AA module and AA equipment

Abstract

The utility model provides an AA module, which is characterized in that an optical machine clamping tool and a second six-axis coupling table are arranged on a displacement table of a first six-axis coupling table together through a first mounting platform, a display screen connecting tool is fixedly arranged on a displacement table of the second six-axis coupling table, and the optical machine clamping tool and the display screen connecting tool are coaxially and oppositely arranged. And a detachably connected positioning platform is arranged in the optical machine clamping tool. According to the AA module provided by the utility model, by adjusting the first six-axis coupling table and the second six-axis coupling table, two-by-two shaft alignment among a near-eye display ray machine model machine, a display screen and a test module can be realized, the shaft alignment operation among the two-by-two shaft alignment operation is free from interference, the operation is flexible, and by replacing a positioning platform in a ray machine clamping tool, the production efficiency is improved, and the production cost is reduced. Different near-to-eye display ray machine prototypes are simply fixed, the specific model of the near-to-eye display ray machine prototype does not need to be limited, the research and development period of the near-to-eye display ray machine can be effectively shortened, and the research and development efficiency of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical equipment assembly, and particularly relates to an AA module and an AA device. Background Art

[0002] At present, near-eye display (NED) technology is a glass or goggle-type wearable display device (near-eye display optical engine), which consists of a micro display panel and imaging optics (including lenses). Specifically, it can be used in augmented reality (AR) devices. Since the AR device is close to the human eye, to ensure the clarity of the image observed by the human eye, the display screen and the lens of the near-eye display optical engine need to ensure the optical axis alignment and focusing. Therefore, in the prior art, the display screen and the lens in the near-eye display optical engine (the imaging optics such as the lens are generally pre-installed and fixed on the near-eye display optical engine body) need to be assembled by an AA (Active Alignment) device to ensure the accuracy of optical axis alignment and focusing and ensure the display effect.

[0003] However, in the prior art, AA devices are mainly used in product assembly production. The near-eye display optical engine and the display screen to be assembled both have fixed forms. Correspondingly, the forms of the clamping tools used for the near-eye display optical engine and the display screen are also fixed, so as to ensure the consistency of assembly operations, realize highly automated production, and ensure production efficiency. As a result, the fixed fixtures of the AA device in the prior art for fixing the components to be assembled have low compatibility with components to be assembled of different forms. The execution of its AA process will, conversely, require the near-eye display optical engine body to have a specific fixed form, which makes it necessary to add a fixed form program for the near-eye display optical engine prototype in the research and development of the near-eye display optical engine in the prior art, resulting in an extended research and development cycle and increased research and development costs. Moreover, the price of existing fully automated AA devices is high, which is not conducive to the control of research and development costs. Summary of the Utility Model

[0004] Based on this, the purpose of the present utility model is to provide an AA module and an AA device to solve the problem that the AA device in the prior art requires the near-eye display optical engine prototype to have a fixed form in AA verification, which will increase the research and development costs of the near-eye display optical engine and is not conducive to product research and development.

[0005] On the one hand, the present utility model provides an AA module, which includes: a first mounting platform, a first six-axis coupling table, and a second six-axis coupling table, wherein,

[0006] The first mounting platform is fixedly connected to the displacement table of the first six-axis coupling table, and the second six-axis coupling table is fixedly arranged on the first mounting platform;

[0007] A light engine clamping tooling may also be provided on the first mounting platform. A display connection tooling is fixedly provided on the displacement table of the second six-axis coupling table. The light engine clamping tooling and the display connection tooling are coaxially aligned.

[0008] The light engine clamping tooling includes: a column fixedly provided on the first mounting platform, a counterweight block vertically slidably connected to the column, a clamping member fixedly connected to the counterweight block, and a positioning platform detachably provided at the top of the column. The clamping member is in an inverted L shape to form a light engine clamping space between the top plate of the clamping member and the positioning platform.

[0009] Optionally, the display connection tooling includes a connection block, a manipulator, and a universal joint connecting the connection block and the manipulator. The connection block is fixedly connected to the displacement table of the second six-axis coupling table.

[0010] Optionally, the manipulator includes at least one of a clamping jaw and a suction cup.

[0011] Optionally, the display connection tooling further includes a back cover adhesively fixed to the display, so that the manipulator can pick up the display through the back cover.

[0012] Optionally, the manipulator includes a clamping jaw, and a coordination groove matching the clamping jaw is further provided on the back cover.

[0013] Optionally, the connection block is slidably and fixedly connected to the displacement table of the second six-axis coupling table, and the sliding direction is pointed to the setting of the light engine clamping tooling.

[0014] Optionally, the light engine clamping tooling further includes: a contact column provided in the clamping member. The contact column is vertically provided in the top plate of the clamping member, and the bottom end of the contact column is a silica gel structure.

[0015] Optionally, the light engine clamping tooling further includes a positioning pin. A pin hole inserted and matched with the positioning pin is further provided on the side of the column. A positioning pin mounting hole is further provided on the side wall of the counterweight block. The positioning pin is elastically provided on the counterweight block through the positioning pin mounting hole.

[0016] Optionally, a plurality of pin holes are spaced along the height direction of the column.

[0017] The present utility model also provides an AA device, including the above AA module and a test module. The test module is coaxially aligned with the light engine clamping tooling and the display connection tooling.

[0018] The AA module provided by the present utility model sets the optical engine clamping tooling and the second six-axis coupling table on the displacement table of the first six-axis coupling table through the first installation platform. A display screen connection tooling is fixedly arranged on the displacement table of the second six-axis coupling table. The optical engine clamping tooling and the display screen connection tooling are coaxially aligned. During AA, the near-eye display optical engine prototype can be pre-clamped to the corresponding optical engine clamping tooling, and then fixed to the first installation platform by the optical engine clamping tooling. Then, the first six-axis coupling table and the second six-axis coupling table are adjusted respectively to achieve the alignment of the near-eye display optical engine prototype with the external test module and the alignment of the near-eye display optical engine prototype with the display screen. The external test module is used to inspect the alignment and focusing states of the near-eye display optical engine prototype and the display screen. Among them, when adjusting the first six-axis coupling table, the second six-axis coupling table and the near-eye display optical engine prototype remain relatively stationary, which can maintain the alignment state of the near-eye display optical engine prototype and the display screen, avoid interference between different alignment operations, and improve the operation flexibility; by replacing the positioning platform in the optical engine clamping tooling, near-eye display optical engine prototypes of different sizes can be adapted, without restricting the version of the near-eye display optical engine prototype, which can effectively shorten the R & D cycle of the near-eye display optical engine and improve the product R & D efficiency. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the main structure of the AA module in the present utility model;

[0020] Figure 2 It is a schematic diagram of a partial structure of the AA module in the present utility model;

[0021] Figure 3 It is a schematic diagram of the AA assembly principle of the AA device in the present utility model.

[0022] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific Embodiments

[0023] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] To solve the problem that in the prior art, AA devices require a fixed form factor for the near-eye display optical machine (in this application, the near-eye display optical machine mainly refers to the near-eye display optical machine body with optical devices such as lenses without special instructions) prototype in AA verification, which increases the R & D cost of the near-eye display optical machine and is not conducive to product R & D. This utility model provides an AA module, which sets the optical machine clamping tooling and the second six-axis coupling table on the displacement table of the first six-axis coupling table through the first installation platform. A display screen connection tooling is fixedly arranged on the displacement table of the second six-axis coupling table. The optical machine clamping tooling and the display screen connection tooling are coaxially aligned. The optical machine clamping tooling is detachably connected to the first installation platform. By adjusting the first six-axis coupling table and the second six-axis coupling table, pairwise alignment between the near-eye display optical machine prototype, the display screen, and the test module can be achieved, and the pairwise alignment operations do not interfere with each other, and the operation is flexible. A detachable positioning platform is arranged in the optical machine clamping tooling, and different near-eye display optical machine prototypes can be matched by replacing the positioning platform, realizing effective fixation of the near-eye display optical machine prototype. There is no need to limit the specific form factor of the near-eye display optical machine prototype, which can effectively shorten the R & D cycle of the near-eye display optical machine and improve the product R & D efficiency.

[0027] Specifically, as Figure 1 and Figure 2 shown, the main structure of the AA module in this embodiment is shown, which includes: a first installation platform 10, a first six-axis coupling table 20, and a second six-axis coupling table 30. Among them, the first six-axis coupling table 20 is of a base structure, and its displacement table is horizontally arranged at the top. The first installation platform 10 is fixedly connected to the displacement table of the first six-axis coupling table 20. The second six-axis coupling table 30 is fixedly arranged on the first installation platform 10. An optical machine clamping tooling 40 may also be arranged on the first installation platform 10. A display screen connection tooling 50 is fixedly arranged on the displacement table of the second six-axis coupling table 30. The optical machine clamping tooling 40 and the display screen connection tooling 50 are coaxially aligned. The optical machine clamping tooling 40 is used to clamp the near-eye display optical machine 01, and the display screen connection tooling 50 is used to grab the display screen and adjust the relative position between the display screen and the near-eye display optical machine 01 under the drive of the second six-axis coupling table 30. After AA, dotting and fixing can achieve the assembly of the display screen and the near-eye display optical machine 01.

[0028] The optical engine clamping tooling includes: a column 41 fixedly arranged on a first mounting platform, a counterweight 42 vertically slidably connected to the column 41, a clamping member 43 fixedly connected to the counterweight 42, a positioning platform 44 detachably arranged at the top of the column 42. The clamping member 43 is in an inverted L shape, so as to form an optical engine clamping space between the top plate of the clamping member 43 and the positioning platform 44. Lift the counterweight 42 and the clamping member 43, and the optical engine clamping space can be released, so that the near-eye display optical engine 01 can be placed on the positioning platform 44. Relax the counterweight 42 and the clamping member 43, and under the action of gravity, the clamping member 43 can be driven to press and fix the near-eye display optical engine 01 tightly in the optical engine clamping space. Since the size and weight of the near-eye display optical engine 01 and the display screen are both small, and based on the AA process requirements, the collision risk between them is also small. The clamping reliability of the near-eye display optical engine 01 can be effectively ensured through the gravity action of the counterweight 42 and the clamping member 43. The specific counterweight can be specifically selected according to the actual situation, and the present application does not make special limitations on this.

[0029] Among them, the positioning platform 44 can be detachably fixed to the column 41 by screws. For different near-eye display optical engine prototypes, different positioning platforms can be replaced, so as to simply and effectively meet the AA process verification requirements of various sizes of near-eye display optical engine prototypes, and provide convenience for the research and development of near-eye display optical engines.

[0030] In order to reduce the damage of clamping to the near-eye display optical engine, in this embodiment, the optical engine clamping tooling further includes a contact column arranged in the clamping member 43. The contact column is vertically arranged in the top plate of the clamping member 43, and the bottom end of the contact column is a silica gel structure. The main body of the contact column is a rigid hard material such as a metal material. When the clamping member 43 presses down, the near-eye display optical engine 01 is flexibly pressed through the silica gel structure at the bottom end of the contact column, which can avoid rigid damage to the near-eye display optical engine 01, and at the same time, the soft characteristics of the silica gel structure can be used to fit the surfaces of different near-eye display optical engines 01, improving the clamping compatibility with different near-eye display optical engines while ensuring the clamping and fixing reliability.

[0031] Specifically, the contact column can be assembled with the clamping member 43 through a mounting plate 45. The mounting plate 45 is provided with mounting holes, and the silica gel structure at the bottom end of the contact column is led out through the mounting holes. The mounting plate 45 is then attached and screwed to the lower surface of the top plate of the clamping member 43, and the top end of the contact column is limited by the top plate of the clamping member 43, so as to stably assemble the contact column with the clamping member 43. Different mounting plates 45 and contact columns can be selected for different near-eye display optical engines, which can further improve the clamping compatibility with different near-eye display optical engines and provide convenience for the research and development of near-eye display optical engines.

[0032] For the convenience of clamping operation, in this embodiment, a pin hole 411 that is inserted and matched with a positioning pin 401 (the overall structure is T-shaped for manual pulling) is further provided on the side of the column 41. A positioning pin mounting hole is also provided on the side wall of the counterweight 42. The positioning pin 401 is elastically arranged on the counterweight 42 through the positioning pin mounting hole. When it is necessary to pick up and place the near-eye display optical machine, the counterweight 42 and the clamping member 43 are lifted. As the counterweight 42 moves upward, until the positioning pin 401 is aligned with the pin hole 411, under the elastic action, the positioning pin 401 can naturally be inserted into the pin hole 411 to lock the positions of the counterweight 42 and the clamping member 43, and open the optical machine clamping space to a certain size (larger than the size of the near-eye display optical machine). At this time, the driving force can be removed, and the near-eye display optical machine can be placed. After the near-eye display optical machine is placed, the positioning pin 401 is pulled, the limit is released, and the counterweight 42 and the clamping member 43 naturally fall and press the near-eye display optical machine. The whole can be operated by one person, which is convenient for operation.

[0033] A plurality of pin holes 411 can be arranged at intervals along the height direction of the column 41, so as to provide optical machine clamping spaces with a variety of opening specifications to adapt to near-eye display optical machines of different sizes and improve the applicable range.

[0034] The principle of AA is as Figure 3 As shown, after the display screen 02 and the near-eye display optical machine 01 are clamped, they are basically aligned with the test module 03. The test module 03 includes a plurality of cameras 031, which point to the display interface (the position of the optical machine lens 011) of the near-eye display optical machine 01 at different angles. The display screen 02 is installed in the mirror cavity. The side wall 012 of the mirror cavity is generally an inclined side wall, and the bottom size is the smallest, which can be used for the preliminary positioning of the installation position of the display screen 01. The test module 03 can collect display pictures at multiple angles. According to the quality of the multiple optical machine display pictures collected and the difference between them and the display pictures played on the display screen, it can be judged whether there is alignment. When there is no alignment, by adjusting the second six-axis coupling table 30, the display screen 02 is driven by the display screen connection tooling 50 to adjust its posture, and the focusing between the display screen 01 and the optical machine lens 011 is adjusted until the test module judges that AA is successful.

[0035] Among them, for the tests of prototypes of different near-eye display optical machines 01, the specific sizes of the prototypes are different. After being fixed to the first installation platform 10 through the corresponding optical machine clamping tooling 40, it is difficult to ensure the alignment state between the prototype and the test module. At this time, the first six-axis coupling table 20 can be adjusted to align the near-eye display optical machine 01 with the test module.

[0036] In the near-eye display optical machine 01 and the test module AA, the near-eye display optical machine 01 and the display screen are both fixed on the first mounting platform 10, and move synchronously with the adjustment of the first six-axis coupling platform 20, which can ensure the basic alignment state of the near-eye display optical machine 01 and the display screen, and avoid rigid collision and extrusion between the display screen and the near-eye display optical machine 01 during the posture adjustment of the near-eye display optical machine 01, resulting in damage to the near-eye display optical machine 01 and the display screen.

[0037] Moreover, when performing AA between the near-eye display optical machine 01 and the test module, the alignment state of the near-eye display optical machine 01 and the display screen is not affected. In the process of AA between the near-eye display optical machine 01 and the display screen, the alignment state of the near-eye display optical machine 01 and the test module is not affected. That is, there is no need to specifically limit the order of pairwise AA, which can also improve operational flexibility.

[0038] After replacing the prototype, the AA state of the display screen and the test module in the previous test can be maintained. After further adjusting the prototype and the test module, although the AA state of the display screen and the test module will be synchronized and broken, based on the adjustment synchronization of the display screen and the prototype, the adjustment parameters of the first six-axis coupling platform 20 can be used as a reference to reversely adjust the second six-axis coupling platform 30, so as to quickly restore the AA state between the display screen, the prototype and the test module.

[0039] In order to reduce the collision damage between the display screen and the near-eye display optical machine 01 in AA, in the present embodiment, the display screen connecting tooling 50 includes a connecting block 51, a manipulator 53, and a universal joint 52 connected between the connecting block 51 and the manipulator 53. The connecting block 51 is fixedly connected to the displacement table of the second six-axis coupling table 30. During adjustment, if the display screen contacts and squeezes the inner wall of the near-eye display optical machine 01, the squeezing force can be buffered by the universal joint 52, thereby effectively reducing the rigid squeezing damage and improving the AA yield.

[0040] According to actual needs, the robot arm 53 can select at least one of a clamp and a suction cup.

[0041] Since the assembly space inside the near-eye display optical machine 01 is relatively small, in order to facilitate the clamping of the display screen, in this embodiment, the display screen connection tooling 50 also includes a back cover 54 glued and fixed to the display screen 02, so that the manipulator 53 can clamp the display screen 02 through the back cover 54. In a specific example, the display screen 02 and the back cover 54 are connected by a weakly sticky double-sided adhesive with an adhesive strength of between 300 grams and 600 grams, or by a pyrolytic adhesive, and there is no upper limit on the adhesive strength of the pyrolytic adhesive before pyrolysis, and the adhesive strength after pyrolysis is ≤2.6N / 20mm, which can take into account both the reliability of fixation and the convenience of material removal.

[0042] A coordination groove matching the clamping jaws can also be provided on the back cover 54 to facilitate the grasping operation of the clamping jaw type manipulator 53. The coordination groove can be arranged at the edge or corner position of the back cover 54, and the surface of the back cover is flat, which also facilitates the suction operation of the suction cup.

[0043] Since the display screen is assembled inside the near-eye display optical machine 01, when replacing it, the clamping work of the display screen needs to be moved out of the near-eye display optical machine 01. To facilitate the removal operation, the connecting block 51 and the displacement table of the second six-axis coupling table 30 can be slidably and fixedly connected, and the sliding direction is set towards the optical machine clamping tooling 40. By adjusting the fixed position of the connecting block 51, the display screen can be quickly removed or inserted within a large size range, while the second six-axis coupling table 30 only needs to achieve precise control of the display screen within a small range, and a higher-precision displacement control scheme can be adopted to reduce the coupling cost.

[0044] The present utility model also provides an AA device, which includes the above-mentioned AA module and a test module. The test module is coaxially and oppositely arranged with the optical machine clamping tooling and the display screen connecting tooling 50.

[0045] The AA module and the AA device provided by the present utility model can effectively implement the AA process. And by pre-fixing the near-eye display optical machine with the detachable optical machine clamping tooling and then integrally fixing it into the AA device, it can effectively be compatible with the effective fixing of various prototype near-eye display optical machines with unfixed versions, simply and effectively implement the AA process verification of various prototype near-eye display optical machines, without the version fixing procedure for the prototype near-eye display optical machines, shorten the R & D cycle of the near-eye display optical machine, provide convenience for the R & D of the near-eye display optical machine, and have low requirements for equipment automation, which can further reduce the R & D cost.

[0046] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] The above-described embodiments only represent several specific implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. An AA module, characterized in that: include: a first mounting platform, a first six-axis coupling platform, and a second six-axis coupling platform, wherein: The first mounting platform is fixedly connected to the translation platform of the first six-axis coupling platform, and the second six-axis coupling platform is fixedly arranged on the first mounting platform; The first installation platform may also be provided with an optical-mechanical clamping tool, and the displacement platform of the second six-axis coupling platform is fixedly provided with a display screen connecting tool, and the optical-mechanical clamping tool is coaxially aligned with the display screen connecting tool; The optical-mechanical clamping tooling includes: a column fixedly set on the first mounting platform, a counterweight block vertically slidably connected to the column, a clamp fixedly connected to the counterweight block, and a positioning platform detachably set on the top of the column, wherein the clamp is an inverted L-shape to form an optical-mechanical clamping space between the top plate of the clamp and the positioning platform.

2. The AA module according to claim 1, characterized in that: The display screen connection tooling comprises a connection block, a manipulator, and a universal joint connecting the connection block and the manipulator, and the connection block is fixedly connected to the displacement table of the second six-axis coupling table.

3. The AA module according to claim 2, characterized in that: The manipulator includes at least one of a gripper and a suction cup.

4. The AA module according to claim 2, characterized in that: The display screen connection tool also includes a back cover glued and fixed to the display screen, so that the robot arm can clamp the display screen through the back cover.

5. The AA module according to claim 4, characterized in that: The manipulator comprises a clamping claw, and the back cover is also provided with a coordination groove matching the clamping claw.

6. The AA module according to claim 2, characterized in that: The connecting block is slidably and fixedly connected to the translation stage of the second six-axis coupling stage, and the sliding direction points to the optical-mechanical clamping fixture.

7. The AA module according to claim 1, characterized in that: The optical-mechanical clamping tool further includes: a contact column arranged in the clamping piece, the contact column is vertically arranged in the top plate of the clamping piece, and the bottom end of the contact column is a silicone structure.

8. The AA module according to claim 1, characterized in that: The side of the column is also provided with a pin hole which is plugged and matched with the positioning pin, and the side wall of the counterweight block is also provided with a positioning pin installation hole, and the positioning pin is elastically arranged on the counterweight block through the positioning pin installation hole.

9. The AA module according to claim 8, characterized in that: A plurality of pin holes are arranged at intervals along the height direction of the column.

10. An AA device, characterized in that: It comprises the AA module as described in any one of claims 1 to 9, and a test module, wherein the test module is coaxially aligned with the optical-mechanical clamping tooling and the display screen connecting tooling.

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