Coaxial adjusting device of laser range finder

Abstract

The utility model discloses a laser range finder coaxial adjusting device, relates to the laser range finding technology field, the laser range finder coaxial adjusting device comprises a fixed column, a mounting seat, and a plurality of positioning assemblies, the fixed column is provided with a directional light source, the light path direction of the directional light source coincides with the axis of the fixed column, the mounting seat is used for mounting a receiving lens, and the positioning assemblies are used for positioning the receiving lens. Positioning openings are formed in the mounting seats; the positioning assemblies are arranged at intervals in the circumferential direction of the fixing column; the multiple positioning assemblies abut against the positioning opening in different directions so as to fix the installation base, the positioning assemblies can move in the radial direction of the fixing column, the position of the installation base relative to the fixing column is adjusted, the fixing column and the installation base are coaxial, a user can directly install the installation base on the fixing column through the positioning assemblies, coaxial adjustment can be achieved, and the user experience is improved. A certain fault-tolerant space is provided for the machining precision, the requirement for the machining precision is lowered, the installation steps are simplified, and the operation difficulty is lowered.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser range finder technical field, especially a laser range finder coaxial adjusting device. BACKGROUND

[0002] The main components of the laser range finder product include a laser, a receiving lens, a receiving sensor and a related processing circuit, and the principle is to calculate the actual ranging distance through the time difference between the main wave and the echo wave generated by the pulse laser and an algorithm. The key step to ensure the stable function of the range finder includes the coaxiality of the laser light path of the range finder and the light path of the sensor, so that the laser reflected by the irradiated object can be received by the receiving lens for subsequent software calculation.

[0003] The receiving lens is used to refract light rays, so that the light emitted by the transmitting lens can be received by the receiving sensor after refraction, which requires the receiving lens and the receiving sensor to be coaxial with respect to the calibration axis.

[0004] The common adjustment method is to fix the mounting seat on the fixed seat, and a light source is arranged in the fixed seat to replace the sensor, so that the light path of the sensor is visible. Then, the light spot formed by the laser of the transmitting end is compared with the light spot formed by the light source. Based on this, the receiving lens is fine-tuned with respect to the mounting seat, so that the light spots correspond to each other, that is, the light paths coincide with each other. Then, the sensor is installed back, wherein the mounting seat is used to install the receiving lens and the sensor.

[0005] In order to achieve the above purpose, the axis of the light source needs to be consistent with the axis of the sensor, so as to correctly reflect the light path of the sensor and realize accurate adjustment.

[0006] The fixed seat and the mounting seat need to have high precision to ensure the coaxiality of the mounting seat and the fixed seat, so as to correctly reflect the light spot of the receiving end with respect to the light path of the sensor. Such high requirements not only increase the complexity of installation, but also may cause errors in the production and debugging process, affect the final ranging accuracy, require high processing precision, and increase the production cost. UTILITY MODEL CONTENTS

[0007] The main purpose of the utility model is to provide a laser range finder coaxial adjusting device, which aims to improve the coaxiality of the fixed seat and the mounting seat.

[0008] To achieve the above purpose, the laser range finder coaxial adjusting device provided by the utility model comprises:

[0009] The fixed column is used to install the directional light source, and the light path direction of the directional light source is coincident with the axis of the fixed column;

[0010] The mounting seat is provided with a positioning hole, and the fixing column is arranged in the positioning hole.

[0011] The plurality of positioning components are arranged along the fixing column in a circumferential direction, and the inner side of the positioning hole is in abutment with the positioning components.

[0012] In an embodiment, the positioning component comprises a positioning pin and a pushing part, the pushing part is connected to the positioning pin, and the pushing part is used to push the positioning pin to move radially along the fixing column to abut the inner side of the positioning hole.

[0013] In an embodiment, the pushing part comprises an elastic member, one end of the elastic member is connected to the positioning pin, the positioning pin is in abutment with the inner side of the positioning hole, and the elastic member is in a compressed state.

[0014] In an embodiment, the positioning component further comprises a mounting block, the mounting block is detachably connected to the fixing column, the mounting block is concave inwardly to form a first mounting groove, the pushing part is arranged in the mounting groove, one end of the pushing part is connected to the bottom wall of the first mounting groove, and the other end of the pushing part is connected to the positioning pin.

[0015] In an embodiment, the fixing column is concave inwardly along the circumferential direction to form a plurality of second mounting grooves, and the mounting block is inserted into the second mounting grooves.

[0016] In an embodiment, the cross section of the positioning hole is circular.

[0017] In an embodiment, the abutment surface of the positioning pin in abutment with the inner side of the positioning hole is an arc surface.

[0018] In an embodiment, the coaxial adjustment device of the laser range finder further comprises a limiting part, the limiting part is fixedly connected to the fixing column and / or the positioning component, the limiting part is used to abut the mounting seat, so that the cross section of the positioning hole is perpendicular to the axis of the fixing column.

[0019] In an embodiment, the emitting end of the directional light source is provided with an optical filter, the optical filter is fixedly connected to the fixing column, the optical filter is provided with a light transmission hole, and the optical filter is arranged coaxially with the axis of the fixing column.

[0020] In an embodiment, the coaxial adjustment device of the laser range finder further comprises a two-axis translation stage, one end of the fixing column away from the mounting seat is connected to the two-axis translation stage, and the two-axis translation stage is used to drive the mounting seat to move inwardly along the cross section of the positioning hole.

[0021] The technical scheme of the utility model discloses a fixing column and the mounting seat are coaxial by cooperation of the fixing column and the mounting seat, the mounting seat is fixed by the positioning assembly along the radial direction of the fixing column and abuts against the inner side of the positioning port, a plurality of positioning assemblies abut against the positioning port in different directions to realize the fixation of the mounting seat, and the positioning assembly can move along the radial direction of the fixing column, the position of the mounting seat relative to the fixing column is adjusted, the coaxial adjustment of the fixing column and the mounting seat is realized, the mounting seat can be directly mounted on the fixing column through the positioning assembly, the coaxial adjustment is realized, a certain fault tolerance space is provided for machining precision, the requirement for machining precision is reduced, the mounting step is simplified, and the operation difficulty is reduced, so as to avoid errors. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained from the structures shown in the drawings without creative labor for those skilled in the art.

[0023] Figure 1 The structure schematic view of one embodiment of the laser range finder coaxial adjustment device provided by the utility model is shown in the figure.

[0024] Figure 2 The front view of the mounting seat and the fixing column assembly is shown in the figure.

[0025] Figure 3 The assembly structure schematic view of the fixing column and the positioning assembly is shown in the figure.

[0026] Figure 4 The assembly structure sectional view of the fixing column and the positioning assembly is shown in the figure.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 100, laser range finder coaxial adjustment device, 1, fixing column, 2, directional light source, 3, mounting seat, 31, positioning port, 4, positioning assembly, 41, positioning pin, 42, pushing part, 43, mounting block, 431, first mounting groove, 5, second mounting groove, 51, mounting gap, 6, round head end, 7, limiting part, 8, optical filter, 81, light transmission hole, 9, two-axis translation stage, 91, first translation stage, 92, second translation stage, 93, fixed table, 94, first adjusting screw, 95, second adjusting screw.

[0029] The realization, functional characteristics and advantages of the utility model will be further explained by combining with the embodiments and referring to the drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0031] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, and the like), the directional indications are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0032] In addition, if the embodiments of the present application involve descriptions of "first", "second" and the like, the descriptions of "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0033] The main components of the laser range finder product include a laser, a receiving lens, a receiving sensor and related processing circuit. The principle is to generate a time difference between a main wave and a return wave through a pulse laser, and to calculate the actual ranging distance through an algorithm. The key step to ensure the stability of the range finder function includes the coaxiality of the laser light path of the range finder and the light path of the sensor, so that the laser reflected by the irradiated object can be received by the receiving lens for later software calculation.

[0034] The receiving lens is used to refract light rays, so that the light emitted by the transmitting lens can be received by the receiving sensor after refraction. Therefore, the receiving lens and the receiving sensor need to be relatively calibrated to coincide with the axis.

[0035] The common adjustment mode is that the mounting base is fixed on the fixed base, a light source is arranged in the fixed base to replace the sensor, the light path of the sensor is visible, the light spot formed by the laser of the emitting end is compared with the light spot formed by the light source, the receiving lens is finely adjusted relative to the mounting base based on this, the light spots are corresponded, the light paths of the two are coincided, and then the sensor is installed back, wherein the mounting base is used for installing the receiving lens and the sensor.

[0036] In order to achieve the above purpose, the axis of the light source is consistent with the axis of the sensor, so as to correctly reflect the light path of the sensor and realize accurate adjustment.

[0037] The fixed base and the mounting base need to have high precision to ensure the coaxiality of the mounting base and the fixed base, so as to correctly reflect the light spot of the receiving end to the light path of the sensor. Such high requirement not only increases the complexity of installation, but also may cause errors in the production and debugging process, affects the final ranging accuracy, and requires high processing precision, thereby increasing the production cost.

[0038] The utility model provides a kind of laser range finder coaxial adjustment device 100.

[0039] Please refer to Figures 1 to 4 In an embodiment of the utility model, the laser range finder coaxial adjustment device 100 includes:

[0040] The fixed column 1 is used to install the directional light source 2, and the light path direction of the directional light source 2 is coincided with the axis of the fixed column 1.

[0041] The mounting base 3 is used to install the receiving lens, and the mounting base 3 is provided with a positioning port 31, and the fixed column 1 is arranged in the positioning port 31.

[0042] A plurality of positioning components 4 are arranged along the circumferential direction of the fixed column 1, the inner side of the positioning port 31 is in abutment with the positioning component 4, and the plurality of positioning components 4 move along the radial direction of the fixed column 1, so that the mounting base 3 is coaxially arranged with the fixed column 1.

[0043] The receiving lens is arranged on the side of the mounting base 3 away from the directional light source 2.

[0044] As shown in Figure 2 The plurality of positioning components 4 move along the radial direction of the fixed column 1, and the moving direction of the plurality of positioning components 4 is in the same plane, and the plane is perpendicular to the axis of the fixed column 1, so that the force direction of the mounting base 3 is in the same plane, and the mounting base 3 is not rotated and inclined.

[0045] Optionally, the number of the positioning components 4 is three, and the included angles between the moving directions of the three positioning components 4 are equal, or the number of the positioning components 4 is four, and the included angles between the moving directions of the four positioning components 4 are equal, so as to ensure the adjustment and fixation of the mounting seat 3, and the embodiment does not make specific limitation on this.

[0046] It should be noted that the number of the positioning components 4 is multiple, when the axis of the mounting seat 3 is offset relative to the axis of the fixed column 1, the relative position between the mounting seat 3 and the fixed column 1 can be adjusted through the positioning components 4 at different positions, so that the mounting seat 3 is coaxial with the fixed column 1.

[0047] It should be noted that the positioning port 31 is used to install a receiving sensor, and the axis of the positioning port 31 is consistent with the axis of the mounting seat 3, the relative position between the mounting seat 3 and the fixed column 1 can be adjusted by the positioning component 4, so that the axis of the fixed column 1 is consistent with the axis of the positioning port 31, that is, the axis of the fixed column 1 is consistent with the axis of the mounting seat 3.

[0048] Optionally, the cross-sectional shape of the positioning port 31 is adapted to the shape of the receiving sensor, so that after the receiving sensor is installed, the axis of the receiving sensor is consistent with the axis of the positioning port 31, and after calibration is completed, the receiving sensor and the mounting seat 3 are directly fixed.

[0049] The technical scheme of the utility model discloses a fixed column 1 and mounting seat 3 cooperate to realize the coaxial of fixed column 1 and mounting seat 3, the fixed column 1 is limited by the positioning component 4 and fixes mounting seat 3, the positioning component 4 moves along the radial direction of fixed column 1 and abuts the inner side of positioning port 31, multiple positioning components 4 abut positioning port 31 along different directions to realize the fixation of mounting seat 3, and the positioning component 4 can move along the radial direction of fixed column 1, adjust the position of mounting seat 3 relative to fixed column 1, so that the fixed column 1 is coaxial with the mounting seat 3, the user can install mounting seat 3 on fixed column 1 through positioning component 4, and coaxial adjustment can be realized, which provides a certain fault tolerance space for machining precision, reduces the requirement for machining precision, simplifies the installation steps, and reduces the operation difficulty, so as to avoid errors.

[0050] Optionally, the positioning component 4 includes a positioning pin 41 and a pushing part 42, the pushing part 42 is connected with the positioning pin 41, and is used to push the positioning pin 41 to move along the radial direction of the fixed column 1 to abut the inner side of the positioning port 31.

[0051] As Figure 4As shown, it should be noted that the pushing part 42 continuously pushes the positioning pin 41, so that the positioning pin 41 abuts against the inner side of the positioning opening 31, and the friction between the positioning pin 41 and the positioning opening 31 can be increased by the pushing part 42, so as to improve the stability of assembly;

[0052] In addition, the relative position relationship between the mounting seat 3 and the fixed column 1 can be adjusted by the movement of the positioning pin 41 pushed by the pushing part 42, so as to realize the coaxiality of the mounting seat 3 and the fixed column 1.

[0053] In an embodiment, the pushing part 42 comprises a hydraulic cavity connected with a hydraulic pump, and one end of the positioning pin 41 is connected with the hydraulic cavity, and the movement of the positioning pin 41 is controlled by the hydraulic pump, so as to realize positioning adjustment.

[0054] In another embodiment, the pushing part 42 comprises an air pressure cavity connected with an air pump, and one end of the positioning pin 41 is connected with the air pressure cavity, and the movement of the positioning pin 41 is controlled by the air pump, so as to realize positioning adjustment.

[0055] Optionally, the pushing part 42 comprises an elastic member, one end of the elastic member is connected with the positioning pin 41, the positioning pin 41 abuts against the inner side of the positioning opening 31, and the elastic member is in a compressed state.

[0056] As shown, Figure 4 It should be noted that the elastic member can continuously exert outward movement force on the positioning pin 41 to abut against the positioning opening 31, so as to realize positioning of the mounting seat 3, and when the mounting seat 3 is mounted, the elastic member is compressed, so that the mounting seat 3 can be inserted into the fixed column 1, and the positioning assembly 4 corresponds to the positioning opening 31, so that the mounting of the mounting seat 3 is more convenient;

[0057] In addition, when the positioning pin 41 abuts against the inner side of the positioning opening 31, the elastic member is in a compressed state, and the elastic member can continuously exert outward movement force on the positioning pin 41, and by arranging a plurality of positioning pins 41 at different positions, automatic calibration of the mounting seat 3 can be realized, which is more convenient.

[0058] In some embodiments, the fixed column 1 is internally recessed on the surface to form an accommodating cavity for mounting the elastic member, one end of the elastic member is connected with the bottom wall in the accommodating cavity, and the other end is connected with the positioning pin 41.

[0059] Optionally, the positioning assembly 4 further comprises a mounting block 43, which is detachably connected to the fixed column 1, and a first mounting groove 431 is formed in the mounting block 43, and the pushing part 42 is arranged in the mounting groove, and one end of the pushing part 42 is connected to the bottom wall in the first mounting groove 431 and the other end is connected to the positioning pin 41.

[0060] It should be noted that the size of the laser ranging instrument, the receiving lens and the mounting seat 3 may change, and therefore, when assisting in calibrating the mounting seat 3 of different sizes, the size of the corresponding positioning port 31 may also be adjusted, and therefore, the length of the positioning pin 41 and the length of the elastic member need to be set correspondingly to fix the mounting seat 3, and as the use time increases, the elastic member needs to be maintained and replaced to ensure the normal function.

[0061] It can be understood that when the positioning assembly 4 needs to be adjusted or replaced, the mounting block 43 can be simply detached, and by directly replacing the mounting block 43, the specifications of the elastic member and the positioning pin 41 can be replaced, which is more convenient and efficient without complicated adjustment process, thereby improving the work efficiency.

[0062] It should be noted that the mounting block 43 is detachably connected to the fixed column 1 by screw thread connection, pin connection or clamping connection, and the present embodiment does not make specific limitation thereto.

[0063] Optionally, the fixed column 1 is circumferentially recessed to form a plurality of second mounting grooves 5, and the mounting block 43 is inserted into the second mounting groove 5.

[0064] As shown in Figure 3 It should be noted that by the insertion mode, the mounting block 43 can be easily embedded in the second mounting groove 5 of the fixed column 1, and the insertion design makes the mounting block 43 can be conveniently detached and reinstalled, which provides great convenience for subsequent adjustment and maintenance work, thereby greatly simplifying the assembly process and improving the assembly efficiency;

[0065] Furthermore, the mounting block 43 and the fixed column 1 can be further fixed by bolts and the like, and further, the insertion structure between the mounting block 43 and the fixed column 1 can provide stable support, effectively preventing the mounting block 43 from loosening or shifting during use, thereby enhancing the stability of the entire device structure.

[0066] Optionally, the second mounting groove 5 is provided with a mounting gap 51 on the side close to the receiving lens, so as to facilitate the taking of the mounting block 43.

[0067] Optionally, the mounting block 43 is inserted into the second mounting groove 5, and the mounting block 43 partially protrudes out of the second mounting groove 5, so as to facilitate the taking of the mounting block 43.

[0068] Optionally, the positioning opening 31 has a circular cross section.

[0069] It should be noted that the positioning opening 31 can also be used for mounting a receiving sensor, and therefore the positioning opening 31 needs to be adapted to the receiving sensor to achieve more stable and convenient installation.

[0070] It should be noted that the receiving sensor is generally circular in shape, and after calibration is completed, the receiving sensor needs to be fixedly connected to the mounting seat 3, and the cross section of the positioning opening 31 is adapted to the shape of the receiving sensor, which can ensure the consistency of the axial direction of the sensor with the axial direction of the positioning opening 31, greatly simplifying the assembly process and improving the installation efficiency.

[0071] In addition, the circular cross section has symmetry, so that the mounting seat 3 is more easily coaxial with the fixed column 1 during installation, thereby improving the coaxiality of the mounting seat 3 and the fixed column 1. This is crucial for ensuring the precise alignment between the directional light source 2 and the receiving lens, and helps to improve the accuracy and reliability of the distance measurement.

[0072] It should be noted that the circular cross section of the positioning opening 31 in combination with the elastic member can enhance the calibration efficiency, as shown in Figure 2 for example, when the mounting seat 3 is offset relative to the fixed column 1, the force receiving surface of the positioning pin 41 abutting against the positioning opening 31 is not perpendicular to the movement direction of the positioning pin 41, and the positioning pin 41 will exert a force on the mounting seat 3 in the opposite direction of the offset to calibrate the mounting seat 3.

[0073] In an embodiment, the cross section of the positioning opening 31 is square, the number of the positioning assemblies 4 is four, and the positioning assemblies 4 correspond to the four corners of the positioning opening 31, and optionally, the end of the positioning pin 41 abutting against the positioning opening 31 is provided with a protruding block having a triangular cross section, and when the mounting seat 3 is calibrated and positioned relative to the fixed column 1, one corner of the protruding block abuts against one corner of the positioning opening 31.

[0074] It can be understood that the four sides of the positioning opening 31 are designed to be inclined relative to the movement direction of the positioning pin 41, which can improve the force on the fixed seat in the calibration direction when the mounting seat 3 is offset.

[0075] Optionally, the abutting surface of the positioning pin 41 abutting against the inner side of the positioning opening 31 is an arc surface.

[0076] In one embodiment, the contact surface between the positioning pin 41 and the inner side of the positioning port 31 is an arc-shaped surface, the positioning pin 41 and the positioning port 31 are in line contact, and the contact line between the positioning pin 41 and the positioning port 31 is parallel to the axis of the fixed column 1, thereby ensuring that the cross section of the positioning port 31 is perpendicular to the axis of the fixed column 1, so as to facilitate calibration and improve calibration efficiency and accuracy.

[0077] Optionally, one end of the positioning pin 41 is a rounded end 6, which abuts against the inner side of the positioning port 31.

[0078] like Figure 3 As shown, it should be noted that the design of the rounded end 6 ensures that the contact between the positioning pin 41 and the inner side of the positioning port 31 is a point contact, rather than a line contact or surface contact. This point contact method can reduce the friction and errors caused by excessive contact area, thereby improving the accuracy of calibration.

[0079] Furthermore, the rounded end 6 makes it easier for the mounting base 3 to be inserted into the fixing post 1. Because the rounded end 6 has a smooth contour, it can be directly pushed into the mounting base 3, while compressing the elastic element, reducing insertion difficulties caused by shape mismatch or size deviation, improving the convenience of installation, and also reducing the risk of damage caused by improper installation.

[0080] Optionally, the coaxial adjustment device 100 of the laser rangefinder further includes a limiting part 7, which is fixedly connected to the fixing column 1 and / or the positioning component 4. The limiting part 7 is used to abut against the mounting base 3 so that the cross section of the positioning port 31 is perpendicular to the axis of the fixing column 1.

[0081] It should be noted that, in order to ensure the accuracy of the calibration, the cross section of the positioning port 31 needs to be perpendicular to the axis of the fixed column 1. To ensure perpendicularity, other accessories, such as a level, are required for calibration, which is inconvenient to use.

[0082] It should be noted that the limiting part 7 ensures that when the mounting base 3 is inserted into the fixing column 1, the cross section of the positioning port 31 can remain perpendicular to the axis of the fixing column 1, which improves the coaxial accuracy of the coaxial adjustment device and ensures the precise alignment of the axis between the mounting base 3 and the fixing column 1.

[0083] With the setting of the limiting part 7, the mounting base 3 can more easily reach the correct position during installation without the need for complicated adjustment and calibration processes, which greatly simplifies the installation and adjustment steps and improves work efficiency.

[0084] Optionally, the limiting part 7 includes a limiting block, which is fixedly connected to the fixing column 1. The contact surface between the limiting block and the mounting base 3 is perpendicular to the axis of the fixing column 1, thereby making the cross section of the positioning port 31 perpendicular to the axis of the fixing column 1.

[0085] Optionally, there are multiple limiting blocks, which are spaced apart around the circumference of the fixed column 1, and the contact surfaces of the multiple limiting blocks are all located on the same plane. The multiple limiting blocks provide more reference points for the adjustment and calibration of the mounting base 3, and provide more balanced and stable support for the mounting base 3.

[0086] Furthermore, the limiting block is symmetrically arranged relative to the fixing column 1, which can prevent the mounting base 3 from tilting or deforming due to uneven force during installation or use.

[0087] In one embodiment, the limiting part 7 includes a limiting block, which is fixedly connected to the mounting block 43. The contact surface between the limiting block and the mounting base 3 is perpendicular to the axis of the fixing column 1, thereby making the cross section of the positioning port 31 perpendicular to the axis of the fixing column 1.

[0088] Optionally, the directional light source 2 is provided with an optical filter 8 on the emitting end side. The optical filter 8 is fixedly connected to the fixing post 1. The optical filter 8 has a light-transmitting hole and is aligned with the axis of the fixing post 1 to transmit part of the light.

[0089] like Figure 4 As shown, it should be noted that the optical filter 8 can block part of the light emitted by the directional light source 2. The optical filter 8 allows light from a specific direction to pass through through the light-transmitting hole on it, while blocking other unnecessary light. This filtering effect can reduce light scattering and interference, and ensure that the emitted light from the directional light source 2 is highly consistent with the axis of the fixed column 1.

[0090] Furthermore, the amount of light transmitted can be reduced through the light-transmitting hole, making the light spot formed by the directional light source 2 more accurate, thereby reducing calibration errors caused by an excessively large light spot.

[0091] Optionally, the diameter of the light-transmitting hole is 0.02 mm.

[0092] Optionally, the coaxial adjustment device 100 of the laser rangefinder further includes a two-axis translation stage 9. The end of the fixed column 1 away from the mounting base 3 is connected to the two-axis translation stage 9. The two-axis translation stage 9 is used to drive the mounting base 3 to move within the cross-sectional direction of the positioning port 31.

[0093] It should be noted that the two-axis translation table 9 has precise translation capability in two orthogonal directions in the plane. This design allows the fixed column 1 and the mounting seat 3 thereon to be finely adjusted along the direction of the section of the positioning port 31, so that the light spot formed by the emitting end corresponds to the light spot formed by the directional light source 2, thereby ensuring that the light paths of the emitting end and the receiving end are accurately aligned. Compared with manual adjustment, the two-axis translation table 9 can achieve more stable and accurate fine adjustment, thereby improving the calibration efficiency.

[0094] As shown in Figure 1 It should be noted that the two-axis translation table 9 includes a first translation table 91, a second translation table 92, and a fixed table 93 connected in sequence.

[0095] The first translation table 91 is connected to the second translation table 92 through a first adjusting assembly, for adjusting the relative positions of the first translation table 91 and the second translation table 92.

[0096] The second translation table 92 is connected to the fixed table 93 through a second adjusting assembly, for adjusting the relative positions of the second translation table 92 and the fixed table 93.

[0097] It should be noted that the first adjusting assembly includes a first adjusting screw 94, which is threadedly connected to the first translation table 91 and the second translation table 92, and the first translation table 91 and the second translation table 92 can move relatively along the length direction of the first adjusting screw 94.

[0098] The second adjusting assembly includes a second adjusting screw 95, which is threadedly connected to the second translation table 92 and the fixed table 93, and the second translation table 92 and the fixed table 93 can move relatively along the length direction of the second adjusting screw 95.

[0099] The axis of the first adjusting screw 94 and the axis of the second adjusting screw 95 are perpendicular to each other and parallel to the section of the positioning port 31, so as to achieve precise translation in two orthogonal directions in the plane, and through thread adjustment, the adjustment is more accurate and stable compared with manual adjustment.

[0100] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A laser range finder coaxial adjustment device, characterized by, The application relates to a coaxial adjusting device for a laser range finder. The coaxial adjusting device comprises a fixed column, a mounting base, a plurality of positioning components and a two-axis translation stage. The fixed column is used for mounting a directional light source, and the light path direction of the directional light source is coincident with the axis of the fixed column. The mounting base is used for mounting a receiving lens, and the mounting base is provided with a positioning opening, and the fixed column penetrates through the positioning opening.

2. The laser rangefinder coaxial adjustment device of claim 1, wherein, The positioning components are arranged in a circumferential direction of the fixed column, and the inner side surface of the positioning opening is in abutment with the positioning components.

3. The laser rangefinder coaxial adjustment device of claim 2, wherein, The positioning components comprise positioning pins and pushing parts.

4. The laser rangefinder coaxial adjustment device of claim 2, wherein, The pushing parts are connected with the positioning pins and are used for pushing the positioning pins to move in a radial direction of the fixed column to abut against the inner side surface of the positioning opening.

5. The laser rangefinder coaxial adjustment device of claim 4, wherein, The pushing parts comprise elastic members.

6. The laser rangefinder coaxial adjustment device of any one of claims 1 to 5, wherein, One end of the elastic members is connected with the positioning pins, the positioning pins abut against the inner side surface of the positioning opening, and the elastic members are in a compressed state.

7. The laser rangefinder coaxial adjustment device of any one of claims 1 to 5, wherein, The positioning components further comprise mounting blocks.

8. The laser rangefinder coaxial adjustment device of any one of claims 1 to 5, wherein, The mounting blocks are detachably connected with the fixed column.

9. The laser rangefinder coaxial adjustment device of any one of claims 1 to 5, wherein, The mounting blocks are concave in the inner side, and the first mounting grooves are formed in the mounting blocks.

10. The laser rangefinder coaxial adjustment device of any one of claims 1 to 5, wherein, The pushing parts are arranged in the first mounting grooves. One end of the pushing parts is connected with the bottom wall of the first mounting grooves, and the other end of the pushing parts is connected with the positioning pins. The fixed column is concave in the circumferential direction, and the second mounting grooves are formed in the fixed column. The mounting blocks are inserted into the second mounting grooves. The cross section of the positioning opening is circular. The abutment surface of the positioning pins abutting against the inner side surface of the positioning opening is an arc surface. The coaxial adjusting device further comprises a limiting part. The limiting part is fixedly connected with the fixed column and / or the positioning components. The limiting part is used for abutting against the mounting base to make the cross section of the positioning opening perpendicular to the axis of the fixed column. The emission end of the directional light source is provided with an optical filter. The optical filter is fixedly connected with the fixed column. The optical filter is provided with a light transmission hole, and the light transmission hole is coaxially arranged with the axis of the fixed column. The coaxial adjusting device further comprises a two-axis translation stage. One end of the fixed column away from the mounting base is connected with the two-axis translation stage. The two-axis translation stage is used for driving the mounting base to move in the direction of the cross section of the positioning opening.

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