Camera rotating shaft adjusting device

Abstract

The invention relates to a camera rotating shaft adjusting device, rotating shaft axes of an Rz-axis rotating adjusting mechanism, an Ry-axis rotating adjusting mechanism and an Rx-axis rotating adjusting mechanism are perpendicular to one another and intersect at one point, the point coincides with the center point of the end face of a lens of a camera, and when a certain rotating shaft is adjusted, due to the fact that the three rotating shaft axes intersect at the center point of the end face of the lens, the camera rotating shaft is adjusted. The camera rotates around the intersection point, and the intersection point coincides with the optical center of the lens, so that the position of the shooting focus of the camera in the space cannot move in the X-axis, Y-axis or Z-axis direction due to the adjustment of a single rotating shaft, and compared with the situation that the shooting focus is deviated due to the adjustment of one axis by a conventional adjusting mechanism, other axes are needed for auxiliary adjustment, the adjustment accuracy is improved. According to the device, additional auxiliary adjusting operation is not needed, the adjusting process is directly simplified, due to the fact that all the rotating shafts rotate around the same accurate intersection, adjusting of all the shafts is independent, interference caused by adjusting one shaft to other shafts is avoided, and accuracy is improved.

Description

Technical Field

[0001] The present application relates to the field of VR glasses detection, and in particular to a camera rotation axis adjustment device. Background Art

[0002] As AR / VR glasses move toward high-precision inspection, requirements for optical system imaging quality and distortion control are becoming increasingly stringent. During the inspection process, large, heavy, specialized cameras are required to capture images from multiple angles to ensure a comprehensive assessment of key components such as lenses and frames. This requires the camera to possess high-precision three-dimensional rotational adjustment capabilities, and the center of rotation must be precisely aligned with the optical center of the lens to avoid introducing additional measurement errors.

[0003] In the related art, the conventional adjustment mechanism is that the centers of the three rotation axes (Rx, Ry and Rz) do not overlap. Adjusting one of the axes will cause the camera's shooting focus to move in the X, Y or Z axis direction. Auxiliary adjustment of the three rotation axes is required to ensure that the camera focus position remains unchanged, which makes the adjustment cumbersome and the adjustments of the three rotation axes affect each other's accuracy. Summary of the Invention

[0004] The present application provides a camera rotation axis adjustment device, which can solve the problem that the centers of the rotation axes (Rx, Ry and Rz) of the conventional adjustment mechanism do not overlap. Adjusting one of the axes will cause the camera's shooting focus to move in the X, Y or Z axis direction. Auxiliary adjustment of the three rotation axes is required to ensure that the camera focus position remains unchanged, resulting in cumbersome adjustment and technical problems that the adjustments of the three rotation axes affect each other's accuracy.

[0005] The present invention provides a camera rotation axis adjustment device, comprising: An Rx-axis rotation adjustment mechanism, an Ry-axis rotation adjustment mechanism, and an Rz-axis rotation adjustment mechanism, wherein one of the three rotation-axis rotation adjustment mechanisms is hinged between the remaining two rotation-axis rotation adjustment mechanisms; The rotation axis of the Rz-axis rotation adjustment mechanism, the rotation axis of the Ry-axis rotation adjustment mechanism, and the rotation axis of the Rx-axis rotation adjustment mechanism are perpendicular to each other and converge at one point, and the point coincides with the center point of the lens end face of the camera.

[0006] In one embodiment, the Rx-axis rotation adjustment mechanism includes: Two side plates, a camera mounting plate rotatably connected between the two side plates, the rotation axis of the camera mounting plate being the rotation axis of the Rx-axis rotation adjustment mechanism, and the two side plates being fixedly connected to the Ry-axis rotation adjustment mechanism; A telescopic drive mechanism 1 is connected between the side plate and the camera mounting plate, and the telescopic drive mechanism 1 can extend or contract to drive the camera mounting plate to rotate about its own rotation axis.

[0007] In one embodiment, the telescopic drive mechanism 1 comprises: an adjusting screw rod 1, one end of which is rotatably connected to the camera mounting plate; A rotating shaft, both ends of which are rotatably connected between the two side plates, a through hole is opened on the rotating shaft, the other end of the adjusting screw passes through the through hole, and the outer wall of the adjusting screw is threadedly connected to two adjusting nuts, and the two adjusting nuts are located on opposite sides of the through hole.

[0008] In one embodiment, the Rx axis rotation adjustment mechanism further includes: four cams, Two of the cams 1 are rotatably mounted on the first side plate, and the other two cams 1 are rotatably mounted on the second side plate. Two arc-shaped guide grooves 1 are provided on opposite sides of the camera mounting plate, and each cam 1 is disposed in one of the arc-shaped guide grooves 1. Or two of the cams are rotatably mounted on one inner side wall of the two opposite inner sides of the camera mounting plate, and the other two cams are rotatably mounted on the other inner side wall of the two opposite inner sides of the camera mounting plate, and two arc-shaped guide grooves are provided on the sides of the two side plates facing each other, and each cam is arranged in one of the arc-shaped guide grooves.

[0009] In one embodiment, the Rx-axis rotation adjustment mechanism further includes: A locking bolt 1, wherein the locking bolt 1 is fixed to the camera mounting plate; A locking nut, the side plate is provided with a bolt waist slot hole, the locking nut is arranged in the bolt waist slot hole, and is threadedly connected with the locking bolt.

[0010] In one embodiment, the camera mounting plate is provided with a scale pointer 1; The side plate is provided with an angle scale arc hole 1, and the scale pointer 1 is located in the angle scale arc hole 1.

[0011] In one embodiment, the Ry-axis rotation adjustment mechanism includes: a bottom plate, the bottom plate being rotatably connected to the Rz-axis rotation adjustment mechanism via a third rotation shaft, the rotation axis of the third rotation shaft being the rotation axis of the Ry-axis rotation adjustment mechanism; The telescopic drive mechanism 2 is connected between the base plate and the Rz-axis rotation adjustment mechanism. The telescopic drive mechanism 2 can extend or contract to drive the base plate to rotate about the rotation axis of the rotating shaft 3.

[0012] In one embodiment, the telescopic drive mechanism 2 includes: A second adjusting screw, one end of which is rotatably connected to the Rz-axis rotation adjustment mechanism; Rotating shaft 2, both ends of the rotating shaft 2 are fixedly connected to the Rx-axis rotation adjustment mechanism, the rotating shaft 2 is provided with a through hole 2, the other end of the adjusting screw 2 passes through the through hole 2, and the outer wall of the adjusting screw 2 is threadedly connected to two adjusting nuts 2, and the two adjusting nuts 2 are located on opposite sides of the through hole 2.

[0013] In one embodiment, the Ry-axis rotation adjustment mechanism further includes: A position locking block, one end of which is hinged to the Rz-axis rotation adjustment mechanism, and the position locking block is provided with a second bolt waist slot hole; A locking bolt 2, one end of which is fixed to the base plate, and the other end of which passes through the bolt waist slot 2, and a locking nut 2 is threadedly connected to the outer wall thereof.

[0014] In one embodiment, the Rz-axis rotation adjustment mechanism includes: A base, wherein a top plate is rotatably connected to the top of the base, the top plate is connected to the Ry-axis rotation adjustment mechanism, and the rotation axis of the top plate is the rotation axis of the Rz-axis rotation adjustment mechanism; The telescopic drive mechanism three is connected between the base and the Rz-axis rotation adjustment mechanism. The telescopic drive mechanism three can extend or contract to drive the top plate to rotate about its own rotation axis.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present application include: The rotation axes of the Rz-axis rotation adjustment mechanism, the Ry-axis rotation adjustment mechanism, and the Rx-axis rotation adjustment mechanism are perpendicular to each other and converge at a point, and this point coincides with the center point of the lens end face of the camera. When a certain rotation axis is adjusted, since the axes of the three rotation axes intersect at the center point of the lens end face, the camera rotates around this intersection point, and this intersection point coincides with the optical center of the lens, so that the position of the camera's shooting focus in space will not move in the X, Y or Z axis directions due to the adjustment of a single rotation axis. Compared with the conventional adjustment mechanism in which the centers of the three rotation axes do not coincide, adjusting one axis will cause the shooting focus to shift, requiring auxiliary adjustment of other axes. The present device does not require additional auxiliary adjustment operations, and directly simplifies the adjustment process. At the same time, since each rotation axis rotates around the same precise intersection point, the adjustment between each axis is independent of each other, avoiding interference with other axes caused by adjusting one axis, thereby significantly improving the accuracy of the camera rotation adjustment. Moreover, the present structure takes into account the large size, large load, and precise adjustment requirements of the camera, filling the market gap for precise angle adjustment of large-size cameras. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of a three-dimensional structure of a camera rotation axis adjustment device with a camera installed; Figure 2 is a schematic diagram of the three-dimensional structure of the camera rotation axis adjustment device without being installed on the camera; Figure 3 Schematic diagram of the three-dimensional structure of the Rx-axis rotation adjustment mechanism; Figure 4 Schematic diagram of the three-dimensional structure of cam 1 installed in arc-shaped guide groove 1; Figure 5 Schematic diagram of the three-dimensional structure of the Ry-axis rotation adjustment mechanism; Figure 6 Schematic diagram of the three-dimensional structure of the Rz-axis rotation adjustment mechanism; Figure 7 It is a schematic diagram of the three-dimensional structure of the cam 2 installed in the arc-shaped guide groove 2.

[0018] In the figure: 1. Rx-axis rotation adjustment mechanism; 11. Side plate; 111. Bolt waist groove hole one; 112. Angle scale arc hole one; 12. Camera mounting plate; 121. Arc guide groove one; 13. Adjusting screw one; 14. Rotating shaft one; 15. Adjusting nut one; 16. Cam one; 2. Ry-axis rotation adjustment mechanism; 21. Bottom plate; 22. Adjusting screw two; 23. Rotating shaft two; 24. Adjusting nut two; 25. Rotating shaft three; 26. Position locking block; 261. Bolt waist groove hole two; 3. Rz-axis rotation adjustment mechanism; 31. Base; 32. Top plate; 321. Arc guide groove two; 322. Bolt waist groove hole three; 33. Adjusting screw three; 34. Rotating shaft four; 35. Adjusting nut three; 36. Cam two; 4. Camera. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It's important to understand that as AR / VR glasses move toward high-precision testing, requirements for optical system imaging quality and distortion control are becoming increasingly stringent. During the inspection process, large, heavy, specialized cameras are required for multi-angle capture to ensure a comprehensive assessment of key components such as lenses and frames. This requires the camera to possess high-precision three-dimensional rotational adjustment capabilities, and the center of rotation must be precisely aligned with the optical center of the lens to avoid introducing additional measurement errors.

[0021] Among them, the conventional adjustment mechanism is that the centers of the three rotation axes (Rx, Ry and Rz) do not overlap. Adjusting one of the axes will cause the camera's shooting focus to move in the X, Y or Z axis direction. Auxiliary adjustment of the three rotation axes is required to ensure that the camera focus position remains unchanged, which makes the adjustment cumbersome and the adjustments of the three rotation axes affect each other's accuracy.

[0022] An embodiment of the present application provides a camera rotation axis adjustment device, which can solve the problem that the centers of the rotation axes (Rx, Ry and Rz) of the conventional adjustment mechanism do not overlap. Adjusting one of the axes will cause the camera's shooting focus to move in the X, Y or Z axis direction. Auxiliary adjustment of the three rotation axes is required to ensure that the camera focus position remains unchanged, resulting in cumbersome adjustment and technical problems that the adjustments of the three rotation axes affect each other's accuracy.

[0023] like Figure 1 and Figure 2As shown, an embodiment of the present application provides a camera rotation axis adjustment device, including: an Rx-axis rotation adjustment mechanism 1, an Ry-axis rotation adjustment mechanism 2 and an Rz-axis rotation adjustment mechanism 3. Among the three rotation axis rotation adjustment mechanisms, one rotation axis rotation adjustment mechanism is hinged between the remaining two rotation axis rotation adjustment mechanisms; the rotation axis axis of the Rz-axis rotation adjustment mechanism 3, the rotation axis axis of the Ry-axis rotation adjustment mechanism 2 and the rotation axis axis of the Rx-axis rotation adjustment mechanism 1 are perpendicular to each other and converge at one point, and the point coincides with the center point of the lens end face of the camera 4.

[0024] In this embodiment, Figure 1 As shown, the Rz-axis rotation adjustment mechanism 3 is hinged to the Ry-axis rotation adjustment mechanism 2, and the Ry-axis rotation adjustment mechanism 2 is hinged to the Rx-axis rotation adjustment mechanism 1. The rotation axes of the Rz-axis rotation adjustment mechanism 3, the Ry-axis rotation adjustment mechanism 2, and the Rx-axis rotation adjustment mechanism 1 are perpendicular to each other and intersect at a point, and this point coincides with the center point of the lens end face of the camera 4. When a certain rotation axis is adjusted, since the three rotation axes intersect at the center point of the lens end face, the camera rotates around the intersection point, and this intersection point coincides with the optical center of the lens, so that the corresponding The position of the camera's shooting focus in space will not move in the X, Y or Z axis directions due to the adjustment of a single rotation axis. Compared with the conventional adjustment mechanism in which the centers of the three rotation axes do not coincide, adjusting one axis will cause the shooting focus to shift, requiring auxiliary adjustment of other axes. This device does not require additional auxiliary adjustment operations, directly simplifying the adjustment process. At the same time, because the rotation axes rotate around the same precise intersection point, the adjustments between the axes are independent of each other, avoiding interference with other axes caused by adjusting one axis, thereby significantly improving the accuracy of camera rotation adjustment.

[0025] In one embodiment, Figure 3 As shown, the Rx-axis rotation adjustment mechanism 1 includes: two side plates 11, a camera mounting plate 12 is rotatably connected between the two side plates 11, the rotation axis of the camera mounting plate 12 is the rotation axis of the Rx-axis rotation adjustment mechanism 1, and the two side plates 11 are fixed to the Ry-axis rotation adjustment mechanism 2; a telescopic drive mechanism 1, the telescopic drive mechanism 1 is connected between the side plates 11 and the camera mounting plate 12, and the telescopic drive mechanism 1 can extend or contract to drive the camera mounting plate 12 to rotate about its own rotation axis.

[0026] In this embodiment, the Rx-axis rotation adjustment mechanism 1 is fixed to the Ry-axis rotation adjustment mechanism 2 through two side plates 11, and the side plates 11 are rotatably connected to the camera mounting plate 12. Combined with the setting of the telescopic drive mechanism 1, efficient and precise adjustment is achieved. When the Rx-axis direction needs to be adjusted, the telescopic drive mechanism 1 can directly extend or contract to drive the camera mounting plate 12 to rotate about its own rotation axis. Since the three rotation axis axes are perpendicular to each other and converge at the center point of the camera lens end face, this direct drive method enables the camera to rotate smoothly around the intersection point, and the position of the shooting focus in space will not move in the X, Y or Z axis directions due to the adjustment of the Rx axis.

[0027] In one embodiment, Figure 3 As shown, the telescopic drive mechanism 1 includes: two side plates 11, a camera mounting plate 12 is rotatably connected between the two side plates 11, the rotation axis of the camera mounting plate 12 is the rotation axis of the Rx-axis rotation adjustment mechanism 1, and the two side plates 11 are fixedly connected to the Ry-axis rotation adjustment mechanism 2 (wherein, the side plates 11 are fixed to the top of the base plate 21); an adjusting screw 13, one end of the adjusting screw 13 is rotatably connected to the camera mounting plate 12; a rotating shaft 14, both ends of the rotating shaft 14 are rotatably connected between the two side plates 11, the rotating shaft 14 is provided with a through hole 1, the other end of the adjusting screw 13 passes through the through hole 1, and the outer wall of the adjusting screw 13 is threadedly connected to two adjusting nuts 15, and the two adjusting nuts 15 are located on opposite sides of the through hole 1.

[0028] In this embodiment, the telescopic drive mechanism 1 is composed of an adjusting screw 13, a rotating shaft 14, and an adjusting nut 15, which cooperate with the side plate 11 and the camera mounting plate 12 to provide the Rx-axis rotation adjustment mechanism 1 with outstanding performance advantages. One end of the adjusting screw 13 is rotatably connected to the camera mounting plate 12, and the other end passes through the through hole 1 of the rotating shaft 14 and is threadedly connected to the outer wall of the screw via two adjusting nuts 15. When the adjusting nuts 15 are rotated, the adjusting screw 13 can telescope relative to the rotating shaft 14, thereby driving the camera mounting plate 12 to rotate about its rotating axis to achieve adjustment of the Rx-axis direction. This structural design allows for extremely high precision in the adjustment of the Rx-axis direction. By screwing the adjusting nut 15, the telescopic length of the adjusting screw 13 can be precisely controlled. Compared to other drive forms, fine adjustments to the Rx-axis rotation angle can be achieved, significantly improving the adjustment accuracy of the Rx-axis direction. At the same time, the threaded fastening characteristics of the adjusting nut 15 on both sides of the through hole 1 enable the adjusting screw 13 to be firmly locked after being adjusted into place, effectively resisting the influence of external factors such as vibration on the screw position during shooting, ensuring the stability of the camera mounting plate 12, and thus ensuring that the position of the shooting focus in space is not offset due to the adjustment of the Rx axis. In addition, the structure of the telescopic drive mechanism 1 is simple and easy to understand, and easy to operate. The operator only needs to use conventional tools to screw the adjusting nut 15 to complete the adjustment of the Rx axis direction, without the need for complex multi-axis coordinated operations, which greatly simplifies the adjustment process and improves work efficiency. In addition, because the side plate 11 is fixed to the top of the bottom plate 21 of the Ry-axis rotation adjustment mechanism 2, combined with the design that the axes of the three rotating axes converge at the center point of the camera lens end face, the adjustment of the Rx axis is independent of the Ry axis and the Rz axis, avoiding interference between axes, and providing reliable support for professional cameras to perform multi-angle, high-precision shooting of key components such as lenses and frames during the high-precision detection process of AR / VR glasses.

[0029] In one embodiment, the telescopic drive mechanism includes an electric push rod or a hydraulic push rod.

[0030] In one embodiment, Figure 4 As shown, the Rx-axis rotation adjustment mechanism 1 also includes: four cams 16, two of which are rotatably mounted on the first side plate 11, and the other two cams 16 are rotatably mounted on the second side plate 11, and two arcuate guide grooves 121 are respectively provided on opposite sides of the camera mounting plate 12, and each cam 16 is disposed in one arcuate guide groove 121; or two of which are rotatably mounted on one inner side wall of the two opposite inner sides of the camera mounting plate 12, and the other two cams 16 are rotatably mounted on the other inner side wall of the two opposite inner sides of the camera mounting plate 12, and two arcuate guide grooves 121 are respectively provided on the sides facing each other of the two side plates 11, and each cam 16 is disposed in one arcuate guide groove 121.

[0031] In this embodiment, the four cams 16 added to the Rx-axis rotation adjustment mechanism 1 cooperate with the arc-shaped guide groove 121, which brings significant technical improvement to the camera rotation adjustment. Regardless of whether the cam 16 is installed on the side plate 11 and the arc-shaped guide groove 121 is opened on the camera mounting plate 12, or the opposite installation arrangement, when the telescopic drive mechanism drives the camera mounting plate 12 to rotate, the cam 16 rolls in the arc-shaped guide groove 121, and converts the linear telescopic motion into the rotational motion of the camera mounting plate 12 around the Rx-axis more accurately. Due to the close cooperation between the cam 16 and the arc-shaped guide groove 121, the camera can be rotated during the rotation process. This effectively limits the possible shaking and offset of the camera mounting plate 12 and the influence of the freedom of rotation of the camera mounting plate 12 around the single cam 16, further ensuring the smooth rotation of the camera 4 around the intersection of the three rotation axes, so that the position of the shooting focus in space does not move in the X, Y or Z axis directions due to the Rx axis adjustment. Compared with the adjustment method without such a structure, the adjustment stability is greatly improved. At the same time, this precise motion conversion and stable structure are combined to avoid additional adjustment errors. Combined with the design that the axes of the three rotation axes intersect at the center point of the lens end face, the adjustment of each axis is independent of each other, which effectively improves the accuracy of the Rx axis direction adjustment.

[0032] In one embodiment, Figure 3 As shown, the Rx-axis rotation adjustment mechanism 1 also includes: a locking bolt 1, which is fixed to the camera mounting plate 12; a locking nut 1, the side plate 11 is provided with a bolt waist groove hole 111, the locking nut 1 is arranged in the bolt waist groove hole 111, and is threadedly connected to the locking bolt 1.

[0033] In this embodiment, locking bolt 1 is secured to camera mounting plate 12. Its threaded rod extends through bolt slot 111 in side plate 11 and is threadedly engaged with locking nut 1. The elongated shape of bolt slot 111 allows locking bolt 1 to move within the slot in a predetermined direction. As camera mounting plate 12 is rotated about the Rx axis, locking bolt 1 moves synchronously with it, without restricting the degree of freedom of adjustment. Once the desired angle is reached, locking nut 1 is tightened, and the head of locking bolt 1 firmly abuts the wall of bolt slot 111, securing camera mounting plate 12 to side plate 11 and preventing rotational displacement due to external vibration or weight.

[0034] In one embodiment, the installation positions of the locking bolt 1 and the bolt waist slot hole 111 can be interchanged and will not be described in detail.

[0035] In one embodiment, Figure 3 As shown, the camera mounting plate 12 is provided with a scale pointer 1; the side plate 11 is provided with an angle scale arc hole 112, and the scale pointer 1 is located in the angle scale arc hole 112.

[0036] In this embodiment, the scale pointer 1 on the camera mounting plate 12 moves synchronously within the angle scale arc hole 112 of the side plate 11 as the camera mounting plate 12 rotates around the Rx axis. The arc trajectory of the angle scale arc hole 112 is concentric with the Rx axis rotation axis, ensuring that the displacement of the scale pointer 1 is linearly corresponding to the rotation angle. The scale values ​​marked on the surface of the angle scale arc hole 112 are evenly distributed with the Rx axis rotation axis as the center. The operator can directly read the rotation angle of the camera mounting plate 12 by the position of the scale pointer 1 in the arc hole, thereby realizing quantitative control of the adjustment process.

[0037] In one embodiment, the positions of the scale pointer 1 and the angle scale arc hole 112 can also be interchanged, which will not be described in detail.

[0038] In one embodiment, Figure 5 As shown, the Ry-axis rotation adjustment mechanism 2 includes: a base plate 21, which is rotatably connected to the Rz-axis rotation adjustment mechanism 3 via a rotating shaft 3 25, and the rotation axis of the rotating shaft 3 25 is the rotation axis of the Ry-axis rotation adjustment mechanism 2; a telescopic drive mechanism 2, which is connected between the base plate 21 and the Rz-axis rotation adjustment mechanism 3, and the telescopic drive mechanism 2 can extend or contract to drive the base plate 21 to rotate about the rotation axis of the rotating shaft 3 25.

[0039] In this embodiment, the Ry-axis rotation adjustment mechanism 2 is rotatably connected to the Rz-axis rotation adjustment mechanism 3 via the base plate 21 via the rotation axis 3 25, and cooperates with the setting of the telescopic drive mechanism 2 to achieve an efficient and stable adjustment function. When the Ry-axis direction needs to be adjusted, the telescopic drive mechanism 2 can directly extend or contract to drive the base plate 21 to rotate around the rotation axis of the rotation axis 3 25. Because the three rotation axis axes are perpendicular to each other and converge at the center point of the camera lens end face, this direct drive method enables the camera to rotate smoothly around the intersection, and the position of the shooting focus in space will not move in the X, Y or Z axis directions due to the adjustment of the Ry axis. Compared with the conventional adjustment mechanism, this design does not require complicated multi-axis linkage auxiliary adjustment, avoiding the need for adjustment after the shooting focus is offset due to adjustment of one axis. The tedious operation of repeated correction of other axes greatly simplifies the adjustment process of the Ry-axis direction and improves operational efficiency. At the same time, the stable rotation connection between the base plate 21 and the rotating shaft 3 25, combined with the precise telescopic control of the telescopic drive mechanism 2, effectively limits the possible shaking and offset of the base plate 21 during the rotation process, and further ensures the smooth rotation of the camera around the intersection of the three rotation axes. This precise motion control and stable structure avoids additional adjustment errors. Combined with the design that the axes of the three rotation axes intersect at the center point of the lens end face, the adjustments between the axes are independent of each other, which significantly improves the accuracy of the Ry-axis direction adjustment, and provides reliable support for professional cameras to accurately shoot and evaluate key components such as lenses and frames from multiple angles in high-precision inspection of AR / VR glasses.

[0040] In one embodiment, Figure 5 As shown, the telescopic drive mechanism 2 includes: an adjusting screw 22, one end of which is rotatably connected to the Rz-axis rotation adjustment mechanism 3; a rotating shaft 23, both ends of which are fixedly connected to the Rx-axis rotation adjustment mechanism 1, and the rotating shaft 23 is provided with a through hole 2, the other end of the adjusting screw 22 passes through the through hole 2, and the outer wall of the adjusting screw 22 is threadedly connected to two adjusting nuts 24, and the two adjusting nuts 24 are located on opposite sides of the through hole 2.

[0041] In this embodiment, the telescopic drive mechanism 2 adopts a combined structure of an adjusting screw 22, a rotating shaft 23 and an adjusting nut 24, which brings significant technical advantages to the Ry-axis rotation adjustment mechanism 2. One end of the adjusting screw 22 is rotatably connected to the Rz-axis rotation adjustment mechanism 3, and the other end passes through the through hole 2 of the rotating shaft 23, and is threadedly connected to the outer wall of the screw through two adjusting nuts 24. When the adjusting nut 24 is rotated, the adjusting screw 22 can perform telescopic movement relative to the rotating shaft 23, thereby driving the base plate 21 to rotate around the rotation axis of the rotating shaft 3 25, thereby realizing adjustment of the Ry-axis direction. This structural design makes the adjustment process more precise and controllable. By screwing the adjustment nut 24, the telescopic length of the adjustment screw 22 can be precisely controlled. Compared with other drive methods, it can achieve micro-adjustments to the Ry-axis rotation angle, effectively improving the adjustment accuracy. At the same time, the threaded fastening effect of the adjustment nut 24 on both sides of the through hole 2 can firmly lock the adjustment screw 22 after it is adjusted into place, preventing the screw from being displaced due to factors such as vibration during the shooting process, ensuring the stability of the camera position, and further ensuring that the position of the shooting focus in space is not offset due to the Ry-axis adjustment. In addition, the telescopic drive mechanism 2 has a simple structure and intuitive operation. Compared with the conventional complex multi-axis linkage adjustment mechanism, the operator only needs to use a simple tool to screw the adjustment nut 24 to complete the adjustment of the Ry-axis direction, without the need for complex multi-axis coordinated operations, which greatly simplifies the adjustment process and improves work efficiency. Combined with a design in which the axes of the three rotating shafts converge at the center point of the camera lens end face, this telescopic drive mechanism II makes the adjustment of the Ry axis independent of the Rx and Rz axes, avoiding interference between axes. This provides a solid technical guarantee for professional cameras to perform multi-angle, high-precision photography of key components such as lenses and frames during high-precision inspection of AR / VR glasses.

[0042] In one embodiment, the second telescopic drive mechanism includes an electric push rod or a hydraulic push rod.

[0043] In one embodiment, the rotating shaft three 25 is coaxially provided with a scale pointer two; the top plate 32 is correspondingly provided with an angle scale, which is used to realize the angle quantitative control of the adjustment process of the Ry-axis rotation adjustment mechanism 2. The specific principle can refer to the scale pointer one and the angle scale arc hole one 112 of the Rx-axis rotation adjustment mechanism 1, and no detailed explanation is required here.

[0044] In one embodiment, Figure 5 As shown, the Ry-axis rotation adjustment mechanism 2 also includes: a position locking block 26, one end of the position locking block 26 is hinged to the Rz-axis rotation adjustment mechanism 3, and the position locking block 26 is provided with a bolt waist groove hole 261; a locking bolt 2, one end of the locking bolt 2 is fixed to the base plate 21, and the other end of the locking bolt 2 passes through the bolt waist groove hole 261, and its outer wall is threadedly connected with a locking nut 2.

[0045] In this embodiment, the locking structure, consisting of a position locking block 26, a second locking bolt, and a second locking nut, added to the Ry-axis rotation adjustment mechanism 2, significantly enhances the overall device. One end of the position locking block 26 is hinged to the Rz-axis rotation adjustment mechanism 3. The second locking bolt penetrates the second bolt slot 261 provided therein and connects to the base plate 21. This locks and adjusts the position of the base plate 21 in conjunction with the second locking nut. Once the Ry-axis direction is adjusted, tightening the second locking nut secures the position locking block 26 against the base plate 21. The engagement of the second bolt slot 261 with the second locking bolt securely locks the base plate 21, effectively preventing unintended rotation of the base plate 21 about the third rotation axis 25 during subsequent filming due to vibration, external forces, and other factors. This ensures that the camera maintains a stable Ry-axis angle position and prevents the focal point from shifting due to displacement of the base plate 21, significantly enhancing the stability and reliability of the entire adjustment mechanism. The locking structure is also convenient and flexible in operation. The design of the second bolt waist slot hole 261 allows the locking bolt 2 to slide in the waist slot hole when adjusting the Ry-axis angle, without hindering the rotational movement of the base plate 21, and the operator can smoothly adjust the angle of the base plate 21 through the telescopic drive mechanism 2. After the angle adjustment is completed, quick locking is achieved by tightening the locking nut 2. There is no need for complicated operating procedures, which simplifies the adjustment steps and improves work efficiency. At the same time, this locking structure cooperates with other components of the Ry-axis rotation adjustment mechanism 2 to further ensure the independence of the adjustment of the three rotation axes. Since the position of the base plate 21 can be accurately locked, when adjusting the Rx-axis or Rz-axis direction, there will be no inter-axis interference due to unexpected changes in the Ry-axis direction, ensuring that the adjustments of each axis do not affect each other, significantly improving the accuracy of the entire camera rotation adjustment device, and providing a strong guarantee for the stable and accurate multi-angle shooting of key components such as lenses and frames by professional cameras in high-precision inspection of AR / VR glasses.

[0046] In one embodiment, the installation positions of the second bolt waist slot hole 261 and the second locking bolt can be interchanged, which will not be described in detail here.

[0047] In one embodiment, Figure 6 As shown, the Rz-axis rotation adjustment mechanism 3 includes: a base 31, the top of the base 31 is rotatably connected to a top plate 32, the top plate 32 is rotatably connected to the Ry-axis rotation adjustment mechanism 2, and the rotation axis of the top plate 32 is the rotation axis of the Rz-axis rotation adjustment mechanism 3; a telescopic drive mechanism three, the telescopic drive mechanism three is connected between the base 31 and the Rz-axis rotation adjustment mechanism 3, and the telescopic drive mechanism three can extend or contract to drive the top plate 32 to rotate about its own rotation axis.

[0048] In this embodiment, the locking structure, consisting of a position locking block 26, a second locking bolt, and a second locking nut, added to the Ry-axis rotation adjustment mechanism 2, significantly enhances the overall device. One end of the position locking block 26 is hinged to the Rz-axis rotation adjustment mechanism 3. The second locking bolt penetrates the second bolt slot 261 provided therein and connects to the base plate 21. This locks and adjusts the position of the base plate 21 in conjunction with the second locking nut. Once the Ry-axis direction is adjusted, tightening the second locking nut secures the position locking block 26 against the base plate 21. The engagement of the second bolt slot 261 with the second locking bolt securely locks the base plate 21, effectively preventing unintended rotation of the base plate 21 about the third rotation axis 25 during subsequent filming due to vibration, external forces, and other factors. This ensures that the camera maintains a stable Ry-axis angle position and prevents the focal point from shifting due to displacement of the base plate 21, significantly enhancing the stability and reliability of the entire adjustment mechanism. The locking structure is also convenient and flexible in operation. The design of the second bolt waist slot hole 261 allows the locking bolt 2 to slide in the waist slot hole when adjusting the Ry-axis angle, without hindering the rotational movement of the base plate 21, and the operator can smoothly adjust the angle of the base plate 21 through the telescopic drive mechanism 2. After the angle adjustment is completed, quick locking is achieved by tightening the locking nut 2. There is no need for complicated operating procedures, which simplifies the adjustment steps and improves work efficiency. At the same time, this locking structure cooperates with other components of the Ry-axis rotation adjustment mechanism 2 to further ensure the independence of the adjustment of the three rotation axes. Since the position of the base plate 21 can be accurately locked, when adjusting the Rx-axis or Rz-axis direction, there will be no inter-axis interference due to unexpected changes in the Ry-axis direction, ensuring that the adjustments of each axis do not affect each other, significantly improving the accuracy of the entire camera rotation adjustment device, and providing a strong guarantee for the stable and accurate multi-angle shooting of key components such as lenses and frames by professional cameras in high-precision inspection of AR / VR glasses.

[0049] In one embodiment, the telescopic drive mechanism three includes: an adjusting screw three 33, one end of which is rotatably connected to the top plate 32; a rotating shaft four 34, which is rotatably connected to the base 31, and the rotating shaft four 34 is provided with a through hole three, and the other end of the adjusting screw three 33 passes through the through hole two, and the outer wall of the adjusting screw three 33 is threadedly connected to two adjusting nuts three 35, and the two adjusting nuts three 35 are located on opposite sides of the through hole three.

[0050] In this embodiment, the telescopic drive mechanism 3 provides a precise and stable driving method for Rz-axis rotation adjustment through the cooperation of the adjusting screw 3 33, the rotating shaft 4 34 and the adjusting nut 3 35. One end of the adjusting screw 3 33 is rotatably connected to the top plate 32, and the other end passes through the through hole 3 of the rotating shaft 4 34, and is axially positioned by two adjusting nuts 3 35. When the adjusting nut 3 35 is screwed, the adjusting screw 3 33 produces a telescopic movement relative to the rotating shaft 4 34, thereby driving the top plate 32 to rotate around its rotation axis to achieve angle adjustment in the Rz-axis direction. The characteristics of the threaded transmission make the adjustment process have good fine-tuning capabilities. By screwing the adjusting nut 3 35, the rotation angle of the top plate 32 can be accurately controlled, meeting the high-precision requirements for small angle changes in AR / VR glasses detection. The tightening effect of the adjusting nut 3 35 on both sides of the through hole 3 can effectively lock the position of the adjusting screw 3 33, prevent angle deviation due to equipment vibration or external force interference, and ensure the stability of the camera during long-term shooting. Compared to traditional multi-axis linkage adjustment methods, this telescopic drive mechanism only requires the operation of the adjustment nut 35 to adjust the Rz axis, eliminating the need for complex coordinated movements and significantly improving adjustment efficiency. Combined with the design where the three rotating axes converge at the center point of the lens end face, Rz axis adjustment does not interfere with the Rx and Ry axes, ensuring the independence of each axis' adjustment and further enhancing the accuracy and reliability of the overall system.

[0051] In one embodiment, the telescopic drive mechanism three includes an electric push rod or a hydraulic push rod.

[0052] In one embodiment, Figure 6 and Figure 7 As shown, the Rz-axis rotation adjustment mechanism 3 further includes: two cams 36 rotatably mounted on the top plate 32 ; the base 31 is provided with two arc-shaped guide grooves 321 , and the cams 36 are disposed in the corresponding arc-shaped guide grooves 321 .

[0053] In this embodiment, cam 2 36 is rotatably mounted on top plate 32 and embedded within arcuate guide groove 2 321 of base 31. The arc center of arcuate guide groove 2 321 coincides with the Rz-axis rotational axis. As top plate 32 rotates about the Rz-axis, cam 2 36 rolls along arcuate guide groove 2 321, precisely constraining the motion trajectory of top plate 32, ensuring its strict rotation along the Rz-axis. This prevents the placement of a single cam 2 36 from interfering with the rotational freedom of top plate 32. This structural design effectively prevents lateral forces generated during the transmission of adjustment screw 3 33, which could cause the top plate 32 to deflect or wobble, further enhancing the stability of rotational adjustment. Furthermore, the design of arcuate guide groove 2 321 aligns with the rotational trajectory of top plate 32, ensuring that cam 2 36 maintains close contact with the groove wall during rolling, reducing backlash and thus eliminating adjustment errors caused by backlash accumulation, significantly improving the accuracy of camera rotational adjustment along the Rz-axis. In addition, the cooperation between the second cam 36 and the second arc-shaped guide groove 321 also enhances the rigidity of the entire mechanism, so that the top plate 32 can still maintain a stable position when frequently adjusted or subjected to external vibrations, further ensuring the reliability and stability of the camera rotation axis adjustment device. When working in conjunction with the Rx-axis and Ry-axis rotation adjustment mechanisms, they jointly ensure that the axes of the three rotation axes precisely intersect at the center point of the lens end face, realizing efficient and accurate three-dimensional rotation adjustment.

[0054] In one embodiment, the installation positions of the second cam 36 and the second arc-shaped guide groove 321 can be interchanged, which will not be described in detail.

[0055] In one embodiment, Figure 6 and Figure 7 As shown, the Rz-axis rotation adjustment mechanism 3 also includes: a locking bolt three, which is fixed to the base 31; a locking nut three, the top plate 32 is provided with a bolt waist groove hole three 322, the locking nut three is arranged in the bolt waist groove hole three 322, and is threadedly connected to the locking bolt three.

[0056] In this embodiment, locking bolt (3) is secured to base (31). Its screw extends through bolt slot (3) 322 in top plate (32) and is threadedly engaged with locking nut (3). The elongated structure of bolt slot (3) 322 extends along the Rz-axis rotation trajectory. As top plate (32) rotates about the Rz-axis, locking bolt (3) slides freely within the slot, unrestricting the degree of freedom during adjustment. Once the desired angle is reached, locking nut (3) is tightened. The head of locking bolt (3) engages tightly with the wall of bolt slot (3) 322, rigidly locking top plate (32) to base (31) through friction, preventing angular deviation due to external vibration or the deadweight of the mechanism.

[0057] In one embodiment, the installation positions of the locking bolt three and the bolt waist slot three 322 can be interchanged and will not be described in detail.

[0058] In one embodiment, Figure 6 and Figure 7 As shown, the base 31 is provided with a scale pointer three; the top plate 32 is provided with an angle scale arc hole two, and the scale pointer three is located in the angle scale arc hole two.

[0059] In this embodiment, the scale pointer three and the angle scale arc hole two are used to realize the angle quantitative control of the adjustment process of the Rz-axis rotation adjustment mechanism 3. The specific principle can refer to the scale pointer one and the angle scale arc hole one 112 of the Rx-axis rotation adjustment mechanism 1, and no detailed explanation is required here.

[0060] In one embodiment, the installation positions of the scale pointer 3 and the angle scale arc hole 2 can be interchanged, which will not be described in detail.

[0061] In one embodiment, the number of the cam and the arc-shaped guide grooves matched with the cam is not specifically limited, and can be two or more.

[0062] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be 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, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0064] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A camera rotation axis adjustment device, characterized in that: include: An Rx-axis rotation adjustment mechanism (1), an Ry-axis rotation adjustment mechanism (2), and an Rz-axis rotation adjustment mechanism (3), wherein one of the three rotation-axis rotation adjustment mechanisms is hinged between the remaining two rotation-axis rotation adjustment mechanisms; The rotation axis of the Rz-axis rotation adjustment mechanism (3), the rotation axis of the Ry-axis rotation adjustment mechanism (2), and the rotation axis of the Rx-axis rotation adjustment mechanism (1) are perpendicular to each other and converge at a point, and the point coincides with the center point of the lens end face of the camera (4).

2. The camera rotation axis adjustment device according to claim 1, wherein: The Rx axis rotation adjustment mechanism (1) comprises: Two side plates (11), a camera mounting plate (12) being rotatably connected between the two side plates (11), the rotation axis of the camera mounting plate (12) being the rotation axis of the Rx-axis rotation adjustment mechanism (1), and the two side plates (11) being fixedly connected to the Ry-axis rotation adjustment mechanism (2); A telescopic drive mechanism 1 is connected between the side plate (11) and the camera mounting plate (12), and the telescopic drive mechanism 1 can extend or contract to drive the camera mounting plate (12) to rotate about its own rotation axis.

3. The camera rotation axis adjustment device according to claim 2, wherein: The telescopic drive mechanism 1 comprises: An adjusting screw rod (13), one end of which is rotatably connected to the camera mounting plate (12); A rotating shaft (14), both ends of which are rotatably connected between the two side plates (11), a through hole (1) is provided on the rotating shaft (14), the other end of the adjusting screw (13) passes through the through hole (1), and the outer wall of the adjusting screw (13) is threadedly connected to two adjusting nuts (15), and the two adjusting nuts (15) are located on opposite sides of the through hole (1).

4. The camera rotation axis adjustment device according to claim 2, wherein: The Rx axis rotation adjustment mechanism (1) further comprises: four cams (16), Two of the cams (16) are rotatably mounted on the first side plate (11), and the other two cams (16) are rotatably mounted on the second side plate (11). Two arc-shaped guide grooves (121) are provided on opposite sides of the camera mounting plate (12), and each cam (16) is disposed in one of the arc-shaped guide grooves (121). Or two of the cams (16) are rotatably mounted on one inner wall of the two inner sides relative to the camera mounting plate (12), and the other two cams (16) are rotatably mounted on the other inner wall of the two inner sides relative to the camera mounting plate (12), and two arc-shaped guide grooves (121) are provided on the sides of the two side plates (11) facing each other, and each cam (16) is arranged in one of the arc-shaped guide grooves (121).

5. The camera rotation axis adjustment device according to claim 2, wherein: The Rx axis rotation adjustment mechanism (1) further comprises: A locking bolt 1, wherein the locking bolt 1 is fixed to the camera mounting plate (12); A locking nut is provided on the side plate (11) with a bolt waist slot hole (111), and the locking nut is arranged in the bolt waist slot hole (111) and is threadedly connected to the locking bolt.

6. The camera rotation axis adjustment device according to claim 2, wherein: The camera mounting plate (12) is provided with a scale pointer 1; The side plate (11) is provided with an angle scale arc hole (112), and the scale pointer (1) is located in the angle scale arc hole (112).

7. The camera rotation axis adjustment device according to claim 1, wherein: The Ry-axis rotation adjustment mechanism (2) comprises: A bottom plate (21), the bottom plate (21) is rotatably connected to the Rz-axis rotation adjustment mechanism (3) via a third rotation shaft (25), and the rotation axis of the third rotation shaft (25) is the rotation axis of the Ry-axis rotation adjustment mechanism (2); The telescopic drive mechanism 2 is connected between the base plate (21) and the Rz-axis rotation adjustment mechanism (3). The telescopic drive mechanism 2 can extend or contract to drive the base plate (21) to rotate about the rotation axis of the rotating shaft 3 (25).

8. The camera rotation axis adjustment device according to claim 7, wherein: The telescopic drive mechanism 2 comprises: A second adjusting screw (22), one end of which is rotatably connected to the Rz-axis rotation adjustment mechanism (3); A second rotating shaft (23), both ends of which are fixedly connected to the Rx-axis rotation adjustment mechanism (1), a second through hole is provided on the second rotating shaft (23), the other end of the second adjusting screw (22) passes through the second through hole, and the outer wall of the second adjusting screw (22) is threadedly connected to two second adjusting nuts (24), and the two second adjusting nuts (24) are located on opposite sides of the second through hole.

9. The camera rotation axis adjustment device according to claim 7, wherein: The Ry-axis rotation adjustment mechanism (2) further comprises: A position locking block (26), one end of the position locking block (26) is hinged to the Rz-axis rotation adjustment mechanism (3), and the position locking block (26) is provided with a second bolt waist slot hole (261); A locking bolt 2, one end of which is fixed to the base plate (21), and the other end of which passes through a second bolt waist slot hole (261), and a locking nut 2 is threadedly connected to the outer wall thereof.

10. The camera rotation axis adjustment device according to claim 1, wherein: The Rz-axis rotation adjustment mechanism (3) comprises: A base (31), the top of the base (31) is rotatably connected to a top plate (32), the top plate (32) is connected to the Ry-axis rotation adjustment mechanism (2), and the rotation axis of the top plate (32) is the rotation axis of the Rz-axis rotation adjustment mechanism (3); A telescopic drive mechanism three is connected between the base (31) and the Rz-axis rotation adjustment mechanism (3), and the telescopic drive mechanism three can extend or contract to drive the top plate (32) to rotate about its own rotation axis.

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