the sleeve assembly is made of a light-transmitting material, such as acrylic.

[0072] In some embodiments, the sleeve assembly may be composed of a light-transmitting material that has adhesive properties. Preferably, the sleeve assembly may be composed of a transparent acrylic material. When the sleeve assembly is mounted on the optomechanical assembly and the optomechanical assembly is mounted on the boss assembly, the sleeve assembly can be irradiated with coagulation light along its axial direction. When the sleeve assembly is made of transparent acrylic, the coagulation light can penetrate the sleeve assembly and irradiate the adhesive between the sleeve assembly and the boss assembly to achieve adhesive coagulation.

[0073] In some embodiments, the aforementioned coagulation light may include infrared and ultraviolet light. When the coagulation light is infrared, the thermal effect of the infrared light can raise the temperature of the adhesive when it irradiates the adhesive, thereby accelerating the curing of the adhesive. Preferably, the aforementioned coagulation light can be ultraviolet light, and the aforementioned adhesive may include a photoinitiator. When ultraviolet light irradiates the adhesive between the sleeve assembly 20 and the boss assembly, the photoinitiator in the adhesive can generate free radicals or cations, initiating a polymerization reaction in the adhesive, thereby achieving rapid curing. By using ultraviolet light to coagulate the adhesive, the adhesive can achieve high bonding strength in a short period of time, thereby accelerating the curing speed of the adhesive.

[0074] The solution of this application facilitates the curing of the adhesive between the sleeve assembly and the boss assembly, thereby facilitating the curing of the optomechanical assembly.

[0075] Figure 3 An exemplary cross-sectional view of the optomechanical mounting structure of other embodiments of this application is shown. For example... Figure 3 As shown, the optical engine mounting structure includes an optical engine assembly 10, a sleeve assembly 20, and a boss assembly 30. The optical engine assembly 10 may also include a limiting part 12, the radial dimension of which is larger than the inner diameter of the sleeve assembly, so as to limit the sleeve assembly 20 in the axial direction. The limiting part 12 has a groove 121 on the side facing the sleeve assembly, and the sleeve assembly 20 has a protrusion 23 on the side facing the limiting part 12. When the sleeve assembly 20 is mounted on the optical engine assembly 10, the protrusion 23 can extend into the groove to position the sleeve assembly 20.

[0076] In some embodiments, the housing of the optomechanical assembly can be stepped. The housing may include a limiting portion 12 and a main body portion, wherein the radial dimension of the limiting portion may be larger than the radial dimension of the main body portion, and the side of the limiting portion facing the sleeve assembly may be a limiting surface 122. The sleeve assembly 20 may also have a third mounting surface 24 opposite to the second mounting surface 22, which may face the aforementioned limiting surface 122. The aforementioned second mounting surface 22 may be parallel to the boss mounting surface 31, and the third mounting surface 24 may be parallel to or inclined to the second mounting surface 22.

[0077] Furthermore, a groove 121 may be provided on the aforementioned limiting surface, and a protrusion 23 may be provided on the third mounting surface opposite to the groove 121. When the sleeve assembly and the optomechanical assembly are installed together, the protrusion 23 can extend into the groove 121, thereby enabling the positioning of the sleeve assembly 20.

[0078] It is understandable that when the second mounting surface 22 and the third mounting surface 24 are inclined, the axial cross-section of the sleeve assembly can be polygonal (e.g., trapezoidal). When the sleeve assembly 20 rotates along the axis of the optomechanical assembly, the second mounting surface 22 and the boss mounting surface 31 can intersect (i.e., the second mounting surface and the boss mounting surface are not parallel). In order to make the second mounting surface 22 and the boss mounting surface 31 parallel, a protrusion 23 can be provided on the third mounting surface and a groove 121 can be provided on the limiting surface 122, so that the sleeve assembly can be fitted onto the optomechanical assembly at a preset angle.

[0079] By providing a groove 121 on the limiting portion and a protrusion 23 on the sleeve assembly, when the sleeve assembly is installed on the optical-mechanical assembly 10, the protrusion 23 can extend into the groove 121, allowing the sleeve assembly 20 to be installed on the optical-mechanical assembly 10 at a preset angle, and ensuring that the second mounting surface 22 is parallel to the boss mounting surface 31. It is understood that without the protrusion 23 and the groove 121, when the sleeve assembly is fitted onto the optical-mechanical assembly, the second mounting surface 22 and the boss mounting surface 31 could be inclined. In this case, to ensure that the second mounting surface 22 and the boss mounting surface 31 are parallel, the sleeve assembly 20 needs to be rotated for adjustment. The protrusion 23 and the groove 121 improve the installation efficiency of the optical-mechanical assembly.

[0080] Figure 4 An exemplary block diagram of an installation method 400 for an optomechanical mounting structure according to some embodiments of this application is shown. The optomechanical mounting structure includes an optomechanical component, a sleeve component, and a boss component. The optomechanical component has an optomechanical mounting surface. The sleeve component is sleeved onto the optomechanical component and has a first mounting surface and a second mounting surface inclined to the first mounting surface, wherein the first mounting surface is connected to the optomechanical mounting surface. The boss component has a boss mounting surface on one side facing the sleeve component, and the boss mounting surface is connected to the second mounting surface. The installation method 400 includes: S401 sleeved onto the optomechanical component; S402 obtaining a preset mounting angle; S403 pre-installing the optomechanical component with the sleeve component sleeved onto the boss component based on the preset mounting angle; and S404 adjusting the optomechanical component to achieve the installation of the optomechanical component.

[0081] In some embodiments, the sleeve assembly may include a first mounting surface, a second mounting surface, and a third mounting surface, the third mounting surface including a protrusion. The optomechanical assembly may include a limiting portion, which may include a groove. When the sleeve assembly is fitted onto the optomechanical assembly, the sleeve assembly can be fitted onto the optomechanical assembly by mounting the aforementioned protrusion and groove together. Further, the sleeve assembly and the optomechanical assembly can be connected by adhesive bonding, threaded connection, or interference fit. In some embodiments, the adhesive may include optically transparent adhesive, epoxy underfill adhesive, and UV adhesive, etc.

[0082] In some embodiments, the sleeve assembly may be made of transparent acrylic material. When the sleeve assembly is bonded to the optomechanical assembly with adhesive, the curing of the adhesive can be accelerated by coagulation light. When the coagulation light shines on the outer surface of the sleeve assembly, since the sleeve assembly is made of transparent acrylic material, the coagulation light can pass through the sleeve assembly and shine on the adhesive to accelerate the curing of the adhesive, thereby achieving the bonding between the sleeve assembly and the optomechanical assembly.

[0083] After assembling the sleeve assembly and the optomechanical assembly together, the optomechanical assembly can be pre-installed in the boss assembly, which will be combined later. Figure 5 A method for pre-installing an optomechanical assembly with a sleeve assembly attached into the boss assembly is described in detail.

[0084] In some embodiments, the optomechanical mounting structure can be disposed on the frame of the AR glasses, and the frame may also be provided with a waveguide surface. In some embodiments, the preset mounting angle can be determined according to the type of the waveguide surface, and further, the preset mounting angle can be obtained from the specifications of the aforementioned waveguide surface. For example, when the waveguide surface is a planar waveguide, the preset mounting angle can be determined according to the refractive index of the planar waveguide and the designed optical path. When the waveguide surface is a wedge-shaped waveguide, the preset mounting angle can be determined by the tilt angle of the wedge-shaped waveguide.

[0085] In some embodiments, adjusting the optical engine assembly may include performing binocular autofocus (AA) fusion on the optical engine assembly. In some embodiments, it is understood that when the optical engine assembly, sleeve assembly, and boss assembly are mounted together, due to manufacturing and / or installation deviations, if the optical engine is positioned at a preset mounting angle, the image displayed in the AR glasses may not be accurately fused in the eyes, resulting in blurring, ghosting, or poor fusion of real and virtual images. Therefore, AA fusion is necessary to adjust the angle of the optical engine assembly to optimize image presentation and binocular fusion, reduce aberrations and distortions, and improve user comfort and visual experience. The aforementioned fusion may include binocular fusion.

[0086] In one embodiment, the optomechanical component can be AA-coupled based on the optomechanical component and its corresponding waveguide surface, so that the position of the optomechanical component can be adjusted according to the result of the AA-coupled phase. Adjusting the position of the optomechanical component may include rotating the optomechanical component and moving the optomechanical component.

[0087] The optomechanical assembly, with the sleeve assembly attached, is pre-installed onto the boss assembly. When it is necessary to disassemble the optomechanical assembly, the sleeve assembly can be disassembled using a clamping tool to remove the optomechanical assembly, thereby avoiding damage to the optomechanical system caused by directly disassembling the optomechanical assembly.

[0088] Figure 5 An exemplary block diagram of a method 500 for pre-installing an optomechanical assembly with a sleeve assembly in a boss assembly based on the preset mounting angle, according to some embodiments of this application, is shown. The method includes: S501 pre-applying an adhesive on the outer surface of the optomechanical assembly and the second mounting surface; S502 pre-installing the optomechanical assembly in the boss assembly according to the preset mounting angle; wherein the adhesive is used to pre-bond the pre-installed boss assembly and the sleeve assembly.

[0089] In some embodiments, adhesive can be applied to the second mounting surfaces of the lens barrel housing of the optical engine assembly and the sleeve assembly before the optical engine assembly is mounted in the boss assembly.

[0090] Furthermore, after obtaining the preset mounting angle, the optical-mechanical assembly, after applying adhesive, can be inserted into the through-hole of the boss assembly along the preset mounting angle. It is understood that during the insertion of the optical-mechanical assembly into the through-hole, since the optical-mechanical assembly moves towards the waveguide relative to the through-hole, the through-hole moves away from the waveguide relative to the optical-mechanical assembly. It is also understood that when the adhesive on the lens barrel housing of the optical-mechanical assembly comes into contact with the through-hole, the adhesive can move along with the through-hole relative to the optical-mechanical assembly in the direction away from the waveguide, thereby preventing the adhesive from flowing into the lens of the optical-mechanical assembly.

[0091] In some embodiments, after the dispensed optical-mechanical assembly is inserted into the through-hole of the boss assembly along the preset mounting angle, the adhesive between the lens barrel housing and the inner wall of the through-hole, and the adhesive between the second mounting surface of the sleeve assembly and the boss mounting surface of the boss assembly, can be pre-bonded. It is understood that, since the adhesive has not yet solidified and the amount dispensed is small, the optical-mechanical assembly can be rotated and / or moved within a preset range, thereby facilitating subsequent AA (auto-alignment) and adjustment of the optical-mechanical assembly.

[0092] Figure 6An exemplary block diagram is shown illustrating a method 600 for adjusting the optical engine assembly according to some embodiments of this application to achieve the mounting of the optical engine assembly. As... Figure 6 As shown, the method 600 includes: S601 performing optical correction on the optomechanical assembly to adjust the position of the optomechanical assembly; S602 applying adhesive between the sleeve assembly and the boss assembly; S603 irradiating the boss assembly, sleeve assembly and / or optomechanical assembly along the direction connecting the sleeve assembly and the boss assembly to achieve the installation of the optomechanical assembly.

[0093] In some embodiments, optical correction of the optomechanical assembly may include AA-coupling of the optomechanical assembly. It should be understood that when the optomechanical assembly is inserted into the through-hole, the adhesive between the outer shell of the optomechanical assembly and the inner wall of the through-hole, as well as the adhesive between the second mounting surface and the boss mounting surface, has not yet been irradiated with coagulating light. Therefore, the adhesive has not yet solidified. At this time, while ensuring a certain degree of adhesion between the optomechanical assembly and the boss assembly, the optomechanical assembly can be adjusted, thereby changing its position. Changing the position of the optomechanical assembly may include rotating and / or moving the optomechanical assembly.

[0094] In some embodiments, after the optomechanical assembly is adjusted, adhesive can be applied between the second mounting surface of the sleeve assembly and the boss mounting surface of the boss assembly. It is understood that the amount of adhesive used at this time can be greater than the amount of adhesive used for pre-applied adhesive on the outer surface of the optomechanical assembly and the second mounting surface. After applying adhesive between the second mounting surface of the sleeve assembly and the boss mounting surface of the boss assembly, the boss assembly, sleeve assembly, and / or optomechanical assembly can be irradiated with coagulating light along the direction connecting the sleeve assembly and the boss assembly. In some embodiments, irradiation can be performed from the waveguide toward the boss assembly along the direction connecting the sleeve assembly and the boss assembly. It is understood that since the waveguide can be composed of a light-transmitting material, the coagulating light can penetrate the waveguide and irradiate the adhesive between the sleeve assembly and the optomechanical assembly. In other embodiments, irradiation can also be performed from the sleeve assembly toward the boss assembly. Understandably, since the sleeve assembly can be made of transparent acrylic material, the solidification light can penetrate the sleeve assembly and thus irradiate the adhesive between the sleeve assembly and the boss assembly, as well as the adhesive between the sleeve assembly and the optomechanical assembly, thereby accelerating the solidification of the adhesive and achieving the fixation of the optomechanical assembly.

[0095] In some embodiments, this solution also discloses a smart glasses, including: an optical engine mounting structure as described above; and a frame on which a boss assembly of the optical engine mounting structure is disposed.

[0096] In some embodiments, the smart glasses may further include an optical waveguide that can be mounted on the frame, and the optomechanical components of the optomechanical mounting structure can be arranged toward the coupling grating of the optical waveguide, such that an image in the optomechanical components can be introduced into the optical waveguide along the coupling grating.

[0097] In summary, the solution of this application connects the first mounting surface of the sleeve assembly to the optical engine mounting surface, and the second mounting surface of the sleeve assembly to the boss mounting surface. This increases the contact area when the optical engine assembly is fixed with adhesive, thereby improving the stability of the bond between the boss mounting surface and the optical engine assembly. Furthermore, since the optical engine assembly is bonded to the sleeve assembly, and the sleeve assembly is bonded to the boss assembly, when it is necessary to disassemble the optical engine assembly, it can be disassembled between the second mounting surface of the sleeve assembly and the boss mounting surface. This allows the sleeve assembly and the boss assembly to be separated, thus enabling the disassembly of the optical engine assembly and avoiding damage to the optical engine caused by the adhesive between the optical engine assembly and the sleeve assembly during disassembly.

[0098] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. An optical machine mounting structure, characterized by comprising: The optical machine mounting structure comprises an optical machine assembly (10), a sleeve assembly (20) and a boss assembly (30); wherein, The optical machine assembly (10) has an optical machine mounting surface (11); The sleeve assembly (20) is sleeved on the optical machine assembly (10), and the sleeve assembly (20) has a first mounting surface (21) and a second mounting surface (22) which is arranged obliquely to the first mounting surface (21), wherein the first mounting surface (21) is connected with the optical machine mounting surface (11); The boss assembly (30) has a boss mounting surface (31) on the side facing the sleeve assembly (20), and the boss mounting surface (31) is connected with the second mounting surface (22).

2. The optical engine mounting structure according to claim 1, wherein The boss mounting surface (31) is arranged in parallel with the second mounting surface.

3. The optical engine mounting structure according to claim 1, wherein The boss assembly (30) is provided with a through hole (32) whose axis is perpendicular to the boss mounting surface (31).

4. The optical engine mounting structure according to claim 3, wherein The optical machine assembly comprises a lens barrel portion, and the diameter of the lens barrel portion is less than or equal to the diameter of the through hole.

5. The optical engine mounting structure according to claim 3, wherein The optical machine assembly (10) at least partially extends into the through hole (32).

6. The optical engine mounting structure according to claim 3, wherein The cross-sectional shape of the through hole is the same as the cross-sectional shape of the optical machine assembly.

7. The optical engine mounting structure according to claim 1, wherein The sleeve assembly (20) is made of transparent acrylic material.

8. The optical engine mounting structure according to claim 1, wherein The optical machine assembly comprises a limiting portion (12), and the cross-sectional dimension of the limiting portion is greater than the inner diameter of the sleeve assembly, so as to limit the axial movement of the sleeve assembly (20); The limiting portion (12) is provided with a groove (121) on the side facing the sleeve assembly, and the sleeve assembly (20) is provided with a protrusion (23) on the side facing the limiting portion (12); When the sleeve assembly (20) is mounted on the optical machine assembly (10), the protrusion (23) can extend into the groove, so as to position the sleeve assembly (20).

9. A smart glass, characterized by The optical machine mounting structure comprises: The optical machine mounting structure according to any one of claims 1-8; And A mirror frame, and the boss assembly of the optical machine mounting structure is arranged on the mirror frame.

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