Ar display device

Abstract

An AR display device. In the AR display device, optical engines and a glasses frame are decoupled, such that the area and the thickness of the glasses frame are smaller, and the whole device is relatively light and thin. The AR display device comprises a glasses frame, optical waveguide lenses, glasses temples and optical engine modules; grooves are formed at both ends of the glasses frame; the two optical waveguide lenses are arranged in a spaced manner on the glasses frame; the two glasses temples are hinged to the two ends of the glasses frame respectively, and the glasses temples have an opened state in which the glasses temples are perpendicular to the glasses frame; an optical engine module is arranged at the end of each glasses temple close to the hinge point between the glasses temple and the glasses frame; when the glasses temples are in the opened state, the optical engine modules are located in the grooves.

Description

An AR display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202311524067.0 filed on November 15, 2023, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The present invention relates to the field of AR technology, and in particular to an AR display device. Background Art

[0004] AR (Augmented Reality) display devices, also known as AR glasses, are smart devices that can superimpose virtual information on real scenes, allowing users to see not only the real world but also "virtual images". The real and virtual environments are superimposed and presented to the user.

[0005] Existing AR display devices generally consist of a frame, temples, optical waveguide lenses, and an optical engine. The optical waveguide lenses are mounted on the frame, with the optical engines fixed to each end of the frame, and the temples are hingedly connected to each end of the frame. Since the optical engines are fixed to each end of the frame, they take up a considerable amount of installation space, increasing the size and thickness of the frame. This makes the entire AR display device appear thicker and heavier, affecting the user's wearing experience.

[0006] Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the AR display device in the prior art that the optical machine is fixed at both ends of the frame, which causes the area and thickness of the frame to increase, and the entire AR display device to appear relatively thick, affecting the user's wearing experience, thereby providing an AR display device that decouples the optical machine and the frame, has a smaller area and thickness of the frame, and is relatively light and thin as a whole.

[0008] In order to solve the above problems, the present invention provides an AR display device, comprising:

[0009] A mirror frame, wherein both ends of the mirror frame are provided with grooves;

[0010] Light waveguide lenses, two of which are spaced apart and arranged on the lens frame;

[0011] Temples, two temples being hinged to two ends of the frame respectively, and the temples being in an open state when perpendicular to the frame;

[0012] An optical machine module is provided at one end of each temple near the hinge point between the temple and the frame, and when the temple is in the open state, the optical machine module is located in the groove.

[0013] In an example, the temples and the frame are hingedly connected via a hinge assembly.

[0014] In the example, the shaft assembly includes: a shaft and a shell, the shaft is connected to the frame, the shell is sleeved on the shaft, and the shell can rotate around the shaft, and the temples are fixedly connected to the shell.

[0015] In the example, the rotating shaft assembly also includes: an upper fixing member and a lower fixing member, both of which are mounted on the shaft body, the upper fixing member is located above the shell, and the top end of the shaft body is clamped with the upper fixing member, and the lower fixing member is located below the shell, and the bottom end of the shaft body is clamped with the lower fixing member.

[0016] In an example, the top end of the shaft body has a clamping portion protruding from the main body, the upper fixing member is provided with a clamping slot, and the clamping portion is clamped with the clamping slot.

[0017] In an example, an annular groove is provided at the bottom end of the shaft body, a retaining spring is provided on the annular groove, and the retaining spring is connected to the lower fixing member.

[0018] In an example, upper and lower limit members are provided at both ends of the frame, the top surface of the shaft body contacts the bottom surface of the upper limit member, and the bottom surface of the shaft body contacts the top surface of the lower limit member.

[0019] In the example, the rotating shaft assembly also includes a reset mechanism arranged in the shell, and the reset mechanism includes: an elastic member, a rotating member and a limiting portion formed at the top of the lower fixed member, the elastic member is sleeved on the shaft body, and one end abuts against the shell, and the other end abuts against the top surface of the rotating member, the rotating member is sleeved on the shaft body, and two limiting grooves are provided at its bottom end, and the limiting portion can be engaged with any of the limiting grooves.

[0020] In the example, the limiting groove is an arc-shaped groove, and the two arc-shaped grooves are perpendicular to each other. The upper surface of the limiting portion is an arc surface, and the arc surface can be engaged with any of the arc-shaped grooves.

[0021] In the example, a first magnetic member is provided at one end of the temple near the hinge point between the temple and the frame, and a second magnetic member is provided at both ends of the frame. When the temple is in the open state, the first magnetic member and the second magnetic member are magnetically connected.

[0022] The present invention has the following advantages:

[0023] 1. The AR display device provided by the present invention comprises: a frame, an optical waveguide lens, temples, and an optical engine module. A groove is provided at each end of the frame, and two optical waveguide lenses are provided on the frame. The two temples are hinged to the ends of the frame, respectively, so that the temples can rotate. The temples have an open state when they are perpendicular to the frame, and can be worn on the user's head when in the open state. An optical engine module is provided at one end of each temple near the hinge point between the temple and the frame, and when the temple is in the open state, the optical engine module is located in the groove. When in use, the temples are opened, and the optical engine module is located in the groove. The light path can illuminate the portion of the optical waveguide lens located in the groove, and the user can see the image information of the optical waveguide lens. After the optical engine module is set on the temple, the optical engine module can rotate with the temple, realizing decoupling of the optical engine module and the frame, reducing the area and thickness of the frame, and the overall device is relatively light and thin, easy to fold and store.

[0024] 2. The AR display device provided by the present invention, the hinge assembly includes a reset mechanism arranged in the shell, the reset mechanism includes: an elastic member, a rotating member and a limiting portion formed on the top of the lower fixed member, the elastic member is sleeved on the shaft body, and one end abuts against the shell, and the other end abuts against the top surface of the rotating member, the rotating member is sleeved on the shaft body, and two limiting grooves are provided at its bottom end, and the limiting portion can be engaged with any limiting groove. Preferably, the limiting groove is an arc groove, the two arc grooves are perpendicular to each other, and the upper surface of the limiting portion is an arc surface, and the arc surface can be engaged with any arc groove. When the temples are in the open state (the temples are perpendicular to the frame) and the folded state (the temples are parallel to the frame), the limiting portion is engaged with the two limiting grooves respectively. When the angle between the temple and the frame is less than 45°, the limit portion fails to match the limit slot. At this time, the elastic member tends to drive the rotating member to rotate so that the limit slot on the temple engages with the limit portion, that is, there is a tendency to drive the temple into a folded state. Correspondingly, when the angle between the temple and the frame is 45°-90°, the elastic member also tends to drive the rotating member to rotate so that the limit slot on the temple engages with the limit portion, that is, there is a tendency to drive the temple into an open state. By providing a reset mechanism, the device can always be in the open state or folded state, making it easier for the user to wear or store.

[0025] 3. The AR display device provided by the present invention has a first magnetic member disposed on one end of the temple near the hinge point with the frame, and a second magnetic member disposed on each end of the frame. When the temple is in the open position, the first and second magnetic members are magnetically connected. The magnetic attraction of the first and second magnetic members ensures that the temple remains stable when the device is in operation, thereby ensuring stable output from the optical engine module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] FIG1 is a schematic diagram of an AR display device in Example 1 of the present invention, wherein the temples are in an open state;

[0028] FIG2 is a schematic diagram of the AR display device in Example 1 of the present invention, wherein the temples are in a folded state;

[0029] FIG3 is a schematic diagram of the AR display device in Example 1 of the present invention with the frame and temples hidden;

[0030] FIG4 is an exploded schematic diagram of the rotating shaft assembly in Example 1 of the AR display device of the present invention;

[0031] FIG5 is a cross-sectional view of the rotating shaft assembly in Example 1 of the AR display device of the present invention;

[0032] FIG6 is a cross-sectional view of the rotating shaft assembly of the AR display device in Example 1 of the present invention;

[0033] FIG7 is a schematic diagram of the temples of the AR display device in Example 2 of the present invention. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Example 1

[0039] As shown in FIG1 and FIG2 , this is a preferred embodiment of the AR display device of the present invention. This AR display device can decouple the optical engine and the frame, so that the area and thickness of the frame are smaller, and the device as a whole is relatively light and thin.

[0040] The above-mentioned AR display device includes: a frame 1, an optical waveguide lens 2, a temple 3 and an optical machine module 4. Grooves are provided at both ends of the frame 1. Two optical waveguide lenses 2 are arranged on the frame 1 at intervals. Specifically, two identical optical waveguide lenses 2 are symmetrically arranged along the center line of the frame 1, and the two optical waveguide lenses 2 can be stuck on the user's nose bridge. The two temples 3 are hinged to the two ends of the frame 1 respectively. Depending on the rotation angle of the temples 3, the temples 3 have an open state and a folded state. When the temples 3 are perpendicular to the frame 1, they are in an open state, and when the temples 3 are parallel to the frame 1, they are in a folded state. That is to say, the angle between the temples 3 and the frame 1 is in the range of 0° to 90°. Each temple 3 is equipped with an optical module 4 near its hinge point with the frame 1. When the temple 3 is open, the optical module 4 is located in the groove. At this time, the optical module 4 can transmit light to the portion of the optical waveguide lens 2 located in the groove, and the optical waveguide lens 2 realizes the corresponding optical function, and the user can finally see the image information. Fixing the optical module 4 to the temple 3 allows it to rotate with the temple 3, reducing the area and thickness of the frame 1, making the device lighter and thinner as a whole, and providing a better wearing experience for the user.

[0041] The temples 3 and the frame 1 are hingedly connected by a rotating shaft assembly 5. As shown in Figures 3 to 6, the rotating shaft assembly 5 includes: an axle 501 and a housing 502. The axle 501 is connected to the frame 1, and the housing 502 is sleeved on the axle 501 and can rotate around the axle 501. Specifically, the housing 502 includes a main body that is approximately rectangular and a top plate arranged on the top surface of the main body. The four side surfaces of the main body are all flat, and the intersection of two adjacent side surfaces is rounded, and the main body has a cavity. The shape of the top plate is similar to that of the main body, but the outer edge size of the top plate is larger than the outer edge size of the main body, and the top plate is provided with a hole for the axle 501 to pass through. The temples 3 are fixedly connected to the housing 502, and then when an external force is driven, the temples 3 can drive the housing 502 to rotate around the axle 501.

[0042] Furthermore, the rotating shaft assembly 5 further includes an upper fixing member 503 and a lower fixing member 504. Both the upper fixing member 503 and the lower fixing member 504 are sleeved on the shaft body 501. The upper fixing member 503 is located above the housing 502, and the top end of the shaft body 501 is engaged with the upper fixing member 503. The lower fixing member 504 is located below the housing 502, and the bottom end of the shaft body 501 is engaged with the lower fixing member 504. Specifically, the upper fixing member 503 and the lower fixing member 504 have the same shape as the main body of the housing 502, and are provided with slots at corresponding positions on the frame 1. The upper fixing member 503 and the lower fixing member 504 are arranged in the slots to achieve positional fixation. The top end of the shaft body 501 has a clamping portion 5011 protruding from the main body. Correspondingly, a clamping groove is provided on the upper fixing piece 503, and the clamping portion 5011 is clamped with the clamping groove. The bottom end of the shaft body 501 is provided with an annular groove 5012, and a clamping spring 505 is provided on the annular groove 5012. The clamping spring 505 is clamped with the lower fixing piece 504.

[0043] Furthermore, upper and lower stoppers 101 are provided at both ends of the frame 1. The top surface of the shaft 501 contacts the bottom surface of the upper stopper 101, and the bottom surface of the shaft 501 contacts the top surface of the lower stopper. In this embodiment, both the upper and lower stoppers 101 and 501 are semicircular plates. In other embodiments, the upper and lower stoppers 101 and 501 may alternatively be plates of other shapes, such as triangles, as long as they do not interfere with the rotation of the temples 3.

[0044] Furthermore, the rotating shaft assembly 5 also includes a reset mechanism disposed within the housing 502. The reset mechanism includes an elastic member 506, a rotating member 507, and a stopper 508 formed at the top of the lower fixed member 504. The elastic member 506 is preferably a spring, which is sleeved on the shaft body 501, with one end abutting the housing 502 and the other end abutting the top surface of the rotating member 507. The rotating member 507 is sleeved on the shaft body 501, and its bottom end is provided with two stopper grooves, and the stopper 508 can engage with either stopper groove. Specifically, in some embodiments, the stopper grooves are preferably arcuate grooves, and the two arcuate grooves are perpendicular to each other. The upper surface of the stopper is an arcuate surface, and the arcuate surface can engage with either arcuate groove. When the arcuate surface is engaged in two different arcuate grooves, the temple 3 is respectively in the open state and the folded state. When the angle between the temple 3 and the frame 1 is between 0° and 45°, the arc surface fails to completely match the limiting groove. Under the action of the elastic member 506, there is a tendency for the rotating member 507 to rotate until the arc surface completely matches the limiting groove, that is, there is a tendency for the temple 3 to be in a folded state; and when the angle between the temple 3 and the frame 1 is between 45° and 90°, at this time, the arc surface also fails to completely match the limiting groove. Under the action of the elastic member 506, there is a tendency for the rotating member 507 to rotate until the arc surface completely matches the limiting groove, that is, there is a tendency for the temple 3 to be in an open state.

[0045] In other embodiments, the limiting portion 508 may also be in other shapes such as a triangle, and the shape of the limiting groove on the corresponding rotating member 507 should be adapted thereto.

[0046] In other embodiments, the angle of the limit groove may be 60°, 120° or other angles. When the temple 3 is in the open state, the limit portion may not completely match the limit groove, as long as there is a tendency to rotate the temple 3 outward.

[0047] The working process of the AR display device provided in some embodiments is described below:

[0048] Open the two temples 3 so that they are perpendicular to the frame 1 and then wear them on the user's head. At this point, the optical module 4 is located in the groove of the frame 1, facing the optical waveguide lens 2. The light path of the optical module 4 is transmitted through the optical waveguide lens 2, and the image is finally displayed in front of the user.

[0049] Example 2

[0050] As shown in FIG7 , this embodiment differs from Example 1 in that the shaft assembly 5 does not include a reset mechanism. Instead, a first magnetic member 6 is provided on the temple 3, and a second magnetic member 7 is provided on the frame 1. Furthermore, the shaft 501 is preferably a damping shaft, meaning that the temple 3 can be rotated to any angle and maintained. The remaining structure is the same as that of the AR display device described in Example 1 and will not be further described.

[0051] Specifically, a first magnetic part 6 is provided at one end of the temple 3 near the hinge point between the temple 3 and the frame 1, and a second magnetic part 7 is provided at both ends of the frame 1. When the temple 3 is in the open state, the first magnetic part 6 and the second magnetic part 7 are magnetically connected. The first magnetic part 6 and the second magnetic part 7 can keep the temple 3 stably in the open state, thereby ensuring that the optical machine module 4 can work stably.

[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other variations or modifications can be made based on the above description.

Claims

1. An AR display device, wherein: include: A mirror frame (1), wherein both ends of the mirror frame (1) are provided with grooves; An optical waveguide lens (2), wherein two optical waveguide lenses (2) are arranged on the lens frame (1) at intervals; Temples (3), the two temples (3) being hinged to the two ends of the frame (1) respectively, and the temples (3) being in an open state when they are perpendicular to the frame (1); as well as An optical-mechanical module (4) is provided at one end of each of the temples (3) close to a hinge point between the temple and the frame (1), and when the temples (3) are in the open state, the optical-mechanical module (4) is located in the groove.

2. The AR display device according to claim 1, wherein: The temples (3) and the frame (1) are hingedly connected via a rotating shaft assembly (5).

3. The AR display device according to claim 2, wherein: The rotating shaft assembly (5) comprises: an axis body (501) and a shell (502); the axis body (501) is connected to the mirror frame (1); the shell (502) is sleeved on the axis body (501) and the shell (502) can rotate around the axis body (501); and the temple (3) is fixedly connected to the shell (502).

4. The AR display device according to claim 3, wherein: The rotating shaft assembly (5) further comprises: an upper fixing member (503) and a lower fixing member (504), wherein the upper fixing member (503) and the lower fixing member (504) are both sleeved on the shaft body (501), the upper fixing member (503) is located above the shell (502), and the top end of the shaft body (501) is snap-fitted to the upper fixing member (503), and the lower fixing member (504) is located below the shell (502), and the bottom end of the shaft body (501) is snap-fitted to the lower fixing member (504).

5. The AR display device according to claim 4, wherein: The top end of the shaft body (501) has a clamping portion (5011) protruding from the main body, and a clamping slot is provided on the upper fixing member (503), and the clamping portion (5011) is clamped with the clamping slot.

6. The AR display device according to claim 4, wherein: The bottom end of the shaft body (501) is provided with an annular groove (5012), and a retaining spring (505) is provided on the annular groove (5012), and the retaining spring (505) is connected to the lower fixing member (504).

7. The AR display device according to claim 4, wherein: An upper limit piece (101) and a lower limit piece are provided at both ends of the mirror frame (1); the top surface of the shaft body (501) contacts the bottom surface of the upper limit piece (101), and the bottom surface of the shaft body (501) contacts the top surface of the lower limit piece.

8. The AR display device according to any one of claims 4 to 7, wherein: The rotating shaft assembly (5) also includes a reset mechanism arranged in the shell (502), and the reset mechanism includes: an elastic member (506), a rotating member (507) and a limiting portion (508) formed on the top of the lower fixing member (504); the elastic member (506) is sleeved on the shaft body (501), and one end of the elastic member abuts against the shell (502), and the other end abuts against the top surface of the rotating member (507); the rotating member (507) is sleeved on the shaft body (501), and two limiting grooves are arranged at the bottom end thereof, and the limiting portion (508) can be engaged with any of the limiting grooves.

9. The AR display device according to claim 8, wherein: The limiting groove is an arc-shaped groove, and the two arc-shaped grooves are perpendicular to each other. The upper surface of the limiting portion (508) is an arc surface, and the arc surface can be engaged with any of the arc-shaped grooves.

10. The AR display device according to claim 1, wherein: A first magnetic component (6) is provided at one end of the temple (3) close to the hinge point between the temple and the frame (1), and second magnetic components (7) are provided at both ends of the frame (1); when the temple (3) is in the open state, the first magnetic component (6) and the second magnetic component (7) are connected by magnetic attraction.

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