Display screen positioning tool for AR (Augmented Reality)

Abstract

The utility model belongs to the field of AR (Augmented Reality) glasses production, and discloses a display screen positioning tool for AR, which can be used for conveniently and quickly positioning a micro display screen to a proper depth position of a display screen accommodating recess so as to greatly improve the assembly efficiency of batch assembly of AR waveguide lenses, and comprises a lens positioning unit, a monitoring unit and a lifting adjusting unit, the lens positioning unit is provided with a placement position, a lens body is arranged at the placement position, so that the AR waveguide lens forms a positioning lens, the opening part of a display screen accommodating concave position of the positioning lens is vertically upward, the monitoring unit is provided with a monitoring camera, the monitoring camera is located above the placement position, and the optical axis of the monitoring camera is perpendicular to the lens body of the positioning lens. The lifting adjusting unit is provided with a lifting base and a clamping module, the clamping module is movably arranged on the lifting base in the vertical direction, the clamping module is provided with a plugging socket, the plugging socket is located over the display screen containing concave position, and the micro display screen is horizontally plugged into the plugging socket.

Description

Technical Field

[0001] The utility model belongs to the field of AR glasses production, and specifically relates to a display screen positioning tool for AR. Background Art

[0002] The AR waveguide lens includes a lens body and a display module that are mechanically connected and optically coupled. The display module has a display screen accommodating recess. During the assembly process of the AR waveguide lens, the micro display screen needs to be embedded in the display screen accommodating recess. The embedded micro display screen is optically coupled between the lens body and the display module to project the display content of the micro display screen onto the lens body, thereby achieving an AR effect.

[0003] However, in the process of embedding the micro display screen into the display screen accommodating recess, the embedding depth of the micro display screen in the display screen accommodating recess determines the focus of the image projected by the micro display screen on the lens body. That is, if the micro display screen cannot be embedded at an appropriate depth in the display screen accommodating recess, the micro display screen will no longer be able to form a correct projection image focus on the lens body, so that when the finished product is used, the wearer cannot clearly see the projected image of the micro display screen. In addition, due to processing tolerances, the display screen accommodating recess and the micro display screen often cannot be precisely matched, and a rotational offset occurs, so that when the finished product is used, when the wearer observes through a pair of AR waveguide lenses, the binocular vision cannot be well integrated, that is, ghosting occurs.

[0004] The above problems are particularly prominent when assembling AR waveguide lenses in batches, seriously affecting the assembly efficiency. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a display screen positioning tool for AR, which can conveniently and quickly position the micro display screen to an appropriate depth position of the display screen accommodating recess, thereby greatly improving the assembly efficiency of batch assembly of AR waveguide lenses.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A display screen positioning tool for AR is used to position a micro display screen on an AR waveguide lens. The AR waveguide lens includes a lens body and a display module that are optically coupled and fixed in relative position. A display screen accommodating recess is formed on the display module. The display screen accommodating recess is used to set the micro display screen, and the display screen accommodating recess is rectangular and recessed. It is characterized in that it includes: a lens positioning unit, which has a placement position, and the lens body is set at the placement position, so that the AR waveguide lens forms a positioning lens, and the mouth of the display screen accommodating recess of the positioning lens is vertically facing upward; a monitoring unit, which has a monitoring camera, which is located above the placement position, and the optical axis of the monitoring camera is perpendicular to the lens body of the positioning lens; a lifting and adjusting unit, which has a lifting base and a clamping module, and the clamping module is movably arranged on the lifting base in a vertical direction, and the clamping module has a plug socket, and the plug socket is located directly above the display screen accommodating recess, and the micro display screen is horizontally plugged into the plug socket.

[0008] Preferably, the clamping module has a module support and a rotary indexing platform, the rotary indexing platform is horizontally rotatably arranged on the module support, and the rotary indexing platform has a connector socket.

[0009] Furthermore, the clamping module also includes a screw micrometer, the measuring direction of the screw micrometer is horizontal, the circumferential surface of the rotary dividing platform has a fine-tuning rod extending radially outward, and the fine-tuning rod is in contact with the movable measuring surface of the screw micrometer.

[0010] Preferably, the surface of the lifting base has a lifting cam extending vertically, and the clamping module also includes a sliding base, a height adjusting screw and a tightening rod. The surface of the sliding base is formed with a guide shoe portion that cooperates with the lifting cam. The height adjusting screw and the tightening rod are passed through the sliding base. The height adjusting screw and the tightening rod both extend in the horizontal direction, and the height adjusting screw is rotatable relative to the lifting cam, and the tightening rod is horizontally movable relative to the lifting cam. The top surface of the lifting cam is formed with a rail top rack extending vertically, and the end of the height adjusting screw has a gear ring portion that meshes with the rail top rack, so that the gear ring portion and the rail top rack form a gear rack transmission mechanism. When the head of the tightening rod presses against the side of the lifting cam, the sliding base is stationary relative to the lifting cam.

[0011] Preferably, the placement position has a placement plane and a pair of positioning clamps, the lower end of the placement plane protrudes to form a horizontally extending limiting ridge, the pair of positioning clamps are parallel to each other, and the spacing between them matches the width of the lens body of the positioning lens, so that the lens body of the positioning lens is inserted between the pair of positioning clamps and fits on the placement plane, and the lower edge of the lens body of the positioning lens is blocked by the limiting ridge.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Because the AR display screen positioning tool of the utility model includes a lens positioning unit, a monitoring unit and a lifting and adjusting unit, the lens positioning unit has a placement position, the lens body is arranged at the placement position, so that the AR waveguide lens forms a positioning lens, and the mouth of the display screen accommodating recess of the positioning lens is vertically facing upward, the monitoring unit has a monitoring camera, the monitoring camera is located above the placement position, and the optical axis of the monitoring camera is perpendicular to the lens body of the positioning lens, the lifting and adjusting unit has a lifting base and a clamping module, the clamping module is movably arranged on the lifting base in the vertical direction, the clamping module has a plug socket, the plug socket is located just above the display screen accommodating recess, and the micro display screen is horizontally plugged in On the connector socket, when the micro display screen is embedded into the display screen accommodating recess, the depth position of the micro display screen in the display screen accommodating recess is changed by lifting and lowering the clamping module, and the clarity of the projection of the micro display screen on the lens body is observed by the monitoring camera, that is, whether the projection focus is correct on the lens body. When the clarity of the projection of the micro display screen on the lens body reaches a predetermined standard, the micro display screen is fixed inside the display screen accommodating recess by dispensing glue, thereby realizing the embedding of the micro display screen. Therefore, the utility model can quickly and conveniently position the micro display screen to the appropriate depth position of the display screen accommodating recess, thereby greatly improving the assembly efficiency of batch assembly of AR waveguide lenses.

[0014] 2. Because the clamping module of the utility model also includes a screw micrometer, the measuring direction of the screw micrometer is horizontal, the circumferential surface of the rotary indexing platform has a fine-tuning rod extending radially outward, and the fine-tuning rod is in contact with the active measuring surface of the screw micrometer, that is, the active measuring surface of the screw micrometer moves along the rotation tangent straight line of the rotary indexing platform, so that the active measuring surface can deflect and adjust the rotary indexing platform within a predetermined smaller arc range. Therefore, the utility model can achieve a more precise fit by adjusting the fit between the micro display screen and the display screen accommodating recess by rotation, thereby avoiding the phenomenon that binocular vision of a pair of AR waveguide lenses cannot be well integrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of an AR display screen positioning tooling according to an embodiment of the utility model;

[0016] Figure 2 This is a diagram showing the coordination of a lifting base, a height adjustment screw rod and a tightening rod according to an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the cooperation between the rotary indexing platform and the display module according to an embodiment of the utility model;

[0018] Figure 4 An exploded view of a fixing plate, a micro display screen and a waveguide lens according to an embodiment of the utility model;

[0019] Figure 5 A diagram showing the coordination of a screw micrometer and a fine-tuning rod according to an embodiment of the present utility model;

[0020] Figure 6 A schematic diagram of verifying "binocular vision fusion" by a remote monitor according to an embodiment of the utility model;

[0021] Figure 7 This is a dispensing assembly diagram of a micro display screen and a waveguide lens according to an embodiment of the utility model.

[0022] In the figure: 100, AR display screen positioning tooling, G1, AR waveguide lens, G11, lens body, G12, display module, G121, display screen accommodating recess, M, micro display screen, 10, lens positioning unit, 11, placement position, 111, placement plane, 111a, limiting convex ridge, 112, positioning card plate, 20, monitoring unit, 21, monitoring camera, 30, lifting adjustment unit, 31, lifting base, 311, lifting convex rail, 32, clamping module, 321, sliding base, 321a, guide shoe part, 322, height adjustment screw, 322a, gear ring part, 323, tightening rod, 324, module bracket, 325, rotary indexing platform, 3251, fine-tuning rod part, 326, fixing plate, 327, screw micrometer. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments and drawings specifically illustrate the AR display screen positioning tooling of the present invention. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0024] like Figure 1 As shown, the AR display screen positioning tool 100 in this embodiment is used to position the micro display screen M on the AR waveguide lens G1. The AR waveguide lens G1 includes a lens body G11 and a display module G12 that are optically coupled and fixed in relative position. A display screen accommodating recess G121 is formed on the display module G12. The display screen accommodating recess G121 is used to set the micro display screen M, and the display screen accommodating recess G121 is recessed in a rectangular shape. Specifically, the lens body G11 and the display module G12 are mechanically connected, and an obtuse angle is formed between the directions of the lens body G11 and the display screen accommodating recess G121. The depth of the display screen accommodating recess G121 is greater than the thickness of the micro display screen M, so that the assembly depth of the micro display screen M in the display screen accommodating recess G121 can be adjusted.

[0025] The AR display screen positioning tool 100 includes a lens positioning unit 10 , a monitoring unit 20 and a lifting and lowering adjustment unit 30 .

[0026] The lens positioning unit 10 has a placement position 11, and the lens body G11 is set at the placement position 11, so that the AR waveguide lens G1 is positioned by the placement position 11 to form a positioning lens with a predetermined posture, and the mouth of the display screen accommodating recess G121 of the positioning lens is vertically facing upward.

[0027] The placement position 11 has a placement plane 111 and a pair of positioning clamping plates 112 .

[0028] The lower end of the placement plane 111 is protruded to form a horizontally extending limiting ridge 111a, and a pair of positioning clamps 112 are parallel to each other, and the spacing between them matches the width of the lens body G11 of the positioning lens, so that the lens body G11 of the positioning lens is inserted between the pair of positioning clamps 112, and the lens body G11 of the positioning lens is attached to the placement plane 111, and the lower edge of the lens body G11 of the positioning lens is blocked by the limiting ridge 111a. Specifically, the placement plane 111 is an inclined plane, and the pair of positioning clamps 112 are bent to form folded edges that are parallel to the placement plane 111 and extend toward each other, thereby blocking the lens body G11 of the positioning lens. In this embodiment, the display module G12 is located on the outside of the placement plane 111.

[0029] The monitoring unit 20 has a monitoring camera 21, which is located above the placement plane 111 of the placement position 11, and the optical axis of the monitoring camera 21 is perpendicular to the lens body G11 of the positioning lens. Specifically, the monitoring camera 21 is connected to a remote monitor signal (not shown in the accompanying drawings). When the lens body G11 displays an image, the operator can observe the image through the remote monitor.

[0030] The lifting and adjusting unit 30 comprises a lifting base 31 and a clamping module 32 .

[0031] The surface of the lifting base 31 has a lifting convex rail 311 extending vertically, and the top surface of the lifting convex rail 311 is formed with a rail top rack extending vertically (not shown in the drawings for simplifying the illustration).

[0032] The clamping module 32 is movably disposed on the lifting base 31 along the vertical direction. The clamping module 32 has a sliding base 321 , a height adjustment screw rod 322 , a tightening rod 323 , a module bracket 324 , a rotary indexing platform 325 and a screw micrometer 327 .

[0033] A guide shoe portion 321 a that cooperates with the lifting convex rail 311 is formed on the surface of the sliding base 321 .

[0034] like Figure 2As shown, the height adjustment screw 322 and the tightening rod 323 are penetrated on the sliding base 321, and the height adjustment screw 322 and the tightening rod 323 both extend into the guide shoe portion 321a in the horizontal direction. In this embodiment, the height adjustment screw 322 and the tightening rod 323 are respectively penetrated from the opposite side surfaces of the sliding base 321.

[0035] The end of the height-adjusting screw 322 located in the guide shoe portion 321a has a gear ring portion 322a that meshes with the rail top rack, so that the gear ring portion 322a and the rail top rack form a gear rack transmission mechanism, and the height-adjusting screw 322 is rotatable relative to the lifting cam rail 311. In this embodiment, the end of the height-adjusting screw 322 located in the guide shoe portion 321a has a knurled flange, and the operator rotates the flange to move the sliding base 321 in the vertical direction relative to the lifting base 31.

[0036] The pressing rod 323 is horizontally movable relative to the lifting rail 311 , so that when the head of the pressing rod 323 located in the guide shoe portion 321 a presses against the side of the lifting rail 311 , the sliding base 321 is stationary relative to the lifting rail 311 .

[0037] In this embodiment, the structure formed by the sliding base 321, the height adjustment screw 322 and the tightening rod 323 is a product available on the market, and the product name is: Z-axis displacement platform LWZ40-L150 long-stroke dovetail groove vertical lifting manual precision fine-tuning slide.

[0038] like Figure 3 and Figure 4 As shown, the rotary indexing platform 325 can be horizontally rotatably arranged on the module bracket 324, the module bracket 324 is fixed on the movable base 321, and the rotary indexing platform 325 has a connector socket (not shown in the drawings). In this embodiment, the clamping module 32 also has a fixed plate 326, and a display driver circuit board (not shown in the drawings) is arranged on the fixed plate 326, and the connector plug is located on the display driver circuit board.

[0039] The connector socket is located directly above the display screen accommodating recess G121, and the micro display screen M is horizontally plugged into the connector socket. In this embodiment, the micro display screen M is connected to the external display chip signal through the display driver circuit board, so that a "cross" symbol as a calibration mark is displayed on the micro display screen M.

[0040] like Figure 5As shown, the measuring direction of the screw micrometer 327 is horizontal, the circumferential surface of the rotating indexing platform 325 has a fine-tuning rod 3251 extending radially outward, and the fine-tuning rod 351 abuts against the movable measuring surface of the screw micrometer 327. Specifically, the main body of the screw micrometer 327 is fixed on the module bracket 324, and the fine-tuning rod 3251 is threadedly connected to the circumferential surface of the rotating indexing platform 325. In this embodiment, the structure formed by the rotating indexing platform 325, the fine-tuning rod 3251 and the screw micrometer 327 is a product available on the market, and the product name is: R-axis rotating platform RSP40-L1000 manual angle indexing plate precision fine-tuning moving slide.

[0041] The positioning process of the AR display screen positioning tool 100 is described below through an embodiment:

[0042] The AR waveguide lens G1 is positioned on the placement plane 111, and the micro display screen M to be installed is set on the rotating indexing platform 325 through the fixing plate 326, and the clamping module 32 is adjusted so that the micro display screen M enters the depth position in the display screen accommodating recess G121. At the same time, the projection clarity of the micro display screen M on the lens body G11, that is, the clarity of the "cross" symbol, is observed on the remote monitor through the monitoring camera 21 to determine whether the depth position of the micro display screen M in the display screen accommodating recess G121 is appropriate.

[0043] like Figure 6 and Figure 7 As shown, the remote monitor itself displays a "+" symbol for verifying whether "binocular vision fusion" is achieved. When the clarity of the "+" symbol received by the monitoring camera 21 reaches the predetermined requirement, the fine-tuning rod 3251 is removed, and the rotary indexing platform 325 is manually rotated. When the "+" on the lens body G11 observed by the monitoring camera 21 is nearly parallel to the "+" displayed on the remote monitor (horizontally and horizontally, vertically and vertically), the fine-tuning rod 3251 is installed on the circumferential surface of the rotary indexing platform 325, and the rotary indexing platform 325 is slightly rotated by the screw micrometer 327 until the "+" on the lens body G11 observed by the monitoring camera 21 is parallel to the "+" displayed on the remote monitor. At this time, the micro display screen M is fixed inside the display screen accommodating recess G121 by dispensing glue.

[0044] The above-mentioned implementation modes are preferred cases of the present utility model and are not used to limit the protection scope of the present utility model. Various deformations or modifications that can be made by ordinary technicians in this field without creative work within the scope of the attached claims are still within the protection scope of this patent.

Claims

1. An AR display screen positioning tool, used for positioning a micro display screen on an AR waveguide lens, the AR waveguide lens comprises a lens body and a display module that are optically coupled and fixed in relative position, the display module is formed with a display screen accommodating recess, the display screen accommodating recess is used to set the micro display screen, and the display screen accommodating recess is a rectangular body recessed, characterized in that: include: The lens positioning unit has a placement position, the lens body is arranged at the placement position, so that the AR waveguide lens forms a positioning lens, and the mouth of the display screen accommodating recess of the positioning lens faces vertically upwards, A monitoring unit has a monitoring camera, the monitoring camera is located above the placement position, and the optical axis of the monitoring camera is perpendicular to the lens body of the positioning lens, The lifting and adjusting unit comprises a lifting base and a clamping module, wherein the clamping module is movably arranged on the lifting base in a vertical direction, the clamping module comprises a plug socket, the plug socket is located directly above the display screen accommodating recess, and the micro display screen is horizontally plugged into the plug socket.

2. The AR display screen positioning tool according to claim 1, characterized in that: in, The clamping module comprises a module support and a rotary indexing platform. The rotary indexing platform is horizontally rotatably arranged on the module support, and the rotary indexing platform comprises the connector socket.

3. The AR display screen positioning tool according to claim 2, characterized in that: in, The clamping module also includes a screw micrometer, the measuring direction of which is horizontal. The peripheral surface of the rotary indexing platform is provided with a fine-tuning rod portion extending radially outward, and the fine-tuning rod portion abuts against the movable measuring surface of the screw micrometer.

4. The AR display screen positioning tool according to claim 1, characterized in that: in, The surface of the lifting base has a lifting convex rail extending vertically, and the clamping module also includes a sliding base, a height adjustment screw rod and a tightening rod. The surface of the sliding base is formed with a guide shoe portion that cooperates with the lifting convex rail, the height adjustment screw and the tightening rod are inserted into the sliding base, the height adjustment screw and the tightening rod both extend in the horizontal direction, and the height adjustment screw is rotatable relative to the lifting convex rail, and the tightening rod is horizontally movable relative to the lifting convex rail. The top surface of the lifting convex rail is formed with a rail top rack extending vertically, and the end of the height adjustment screw has a gear ring part meshing with the rail top rack, so that the gear ring part and the rail top rack form a gear rack transmission mechanism. When the head of the pressing rod presses against the side surface of the lifting convex rail, the sliding base is stationary relative to the lifting convex rail.

5. The AR display screen positioning tool according to claim 1, characterized in that: in, The placement position has a placement plane and a pair of positioning clamps. The lower end of the placement plane is protruded with a horizontally extending limiting ridge, and the pair of positioning clamps are parallel to each other, and the spacing between them matches the width of the lens body of the positioning lens, so that the lens body of the positioning lens is inserted between the pair of positioning clamps and fits on the placement plane, and the lower edge of the lens body of the positioning lens is blocked by the limiting ridge.

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