Binocular optical module active alignment system and method

Abstract

The present disclosure relates to a binocular optical module active alignment system and method. The system comprises a moving mechanism including a track and a stage, the track including an upstream area and a downstream area, the stage carrying a binocular optical module and moving along the track; a dispensing mechanism arranged in the upstream area to dispense at a dispensing position of the binocular optical module; an active alignment mechanism located above the track in the downstream area to obtain a combined image detection result of the binocular optical module, and adjust the relative positions between display elements and other optical elements of the binocular optical module based on the combined image detection result to meet a set standard; and a curing mechanism to cure the dispensing position of the binocular optical module in a state that the relative positions of the optical elements of the binocular optical module after active alignment remain unchanged. Through the above method, the precision and imaging effect of the cured binocular optical module can be ensured.

Description

Technical Field

[0001] This disclosure pertains to the field of optical device fabrication and manufacturing, and specifically relates to a binocular optical module active alignment system and method. Background Technology

[0002] Head-mounted display devices consist of an optical module for imaging and a support structure. Currently, most head-mounted display devices are composed of two single-eye optical modules, each including a single-eye lens and a screen. For dual-eye optical modules, a crucial indicator to test during assembly is the degree of binocular image merging. Poor binocular image merging can cause users to perceive that the images for their left and right eyes do not overlap, rendering the display unusable. It can also lead to visual fatigue due to limitations in user tolerance. Therefore, the image merging accuracy of head-mounted display devices has a significant impact on product display quality and user experience.

[0003] For the production of optical components, the AA process is a necessary condition to ensure the precision of optical components. The so-called AA process, or Active Alignment, is a technology for determining the relative positions of components during assembly.

[0004] In existing technologies, the fixed connection between optical components of a binocular optical module is typically achieved through active alignment, dispensing, and curing steps, which are usually performed in different areas. After active alignment, dispensing adhesive into the designated area cannot guarantee that the optical components will maintain their relative positions after active alignment. Furthermore, the flowability of the UV adhesive during dispensing can alter the relative positions of the optical components. Even slight deviations during the movement of the adhesive to the curing area after dispensing can cause relative displacement between the two actively aligned optical components, thus affecting the accuracy of the final cured optical assembly. Therefore, there is a need for an active alignment system and method that can achieve high-precision assembly of binocular optical modules. Summary of the Invention

[0005] This disclosure is made based on the above-mentioned needs of the prior art. The technical problem to be solved by this disclosure is to provide an active alignment system and method for a binocular optical module to improve the accuracy and performance of the assembled binocular optical module.

[0006] To address the aforementioned problems, the technical solutions provided in this disclosure include:

[0007] A dual-spectrum optical module active alignment system is provided, comprising: a moving mechanism including a track and a stage, the track including an upstream region and a downstream region, the stage for carrying a dual-spectrum optical module composed of display elements and other optical elements, and moving along the track; a dispensing mechanism disposed in the upstream region for dispensing adhesive at the dispensing position of the dual-spectrum optical module; an active alignment mechanism located above the track in the downstream region for acquiring the image detection result of the dual-spectrum optical module and adjusting the relative position between the elements of the dual-spectrum optical module based on the image detection result to meet a set standard; a curing mechanism disposed in the downstream region; the curing mechanism is operably aligned with the dispensing joint position of the actively aligned dual-spectrum optical module to cure the dispensing position of the dual-spectrum optical module without moving the dual-spectrum optical module and keeping the relative position between the elements of the actively aligned dual-spectrum optical module unchanged; and a main controller electrically connected to the moving mechanism, dispensing mechanism, active alignment mechanism, and curing mechanism to control the movement of the dual-spectrum optical module and the execution of dispensing, active alignment, and curing actions.

[0008] The above settings allow for sequential dispensing, active alignment, and curing during the assembly of optical components. By placing the active alignment and curing processes in the same location, curing can be performed directly after active alignment, ensuring alignment accuracy and thus guaranteeing the precision of the optical module and the imaging effect.

[0009] Preferably, the active alignment mechanism includes: an optical detection unit for real-time monitoring of imaging data when the screen of the binocular optical module is lit, and obtaining the image combination detection result of the binocular optical module; the optical detection unit includes two imaging data acquisition devices; and a third moving unit connected to the imaging data acquisition devices, having an axis that moves in the front-back direction, and capable of driving the imaging data acquisition devices to move in the front-back direction.

[0010] Preferably, the active alignment mechanism further includes: two suction execution units, each including a suction cup, for suctioning two display elements in the binocular optical module and providing adsorption force during active alignment and curing; and two second moving units, each connected to the suction execution units, for moving the display elements to generate relative displacement with other optical elements in the binocular optical module.

[0011] Preferably, the curing mechanism includes: a curing lamp; comprising multiple rows of lamp bodies, each lamp body in each row corresponding to a dispensing position; and a fourth moving unit connected to the curing lamp, having an axis that moves horizontally and is capable of moving the curing lamp horizontally.

[0012] Preferably, the dispensing mechanism includes: a dispensing position acquisition unit for acquiring an appearance image of the binocular optical module and identifying the dispensing position therefrom; a dispensing execution unit including a dispensing output port facing downward for dispensing UV adhesive; and a first moving unit connected to the dispensing position acquisition unit and the dispensing execution unit respectively, driving the dispensing position acquisition unit to move to determine the dispensing position and driving the dispensing execution unit to move to the dispensing position.

[0013] A method for active alignment of a binocular optical module is also provided. Using the aforementioned active alignment system for a binocular optical module, the method includes: placing a binocular optical module, which combines display elements and other optical elements, on a stage and moving it along a track to a first position; applying adhesive to the dispensing position of the binocular optical module placed on the stage; moving the stage along the track to a second position; acquiring the binocular merging result of the binocular optical module; and actively aligning the display elements and other optical elements in the binocular optical module based on the binocular merging result until the imaging of the binocular optical module meets a set standard; and irradiating and curing the dispensing area in the binocular optical module located at the second position with a curing lamp to fix the aligned display elements and other optical elements.

[0014] This method is based on the aforementioned dual-optical module active alignment system. It also involves a dispensing step followed by active alignment and curing. Since the active alignment and curing are set in the same mechanism without a clear boundary, the structure performing the active alignment and the structure participating in the curing can cooperate with each other to further ensure the stability of the entire process, thereby achieving high precision in the final optical module.

[0015] Preferably, the dispensing mechanism for dispensing adhesive at the dispensing position of the binocular optical module placed on the stage includes: a dispensing position acquisition unit acquiring the dispensing position of the binocular optical module, a first moving unit driving the dispensing execution unit to move until the dispensing output port corresponds to the dispensing position, and UV adhesive being output from the dispensing output port.

[0016] Preferably, the active alignment mechanism actively aligns the binocular optical module until the imaging of the binocular optical module meets the set standard, including: the second moving unit moves the suction execution unit above the display element and suctions the display element through a suction cup; the third moving unit moves the imaging data acquisition device to the monitoring position, and the imaging data acquisition device monitors the imaging data of the binocular optical module in real time; the second moving unit adjusts the position of the suction execution unit according to the imaging data to change the relative relationship between the display element and other optical elements in the binocular optical module.

[0017] Preferably, after active alignment is completed, the display element and other optical elements are fixed by curing the dispensing area with a curing lamp. This includes: maintaining the suction cup's adsorption action, and a fourth moving unit driving the curing lamp to a second position and irradiating it toward the dispensing position.

[0018] Preferably, the active alignment method of the optical module further includes: after curing, the suction execution unit cuts off the suction, and the second moving unit drives the suction execution unit to reset.

[0019] Compared to existing technologies, this disclosure employs a method of first applying adhesive, then performing active alignment and curing. The combination of active alignment and curing ensures the relative fixation of the components' positions during curing, preventing changes in optical parameters and ensuring that the binocular imaging performance of the binocular optical module output after the above process meets preset requirements, thus guaranteeing quality control. Compared to the method of performing active alignment first, then applying adhesive and curing, this effectively avoids the possibility of misalignment after active alignment. Active alignment is a crucial step in ensuring the accuracy of the final optical parameters. Even slight movements after alignment can cause significant changes in optical parameters. Traditional methods for assembling optical components cannot completely guarantee that they are unaffected by external environmental factors, failing to meet the requirements for precise optical parameters. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this specification 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 recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the binocular optical module in an embodiment of this disclosure;

[0022] Figure 2 This is an enlarged schematic diagram of part A of the binocular optical module in an embodiment of this disclosure;

[0023] Figure 3 This is a schematic diagram of the upper component in an embodiment of this disclosure;

[0024] Figure 4 This is a schematic diagram of the lower component in an embodiment of this disclosure;

[0025] Figure 5 This is a schematic diagram of the structure of the moving mechanism in an embodiment of this disclosure;

[0026] Figure 6 This is a schematic diagram of the dispensing mechanism in an embodiment of this disclosure;

[0027] Figure 7This is a schematic diagram of the active alignment mechanism in an embodiment of this disclosure;

[0028] Figure 8 This is a schematic diagram of the structure of the second moving unit in an embodiment of this disclosure;

[0029] Figure 9 This is a schematic diagram of the curing mechanism in an embodiment of this disclosure;

[0030] Figure 10 This is a schematic diagram of the structure of the active alignment system of the optical components in an embodiment of this disclosure;

[0031] Figure 11 This is a schematic diagram of the outline of the dispensing area acquired by the CCD camera in an embodiment of this disclosure;

[0032] Figure 12 This is an electrical connection diagram of the dispensing mechanism according to an embodiment of the present disclosure;

[0033] Figure 13 This is an electrical connection diagram of the alignment and curing apparatus according to an embodiment of the present disclosure;

[0034] Figure 14 This is an electrical connection diagram of the active alignment system of the binocular optical module according to an embodiment of this disclosure;

[0035] Figure 15 This is a flowchart illustrating the steps of the active alignment method for an optical module according to an embodiment of this disclosure.

[0036] Figure label:

[0037] 1. Dual-eye optical module; 101. Upper component; 101A. First protruding part; 101B. First hollowed-out part; 102. Lower component; 102A. Second protruding part; 102B. Second hollowed-out part; 2. Moving mechanism; 201. Track; 202. Stage; 3. Dispensing mechanism; 301. CCD camera unit; 302. Dispensing execution unit; 302A. Dispensing output port; 303. First moving unit; 303A. Dispensing X-axis; 303B. Dispensing Z-axis; 304. First controller; 4. Alignment and curing device; 40 1. Suction unit; 401A. Suction cup; 402. Second moving unit; 402A. AA-X axis; 402B. AA-Y axis; 402C. AA-Z axis; 402D. AA-XU axis; 402E. AA-YU axis; 402F. AA-ZU axis; 403. CCD vision guidance camera; 404. Third moving unit; 404A. AA-CCD-Y2 axis; 405. Second controller; 406. Curing lamp; 407. Fourth moving unit; 407A. Curing X axis; 5. Main controller; 6. Worktable. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] In the description of the embodiments of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the term "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0040] Throughout the text, the terms “top,” “bottom,” “above,” “below,” and “on top” refer to the relative positions of components of the device, such as the relative positions of the top and bottom substrates within the device. It is understood that the device is multifunctional and independent of its spatial orientation.

[0041] To facilitate understanding of the embodiments of this application, the following will provide further explanation and description with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application.

[0042] Example 1

[0043] This embodiment provides a dual-optical optical module active alignment system, such as Figures 1-14 As shown.

[0044] In one embodiment of this example, refer to Figure 1 and Figure 2 As shown, the binocular optical module 1 includes two monocular optical modules arranged side-by-side. Each monocular optical module includes an upper element 101 and a lower element 102 placed vertically. The lower element 102 of the two monocular optical modules is fixed on the same connecting bracket. The binocular focusing performance of the binocular optical module is adjusted by changing the position of the two upper optical elements relative to the lower optical element. (Refer to...) Figure 3 and Figure 4The upper component 101 includes a screen assembly, and the lower component 102 includes a support assembly, in which other optical components of the optical module are housed. The screen assembly and support assembly are compatible. The operator places the upper component 101 and lower component 102, aligned vertically, on the stage 2. Although the alignment may vary slightly with each manual operation, the upper component 101 and lower component 102 have corresponding areas with positioning structures within those areas. This means that manual operation can ensure that the relative position of the upper component 101 and lower component 102 does not deviate too much from the accurate position. However, for precision optical instruments, high-precision alignment is required, with even higher requirements for the control of relative position and angle. Even slight differences can affect the final imaging of the optical instrument, making it unable to meet the visual requirements of binocular image merging. Furthermore, manual alignment cannot guarantee the high precision and accuracy requirements of the binocular optical module. Therefore, an active alignment system for the binocular optical module is needed.

[0045] refer to Figure 10 As shown, the binocular optical module active alignment system includes a worktable 6, a moving mechanism 2, a dispensing mechanism 3, and an alignment and curing device 4.

[0046] The worktable 6 carries the following actuators for active alignment: a moving mechanism 2, a dispensing mechanism 3, and an alignment and curing device 4.

[0047] The moving mechanism 2 is mounted on the workbench 6, as shown in the reference. Figure 5 As shown, the moving mechanism 2 includes a track 201 and a platform 202 mounted on the track 201. The track 201 includes an upstream section near the loading position and a downstream section away from the loading position, described below with the side near the loading position as the front. The platform 202 is provided with a contoured groove adapted to the binocular optical module 1 for supporting the binocular optical module 1. The track 201 provides a moving path for the platform 202, allowing it to move between the upstream and downstream sections along the extension direction of the track 201. Correspondingly, the worktable 6 includes an upstream region and a downstream region. Further, the track 201 includes a first position upstream and a second position downstream, and the platform 202 moves between the first and second positions based on power drive. Further, for ease of subsequent explanation, the track 201 is named the Y1 axis, i.e., the axis extending along the front-rear direction of the worktable 6.

[0048] Reference Figure 6 As shown, the dispensing mechanism 3 is located in the upstream region of the worktable 6 and near the first position. The dispensing mechanism 3 includes a dispensing bracket disposed above the track 201, and a dispensing position acquisition unit, a dispensing execution unit 302, a first moving unit 303, and a first controller 304 disposed on the dispensing bracket.

[0049] The dispensing position acquisition unit includes a CCD camera unit 301, which is used to acquire the dispensing position of the binocular optical module 1. Specifically, the dispensing position acquisition unit can acquire the appearance image of the binocular optical module 1, automatically capture the outline of the preset dispensing area from the appearance image of the binocular optical module 1, and simulate and calculate the precise positioning of the dispensing in real time.

[0050] In one specific embodiment of this example, refer to Figure 3 and Figure 4 As shown, the upper surface of the lower component 102 includes a first protruding portion 101A and a first hollowed-out portion 101B, and the lower surface of the upper component 101 includes a second protruding portion 102A and a second hollowed-out portion 102B. The first protruding portion 101A and the second hollowed-out portion 102B correspond to each other, and the first hollowed-out portion 101B and the second protruding portion 102A correspond to each other. The first protruding portion 101A, the first hollowed-out portion 101B, the first hollowed-out portion 101B, and the second protruding portion 102A constitute the positioning structure of the upper component 101 and the lower component 102. The areas of the first and second hollowed-out portions are larger than the areas of the first and second protruding portions, meaning that the first and second protruding portions can move relative to each other between the first and second hollowed-out portions, thereby allowing adjustment of the positions of the upper component 101 and the lower component 102. (Refer to...) Figure 11 As shown, the outline of the preset dispensing area is formed by a hollow portion and a raised portion. The dispensing position acquisition unit identifies the dispensing position by recognizing the aforementioned outline position in the appearance image of the binocular optical module captured by the CCD camera lens.

[0051] The first moving unit 303 is connected to the CCD camera unit 301 to move the CCD camera unit 301 to the preset dispensing area, thereby determining the precise position of the dispensing. Further, the first moving unit 303 determines the preset dispensing area based on the size or model of the binocular optical module 1, moves the CCD camera unit 301 to the corresponding position to obtain the outline of the preset dispensing area, and calculates the precise position of the dispensing.

[0052] In one embodiment of this invention, the first moving unit 303 includes a dispensing X-axis 303A that moves horizontally left and right, and a dispensing Z-axis 303B that moves vertically up and down. Since the moving mechanism 2 moves the stage 2 to the first position via the Y1 axis, the first moving unit 303 does not need to have an axis extending in the front-back direction. By moving the first moving unit 303 left and right, combined with the front-back movement of the stage 202 on the track 201, multi-position dispensing of two monocular optical modules is achieved.

[0053] The dispensing execution unit 302 includes a dispensing output port 302A, which is arranged downwards and used to dispense UV adhesive to the dispensing position. The dispensing position is a precise position determined by the CCD camera unit 301.

[0054] The first moving unit 303 is also connected to the dispensing execution unit 302 to move the dispensing execution unit 302 to the dispensing position determined by the CCD camera unit 301. Specifically, it moves the dispensing output port 302A to be directly above the dispensing position to dispense UV adhesive.

[0055] First controller 304, refer to Figure 12 The first controller 304 is electrically connected to the CCD camera unit 301, the dispensing execution unit 302, and the first moving unit 303, respectively. When the stage 202 moves to the first position via the track 201, the first controller 304 begins to respond. The first controller 304 controls the first moving unit 303 to move the CCD camera unit 301 according to the size or model information of the binocular optical module 1, until it moves to the position corresponding to the preset dispensing area, and activates the CCD camera unit 301 to automatically capture the outline of the preset dispensing position, calculate the precise positioning of the dispensing, and transmit the precise positioning of the dispensing to the first controller 304. The first controller 304 then controls the first moving unit 303 to move the dispensing output port 302A above the precise positioning of the dispensing, and controls the dispensing output port 302A to output UV glue.

[0056] The curing device 4 is aligned and positioned downstream of the workbench 6, near the second location. (Refer to...) Figures 7-9 As shown, the alignment and curing device 4 includes an active alignment mechanism, a curing mechanism, and a second controller 405. (Refer to...) Figure 7 As shown, the active alignment mechanism includes a suction execution unit 401, a second moving unit 402, an optical detection unit, and a third moving unit 404. (Refer to...) Figure 9 As shown, the curing mechanism includes a curing lamp 406 and a fourth moving unit 407. The second controller 405 is electrically connected to the active alignment mechanism and the curing mechanism to control the execution of the automatic calibration mechanism and the curing mechanism. During the operation of the active alignment mechanism, the upper element 101 is always in a lit state, which enables the binocular optical module 1 to image. The relative positions of the upper element 101 and the lower element 102 are adjusted based on the imaging data until the imaging meets the requirements.

[0057] The suction unit 401 includes a suction cup 401A, which is positioned downwards. The suction cup 401A is used to pick up the upper component 101 in the binocular optical module 1, causing relative displacement between it and the lower component 102 located at the bottom of the binocular optical module 1. The displacement includes changes in distance and angle. Since the upper component 101 has a certain area, and the suction cup 401A only picks up a portion of the upper component 101, there are no high requirements for the suction position of the suction cup 401A, as long as it can ensure that the upper component 101 can move relative to the lower component 102 after the suction cup 401A picks up the component.

[0058] The optical inspection unit includes two imaging data acquisition devices, such as a CCD vision-guided camera 403, which can acquire imaging data of the binocular optical module 1 in real time, acquire binocular image combination detection results of the product in real time, and detect relevant optical parameters such as virtual image distance, field of view, distortion, resolution, ghosting stray light, etc. of the binocular optical module.

[0059] The second moving unit 402 is connected to the suction execution unit 401. Driven by the second moving unit 402, the relative positional relationship between the upper component 101 and the lower component 102 is changed, so that the binocular fusion detection result of the binocular optical module reaches the preset value.

[0060] Furthermore, refer to Figure 8 As shown, the second moving unit 402 includes a six-axis control platform. This platform has an AA-X axis 402A extending horizontally, an AA-Z axis 402C extending vertically, an AA-Y axis 402B extending forward / backward, an AA-XU axis 402D rotating horizontally, an AA-ZU axis 402F rotating vertically, and an AA-YU axis 402E rotating forward / backward. Since the binocular optical module includes two monocular optical modules, each monocular optical module needs to be adjusted separately. Therefore, there are two suction cups 401A (left and right), and two corresponding six-axis control platforms to control the position of the suction cups 401A. Figure 8 The six-axis control platform of the left target is only schematically marked.

[0061] The third moving unit 404 is connected to the CCD vision guidance camera 403. It moves the CCD vision guidance camera 403 from its standby position to its monitoring position and acquires the binocular fusion detection results of the binocular optical module 1 in real time. Based on the binocular fusion detection results, it determines the amount of movement required for the suction cup 401A to be adjusted. This allows the second moving unit 402 to adjust the suction cup 401A according to the amount of movement, ensuring that the imaging parameters of the binocular optical module 1 reach preset values. The monitoring position of the CCD vision guidance camera 403 is also determined based on the binocular optical module 1 located in the second position. The third moving unit 404 includes an AA-CCD-Y2 axis 404A extending in the front-back direction.

[0062] Reference Figure 13 As shown, the second controller 405 is electrically connected to the suction execution unit 401, the CCD vision guidance camera 403, the second moving unit 402, and the third moving unit 404. When the stage 202 moves to the second position via the track 201, the second controller 405 begins to respond. The second controller 405 controls the second moving unit 402 to move the suction execution unit 401 to the suction position based on the size or model information of the binocular optical module 1, so that the suction cup 401A adsorbs the upper component 101. Similarly, the third moving unit 404 moves the CCD vision guidance camera 403 to the monitoring position for imaging monitoring, and feeds the imaging data back to the second controller 405. The second controller 405 makes adjustments based on the imaging data and controls the second moving unit 402 to move the suction cup 401A. By adjusting the relative positions of the upper component 101 and the lower component 102, the image formed by the binocular optical module 1 meets the set standard, thus ensuring that the imaging of the binocular optical module meets the binocular merging requirements.

[0063] Curing lamp 406 cures the UV adhesive applied by dispensing mechanism 3. Curing lamp 406 has two rows of lamp bodies arranged opposite each other, the lamp bodies facing downward and in opposite directions, that is, the front row of lamp bodies facing backward and downward, and the rear row of lamp bodies facing forward and downward, so as to concentrate the light to illuminate the adhesive application position between the upper element 101 and the lower element 102, and cure the UV adhesive between them; each lamp body in the two rows corresponds to a dispensing position.

[0064] The fourth moving unit 407, connected to the curing lamp 406, moves the curing lamp 406 to a second position to cure the dispensing area between the upper component 101 and the lower component 102 of the bi-optical module located at the second position. Further, the fourth moving unit 407 includes a curing X-axis 407A extending horizontally.

[0065] Reference Figure 13The second controller 405 is electrically connected to the curing lamp 406 and the fourth moving unit 407. When the imaging data acquired by the CCD vision-guided camera 403 meets the set standard, the second controller 405 controls the third moving unit 404 to move the CCD vision-guided camera 403 from the monitoring position to the standby position, providing the necessary space for the movement and illumination of the curing lamp 406. At this time, the second controller 405 controls the fourth moving unit 407 to move the curing lamp 406 to the curing position, which can cure the dispensing area.

[0066] Once curing is complete, the second controller 405 cuts off the suction action of the suction execution unit 401, so that it no longer sucks up the upper component 101; and controls the second moving unit 402 to drive the suction execution unit 401 to reset.

[0067] By placing the active alignment mechanism and the curing mechanism in the same location, curing can be performed directly after alignment without moving the stage 202. This avoids relative displacement between the upper component 101 and the lower component 102 during the movement of the stage 202, ensuring the accuracy requirements of the optical components. Furthermore, the suction cup 401A retains its suction force after alignment to maintain the relative position between the upper component 101 and the lower component 102 during the dispensing process. It also prevents slight relative displacement between the upper component 101 and the lower component 102 when the suction action of the suction cup 401A is cut off. The suction action of the suction cup 401A is only cut off after curing is complete. At this point, the upper component 101 and the lower component 102 are relatively fixed and will not shift position, ensuring the accuracy of the optical module and good imaging effect.

[0068] The dual-optical optical module active alignment system also includes a main controller 5, which is electrically connected to the moving mechanism 2, the dispensing mechanism 3, and the alignment and curing device 4 to control the movement of the moving mechanism 2 and the execution of dispensing, active alignment, and curing. The main controller 5 controls the operation of the first controller 304 based on a first trigger signal; the main controller 5 also controls the operation of the second controller 405 based on data indicating the end of dispensing. The first trigger signal includes a signal indicating that the stage 202 has moved to a first position. After the operator issues a command to start the system, the stage 202, carrying the dual-optical optical module, moves to the first position, and the first controller 304 begins the dispensing operation. After the dispensing operation is completed, the stage 202 moves to a second position, and the second controller 405 controls the active alignment and curing operations. The moving mechanism 2 can be directly controlled by the main controller 5, or it can be controlled by a third controller, which is electrically connected to the main controller 5.

[0069] Example 2

[0070] This embodiment provides an active alignment method for a dual-optical optical module, such as... Figure 15 As shown.

[0071] The binocular optical module active alignment method in this embodiment uses the binocular optical module active alignment system from Embodiment 1. The binocular optical module active alignment method includes the following steps:

[0072] S1, the binocular optical module 1, which is composed of the upper and lower components, is placed on the stage 202. The stage 202 moves along the track 201 to the first position, and the dispensing mechanism 3 dispenses adhesive at the dispensing position of the binocular optical module placed on the stage 202.

[0073] The stage 202 can move along the track 201 between a first position and a second position. When the stage 202 moves to the first position, the dispensing mechanism 3 operates.

[0074] Based on the size or model information of the dual-eye optical module 1, the first moving unit 303 is controlled to move the CCD camera unit 301 until it reaches a position corresponding to the preset dispensing area. The CCD camera unit 301 automatically captures the outline of the preset dispensing position and calculates the precise positioning of the dispensing. The first moving unit 303 then moves the dispensing execution unit 302 connected to it until the dispensing output port 302A in the dispensing execution unit 302 is precisely moved above the dispensing position, and the dispensing output port 302A outputs UV adhesive. Through the continuous movement of the dispensing execution unit 302, combined with the back-and-forth movement of the stage 202 at the first position, dispensing at multiple dispensing positions of the dual-eye optical module is completed.

[0075] S2, the stage 202 moves along the track 201 to the second position, and the active alignment mechanism actively aligns the binocular optical module 1 until the imaging of the binocular optical module 1 meets the set standard.

[0076] When the stage 202 moves to the second position, the second moving unit 402 in the alignment and curing device drives the suction execution unit 401 to move above the upper component 101 and picks up the upper component 101 through the suction cup 401A. This allows for a relative positional change between the upper component 101 and the lower component 102 to adjust the final image.

[0077] The third moving unit 404 moves the CCD vision guidance camera 403 to the monitoring position. The CCD vision guidance camera 403 monitors the imaging data of the binocular optical module 1 in real time when the screen is illuminated, thereby obtaining the binocular merging data of the binocular optical module. The second moving unit 402 adjusts the position of the suction execution unit 401 according to the binocular merging data. The CCD vision guidance camera 403 monitors the imaging data of the binocular optical module 1 after the position is adjusted, compares the imaging data with the set standard. If the imaging data meets the set standard, the active alignment is completed. If the imaging data does not meet the set standard, the position of the suction cup 401A needs to be adjusted and monitoring continues until the imaging data meets the set standard.

[0078] By adjusting the position of the display element relative to other optical elements through the above active alignment process, the binocular optical module after active alignment meets the binocular image combination requirements, which can eliminate assembly errors generated during the assembly process and improve the product qualification rate.

[0079] S3, the upper component 101 and lower component 102 in the binocular optical module located in the second position are fixedly aligned by irradiating and curing the dispensing area with curing lamp 406.

[0080] After active alignment, the third moving unit 404 moves the CCD vision guidance camera 403 from the monitoring position to the standby position to provide the necessary space for the subsequent curing step. The fourth moving unit 407 moves the curing lamp 406 to the curing position and illuminates the upper component 101 and the lower component 102 to fix them relatively.

[0081] During the curing process after active alignment, the suction execution unit 401 always maintains adsorption on the upper component 101, thereby ensuring that the upper component 101 and the lower component 102 of the binocular optical module always remain in the state after active alignment.

[0082] S4, the suction execution unit 401 cuts off the suction, and the second moving unit 402 drives the suction execution unit 401 to reset.

[0083] During curing, the suction cup 401A always adheres to the upper component 101 to ensure that the upper component 101 and the lower component 102 always maintain the determined alignment position. After curing, the two are relatively fixed, and the relative position of the two will not change even if the suction force of the suction cup 401A is removed.

[0084] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for active alignment of a binocular optical module, used for dispensing, active alignment, and curing of a binocular optical module, characterized in that, include: The binocular optical module, which combines two display elements and other optical elements, is placed on the stage and moved along the track to the first position. The dispensing mechanism dispenses adhesive at the dispensing position of the binocular optical module placed on the stage. The dispensing position is located between the upper element and the lower element. The upper element includes the display element, and the lower element includes the bracket assembly and other optical elements disposed in the bracket assembly. The stage moves along the track to the second position, and the active alignment mechanism acquires the binocular image merging result of the binocular optical module. Based on the binocular image merging result, it actively aligns the display element and other optical elements in the binocular optical module until the imaging of the binocular optical module meets the set standard. The active alignment mechanism includes an optical detection unit, a third moving unit, two suction execution units, and two second moving units. The second moving units drive the suction execution units to move above the display element and pick up the display element through a suction cup. The third moving unit drives the imaging data acquisition device to the monitoring position, and the imaging data acquisition device monitors the imaging data of the binocular optical module in real time. The second moving units adjust the position of the suction execution units according to the imaging data to change the relative relationship between the display element and other optical elements in the binocular optical module. While maintaining the suction cup's adsorption action, the fourth moving unit moves the curing lamp to the second position and irradiates it toward the dispensing position. The curing lamp irradiates and cures the dispensing area in the binocular optical module located at the second position to fix the aligned display elements and other optical elements.

2. The active alignment method for a binocular optical module according to claim 1, characterized in that, The dispensing mechanism for dispensing adhesive at the dispensing position of the binocular optical module placed on the stage includes: a dispensing position acquisition unit acquiring the dispensing position of the binocular optical module, a first moving unit driving the dispensing execution unit to move until the dispensing output port corresponds to the dispensing position, and UV adhesive being output from the dispensing output port.

3. The active alignment method for a binocular optical module according to claim 1, characterized in that, The optical module active alignment method further includes: after curing, the suction execution unit cuts off suction, and the second moving unit drives the suction execution unit to reset.

4. A binocular optical module active alignment system, characterized in that, The method for implementing the active alignment method of the binocular optical module according to any one of claims 1-3 includes: A moving mechanism includes a track and a stage, the track including an upstream region and a downstream region, the stage for carrying a binocular optical module composed of display elements and other optical elements, and moving along the track; A dispensing mechanism is located in the upstream area to dispense adhesive at the dispensing location of the dual-optical module; An active alignment mechanism, located above the track in the downstream area, is used to acquire the image detection results of the dual-optical module and adjust the relative positions between the components of the dual-optical module based on the image detection results to meet a set standard. The active alignment mechanism includes: an optical detection unit for real-time monitoring of imaging data when the dual-optical module screen is lit and acquiring the image detection results; the optical detection unit includes two imaging data acquisition devices; a third moving unit connected to the imaging data acquisition devices, having an axis that moves in the front-back direction to drive the imaging data acquisition devices to move in the front-back direction; two suction execution units, each including a suction cup, for suctioning two display elements in the dual-optical module and providing suction force during active alignment and curing; and two second moving units, each connected to the suction execution units, driving the display elements to move relative to other optical elements in the dual-optical module. A curing mechanism is located in the downstream region; the curing mechanism is operably aligned with the dispensing joint of the actively aligned binocular optical module, so as to cure the dispensing position of the binocular optical module without moving the binocular optical module and keeping the relative positions between the components of the actively aligned binocular optical module unchanged. The main controller is electrically connected to the moving mechanism, dispensing mechanism, active alignment mechanism and curing mechanism respectively, so as to control the movement of the binocular optical module and the execution of dispensing action, active alignment action and curing action.

5. The binocular optical module active alignment system according to claim 4, characterized in that, The curing mechanism includes: Curing lamps consist of multiple rows of lamp bodies, with each lamp body in each row corresponding to a dispensing position. The fourth moving unit, connected to the curing lamp, has an axis that moves in the horizontal direction, enabling it to move the curing lamp in the horizontal direction.

6. The binocular optical module active alignment system according to claim 4, characterized in that, The dispensing mechanism includes: The dispensing location acquisition unit is used to acquire an appearance image of the binocular optical module and identify the dispensing location from it. The dispensing execution unit includes a dispensing output port, which is positioned downwards for dispensing UV adhesive; The first moving unit is connected to the dispensing position acquisition unit and the dispensing execution unit respectively. It moves the dispensing position acquisition unit to determine the dispensing position and moves the dispensing execution unit to the dispensing position.

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