Optical axis adjusting structure and distance measuring equipment

Abstract

The utility model discloses an optical axis adjusting structure and distance measuring equipment, and relates to the technical field of instrument measurement, the optical axis adjusting structure comprises a fixing seat, an adjusting frame, an optical module and a fixing assembly, the fixing seat is provided with a mounting cavity, and the mounting cavity is provided with a first curved surface; the adjusting frame is arranged in the mounting cavity and provided with a second curved surface matched with the first curved surface, and a gap for movable adjustment of the adjusting frame is reserved between the second curved surface and the first curved surface; the optical module is arranged on the adjusting frame, and the optical module adjusts the position of the optical axis through sliding of the second curved surface on the first curved surface; the fixing assembly is arranged on the adjusting frame and connected with the fixing base so as to fix the optical axis position of the optical module. According to the optical axis adjusting structure, multi-degree-of-freedom adjustment of the optical axis in a three-dimensional space is achieved, and the defect that in the prior art, optical axis adjustment is only limited to two degrees of freedom in the same plane is effectively overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of instrument measurement, in particular to an optical axis adjusting structure and a distance measuring device. BACKGROUND

[0002] The optical axis adjusting structure is used to adjust and fix the optical axis in the distance measuring device, so as to realize the accurate alignment between the distance measuring module and the lens module.

[0003] Although the existing optical axis adjusting structure can realize the adjustment of the optical axis to a certain extent, it usually has some limitations. The optical axis adjusting mechanism can only adjust the optical axis in one plane, for example, by adjusting the front, back, left and right four ejection structures to realize the calibration of two optical axes, it is necessary to ensure that the two optical axes are absolutely parallel in the axial direction. Therefore, the freedom of optical axis adjustment is limited to two degrees of freedom in the same plane, and if the two optical axes do not meet the parallel prerequisite, it is difficult to realize the adjustment of the optical axis. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide an optical axis adjusting structure, which realizes the multi-degree-of-freedom adjustment of the optical axis in three-dimensional space, effectively overcoming the defect that the optical axis adjustment in the prior art is limited to two degrees of freedom in the same plane. Another purpose of the present application is to provide a distance measuring device.

[0005] To achieve the above-mentioned purpose, the present application provides an optical axis adjusting structure, comprising:

[0006] A fixing seat is provided with a mounting cavity, and the mounting cavity has a first curved surface;

[0007] An adjusting frame is arranged in the mounting cavity, and the adjusting frame is provided with a second curved surface matched with the first curved surface, and a gap is left between the second curved surface and the first curved surface for the adjusting frame to adjust;

[0008] An optical module is arranged in the adjusting frame, and the optical module adjusts the position of the optical axis by sliding on the first curved surface through the second curved surface;

[0009] A fixing assembly is arranged in the adjusting frame, and the fixing assembly is connected with the fixing seat to fix the position of the optical axis of the optical module.

[0010] In some embodiments, the first curved surface comprises a first end support surface and a second end support surface, the second curved surface comprises a first end adjusting surface and a second end adjusting surface, the first end adjusting surface is matched with the first end support surface, and the second end adjusting surface is matched with the second end support surface.

[0011] In some embodiments, the first end support surface and the second end support surface are two spherical surfaces on a support sphere, the first end adjustment surface and the second end adjustment surface are two spherical surfaces on an adjustment sphere, and the diameter of the support sphere is larger than the diameter of the adjustment sphere.

[0012] In some embodiments, the surface of the fixing base is provided with a first boss and a second boss, the first boss is provided with a first end support surface, the second boss is provided with a second end support surface, and the first boss and the second boss together form the mounting cavity.

[0013] In some embodiments, the fixing component includes:

[0014] The pressure block is connected to the fixed base;

[0015] An elastic pad is disposed between the pressure block and the fixed base, and provides Z-axis movement of the optical module through the elastic pad.

[0016] In some embodiments, the elastic pad is disposed around the adjusting frame, and the elastic pad and the adjusting frame are pressed between the pressure block and the fixed base; and / or,

[0017] The adjustment frame is provided with positioning wings on its periphery, and the elastic pad is provided with positioning grooves that cooperate with the positioning wings.

[0018] In some embodiments, the fixing component further includes:

[0019] An adjusting member is provided in the through hole of the pressure block and the elastic pad, and the adjusting member is connected to the fixed base through the through hole.

[0020] In some embodiments, the adjusting members are provided in two groups. The first group of adjusting members is symmetrically arranged on both sides of the second axis along the first axis, and the second group of adjusting members is symmetrically arranged on both sides of the first axis along the second axis. The first axis and the second axis are perpendicular.

[0021] In some embodiments, the fixed base is provided with an assembly frustum, the outer circle of which is an assembly surface for mounting the optical axis adjustment structure in the ranging device.

[0022] This application also provides a ranging device, including a light beam module and the aforementioned optical axis adjustment structure. The optical axis position of the optical module is adjusted by the optical axis adjustment structure to achieve optical axis calibration between the light beam module and the optical module.

[0023] Compared to the aforementioned background technology, the optical axis adjustment structure provided in this application mainly includes a fixed base, an adjustment frame, an optical module, and a fixing component. The fixed base has a mounting cavity with a first curved surface. The adjustment frame is disposed in the mounting cavity and has a second curved surface that mates with the first curved surface. A gap is left between the second curved surface and the first curved surface for the adjustment frame to move and adjust. The optical module is disposed on the adjustment frame, and the optical module adjusts the optical axis position by sliding the second curved surface on the first curved surface. The fixing component is disposed on the adjustment frame and is connected to the fixed base to fix the optical axis position of the optical module.

[0024] In traditional optical axis adjustment mechanisms, the adjustment of the optical axis is usually limited to a single plane. The calibration of the two optical axes can only be achieved by adjusting the ejector structure in four directions: front, back, left, and right. This requires that the two optical axes must be absolutely parallel in the axial direction, which greatly limits the degree of freedom of adjustment.

[0025] To address this technical problem, this technical solution provides an optical axis adjustment structure. This design allows the adjustment frame to slide freely in the mounting cavity during the adjustment process. Before the fixing components are fixed, the adjustment frame is in a floating state, which can realize precise adjustment of the optical module in multiple directions, including up to five degrees of freedom other than Z-axis movement.

[0026] The optical module is mounted on an adjustment frame, and the optical axis position is adjusted by sliding the second curved surface on the first curved surface. This adjustment method not only breaks the limitation of traditional technology that the optical axis can only be adjusted in a single plane, but also provides more degrees of freedom for adjustment, allowing the optical axis to be precisely adjusted in three-dimensional space to adapt to different measurement needs.

[0027] The fixing component is mounted on the adjustment frame and connected to the fixing base to fix the optical axis position of the optical module. Once the optical axis of the optical module is adjusted to the ideal position, the fixing component can ensure the stability of this position and prevent displacement or change caused by external factors.

[0028] Based on the above structural and process descriptions, it can be seen that the optical axis adjustment structure has at least the following beneficial effects: the optical axis adjustment structure realizes multi-degree-of-freedom adjustment of the optical axis in three-dimensional space, effectively overcoming the defect of the existing technology where the optical axis adjustment is limited to two degrees of freedom in the same plane. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the optical axis adjustment structure provided in the embodiments of this application;

[0031] Figure 2 This is an exploded view of the optical axis adjustment structure provided in the embodiments of this application;

[0032] Figure 3 A schematic diagram of the mounting base provided in the embodiments of this application;

[0033] Figure 4 A schematic diagram of the adjustment frame provided in an embodiment of this application;

[0034] Figure 5 A schematic diagram of the adjustment frame, optical module, and fixing components provided in the embodiments of this application;

[0035] Figure 6 An exploded view of the adjustment frame, optical module, and fixing assembly provided in the embodiments of this application;

[0036] Figure 7 This is a schematic diagram of an optical module provided in an embodiment of this application.

[0037] in:

[0038] Fixed base 1, mounting cavity 11, first curved surface 111, first end support surface 1111, second end support surface 1112, first boss 12, second boss 13, assembly frustum 14.

[0039] Adjustment frame 2, second curved surface 21, first end adjustment surface 211, second end adjustment surface 212, positioning wing 23.

[0040] Optical Module 3

[0041] Fixed component 4, pressure block 41, elastic pad 42, positioning groove 421, adjusting component 43. Detailed Implementation

[0042] 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, and 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.

[0043] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Please refer to Figure 1 and Figure 2 ,in, Figure 1This is a schematic diagram of the optical axis adjustment structure provided in the embodiments of this application. Figure 2 This is an exploded view of the optical axis adjustment structure provided in the embodiments of this application.

[0045] In a first specific embodiment, the optical axis adjustment structure provided in this application mainly includes a fixed base 1, an adjustment frame 2, an optical module 3, and a fixing component 4.

[0046] The mounting base 1 has a mounting cavity 11, which has a first curved surface 111. The adjusting frame 2 is located in the mounting cavity 11 and has a second curved surface 21 that mates with the first curved surface 111. A gap is left between the second curved surface 21 and the first curved surface 111 for the adjusting frame 2 to move and adjust. The optical module 3 is located on the adjusting frame 2 and its optical axis position is adjusted by sliding the second curved surface 21 on the first curved surface 111. The fixing component 4 is located on the adjusting frame 2 and is connected to the mounting base 1 to fix the optical axis position of the optical module 3.

[0047] In traditional optical axis adjustment mechanisms, the adjustment of the optical axis is usually limited to a single plane. The calibration of the two optical axes can only be achieved by adjusting the ejector structure in four directions: front, back, left, and right. This requires that the two optical axes must be absolutely parallel in the axial direction, which greatly limits the degree of freedom of adjustment.

[0048] To address this technical problem, this technical solution provides an optical axis adjustment structure. This design allows the adjustment frame 2 to slide freely in the mounting cavity 11 during the adjustment process. Before the fixing component 4 is fixed, the adjustment frame 2 is in a floating state, which can realize precise adjustment of the optical module 3 in multiple directions, including up to five degrees of freedom other than Z-axis movement.

[0049] The optical module 3 is mounted on the adjustment frame 2, and the optical axis position is adjusted by sliding the second curved surface 21 on the first curved surface 111. This adjustment method not only breaks the limitation of the optical axis being able to be adjusted in a single plane in traditional technology, but also provides more degrees of freedom for adjustment, allowing the optical axis to be precisely adjusted in three-dimensional space to adapt to different measurement needs.

[0050] The fixing component 4 is mounted on the adjusting frame 2 and connected to the fixing base 1, and is used to fix the optical axis position of the optical module 3. Once the optical axis of the optical module 3 is adjusted to the ideal position, the fixing component 4 can ensure the stability of this position and prevent displacement or change caused by external factors.

[0051] Based on the above structural and process descriptions, it can be seen that the optical axis adjustment structure has at least the following beneficial effects: the optical axis adjustment structure realizes multi-degree-of-freedom adjustment of the optical axis in three-dimensional space, effectively overcoming the defect of the existing technology where the optical axis adjustment is limited to two degrees of freedom in the same plane.

[0052] It is important to note that when installing the fixed base 1 and the adjusting bracket 2, a gap should be left at an appropriate position between the adjusting bracket 2 and the mounting cavity 11. For example, the adjusting bracket 2 and the mounting cavity 11 are connected by the second curved surface 21 and the first curved surface 111. While there is contact between them at some points, a gap should be left at other points to allow space for the adjusting bracket 2 to move within the mounting cavity 11. Additionally, with... Figure 2 For example, the second curved surface 21 is located on the side of the adjustment frame 2. In addition to the contact position and the gap position between the second curved surface 21 and the first curved surface 111, the bottom surface of the adjustment frame 2 and the mounting cavity 11 are also set to leave a gap, thereby providing the adjustment frame 2 with room for movement and avoiding the problem of immobility caused by the bottom surface of the adjustment frame 2 fitting with the mounting cavity 11.

[0053] Please refer to Figure 3 and Figure 4 ,in, Figure 3 This is a schematic diagram of the mounting bracket provided in an embodiment of this application. Figure 4 This is a schematic diagram of the adjustment frame provided in an embodiment of this application.

[0054] In some embodiments, the first curved surface 111 includes a first end support surface 1111 and a second end support surface 1112, and the second curved surface 21 includes a first end adjustment surface 211 and a second end adjustment surface 212. The first end adjustment surface 211 cooperates with the first end support surface 1111, and the second end adjustment surface 212 cooperates with the second end support surface 1112.

[0055] In this embodiment, with Figure 3 Taking the orientation as an example, the first end support surface 1111 can be regarded as the front surface inside the mounting cavity 11, and the second end support surface 1112 can be regarded as the rear surface inside the mounting cavity 11. Correspondingly, the first end adjustment surface 211 is the front end surface of the adjustment frame 2, and the second end adjustment surface 212 is the rear end surface of the adjustment frame 2.

[0056] This design ensures that the adjustment frame 2 has support and adjustment at both ends during adjustment, significantly improving the stability of the entire structure. Specifically, the cooperation between the first end adjustment surface 211 and the first end support surface 1111, and the cooperation between the second end adjustment surface 212 and the second end support surface 1112, ensures that the adjustment frame 2 can be effectively positioned and supported at both ends. This end-to-end design not only provides accurate positioning and adjustment but also enables multi-degree-of-freedom adjustment in three-dimensional space.

[0057] In some embodiments, the first end support surface 1111 and the second end support surface 1112 are two spherical surfaces on the support sphere, and the first end adjustment surface 211 and the second end adjustment surface 212 are two spherical surfaces on the adjustment sphere, and the diameter of the support sphere is larger than the diameter of the adjustment sphere.

[0058] In this embodiment, the design of the optical axis adjustment structure further enhances the adjustment capability of the adjustment frame 2 within the mounting cavity 11. The first end support surface 1111 and the second end support surface 1112 are designed as two spherical surfaces on a supporting sphere, while the first end adjustment surface 211 and the second end adjustment surface 212 are two spherical surfaces on an adjustment sphere. This design means that the spatial shape of the inner surface of the mounting cavity 11 is spherical, and the spatial shape of the outer surface of the adjustment frame 2 is also spherical, because the diameter of the sphere in the mounting cavity 11 is larger than the diameter of the sphere in the adjustment frame 2, thus enabling the sliding adjustment of the adjustment frame 2 within the mounting cavity 11.

[0059] With this design, the adjustment frame 2 can achieve a floating-like effect within the mounting cavity 11, allowing for fine-tuning in multiple directions. Due to the large diameter of the supporting sphere, the adjustment frame 2 can move and rotate within a wide range within the mounting cavity 11.

[0060] The adjustment frame 2 can be adjusted in five degrees of freedom, which provides more precise control over the optical axis of the optical module 3; Reference Figure 1 The XYZ coordinate axes of the optical axis are adjustable in five degrees of freedom, excluding Z-axis movement. This multi-degree-of-freedom adjustment capability allows the optical axis adjustment structure to adapt to more complex alignment requirements, especially when the optical axes are not parallel or when precise adjustments are needed in three-dimensional space. Therefore, this design not only improves the flexibility of adjustment but also enhances the accuracy and reliability of the ranging device, effectively overcoming the shortcomings of existing technologies where optical axis adjustment is limited to only two degrees of freedom in a single plane.

[0061] It should be noted that the sphere in this embodiment is a special type of curved surface. Considering the convenience of design and processing, the sphere is preferred as the curved surface in this embodiment. Of course, other curved surface types can also achieve the technical effect of multi-degree-of-freedom adjustment, and should also fall within the scope of this application.

[0062] In addition to this embodiment, the first end support surface 1111 and the second end support surface 1112 can also be in the case where they do not share a common center. The first end adjustment surface 211 and the second end adjustment surface 212 are also in the case where they do not share a common center. In this case, the first curved surface 111 and the second curved surface 21 will cooperate in an eccentric manner, which can also achieve the effect of multi-degree-of-freedom adjustment.

[0063] Please refer to Figures 5 to 7 ,in, Figure 5 This is a schematic diagram of the adjustment frame, optical module, and fixing components provided in an embodiment of this application. Figure 6 This is an exploded view of the adjustment frame, optical module, and fixing assembly provided in the embodiments of this application. Figure 7 This is a schematic diagram of an optical module provided in an embodiment of this application.

[0064] In some embodiments, the fixing component 4 includes:

[0065] Pressure block 41 is connected to fixed base 1;

[0066] An elastic pad 42 is disposed between the pressure block 41 and the fixed base 1, and provides Z-axis movement of the optical module 3 through the elastic pad 42.

[0067] In this embodiment, the fixing component 4 is designed to provide a stable and adjustable fixing method to ensure that the optical axis position of the optical module 3 can be firmly fixed after being adjusted to the ideal state. The fixing component 4 includes a pressure block 41 and an elastic pad 42, wherein the pressure block 41 is connected to the fixing base 1, and the elastic pad 42 is disposed between the pressure block 41 and the fixing base 1.

[0068] This design allows for cushioning and fine-tuning capabilities through the elastic properties of the elastic pad 42 when fixing the optical module 3, as well as compensating for locking errors of the adjusting member 43. The elastic pad 42 can absorb minor deformations caused by temperature changes or mechanical stress, thereby protecting the optical module 3 from damage while ensuring the accuracy and stability of the optical axis position. By adjusting the hardness and thickness of the elastic pad 42, the fixing force can be precisely controlled to adapt to different fixing requirements. In addition, since the Z-axis movement of the optical module 3 is provided through the elastic pad 42, combined with the five-degree-of-freedom adjustment capability of the adjusting bracket 2 in the mounting cavity 11, it completes the six-degree-of-freedom adjustment.

[0069] In some embodiments, the elastic pad 42 is arranged around the adjustment frame 2, and the elastic pad 42 and the adjustment frame 2 are pressed between the pressure block 41 and the fixed base 1.

[0070] In this embodiment, the elastic pad 42 is arranged around the adjusting frame 2, a design that facilitates the assembly process. Because the elastic pad 42 surrounds the adjusting frame 2, it can be placed directly between the pressure block 41 and the fixing seat 1 along with the adjusting frame 2. This configuration simplifies the assembly steps, as the adjusting frame 2 and the elastic pad 42 can be positioned correctly in one go without separate installation.

[0071] Furthermore, the surrounding design of the elastic pads 42 helps to reduce the axial height of the entire optical axis adjustment structure. Since the elastic pads 42 are evenly distributed around the adjustment frame 2, they can provide the necessary elastic support without significantly increasing the height. This means the entire structure can be designed to be more compact, reducing the axial height of the optical module 3, thus making the entire ranging device smaller and lighter.

[0072] It should be noted that, in its natural state, the surface of the elastic pad 42 is higher than the surface of the adjusting frame 2, so that the pressure block 41 can directly contact the elastic pad 42. Of course, due to the elastic effect of the elastic pad 42, when the elastic pad 42 is compressed, the pressure block 41 may directly contact the adjusting frame 2.

[0073] In some embodiments, the periphery of the adjustment frame 2 is provided with a positioning wing 23, and the elastic pad 42 is provided with a positioning groove 421 that cooperates with the positioning wing 23.

[0074] In this embodiment, the adjustment frame 2 is designed with positioning wings 23 on its periphery. This structural feature allows the adjustment frame 2 to be accurately positioned during assembly. The positioning wing 23 is similar to a raised edge, which forms a clear reference point on the adjustment frame 2, helping to ensure the correct position of the adjustment frame 2 during installation.

[0075] The elastic pad 42 is provided with a positioning groove 421 that mates with the positioning wing 23. This design allows the elastic pad 42 to be precisely aligned with the adjustment frame 2 during installation. The positioning groove 421 acts as a recess to receive the positioning wing 23, ensuring that the elastic pad 42 does not shift or rotate during installation. This mating method improves the assembly accuracy and reliability of the entire optical axis adjustment structure.

[0076] In some embodiments, both the pressure block 41 and the elastic pad 42 are provided with through holes; the fixing assembly 4 further includes:

[0077] Adjusting element 43 is provided in the through hole of pressure block 41 and elastic pad 42, and adjusting element 43 is connected to fixed base 1.

[0078] In this embodiment, both the pressure block 41 and the elastic pad 42 are designed with through holes, which allow the adjusting member 43 of the fixing assembly 4 to be installed and pass through. The adjusting member 43 is a key part of the fixing assembly 4. It is connected to the fixing base 1 through the through holes, thereby fixing the position of the optical axis of the optical module 3.

[0079] This design allows for fine-tuning between the pressure block 41 and the elastic pad 42. The adjusting element 43, which can be a screw, bolt, or other type of fastener, can adjust the position of the pressure block 41 through a through-hole to ensure precise alignment of the optical module 3. The through-hole design of the elastic pad 42 allows it to accommodate different adjustment needs, while its elasticity helps to cushion pressure during installation, protecting the optical module 3 from damage.

[0080] By adjusting the adjusting member 43, the position of the pressure block 41 can be subtly changed, thereby affecting the optical axis position of the optical module 3. Once the desired alignment is achieved, the adjusting member 43 can be locked to fix the positions of the pressure block 41 and the optical module 3, ensuring long-term stability and reliability. This design provides a flexible and precise adjustment and fixing mechanism, enabling the optical axis adjustment structure to adapt to different installation conditions and requirements, improving the adjustment accuracy and operational convenience of the ranging device.

[0081] Regarding the adjustment principle of the optical axis adjustment structure, one can imagine that the adjustment frame 2 and the optical module 3 are a whole. This whole is in a floating state within the framework composed of the fixed base 1 and the fixed component 4. Therefore, this whole can achieve multi-degree-of-freedom adjustment of the optical axis through spherical mating. Combined with the elastic effect of the elastic pad 42 in the fixed component 4, the Z-axis movement provided by the elastic pad 42, in conjunction with spherical adjustment, achieves adjustment of six degrees of freedom of the optical axis. After the adjustment is completed, the whole is fixed by the pressure block 41 and the adjustment component 43 in the fixed component 4, thus fixing the optical axis. Here, spherical mating does not refer to the complete contact or separation of the two spheres, but rather to a combination of partial contact and partial separation, resulting in a floating mating method in which the adjustment frame 2 floats within the mounting cavity 11 of the fixed base 1.

[0082] It should be noted that this embodiment does not limit the specific adjustment method of the optical axis adjustment structure. For example, it can be an adjustment method that directly controls the movement of the adjustment frame 2 and the optical module 3 as a whole, or it can be an adjustment method that uses the adjustment component 43, taking the adjustment component 43 as a bolt as an example, and indirectly controls the movement of the adjustment frame 2 and the optical module 3 as a whole by turning the adjustment component 43. Both of these methods should be included in this embodiment.

[0083] Optionally, the elastic pad 42 is made of soft rubber.

[0084] In some cases, the adjustment frame 2 and the optical module 3 are fixed together by fasteners.

[0085] Alternatively, the adjustment frame 2 may have an internal support beam with holes for fasteners to secure the adjustment frame 2 to the optical module 3.

[0086] In some embodiments, the adjusting members 43 are provided in two sets. The first set of adjusting members 43 is symmetrically arranged on both sides of the second axis along the first axis, and the second set of adjusting members 43 is symmetrically arranged on both sides of the first axis along the second axis. The first axis and the second axis are perpendicular.

[0087] It should be noted that although the structure shown in the figure may not be symmetrical, the symmetrical form used in this embodiment is a better technical solution.

[0088] In this embodiment, the adjustment members 43 are designed in a two-set configuration to achieve precise control of the adjustment frame 2 and the optical module 3. The first set of adjustment members 43 is arranged along the first axis ( Figure 1 The X-axis is symmetrically placed on the second axis (in the middle). Figure 1 The first set of adjustment members 43 is located on both sides of the first axis (X-axis), while the second set of adjustment members 43 is symmetrically arranged on both sides of the first axis (X-axis) along the second axis (Y-axis). This arrangement forms a cross configuration, allowing the adjustment members 43 to provide adjustment in two perpendicular directions.

[0089] The cross-shaped adjustment method provides a simpler and more convenient way to adjust the position of the adjustment bracket 2. By setting adjustment components 43 on the X and Y axes respectively, the position of the adjustment bracket 2 in two vertical directions can be adjusted independently or simultaneously, thereby achieving precise adjustment. This design makes the adjustment process more intuitive and easier to operate because the adjustment in each direction is independently controlled, reducing possible errors during the adjustment process.

[0090] This configuration improves the flexibility and precision of adjustment. By symmetrically arranging the adjustment members 43 in two vertical directions, it can be ensured that the adjustment of the adjustment frame 2 is balanced in different directions, which helps to maintain the stability of the optical axis position of the optical module 3 during the adjustment process. This symmetrical adjustment mechanism also helps to reduce tilting or offset caused by improper adjustment, ensuring precise alignment of the optical axis.

[0091] In some embodiments, the surface of the fixing base 1 is provided with a first boss 12 and a second boss 13. The first boss 12 is provided with a first end support surface 1111, and the second boss 13 is provided with a second end support surface 1112. The first boss 12 and the second boss 13 surround each other to form a mounting cavity 11.

[0092] In this embodiment, the design of the fixing base 1 includes two important structural features: a first boss 12 and a second boss 13. These two bosses not only enhance the mechanical strength of the fixing base 1, but their shape and layout also play a crucial role in the stability and adjustment capability of the entire optical axis adjustment structure.

[0093] The design of the first boss 12 and the second boss 13 ensures that the surfaces of the mounting base 1 have the same curvature, namely the first end support surface 1111 and the second end support surface 1112. This curved surface design allows the corresponding adjustment surfaces on the adjustment frame 2 to engage with them, enabling sliding and adjustment in multiple directions. The first boss 12 and the second boss 13 enclose and form a mounting cavity 11, which is the core area for the installation and adjustment of the adjustment frame 2 and the optical module 3.

[0094] The mounting cavity 11 provides a stable platform for the adjustment frame 2 and is also the basis for the adjustment frame 2 to perform multi-degree-of-freedom adjustments. The design of the first boss 12 and the second boss 13 allows the adjustment frame 2 to move freely within the mounting cavity 11 while maintaining contact with the first end support surface 1111 and the second end support surface 1112, ensuring accuracy and reliability during the adjustment process.

[0095] Furthermore, the presence of the first boss 12 and the second boss 13 helps protect the adjustment frame 2 and the optical module 3 from external interference. For example, when subjected to impact or vibration, the bosses can provide additional support and reduce the impact on sensitive components. This design also makes the entire optical axis adjustment structure more compact while providing sufficient space for fine adjustments.

[0096] In some embodiments, the mounting base 1 is provided with a mounting frustum 14, the outer circle of which is a mounting surface for installing the optical axis adjustment structure in the ranging device.

[0097] like Figure 3 As shown, a first boss 12 and a second boss 13 are provided on the surface of the assembly frustum 14. This surface of the assembly frustum 14 is also the direction for mounting the adjustment bracket 2, the optical module 3 and the fixing component 4.

[0098] In this embodiment, the design of the mounting base 1 incorporates a truncated cone 14, whose outer circular surface is specially designed as a mounting surface to facilitate the installation of the optical axis adjustment structure within the ranging device. This design enables the optical axis adjustment structure to be precisely aligned and fixed with other components of the ranging device.

[0099] The mounting frustum 14 provides a clear installation reference point, ensuring the alignment accuracy of the optical axis adjustment structure during installation. This outer circular surface, serving as the mounting surface, mates with the corresponding inner circular surface on the ranging device, enabling quick and accurate installation. This design simplifies the installation process, as ensuring the correct positioning of the entire optical axis adjustment structure is achieved simply by ensuring that the outer circular surface of the mounting frustum 14 matches the inner circular surface of the ranging device.

[0100] Furthermore, the design of the mounting frustum 14 also considers the stability and reliability of the installation. By providing a uniform contact surface, the mounting frustum 14 helps to distribute stress during the installation process, reducing local pressure concentration and thus protecting the optical axis adjustment structure and the ranging device from damage. This design also helps to improve the overall stability and durability of the ranging device.

[0101] This application also provides a ranging device, including a light beam module and the aforementioned optical axis adjustment structure. The optical axis position of the optical module 3 is adjusted by the optical axis adjustment structure to achieve optical axis calibration between the light beam module and the optical module 3.

[0102] The ranging device should have all the beneficial effects of the aforementioned optical axis adjustment structure.

[0103] In this embodiment, the design of the ranging device allows for fine adjustment of the optical module 3 via an optical axis adjustment structure, ensuring that the beam of the light module is aligned with the optical axis of the optical module 3. This is achieved through the coordinated operation of the mounting base 1, the adjustment frame 2, the optical module 3, and the fixing component 4 in the aforementioned optical axis adjustment structure.

[0104] In this configuration, the optical axis calibration of the light module and optical module 3 is crucial for ensuring the accuracy and reliability of the ranging device. The multi-degree-of-freedom adjustment capability provided by the optical axis adjustment structure allows the ranging device to adapt to different operating conditions and environments, ensuring precise optical axis alignment under various circumstances.

[0105] In one specific embodiment, the usage process of the optical axis adjustment structure in the ranging device is described as follows.

[0106] In this technical solution, the optical axis adjustment structure is designed to achieve precise optical axis alignment between the light module and the optical module 3 in the ranging device. The process begins with mounting the optical module 3 onto the adjustment frame 2. The adjustment frame 2 has two adjustment surfaces, a first end adjustment surface 211 and a second end adjustment surface 212, which respectively mate with the first end support surface 1111 and the second end support surface 1112 within the mounting cavity 11 on the fixed base 1. This mating allows the adjustment frame 2 to be fine-tuned in multiple directions within three-dimensional space to achieve precise position adjustment of the optical axis of the optical module 3.

[0107] During the adjustment process, the optical axis position of the optical module 3 can be finely adjusted by moving the adjustment surface on the sliding adjustment bracket 2 on the curved surface of the fixed base 1. This step utilizes the spherical fit between the adjustment bracket 2 and the fixed base 1, where the first end adjustment surface 211 and the second end adjustment surface 212 are both spherical, and their centers do not coincide. This provides additional degrees of freedom beyond the limitations of traditional planar surfaces, enabling the optical module 3 to be adjusted with multiple degrees of freedom in three-dimensional space.

[0108] Once the optical axis position of the optical module 3 is adjusted to the ideal state, the fixing component 4 is used to fix this position. The fixing component 4 includes a pressure block 41, an elastic pad 42, and an adjusting component 43. The pressure block 41 is connected to the fixing base 1, while the elastic pad 42 is disposed between the pressure block 41 and the fixing base 1, serving as a buffer and for fine adjustment. The elastic pad 42 surrounds the adjusting frame 2 and engages with the positioning wing 23 on the adjusting frame 2 through its positioning groove 421, ensuring that the position of the adjusting frame 2 remains accurate during the fixing process.

[0109] Adjustment member 43 passes through the through holes of pressure block 41 and elastic pad 42 and is connected to fixing base 1 to finally lock the position of pressure block 41 and optical module 3. The adjustment member 43 is designed with two sets of configurations, one set symmetrically arranged along the X-axis and the other set symmetrically arranged along the Y-axis. This cross-shaped configuration provides independent adjustment capability in two vertical directions, further ensuring that the optical axis position of optical module 3 can be accurately fixed.

[0110] Finally, the mounting frustum 14 on the mounting base 1 provides a mounting surface for installing the optical axis adjustment structure in the ranging device. The outer circular surface of the mounting frustum 14 mates with the inner circular surface of the ranging device, ensuring that the optical axis adjustment structure can be accurately installed in the ranging device.

[0111] Through the above steps, this technical solution provides a precise, flexible, and reliable optical axis adjustment method, enabling precise alignment between the optical axis of the ranging device's optical module and the optical module 3, thereby improving the performance and measurement accuracy of the ranging device. This optical axis adjustment structure is not only suitable for various operating conditions and environments, but also adaptable to different measurement needs, ensuring that the ranging device can achieve precise optical axis alignment under all circumstances.

[0112] It should be noted that this embodiment does not limit the light form of the light module, including visible light and infrared light, which should also be within the scope of this embodiment.

[0113] Optionally, the light module is an infrared module, the optical axis of the infrared module is the infrared optical axis, and the optical axis of the optical module 3 is the ranging optical axis. In this embodiment, the position of the infrared optical axis and the ranging optical axis are calibrated.

[0114] For example, the ranging device is an infrared rangefinder.

[0115] It should be noted that many of the components mentioned in this application are general standard parts or components known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0116] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0117] The optical axis adjustment structure and ranging device provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An optical axis adjustment structure, characterized in that, include: The fixed base (1) is provided with a mounting cavity (11), and the mounting cavity (11) has a first curved surface (111). An adjustment frame (2) is provided in the mounting cavity (11). The adjustment frame (2) is provided with a second curved surface (21) that cooperates with the first curved surface (111). A gap is left between the second curved surface (21) and the first curved surface (111) for the adjustment frame (2) to move and adjust. An optical module (3) is provided on the adjustment frame (2), and the optical module (3) adjusts the optical axis position by sliding the second curved surface (21) on the first curved surface (111); A fixing component (4) is provided on the adjustment frame (2). The fixing component (4) is connected to the fixing base (1) to fix the optical axis position of the optical module (3).

2. The optical axis adjustment structure according to claim 1, characterized in that, The first curved surface (111) includes a first end support surface (1111) and a second end support surface (1112), and the second curved surface (21) includes a first end adjustment surface (211) and a second end adjustment surface (212). The first end adjustment surface (211) cooperates with the first end support surface (1111), and the second end adjustment surface (212) cooperates with the second end support surface (1112).

3. The optical axis adjustment structure according to claim 2, characterized in that, The first end support surface (1111) and the second end support surface (1112) are two spherical surfaces on the support sphere, and the first end adjustment surface (211) and the second end adjustment surface (212) are two spherical surfaces on the adjustment sphere. The diameter of the support sphere is larger than the diameter of the adjustment sphere.

4. The optical axis adjustment structure according to claim 2, characterized in that, The surface of the fixed base (1) is provided with a first boss (12) and a second boss (13). The first boss (12) is provided with a first end support surface (1111), and the second boss (13) is provided with a second end support surface (1112). The first boss (12) and the second boss (13) enclose the mounting cavity (11).

5. The optical axis adjustment structure according to claim 1, characterized in that, The fixing component (4) includes: The pressure block (41) is connected to the fixed base (1); An elastic pad (42) is disposed between the pressure block (41) and the fixed base (1) to provide Z-axis movement of the optical module (3).

6. The optical axis adjustment structure according to claim 5, characterized in that, The elastic pad (42) is arranged around the adjusting frame (2), and the elastic pad (42) and the adjusting frame (2) are pressed between the pressure block (41) and the fixed seat (1); and / or, The adjustment frame (2) is provided with a positioning wing (23) around its periphery, and the elastic pad (42) is provided with a positioning groove (421) that cooperates with the positioning wing (23).

7. The optical axis adjustment structure according to claim 5, characterized in that, The fixing component (4) also includes: An adjusting member (43) is provided in the through hole of the pressure block (41) and the elastic pad (42), and the adjusting member (43) is connected to the fixed seat (1) through the through hole.

8. The optical axis adjustment structure according to claim 7, characterized in that, The adjusting member (43) is provided in two sets. The first set of adjusting members (43) is symmetrically arranged on both sides of the second axis along the first axis, and the second set of adjusting members (43) is symmetrically arranged on both sides of the first axis along the second axis. The first axis and the second axis are perpendicular.

9. The optical axis adjustment structure according to any one of claims 1 to 8, characterized in that, The fixed base (1) is provided with an assembly frustum (14), the outer circle of which is an assembly surface for installing the optical axis adjustment structure in the ranging device.

10. A ranging device, characterized in that, The optical module includes a light beam module and an optical axis adjustment structure as described in any one of claims 1 to 9. The optical axis position of the optical module (3) is adjusted by the optical axis adjustment structure to achieve optical axis calibration between the light beam module and the optical module (3).

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