An augmented reality display assembly and device

Abstract

The utility model relates to optical imaging technical field discloses a kind of augmented reality display components and equipment, display component includes: two optical modules;Support seat, division two installation areas, the two ends of each installation area are slidably provided with first sliding seat and second sliding seat respectively, first sliding seat and second sliding seat are fixed in the two ends of optical module respectively, so that optical module is slidably connected in support seat;Optical module and support seat have gap between;First sliding seat and second sliding seat are all provided with threading hole that is communicated with gap to form threading path;The optical module is threaded and is arranged in threading path, and extends to outside along support seat direction.The first, second sliding seat can be set to realize the stable sliding of optical module to adjust pupil distance, and the setting diameter of threading path can standardize the trend of wire arrangement, avoid wire disorder knot, guarantee the rationality of wire arrangement, reduce the risk of wire abrasion fracture when adjusting, improve the use reliability and life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of optical imaging technology, and in particular to an augmented reality display component and device. Background Technology

[0002] AR (Augmented Reality) technology, as a promising emerging technology, has shown broad application prospects in many fields such as cultural tourism, film viewing, entertainment, and medical assistance. As the core component of AR devices, the performance of the AR display module directly determines the display effect and user experience of the devices. Among them, the AR-BB optical display module (i.e., the "birdbath" optical display module) has become one of the important technical solutions in the field of AR technology due to its early advantages in field of view and mass production maturity.

[0003] In practical applications, existing AR-BB optical imaging modules still face the following problems: To meet the interpupillary distance (IPD) adaptation needs of different users, some AR-BB optical imaging modules incorporate IPD adjustment mechanisms. However, the cable layout design of these mechanisms often has flaws. Because the relevant components need to undergo relative displacement during adjustment, existing cables often lack reasonable constraints and guiding structures. During repeated adjustments or long-term use, the cables are prone to positional shifts and tangling with component movement, leading to misalignment or even knots.

[0004] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0005] This invention provides an augmented reality display component and device to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An augmented reality display component includes:

[0008] Two optical modules, which correspond to the left eye and the right eye respectively;

[0009] The support base is divided into two mounting areas corresponding to the optical module. Each mounting area has a first slide and a second slide slidably mounted at both ends. The first slide and the second slide are fixed to both ends of the optical module, so that the optical module is slidably connected to the support base.

[0010] in:

[0011] There is a gap between the optical module and the support base;

[0012] Both the first slide and the second slide have threading holes, which are connected to the gap, thereby forming a threading path that passes through both ends along the length of the support.

[0013] The optical module's wiring is threaded through the wiring path and extends to the outside along the support base.

[0014] Optionally, the support seat is further provided with a guide seat corresponding to the distribution area of ​​the first slide and the second slide. The guide seat is sleeve-shaped and forms a sliding space for accommodating each of the first slide and the second slide.

[0015] Optionally, the connection structures of the two second slides and the corresponding guide seats are independent of each other.

[0016] Optionally, the two second slides are connected to the guide seat via a transmission mechanism;

[0017] The transmission mechanism includes racks respectively disposed on the two second slides, and gears that mesh with the two racks simultaneously, the gears being rotatably connected to the side wall of the guide seat.

[0018] Optionally, a mounting seat is fixed on the guide seat located between the two mounting areas, and the mounting seat has a mounting hole, within which the gear is rotatably confined.

[0019] Optionally, the meshing portion of the gear and rack is coated with damping oil;

[0020] And / or, the contact areas between the first slide, the second slide and the guide seat are all coated with damping oil.

[0021] Optionally, the support base is provided with a guide groove, and the top of the optical module is provided with a guide post corresponding to the position of the guide groove, and the guide post is slidably limited within the guide groove.

[0022] Optionally, a limiting bead is embedded in the side wall of at least one of the first slides and at least one of the second slides, and at least two limiting grooves arranged along the length direction are provided at corresponding positions on the inner wall of the guide seat, and the limiting bead can be engaged or disengaged from the limiting groove in the movement path.

[0023] Optionally, the optical module includes components arranged sequentially along the optical path:

[0024] A display screen used to generate image light;

[0025] A lens is used to transmit and adjust the light of the image. The lens has planar steps on opposite sides. The planar steps include a first inner wall and a second inner wall that are perpendicularly connected to each other. The first inner wall and the second inner wall of the planar steps are respectively provided with a first light-absorbing layer.

[0026] A first optical element is used to reflect and transmit the image light;

[0027] The second optical element is used to reflect the image light and transmit external light. The image light reflected by the second optical element and the external light transmitted by the second optical element reach the first optical element and are transmitted by the first optical element before entering the user's observation side.

[0028] It also includes a bracket, the lens is disposed on the bracket, and the bracket has protrusions at positions on both sides of the lens that match the planar steps, the protrusions and the first light-absorbing layer abut against each other.

[0029] This invention also provides an augmented reality display device, including the augmented reality display components as described in any of the preceding claims.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] This utility model provides an augmented reality display component and device. By setting a first and a second slide base to slide in cooperation with the support base, the optical module can be stably slid to adjust the interpupillary distance. The component is provided with a wire hole, which forms a continuous wire path with the gap, which can standardize the wire routing, avoid wire misalignment and knots, and ensure the rationality of the wire arrangement. This reduces the risk of wire wear and breakage during adjustment and improves the reliability and lifespan of the device.

[0032] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of an augmented reality display component provided in an embodiment of this utility model;

[0035] Figure 2 This is an exploded view of one structure of an augmented reality display component provided in this embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of an augmented reality display component after some parts have been hidden, according to an embodiment of this utility model.

[0037] Figure 4 This is a cross-sectional view of one structure of an augmented reality display component provided in an embodiment of the present invention;

[0038] Figure 5 yes Figure 4 Enlarged view of section A;

[0039] Figure 6 This is an exploded view of another structure of an augmented reality display component provided in this embodiment of the present invention;

[0040] Figure 7 This is a cross-sectional view of another structure of an augmented reality display component provided in an embodiment of this utility model;

[0041] Figure 8 yes Figure 7 Enlarged view of section B;

[0042] Figure 9 This is a schematic diagram of the structure of an augmented reality display component provided in an embodiment of this utility model;

[0043] Figure 10 This is a cross-sectional view of the display screen, lens, and bracket in an augmented reality display assembly provided in this embodiment of the present invention;

[0044] Figure 11 This is a partial cross-sectional view of a lens in an augmented reality display component provided in an embodiment of this utility model;

[0045] Figure 12 This is a schematic diagram of the structure of a lens in an augmented reality display component provided in an embodiment of this utility model;

[0046] Figure 13 This is a schematic diagram of the structure of a lens and a support in an augmented reality display component provided in an embodiment of this utility model;

[0047] Figure 14 This is a partial cross-sectional view of a lens and support in an augmented reality display assembly provided in this embodiment of the present invention;

[0048] Figure 15 This is a schematic diagram of the structure of a lens and a second light-absorbing layer in an augmented reality display component provided by an embodiment of this utility model.

[0049] Reference numerals: 10, Optical module; 101, Guide post; 11, Display screen; 12, Lens; 121, Planar step; 1211, First inner wall; 1212, Second inner wall; 13, First optical element; 14, Second optical element; 15, Bracket; 151, Protrusion; 16, First light-absorbing layer; 17, Light-blocking protrusion; 18, Second light-absorbing layer; 19, User observation side; 21, Support seat; 211, Guide seat; 2111, Limiting groove; 212, Guide groove; 221, First slide; 222, Second slide; 231, Limiting bead; 232, First screw; 24, Through hole; 31, Rack; 32, Gear; 321, Second screw; 322, Mounting seat; 33, Cover plate; Detailed Implementation

[0050] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0051] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0052] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0053] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0054] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0055] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0056] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0057] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0058] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0059] To address the problem that when adjusting interpupillary distance in augmented reality display devices, the ribbon cable is prone to positional displacement and tangling as the components move, resulting in confusion or even knots, this utility model provides an augmented reality display component.

[0060] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0061] Please refer to the figure. This embodiment provides an augmented reality display component, including two optical modules 10 corresponding to the left and right eyes respectively, and also includes:

[0062] The support base 21 is divided into two mounting areas corresponding to the two optical modules 10. Each mounting area has a first slide block 221 slidably mounted at its end furthest from the other mounting area, and a second slide block 222 slidably mounted at its end closest to the other mounting area. The first slide block 221 and the second slide block 222 are respectively fixed to both ends of the optical module 10, allowing the optical module 10 to be slidably connected to the support base 21. Specifically, the first slide block 221 and the second slide block 222 are respectively fixed to the corresponding optical module 10 by a first screw 232.

[0063] By setting a first slide 221 and a second slide 222 on the support 21, both ends of the optical module 10 can be slidably connected to the support 21, so that the whole module can move stably along the length of the support 21 to achieve the purpose of adjusting the interpupillary distance.

[0064] Please refer to further information. Figure 2 and Figure 3 ,in:

[0065] There is a gap between the optical module 10 and the support 21;

[0066] Both the first slide 221 and the second slide 222 are provided with threading holes 24, which are connected to the gap, thereby forming a threading path that runs through both ends along the length of the support 21.

[0067] The cable of the optical module 10 is threaded through the cable path and extends to the outside along the support 21.

[0068] Because a gap is reserved between the support 21 and the optical module 10, and a wire hole 24 is opened in the slide, the gap is combined to form a wire path that runs through both ends, ensuring that the cable extends smoothly during the sliding process and will not get tangled or knotted due to the interpupillary distance adjustment. While realizing the interpupillary distance adjustment, the cable layout is neat and beautiful.

[0069] In some embodiments, to improve the stability of the sliding of the optical module 10, the support 21 is also provided with a guide seat 211 corresponding to the distribution area of ​​the first slide 221 and the second slide 222. The guide seat 211 is sleeve-shaped and forms a sliding space for accommodating each first slide 221 and the two second slides 222.

[0070] By forming a sleeve-shaped guide seat 211 on the support seat 21, which matches the shape of the first slide 221 and the second slide 222, each slide can slide smoothly within the guide seat 211, avoiding shaking or tilting due to single-point contact, thus achieving reliable guidance and smooth sliding, and ensuring the accuracy and stability of pupil distance adjustment.

[0071] Please refer to the reference. Figure 4 and Figure 5 In some embodiments, limiting beads 231 are embedded in the sidewalls of at least one first slide 221 and at least one second slide 222. At least two limiting grooves arranged along the length direction are provided at corresponding positions on the inner wall of the guide seat 211. The limiting beads 231 can engage or disengage from the limiting grooves on the movement path. Through the cooperation of the limiting beads 231 and the limiting grooves, each slide can be temporarily locked at the groove position when sliding, thereby preventing the slide from accidentally over-moving or disengaging. This allows the two optical modules 10 to temporarily remain at the current interpupillary distance adjustment position, while providing a clear segmented positioning feel and improving the user's operating experience.

[0072] It is understandable that one of the first slide block 221 and the second slide block 222 fixed on each optical module 10 is provided with a limiting bead 231, which can engage or disengage from the limiting groove on the inner wall of the corresponding guide seat 211, thereby enabling the adjustment and positioning of the optical module 10. If it is necessary to improve the user experience and stability during adjustment, a limiting bead 231 can also be provided in each of the first slide block 221 and the second slide block 222, which can be adjusted according to the actual situation.

[0073] In addition, please refer to again Figures 1 to 3 The support base 21 has a guide groove 212, and the top of the optical module 10 is provided with a guide post 101 corresponding to the position of the guide groove 212. The guide post 101 is slidably limited within the guide groove 212 to limit the sliding path of the optical module 10, thereby improving the accuracy and stability of the interpupillary distance adjustment.

[0074] Please refer to Figure 4 In some embodiments, the connection structures of the two second slides 222 with the corresponding guide seats 211 are independent of each other, so that the optical modules 10 of the left and right eyes can be adjusted independently.

[0075] Specifically, by establishing independent connections between the two second slides 222 and the guide seat 211, the movement of the two optical modules 10 does not interfere with each other. During adjustment, the user can independently adjust the interpupillary distance according to the comfort of one eye, improving adaptability and flexibility of use.

[0076] Please refer to the reference. Figures 6 to 8 In some embodiments, the two optical modules 10 constitute binocular linkage adjustment. Specifically, the two second slides 222 are connected to the guide seat 211 through a transmission mechanism; the transmission mechanism includes racks 31 respectively disposed on the two second slides 222, and gears 32 that mesh with the two racks 31 simultaneously, the gears 32 being rotatably connected to the side wall of the guide seat 211.

[0077] When one of the second slides 222 moves, the gear 32 drives the other second slide 222 to move synchronously through meshing, realizing the symmetrical movement of the two optical modules 10. Users can quickly adjust the interpupillary distance through unilateral operation, making the operation simpler.

[0078] In some embodiments, to ensure reliable positioning of the gear 32, a mounting seat 322 is fixed to the guide seat 211 located between the two mounting areas by a second screw 321. The mounting seat 322 has a mounting hole, and the gear 32 is rotatably confined within the mounting hole. By providing a mounting seat 322 on the guide seat 211 and providing a mounting hole therein, the gear 32 shaft can be rotatably mounted and is confined, preventing offset, thereby ensuring the gear 32 is firmly installed and the transmission accuracy is high, improving the reliability of the linkage adjustment.

[0079] Furthermore, a cover plate 33 is provided at the bottom of the transmission mechanism. The cover plate 33 is fixedly connected between the two second slides 222 to support and protect the transmission mechanism.

[0080] In some embodiments, the meshing parts of the gear 32 and the rack 31 are coated with damping oil, which generates moderate resistance during sliding adjustment, thereby ensuring stable adjustment and preventing displacement due to vibration or slight contact.

[0081] In some embodiments, the contact areas of the first slide 221, the second slide 222 and the guide seat 211 are all coated with damping oil to make the sliding smoother, while improving the feel and stability of the adjustment, so that the optical module 10 can be accurately stopped at the target position.

[0082] Understandably, the core purpose of interpupillary distance adjustment is to precisely align the imaging center with the user's pupil, thus solving the fundamental problem of seeing straight and without double vision.

[0083] However, if there is stray light interference, even if the interpupillary distance is adjusted accurately, the image clarity and contrast will be weakened. This stray light mainly enters through the peripheral part of lens 12 and parallel to lens 12, affecting lens 12 and causing a decrease in image forming quality, so it needs to be addressed.

[0084] In order to achieve the purpose of eliminating stray light and solve the aforementioned problems, the optical module 10 is further defined in this embodiment.

[0085] Please refer to Figure 9 In this embodiment, the optical module 10 includes a display screen 11, a lens 12, a first optical element 13, and a second optical element 14 arranged sequentially along the optical path. The display screen 11 is used to generate image light. The lens 12 is located on one side of the display screen 11 and is used to transmit and adjust the image light. The first optical element 13 is opposite to the lens 12 and is located on the side of the lens 12 that is away from the display screen 11. The first optical element 13 is used to transmit and reflect the adjusted image light. The second optical element 14 is located on the optical path reflected by the first optical element 13.

[0086] On the one hand, the second optical element 14 can reflect image light from the first optical element 13. The image light reflected by the second optical element 14 reaches the first optical element 13 and enters the user observation side 19 after being transmitted through the first optical element 13. On the other hand, the second optical element 14 is also used to transmit external light. Specifically, the external light reaches the first optical element 13 after being transmitted through the second optical element 14 and finally enters the user observation side 19 after being transmitted through the first optical element 13. At this time, the user observation side 19 can see the overlapping image light and the external light, thus achieving a visual enhancement effect.

[0087] Combination Figure 10 In this embodiment, to reduce the interference of stray light incident from the side on the lens 12, the display device further includes a bracket 15. The lens 12 is mounted on the bracket 15. Furthermore, planar steps 121 are recessed from the outside to the inside at the opposite sides of the lens 12. The planar steps 121 include a first inner wall 1211 and a second inner wall 1212 that are perpendicularly connected to each other. In addition, two protrusions 151 are fixedly provided at the opposite sides of the bracket 15 relative to the lens 12. The number of protrusions 151 is two, and they correspond one-to-one with the two planar steps 121. The ends of the protrusions 151 can be similar to the contour of the planar steps 121, so that the protrusions 151 can match and fit with the planar steps 121, thereby realizing the mutual positioning between the bracket 15 and the lens 12.

[0088] Furthermore, refer to Figure 11A first light-absorbing layer 16 is also provided on the planar step 121. The first light-absorbing layer 16 is respectively disposed on the first inner wall 1211 and the second inner wall 1212. The first light-absorbing layer 16 has a light-absorbing effect and can absorb stray light entering the lens 12 from the planar step 121. Furthermore, when the protrusion 151 and the planar step 121 are fitted together, the first light-absorbing layer 16 is located between the lens 12 and the protrusion 151, and the first light-absorbing layer 16 abuts against the protrusion 151. The protrusion 151 can block stray light.

[0089] The display of this utility model is used to generate image light, which is transmitted to the user observation side 19 through lens 12, first optical element 13 and second optical element 14 to form a virtual image, so that the user can see the image light generated by the display. At the same time, external light is transmitted to the user observation side 19 through second optical element 14 and first optical element 13. The external light and the image light overlap to achieve a visual enhancement effect.

[0090] Based on this, on the one hand, by fitting the protrusion 151 into the planar step 121, the lens 12 is restricted by the degrees of freedom of movement provided by the first inner wall 1211 and the second inner wall 1212, thereby improving the installation accuracy and stability of the lens 12.

[0091] On the other hand, by providing a first light-absorbing layer 16 at the first inner wall 1211 and the second inner wall 1212 that are connected to each other, and by abutting the first light-absorbing layer 16 with the protrusion 151, a tightly fitted light-blocking and light-absorbing structure is formed. Under this condition, when stray light located on the outside wants to enter the opposite sides of the lens 12 from a direction parallel to the lens 12, it will first be blocked by the protrusion 151 to reduce some stray light interference. When another part of stray light enters the opposite sides of the lens 12, it can be absorbed by the light-absorbing effect of the first light-absorbing layer 16. With this setting, the anti-stray light interference effect is significant, the quality of the image light transmitted by the lens 12 is significantly improved, and finally the quality of the image light transmitted to the user observation side 19 is improved.

[0092] Optional, such as Figure 10 As shown, the display screen 11 is mounted on the bracket 15. Typically, the display screen 11 can be fixedly mounted on the side of the bracket 15 that is opposite to the lens 12. In this case, the display screen 11 and the lens 12 use the bracket 15 as the same mounting reference, which can improve the relative positional accuracy between the display screen 11 and the lens 12, so as to ensure that the image light can be more accurately injected into the lens 12.

[0093] Furthermore, in this embodiment, the first light-absorbing layer 16 is an ink coating layer applied to the surface of the mirror. Specifically, the ink coating layer can be formed by first applying ink to the surface of the lens 12, and then drying or air-drying it to form an ink coating layer on both sides of the lens 12. The ink coating layer has a good light absorption effect and can effectively improve the light absorption effect of the first light-absorbing layer 16.

[0094] Optionally, the first light-absorbing layer 16 can be made of a light-absorbing material attached to the surface of the lens 12, such as a polarizer. Regardless of the light-absorbing structure used, any sheet structure that can achieve the light-blocking effect can be used, and all should be included in the interpretation of the feature of light-absorbing material.

[0095] Furthermore, referring to Figure 11 The lens 12 has a length direction and a width direction, and the first inner wall 1211 is parallel to the thickness direction of the lens 12. During the installation of the lens 12, it was found that the opening height of the planar step 121 affects the refraction effect of the lens 12. Specifically, when the opening height of the first inner wall 1211 is too high, the overall depth of the planar step 121 becomes too high, interfering with the refraction of light.

[0096] Based on this, in order to overcome the above-mentioned technical obstacles, optionally, the height of the first inner wall 1211 is h1, the center thickness of the lens 12 is h2, and the range of h1:h2 is between 0.005 and 0.1. In one embodiment, the value of h1:h2 is 0.005 or 0.1.

[0097] Experiments show that when the value of h1:h2 is less than 0.005, the depth of the planar step 121 is insufficient. Compared with the overall size of the lens 12, this depth cannot accurately position the planar step 121, and its setting accuracy may be affected. In addition, if the value of h1:h2 is greater than 0.1, the depth is too deep, which will affect the refraction of light. Therefore, the value of h1:h2 between 0.005 and 0.1 is most suitable, resulting in better installation and light absorption effects.

[0098] Furthermore, referring to Figure 12 The second inner wall 1212 is parallel to the plane of the lens 12, and the width of the second inner wall 1212 is between 0.3 mm and 3 mm. The width of the planar step 121 affects the mounting effect and refraction effect of the lens 12. Here, the width of the planar step 121 can also be understood as the width of the second inner wall 1212, and this width value is defined as the overlap width h3. In one embodiment, the value of h3 is 0.3 mm or 3 mm.

[0099] Experiments have shown that when the width of the second inner wall 1212 is less than 0.3 mm, the contact area between the lens 12 and the bracket 15 is too small, resulting in poor support. When the width of the second inner wall 1212 is greater than 3 mm, the connection between the bracket 15 and the lens 12 is too close to the inside of the lens 12, obstructing the image formation and affecting the refraction effect. Therefore, when the width of the second inner wall 1212 is between 0.3 mm and 3 mm, it can meet the basic requirements for image formation while also satisfying the installation stability of the lens 12, allowing the lens 12 to be stably and accurately mounted on the bracket 15.

[0100] In another embodiment, refer to Figure 13 The bracket 15 is provided with a light-blocking protrusion 17, which blocks the opposite sides of the lens 12 without the flat step 121. Specifically, the light-blocking protrusion 17 can be integrally connected with the bracket 15, and two sets of light-blocking protrusions 17 can be provided. The two sets of light-blocking protrusions 17 are respectively provided on the opposite sides of the bracket 15 without the protrusion 151. At the same time, the light-blocking protrusion 17 is in the shape of a long strip along the length of the bracket 15.

[0101] Based on the above configuration, the light-blocking protrusion 17 wraps around the side of the lens 12 and blocks the edge area of ​​the lens 12 in the width direction, thereby achieving a light-blocking effect and eliminating stray light entering from the side of the lens 12 where the planar step 121 is set. The stray light interference problem is further optimized.

[0102] Furthermore, the front end of the light-blocking protrusion 17 extends beyond the edge region of the lens 12, and the extension length is not less than 0.3mm, specifically 0.3mm.

[0103] Here, refer to Figure 14 The extended length of the light-blocking protrusion 17 is defined as h4. Experiments show that when h4 is not less than 0.3mm, the light-blocking protrusion can ensure that it has a sufficient blocking area to block more incident angles of stray light, so as to provide a good light-blocking effect for the lens 12 in the width direction.

[0104] In another embodiment, refer to Figure 15 The augmented reality device also includes a second light-absorbing layer 18, which is disposed on opposite sides of the lens 12 where the planar step 121 is not provided. The second light-absorbing layer 18 can absorb light and can perform light absorption processing on the opposite sides of the lens 12 where the planar step 121 is not provided, so as to eliminate stray light and improve the transmission quality of image light.

[0105] Optionally, the second light-absorbing layer 18 includes an ink coating layer coated on the surface of the lens 12. In a specific configuration, ink can be first coated on the surface of the lens 12, and after drying or air drying, an ink coating layer is finally formed on both sides of the lens 12. The ink coating layer has a good light absorption effect and can effectively improve the light absorption effect of the second light-absorbing layer 18.

[0106] Optionally, the second light-absorbing layer 18 includes a light-absorbing material attached to the surface of the lens 12. For example, a structure such as a polarizer can be used. Regardless of the light-absorbing structure adopted, any sheet structure that can achieve the light-blocking effect can be tried and should be included in the interpretation of the feature of light-absorbing material.

[0107] Based on the foregoing embodiments, the present invention provides an augmented reality display device, including two optical modules 10 corresponding to the left and right eyes respectively, and also including the augmented reality display components provided in the above embodiments.

[0108] The optical module 10 can be stably slidable to adjust the interpupillary distance by setting the first and second slides 222 to slide in cooperation with the support 21. The wire hole 24 is provided in the middle, which forms a continuous wire path with the gap, which can standardize the wire routing, avoid wires from being messy and tangled, and at the same time ensure the rationality of the wire arrangement, reduce the risk of wire wear and breakage during adjustment, and improve the reliability and life of the equipment.

[0109] Furthermore, in the optical module 10, planar steps 121 are formed on both opposite sides of the lens 12, and a light-absorbing layer is provided on the surface of the planar steps 121. By placing matching protrusions 151 on the bracket 15 and embedding the protrusions 151 into the planar steps 121, the light-shielding structure formed can reduce the influence of parallel light rays from opposite sides of the lens 12, avoid the degradation of image quality caused by stray light interference, and thus effectively ensure the image quality.

[0110] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of protection of this utility model. Any technical solutions resulting from equivalent structural or procedural substitutions or modifications made based on the essential concept of this application and utilizing the content described in the text and drawings of this application, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of protection of this utility model.

Claims

1. An augmented reality display component, characterized in that, include: Two optical modules, which correspond to the left eye and the right eye respectively; The support base is divided into two mounting areas corresponding to the optical module. Each mounting area has a first slide and a second slide slidably mounted at both ends. The first slide and the second slide are fixed to both ends of the optical module, so that the optical module is slidably connected to the support base. in: There is a gap between the optical module and the support base; Both the first slide and the second slide have threading holes, which are connected to the gap, thereby forming a threading path that passes through both ends along the length of the support. The optical module's cabling is threaded through the cabling path and extends outward along the support base.

2. The augmented reality display component according to claim 1, characterized in that, The support base is also provided with a guide seat corresponding to the distribution area of ​​the first slide and the second slide. The guide seat is sleeve-shaped and forms a sliding space for accommodating each of the first slide and the second slide.

3. The augmented reality display component according to claim 2, characterized in that, The connection structures of the two second slides and their corresponding guide seats are independent of each other.

4. The augmented reality display component according to claim 2, characterized in that, The two second slides are connected to the guide seat via a transmission mechanism; The transmission mechanism includes racks respectively disposed on the two second slides, and gears that mesh with the two racks simultaneously, the gears being rotatably connected to the side wall of the guide seat.

5. The augmented reality display component according to claim 4, characterized in that, A mounting base is fixed on the guide seat located between the two mounting areas, and the mounting base has a mounting hole, within which the gear is rotatably confined.

6. The augmented reality display component according to claim 4, characterized in that, The meshing parts of the gear and rack are coated with damping oil; And / or, the contact areas between the first slide, the second slide and the guide seat are all coated with damping oil.

7. The augmented reality display component according to claim 1, characterized in that, The support base is provided with a guide groove, and the top of the optical module is provided with a guide post corresponding to the position of the guide groove. The guide post is slidably limited within the guide groove.

8. The augmented reality display component according to claim 1, characterized in that, Limiting beads are embedded in the sidewalls of at least one first slide and at least one second slide. At least two limiting grooves arranged along the length direction are provided at corresponding positions on the inner wall of the guide seat. The limiting beads can be engaged or disengaged from the limiting grooves in the movement path.

9. The augmented reality display component according to any one of claims 1-8, characterized in that, The optical module comprises the following components arranged sequentially along the optical path: A display screen used to generate image light; A lens is used to transmit and adjust the light of the image. The lens has planar steps on opposite sides. The planar steps include a first inner wall and a second inner wall that are perpendicularly connected to each other. The first inner wall and the second inner wall of the planar steps are respectively provided with a first light-absorbing layer. A first optical element is used to reflect and transmit the image light; The second optical element is used to reflect the image light and transmit external light. The image light reflected by the second optical element and the external light transmitted by the second optical element reach the first optical element and are transmitted by the first optical element before entering the user's observation side. It also includes a bracket, the lens is disposed on the bracket, and the bracket has protrusions at positions on both sides of the lens that match the planar steps, the protrusions and the first light-absorbing layer abut against each other.

10. An augmented reality display device, characterized in that, Includes the augmented reality display component as described in any one of claims 1 to 9.

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