Laser range finder and optical instrument

Abstract

The embodiment of the invention provides a laser range finder and an optical instrument. The laser range finder comprises a transmitting module, a receiving module and an arc-shaped connecting piece, the arc-shaped connecting piece is connected with the transmitting module and the receiving module, and the transmitting module and the receiving module are arranged at an interval in a first direction; the first direction is the direction of a chord corresponding to the cambered surface of the arc-shaped connecting piece; the lengths of paths from the transmitting module and the receiving module to the curvature center of the cambered surface are the same; the transmitting module is used for generating and transmitting a laser beam transmitted along a second direction; the second direction is perpendicular to the first direction; the receiving module is used for receiving an echo light beam of the laser beam reflected by the target measured object, and obtaining a distance measurement result of the target measured object according to the echo light beam; the arc-shaped connecting piece can be connected with an optical structure with an arc surface, so that the transmitting module and the receiving module are connected with the optical structure; the curvature radius of the cambered surface is the same as that of the arc surface, and the distances from any position points on the cambered surface to the arc surface are the same.

Description

Technical Field

[0001] This application relates to the technical field of optical ranging, and particularly to a laser rangefinder and an optical instrument. Background Art

[0002] Devices with ranging functions such as ranging telescopes and sights can be widely used in industrial measurement and control, mines, ports, hunting and other fields. These devices can include two parts: an optical structure and a laser ranging structure. The optical structure can be used to observe the target object to be measured, and the laser ranging structure can be used to accurately measure the distance of the target object to be measured.

[0003] However, in the related art, the transmitting module and the receiving module in the laser ranging structure are integrated together, resulting in signal interference between the transmitting module and the receiving module, and difficulties in optical axis calibration between the transmitting module, the receiving module and the optical structure. Summary of the Invention

[0004] This application provides a laser rangefinder and an optical instrument to realize a separated laser rangefinder, so as to overcome the problems of signal interference and difficult optical axis calibration in the prior art.

[0005] In a first aspect, this application provides a laser rangefinder. The laser rangefinder includes: a transmitting module, a receiving module, and an arc-shaped connecting member; wherein, the arc-shaped connecting member connects the transmitting module and the receiving module, and the transmitting module and the receiving module are spaced apart in a first direction; the first direction is the direction of the chord corresponding to the arc surface of the arc-shaped connecting member; the lengths of the paths of the transmitting module and the receiving module to the center of curvature of the arc surface are the same; the transmitting module is used to generate and emit a laser beam transmitted along a second direction, wherein the second direction is perpendicular to the first direction; the receiving module is used to receive the echo beam reflected by the target object to be measured by the laser beam, and obtain the ranging result of the target object to be measured according to the echo beam; the arc-shaped connecting member can be connected to an optical structure with a circular arc surface, so that the transmitting module and the receiving module are connected to the optical structure, wherein the radius of curvature of the arc surface is the same as the radius of curvature of the circular arc surface, and the distance from any position point on the arc surface to the circular arc surface is the same.

[0006] In some possible implementation manners, the first end of the arc-shaped connecting member is connected to the transmitting module, and the second end of the arc-shaped connecting member is connected to the receiving module; a wiring path communicating the first end and the second end is provided inside the arc-shaped connecting member, wherein the first end and the second end are the two ends of the arc-shaped connecting member in the first direction; the laser rangefinder further includes: a wiring assembly, wherein the wiring assembly is accommodated in the wiring path, and one end is electrically connected to the transmitting module and the other end is electrically connected to the receiving module.

[0007] In some possible embodiments, a flexible cable assembly includes a power line and a control line; a transmitting module includes a transmitting component and a power supply; the transmitting component is configured to generate and emit a laser beam; the power supply is configured to supply power to the transmitting component; a receiving module includes a receiving component and a data processing component; the receiving component is configured to receive an echo beam reflected by a target object under test via the laser beam; the data processing component is configured to obtain a ranging result of the target object under test based on the echo beam; wherein, the power supply is further configured to supply power to the receiving component and the data processing component through the power line; the data processing component is further configured to control the transmitting component to emit a laser beam through the control line.

[0008] In some possible embodiments, the arc-shaped connecting member is a circular ring; wherein, a first end of the circular ring has a first mounting portion, and the transmitting module is assembled within the first mounting portion; a second end of the circular ring has a second mounting portion, and the receiving component is assembled within the second mounting portion; the assembly area of the first mounting portion is smaller than the assembly area of the second mounting portion.

[0009] In some possible embodiments, the second mounting portion is a mounting hole extending through in a second direction; wherein, the length of the mounting hole in a direction perpendicular to the arc surface is smaller than the length of the mounting hole in a direction tangent to the arc surface.

[0010] In a second aspect, the present application provides an optical instrument. The optical instrument includes: a lens; a lens barrel connected to the lens, wherein the lens and the lens barrel are coaxially arranged; a laser rangefinder according to any one of claims 1 to 5; wherein, the arc-shaped connecting member in the laser rangefinder is fixedly connected to the arc surface of the lens barrel; the radius of curvature of the arc surface of the arc-shaped connecting member is the same as the radius of curvature of the arc surface, and the distance from any point on the arc surface to the arc surface is the same; the transmission direction of the laser beam emitted by the receiving module in the laser rangefinder is the same as the principal optical axis direction of the lens.

[0011] In some possible embodiments, the arc-shaped connecting member has an assembly hole extending through in a transmission direction and / or an assembly hole extending through in any direction perpendicular to the transmission direction; the optical instrument further includes: a connecting member, wherein the connecting member passes through the assembly hole to fixedly connect the arc-shaped connecting member to the lens barrel.

[0012] In some possible embodiments, the optical instrument further includes: an annular rubber sleeve having an annular through hole extending through in a transmission direction; wherein, the lens barrel passes through the annular through hole, and the annular rubber sleeve is assembled on the outer periphery of the lens barrel and the annular rubber sleeve wraps the laser rangefinder.

[0013] In some possible embodiments, the optical instrument further includes: a main processor and a signal transmission line; one end of the signal transmission line is electrically connected to the main processor, and the other end is electrically connected to the laser rangefinder; wherein, the main processor is configured to control the operation of the transmitting module and / or the receiving module in the laser rangefinder through the signal transmission line; the main processor is further configured to receive, through the signal transmission line, the ranging result of the target object measured by the receiving module.

[0014] In some possible embodiments, the optical instrument further includes: a signal output module; the signal output module is electrically connected to the main processor; wherein, the main processor is further configured to merge the ranging result with the imaging result of the lens, and output the processed ranging result to the signal output module; the signal output module is configured to receive the processed ranging result and output the processed ranging result to the user.

[0015] The technical solution provided by this application may include the following beneficial effects:

[0016] In this application, the arc-shaped connecting member can arrange the transmitting module and the receiving module at intervals in the first direction, and enable the transmitting module to emit a laser beam transmitted in the second direction. In this way, on the one hand, the separation of the transmitting module and the receiving module can be realized, avoiding signal interference caused by the adjacent arrangement of the transmitting module and the receiving module; on the other hand, when the arc-shaped connecting member is connected to the optical structure with a circular arc surface, the direction of the main optical axis of the optical structure is also the second direction, so as to ensure that the laser beam can be transmitted along the direction of the main optical axis, improving the accuracy and precision of ranging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the first laser rangefinder provided by an embodiment of this application.

[0018] Figure 2 is a schematic structural diagram of the second laser rangefinder provided by an embodiment of this application.

[0019] Figure 3 is the first one provided by an embodiment of this application along Figure 1 a schematic structural diagram of the arc-shaped connecting member of the A-A' cross-section in.

[0020] Figure 4 is the second one provided by an embodiment of this application along Figure 1 a schematic structural diagram of the arc-shaped connecting member of the A-A' cross-section in.

[0021] Figure 5 is a schematic structural diagram of the third laser rangefinder provided by an embodiment of this application.

[0022] Figure 6 is a schematic structural diagram of the fourth laser rangefinder provided by an embodiment of this application.

[0023] Figure 7 It is a schematic structural diagram of the first optical instrument provided by an embodiment of the present application.

[0024] Figure 8 It is a schematic structural diagram of the second optical instrument provided by an embodiment of the present application.

[0025] Figure 9 It is a schematic structural diagram of the third optical instrument provided by an embodiment of the present application.

[0026] Figure 10 It is a schematic structural diagram of the fourth optical instrument provided by an embodiment of the present application. Description of the drawings:

[0028] 10. Laser rangefinder; 11. Transmitting module; 111. Transmitting component; 112. Power supply; 12. Receiving module; 121. Receiving component; 122. Data processing component; 13. Arc-shaped connecting piece; 131. Inner arc surface; 132. Outer arc surface; 133. Cable routing; 134. First mounting part; 135. Second mounting part; 136. Assembly hole; 14. Cable assembly; 20. Optical instrument; 21. First lens barrel; 211. Outer arc surface; 22. Second lens barrel; 221. Inner arc surface; 23. Signal transmission line; 24. Annular rubber sleeve. Detailed implementation manners

[0029] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0030] In order to illustrate the technical solutions described in the present application, the following will be described through specific embodiments.

[0031] In a first aspect, an embodiment of the present application provides a laser rangefinder. Figure 1 It is a schematic structural diagram of the first laser rangefinder provided by an embodiment of the present application. Figure 2 It is a schematic structural diagram of the second laser rangefinder provided by an embodiment of the present application. Refer to Figures 1 to 2As shown, the laser rangefinder 10 includes a transmitting module 11, a receiving module 12, and an arc-shaped connecting member 13. The arc-shaped connecting member 13 can be connected to both the transmitting module 11 and the receiving module 12 simultaneously, and in the first direction, the transmitting module 11 and the receiving module 12 are spaced apart. Here, the first direction is the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13. The lengths of the paths from the transmitting module 11 and the receiving module 12 to the center of curvature of the arc surface are the same.

[0032] It can be understood that the arc-shaped connecting member 13 is an arc-shaped structure, and an arc surface can be formed on its surface along the arc extension direction. The arc-shaped connecting member 13 can include an inner arc surface 131, an outer arc surface 132, and a side surface connecting the inner arc surface 131 and the outer arc surface 132. Among them, the inner arc surface 131 is closer to the center of curvature of the arc-shaped connecting member 13 than the outer arc surface 132. Here, the center of curvature of the arc-shaped connecting member 13 can refer to the center of curvature of the arc surface or the arc edge of the arc-shaped connecting member 13. Taking the arc edge as an example, the center of curvature of the arc edge can be the center of the circle corresponding to the arc edge. Taking the arc surface as an example, the center of curvature of the arc surface can be the center of the circular ring corresponding to the arc surface. The arc-shaped connecting member 13 can have a regular shape, and the center of curvature at any position point on the arc-shaped connecting member 13 is the same.

[0033] It can be understood that according to the shape of the arc-shaped connecting member 13, the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13 can be determined as the first direction. Here, the chord corresponding to the arc surface refers to the connection line between two position points on the arc edge (the edge with a certain curvature) of the arc surface. The direction of the chord is the direction of the straight line where the chord is located. In one embodiment, the direction of the chord can be any direction tangent to the arc surface of the arc-shaped connecting member 13.

[0034] It can be understood that the transmitting module 11 and the receiving module 12 can be spaced apart in the first direction, that is, spaced apart in any direction tangent to the arc surface of the arc-shaped connecting member 13. In this way, the transmitting module 11 and the receiving module 12 are separated, thus avoiding signal interference caused by adjacent arrangement between the transmitting module 11 and the receiving module 12.

[0035] In some embodiments, the length of the arc edge of the arc surface of the arc-shaped connecting member 13 can be a quarter circle arc, a half circle arc, a three-quarter circle arc, etc., and the embodiments of the present application do not limit this. In some embodiments, as shown in Figure 1 As shown, the arc-shaped connecting member 13 can be an arc-shaped plate, and the length of the arc edge of the arc-shaped plate can be a half circle arc.

[0036] In some embodiments, while the transmitting module 11 and the receiving module 12 are spaced apart in the first direction, the length of the path from the transmitting module 11 to the center of curvature of the arc surface (usually the inner arc surface) can be the same as the length of the path from the receiving module 12 to the center of curvature of the arc surface (usually the inner arc surface). Here, the length of the path from the transmitting module 11 to the center of curvature of the arc surface refers to the length of the path from the transmitting optical path channel in the transmitting module 11 to the center of curvature of the arc surface. The length of the path from the receiving module 12 to the center of curvature of the arc surface refers to the length of the path from the receiving optical path channel in the receiving module 12 to the center of curvature of the arc surface.

[0037] In some embodiments, the transmitting module 11 is fixedly connected to the arc-shaped connecting member 13. The connection manner between the transmitting module 11 and the arc-shaped connecting member 13 can be set according to actual requirements, and the embodiments of the present application do not limit this. The receiving module 12 is fixedly connected to the arc-shaped connecting member 13. The connection manner between the receiving module 12 and the arc-shaped connecting member 13 can be set according to actual requirements, and the embodiments of the present application do not limit this.

[0038] In some embodiments, the transmitting module 11 can be the optical signal generating and directional transmitting unit in the laser rangefinder 10. Its core functions can include: generating a high-density laser beam through a laser diode (LD) and transmitting it along a preset second direction to meet the detection and ranging requirements. Here, the second direction is the emission direction of the laser beam, and the second direction can be perpendicular to the first direction, that is, perpendicular to the arrangement direction of the transmitting module 11 and the receiving module 12.

[0039] In some embodiments, the receiving module 12 can be the optical signal capturing unit in the laser rangefinder 10. Its core functions can include: capturing the echo beam reflected by the target object to be measured through a high-sensitivity photodetector (such as an avalanche photodiode (APD) sensor).

[0040] In some embodiments, the receiving module 12 can also be the ranging calculation unit in the laser rangefinder 10. Its core functions can include: using a time-to-digital converter (TDC) chip to resolve the time of flight of the echo beam, and combining with the time of flight (ToF) algorithm to obtain the ranging result of the target object to be measured.

[0041] In some embodiments, the ranging calculation unit can also be integrated in the transmitting module 11 in the laser rangefinder 10, and the embodiments of the present application do not limit this. When the ranging calculation unit is integrated in the receiving module 12, the transmitting module 11 only needs to be responsible for emitting the laser beam, and the volume of the transmitting module 11 can be reduced, thereby reducing the occupied area of the laser rangefinder 10.

[0042] It can be understood that through the collaborative work of the above-mentioned transmitting module 11 and receiving module 12, the laser rangefinder 10 can accurately measure the distance to the target object to be measured.

[0043] In some embodiments, the arc-shaped connecting member 13 can be connected to an optical structure having an arc surface, so that the transmitting module 11 and the receiving module 12 can indirectly connect to the optical structure. Here, the optical structure with an arc surface can have an inner arc surface or an outer arc surface optical structure. Thus, the arc-shaped connecting member 13 can be connected to the outer arc surface or inner arc surface of the connecting optical structure, so that the transmitting module 11 and the receiving module 12 can indirectly connect to the optical structure. In one embodiment, the optical structure having an arc surface can be an optical device such as a telescope or a sight, or an optical structure such as a lens or a lens barrel. The outer arc surface can be the outer surface of the lens barrel of a telescope, the inner surface of a lens barrel, etc.; the inner arc surface can be the inner surface of the lens frame of a lens, the inner surface of the lens barrel of a sight, etc. The embodiments of the present application do not limit this.

[0044] In some embodiments, after the arc-shaped connecting member 13 is connected to the optical structure, the radius of curvature of the arc surface of the arc-shaped connecting member 13 can be the same as the radius of curvature of the arc surface, and the distance from any position point on the arc surface of the arc-shaped connecting member 13 to the arc surface is the same.

[0045] It can be understood that when the radius of curvature of the arc surface of the arc-shaped connecting member 13 is the same as the radius of curvature of the arc surface, and the distance from any position point on the arc surface of the arc-shaped connecting member 13 to the arc surface is the same, the arc surface of the arc-shaped connecting member 13 is arranged parallel to the arc surface, or the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13 is the same as the direction of the chord corresponding to the arc surface. Thus, when there is a principal optical axis in the optical structure, and the direction where the principal optical axis is located is perpendicular to the direction of the chord corresponding to the arc surface, the direction where the principal optical axis is located can be perpendicular to the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13. Also, because the transmission direction of the laser beam emitted by the transmitting module 11 is perpendicular to the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13, the transmission direction of the laser beam emitted by the transmitting module 11 can be the same as the direction of the principal optical axis.

[0046] It can be understood that when the transmission direction of the laser beam emitted by the transmitting module 11 is the same as the direction of the principal optical axis, the transmitting module 11 and the principal optical axis of the optical structure can be coaxially arranged. This setting method can ensure that the laser beam can be accurately and efficiently transmitted along the direction of the principal optical axis, reduce the deviation and loss of the laser beam, and no additional adjustment or calibration is required, thereby ensuring the precise cooperation between the laser rangefinder 10 and the optical structure and realizing the accuracy and precision of distance measurement.

[0047] In the embodiments of the present application, the arc-shaped connecting member can arrange the transmitting module and the receiving module at intervals in the first direction, and enable the transmitting module to emit a laser beam transmitted in the second direction. In this way, on the one hand, the separation of the transmitting module and the receiving module can be achieved, avoiding signal interference caused by the adjacent arrangement of the transmitting module and the receiving module; on the other hand, when the arc-shaped connecting member is connected to the optical structure with an arc surface, the direction of the principal optical axis of the optical structure is also the second direction, so as to ensure that the laser beam can be transmitted along the direction of the principal optical axis, improving the accuracy and precision of ranging.

[0048] In some possible implementation manners, Figure 3 is the first cross-sectional view of the arc-shaped connecting member along Figure 1 the A-A' section provided by the embodiments of the present application. Figure 4 is the second cross-sectional view of the arc-shaped connecting member along Figure 1 the A-A' section provided by the embodiments of the present application. Referring to Figures 1 to 4 as shown, the first end of the arc-shaped connecting member 13 is connected to the transmitting module 11, and the second end of the arc-shaped connecting member 13 is connected to the receiving module 12; a wiring path 133 communicating the first end and the second end is provided inside the arc-shaped connecting member 13.

[0049] It can be understood that the first end and the second end are the two ends of the arc-shaped connecting member 13 in the first direction. The transmitting module 11 can be connected to the first end of the arc-shaped connecting member 13, and the receiving module 12 can be connected to the second end of the arc-shaped connecting member 13. The first end and the second end are different, so that the transmitting module 11 and the receiving module 12 can be arranged at intervals in the first direction. A wiring path 133 is formed between the first end and the second end of the arc-shaped connecting member 13, and the wiring path 133 communicates the first end and the second end.

[0050] In some embodiments, the wiring path 133 can be a hollow structure formed inside the arc-shaped connecting member 13. The wiring path 133 only communicates the first end and the second end and does not communicate with the external space. In some embodiments, the wiring path 133 can be a groove structure formed on the surface of the arc-shaped connecting member 13. While the wiring path 133 communicates the first end and the second end, it can also communicate with the external space.

[0051] It can be understood that the wiring path 133 can be set as the above-mentioned hollow structure or groove structure, and the wiring path 133 can also be set as other structures according to actual needs. The embodiments of the present application do not limit this. Exemplarily, Figure 3 the wiring path 133 shown is a hollow structure. Figure 4 The wiring path 133 shown is a groove structure, and the opening of the groove structure is on the inner arc surface 131. It can be understood that the opening of the groove structure can also be on the outer arc surface 132 or the side surface connecting the inner arc surface 131 and the outer arc surface 132. The embodiments of the present application do not limit this.

[0052] In some embodiments, the laser rangefinder 10 further includes a flexible cable assembly. The flexible cable assembly can be accommodated in a cable passage 133 within the arc-shaped connector 13. One end of the flexible cable assembly is electrically connected to the transmitting module 11, and the other end is electrically connected to the receiving module 12. The flexible cable assembly is used to achieve the electrical connection between the transmitting module 11 and the receiving module 12.

[0053] It can be understood that when the cable passage 133 is a hollow structure, the flexible cable assembly is accommodated in this hollow structure. The first end extends out from one end of the hollow structure in the first direction and is electrically connected to the transmitting module 11 connected to the first end of the arc-shaped connector 13. The second end extends out from the other end of the hollow structure in the first direction and is electrically connected to the receiving module 12 connected to the second end of the arc-shaped connector 13. In this way, through the cable passage 133, the rapid assembly of the flexible cable assembly with the transmitting module 11 and the receiving module 12 can be realized. Moreover, the flexible cable assembly is completely accommodated in the hollow structure, which can effectively prevent the flexible cable assembly from falling off and improve the assembly stability of the laser rangefinder 10.

[0054] It can be understood that when the cable passage 133 is a groove structure, the flexible cable assembly is accommodated in this groove structure (i.e., clamped in the groove structure). The first end extends out from one end of the groove structure in the first direction and is electrically connected to the transmitting module 11 connected to the first end of the arc-shaped connector 13. The second end extends out from the other end of the groove structure in the first direction and is electrically connected to the receiving module 12 connected to the second end of the arc-shaped connector 13. In this way, through the cable passage 133, the rapid assembly of the flexible cable assembly with the transmitting module 11 and the receiving module 12 can be realized. Moreover, since the cable passage 133 is a groove structure, it is easy to process and prepare, reducing the preparation difficulty of the arc-shaped connector 13.

[0055] In the embodiments of the present application, a cable passage communicating the first end and the second end is formed in the arc-shaped connector. The flexible cable assembly is accommodated in this cable passage, so as to achieve electrical connection of one end with the transmitting module connected to the first end of the arc-shaped connector and electrical connection of the other end with the receiving module connected to the second end of the arc-shaped connector. In this way, the arc-shaped connector can not only fixedly connect the transmitting module and the receiving module to ensure the stability and accuracy of these key components, but also fixedly connect the flexible cable assembly, which helps to keep the flexible cable assembly clean and safe, avoid cable winding and knotting, and further improve the overall performance and reliability of the laser rangefinder.

[0056] In some possible implementation manners, Figure 5 is a schematic structural diagram of a third laser rangefinder provided by the embodiments of the present application. Refer to Figures 1 to 5As shown, the flexible cable assembly 14 may include: a power line and a control line. The transmitting module 11 may include: a transmitting component 111 and a power supply 112 connected to the transmitting component 111. The transmitting component 111 is used to generate and emit a laser beam; the power supply 112 is used to supply power to the transmitting component 111. The receiving module 12 may include: a receiving component 121 and a data processing component 122 connected to the receiving component 121. The receiving component 121 is used to receive the echo beam reflected by the laser beam via the target object to be measured; the data processing component 122 is used to obtain the ranging result of the target object to be measured according to the echo beam.

[0057] In some embodiments, the power supply 112 is further used to supply power to the receiving component 121 and the data processing component 122 through the power supply 112 line; the data processing component 122 is further used to control the transmitting component 111 to emit a laser beam through the control line.

[0058] It can be understood that the flexible cable assembly 14 may include a power line and a control line, which are jointly used to support the operation of the transmitting module 11 and the receiving module 12. Among them, the power line is responsible for providing necessary power support for the entire system of the laser rangefinder 10. The control line is responsible for transmitting control signals to ensure that each component can operate according to predetermined instructions.

[0059] It can be understood that in the transmitting module 11, the power supply 112 may be connected to the power line, and the power supply 112 ensures that the transmitting component 111 has sufficient energy to generate and emit a laser beam. The power supply 112 supplies power to the receiving component 121 and the data processing component 122 through the power line, and the control line may be used to control parameters such as the switch of the transmitting component 111 and the intensity of the laser beam. In the receiving module 12, the data processing component 122 processes the echo beam received by the receiving component 121 and obtains the ranging result. The data processing component 122 may be connected to the control line, and the data processing component 122 controls the transmitting component 111 through the control line.

[0060] In some embodiments, the circuit structure in the transmitting module 11 may include: a laser diode, a driver, a boost circuit, a power interface, a power supply (i.e., the power supply 112), etc.

[0061] In some embodiments, the circuit structure in the receiving module 12 may include: an APD sensor, a temperature sensor, a signal amplification circuit, a central processor (i.e., the data processing component 122), etc. Among them, the central processor may be composed of a microprocessor (advanced risc machines, ARM) and a field-programmable gate array (field-programmable gate array, FPGA), or may be a system-on-chip (system on chip, SOC) processor.

[0062] In some embodiments, the flexible cable assembly 14 may include a power line and a control line. The power line mainly supplies power to the laser diode, the boost circuit, and the driver, and the control line mainly controls the laser diode to emit laser light.

[0063] In the embodiments of the present application, through the coordinated work of the power line and the control line, the flexible cable assembly provides stable and reliable power and control signal support for the transmitting module and the receiving module of the laser rangefinder, ensuring the normal operation and accurate measurement of the laser rangefinder system.

[0064] In some possible implementation manners, as shown in Figure 2 FIG. 8, the arc-shaped connecting member 13 may be a circular ring. Wherein, the first end of the circular ring has a first mounting portion 134, and the transmitting module 11 is assembled within the first mounting portion 134; the second end of the circular ring has a second mounting portion 135, and the receiving component 121 is assembled within the second mounting portion 135.

[0065] It can be understood that the arc-shaped connecting member 13 may be a circular ring and can be assembled on the periphery of an optical structure having an outer arc surface. This assembly method not only ensures the stability of the connection but also helps to calibrate the optical axis between the laser rangefinder 10 and the optical structure. In some cases, the arc-shaped connecting member 13 in the shape of a circular ring can also be tightly attached to the outer arc surface of the optical structure through its inner arc surface, thereby achieving effective connection and support.

[0066] It can be understood that the arc-shaped connecting member 13 may be a circular ring and can be sleeved inside an optical structure having an inner arc surface within the optical structure. This sleeving method not only ensures the stability of the connection but also can increase the integration degree of the arc-shaped connecting member 13 and the optical structure.

[0067] It can be understood that the first end of the circular ring may be formed with a first mounting portion 134, and the second end spaced from the first end in the first direction may be formed with a second mounting portion 135. In this way, the first mounting portion 134 can assemble the transmitting module 11, and the second mounting portion 135 can assemble the receiving module 12, so as to realize the simultaneous connection of the transmitting module 11 and the receiving module 12 to the arc-shaped connecting member 13, and the transmitting module 11 and the receiving module 12 are spaced apart in the first direction.

[0068] In some embodiments, the structure of the first mounting portion 134 can be set according to actual needs, as long as it is ensured that for the transmitting module 11 assembled in the first mounting portion 134, the transmission direction of the laser beam emitted by it is the second direction.

[0069] In one embodiment, the first mounting portion 134 may be a mounting groove, and the transmitting module 11 is assembled in the mounting groove; alternatively, the first mounting portion 134 may be an opening, and the transmitting module 11 is assembled in the opening, and so on. Here, the assembling manner of the transmitting module 11 may be selected according to actual requirements, and the embodiments of the present application do not limit this. Exemplarily, the transmitting module 11 may be assembled to the first mounting portion 134 through a connecting member, or the transmitting module 11 may be assembled to the first mounting portion 134 by a snap connection manner, and so on.

[0070] In some embodiments, the structure of the second mounting portion 135 may be set according to actual requirements, as long as it is ensured that the receiving module 12 assembled to the second mounting portion 135 can receive the echo beam in the second direction.

[0071] In one embodiment, the second mounting portion 135 may have the same structure as the first mounting portion 134, or may have a different structure from the first mounting portion 134. In one embodiment, the second mounting portion 135 may be a mounting groove, an opening, a mounting hole, etc., and the receiving module 12 is assembled to the second mounting portion 135. Here, the assembling manner of the receiving module 12 may be selected according to actual requirements, and the embodiments of the present application do not limit this. Exemplarily, the receiving module 12 may be assembled to the second mounting portion 135 through a connecting member.

[0072] In some embodiments, the assembling area of the first mounting portion 134 is smaller than the assembling area of the second mounting portion 135.

[0073] It can be understood that the assembling area of the first mounting portion 134 refers to the area reserved in the arc-shaped connecting member 13 for assembling the transmitting module 11. The assembling area of the second mounting portion 135 refers to the area reserved in the arc-shaped connecting member 13 for assembling the receiving module 12. Since the transmitting module 11 may only include the transmitting component 111, the assembling area corresponding to the transmitting module 11 may be smaller than the assembling area corresponding to the receiving module 12. In this way, the assembling area of the first mounting portion 134 may be smaller than the assembling area of the second mounting portion, and the space at the first mounting portion 134 is more saved, improving the space utilization rate of the laser rangefinder 10.

[0074] In the embodiments of the present application, the arc-shaped connecting member may have a circular ring shape, which is convenient for the laser rangefinder to align with the main optical axis of the optical structure. At the same time, the two mounting portions on the arc-shaped connecting member may have different assembling areas, which helps to optimize and improve the overall space utilization rate of the laser rangefinder, making the entire device more compact and lightweight.

[0075] In some possible implementation manners, refer to Figures 1 to 5As shown, the second mounting portion 135 is a mounting hole penetrating along the second direction. Among them, the length of the mounting hole in the direction perpendicular to the arc surface is less than the length of the mounting hole in the direction tangent to the arc surface.

[0076] It can be understood that the second mounting portion 135 can be a mounting hole penetrating along the second direction on the arc-shaped connecting member 13. The receiving module 12 can be installed in this mounting hole. Here, the length of the mounting hole in the direction perpendicular to the arc surface of the arc-shaped connecting member 13 is the first value, and the length of the mounting hole in the direction tangent to the arc surface of the arc-shaped connecting member 13 is the second value. The first value is less than the second value. That is to say, the side of the mounting hole close to the center of the circle of the ring (tangent to the arc surface) is the long side, and the side connecting the long sides (perpendicular to the long side) is the short side. By adopting this special-shaped mounting hole design, the space can be effectively utilized, thereby saving the overall occupied space of the laser rangefinder 10.

[0077] Figure 6 It is a schematic structural diagram of the fourth laser rangefinder provided by the embodiment of the present application. Among them, Figure 6 in (a), the transmitting module 11 and the receiving module 12 are arranged adjacent to each other in the first direction; Figure 6 in (b), the transmitting module 11 and the receiving module 12 are arranged at intervals in the first direction, and the length of the mounting hole in the direction perpendicular to the arc surface is greater than the length of the mounting hole in the direction tangent to the arc surface; Figure 6 in (c), the transmitting module 11 and the receiving module 12 are arranged at intervals in the first direction, and the length of the mounting hole in the direction perpendicular to the arc surface is less than the length of the mounting hole in the direction tangent to the arc surface.

[0078] See Figure 6 As shown, in Figure 6 in (a), the transmitting module 11 and the receiving module 12 are integrated. The disadvantage of this method is that the transmitting module 11 and the receiving module 12 are very close, and the interference signals generated by the transmitting module 11 will affect the receiving module 12, and the optical axis calibration between the transmitting module 11, the receiving module 12 and the optical structure is more troublesome. The transmitting module 11 and the receiving module 12 protrude on the optical structure, and the overall coordination is poor and not beautiful enough. In Figure 6 in (b) and (c), the transmitting module 11 and the receiving module 12 are separated, which can solve the problem of signal interaction between the transmitting module 11 and the receiving module 12. Further, Figure 6 in (c) compared with Figure 6 in (b), the length of the mounting hole in the direction perpendicular to the arc surface is less than the length of the mounting hole in the direction tangent to the arc surface, so that the required area of the arc-shaped connecting member 13 is the smallest. Thus, on the one hand, materials can be saved and the preparation cost can be reduced, and on the other hand, the space utilization rate of the laser rangefinder 10 can be improved, space can be saved, and the aesthetic degree of the appearance can be improved.

[0079] In some embodiments, the receiving module 12 can be installed in the mounting hole through a connecting member. The connecting member can be a screw. When the receiving module 12 is installed in the mounting hole, it can receive the echo beam in the second direction.

[0080] In the embodiments of the present application, the second mounting portion is a mounting hole with a special shape, which can achieve the purpose of saving the occupied area.

[0081] In some embodiments, the arc-shaped connecting member 13 has an assembly hole 136 penetrating along the transmission direction and / or an assembly hole 136 penetrating along any direction perpendicular to the transmission direction. The connecting member passes through the assembly hole 136 to fixedly connect the arc-shaped connecting member 13 to the arc surface of the optical structure.

[0082] In a second aspect, the present application provides an optical instrument. Figure 7 It is a schematic structural diagram of the first optical instrument provided by the embodiments of the present application. Figure 8 It is a schematic structural diagram of the second optical instrument provided by the embodiments of the present application. Figure 9 It is a schematic structural diagram of the third optical instrument provided by the embodiments of the present application. Figure 10 It is a schematic structural diagram of the fourth optical instrument provided by the embodiments of the present application. Refer to Figures 1 to 10 As shown, the optical instrument 20 includes: a lens, a lens barrel, and the laser rangefinder 10 as described in any one of the embodiments of the first aspect. Among them, the lens is directly or indirectly connected to the lens barrel. The lens and the lens barrel can be coaxially arranged. Here, the lens and the lens barrel can be combined to form the optical structure with an arc surface described in the first aspect. Among them, the outer surface of the lens barrel is equivalent to the outer arc surface of the optical structure, and the inner surface of the lens barrel is equivalent to the inner arc surface of the optical structure.

[0083] It should be noted that the specific structure and composition of the laser rangefinder 10 can be referred to the description in any one of the embodiments of the first aspect. For the sake of brevity of the specification, it will not be repeated here.

[0084] In some embodiments, the lens barrel can include a first lens barrel 21 and a second lens barrel 22. The first lens barrel 21 is directly connected to the lens, and the second lens barrel 22 can be connected to the lens by connecting the first lens barrel 21. In some embodiments, there can be one or more first lens barrels 21 in the optical instrument 20, and there can be one or more second lens barrels 22, that is, the optical instrument 20 includes multiple arc surfaces, and the arc-shaped connecting member 13 of the laser rangefinder 10 can be assembled on any one or more of the multiple arc surfaces.

[0085] Next, taking the arc-shaped connecting member 13 assembled on the Figure 7 outer arc surface 211 of the first lens barrel 21 shown as an example, the optical instrument 20 will be described.

[0086] The optical instrument 20 may include a lens and a first barrel 21, and the lens is assembled in the first barrel 21. The arc-shaped connecting member 13 in the laser rangefinder 10 may be fixedly connected to the outer arc surface 211 of the first barrel 21. The radius of curvature of the arc surface of the arc-shaped connecting member 13 is the same as that of the outer arc surface 211, and the distance from any position point on the arc surface to the outer arc surface 211 is the same; the transmission direction of the laser beam emitted by the receiving module 12 in the laser rangefinder 10 is the same as the direction of the principal optical axis formed by the lens.

[0087] It can be understood that after the arc-shaped connecting member 13 is fixedly connected to the outer arc surface 211 (outer surface) of the first barrel 21, the transmitting module 11 and the receiving module 12 can indirectly connect to the first barrel 21. When the radius of curvature of the arc surface of the arc-shaped connecting member 13 is the same as that of the outer arc surface 211 and the distance from any position point on the arc surface to the outer arc surface 211 is the same, the arc surface of the arc-shaped connecting member 13 is arranged parallel to the outer arc surface 211, or the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13 is the same as the direction of the chord corresponding to the outer arc surface 211. Thus, when a principal optical axis is formed by the lens in the first barrel 21 and the direction of the principal optical axis is perpendicular to the direction of the chord corresponding to the outer arc surface 211, the direction of the principal optical axis can be perpendicular to the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13. Also, since the transmission direction of the laser beam emitted by the transmitting module 11 is perpendicular to the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13, the transmission direction of the laser beam emitted by the transmitting module 11 can be in the same direction as the direction of the principal optical axis.

[0088] It can be understood that when the transmission direction of the laser beam emitted by the transmitting module 11 is in the same direction as the direction of the principal optical axis formed by the lens, the transmitting module 11 and the principal optical axis of the lens in the first barrel 21 can be coaxially arranged. This setting method can ensure that the laser beam can be accurately and efficiently transmitted along the direction of the principal optical axis, reduce the offset and loss of the laser beam, and no additional adjustment or calibration is required, thereby ensuring the precise cooperation between the laser rangefinder 10 and the optical structure and realizing the accuracy and precision of ranging.

[0089] Next, taking the arc-shaped connecting member 13 assembled in Figure 8 the inner arc surface 221 of the second barrel 22 shown as an example, the optical instrument 20 will be described.

[0090] The optical instrument 20 may include a lens, a first barrel 21, and a second barrel 22. The lens is assembled in the first barrel 21. The second barrel may be assembled on the peripheral side of the first barrel 21 and is coaxially arranged with the lens assembled in the first barrel 21. The arc-shaped connecting member 13 in the laser rangefinder 10 may be fixedly connected to the inner arc surface 221 of the second barrel 22. The radius of curvature of the arc surface of the arc-shaped connecting member 13 is the same as that of the inner arc surface 221, and the distance from any position point on the arc surface to the inner arc surface 221 is the same. The transmission direction of the laser beam emitted by the receiving module 12 in the laser rangefinder 10 is the same as the direction of the principal optical axis formed by the lens.

[0091] It can be understood that after the arc-shaped connecting member 13 is fixedly connected to the inner arc surface 221 (inner surface) of the second barrel 22, the transmitting module 11 and the receiving module 12 can be indirectly connected to the second barrel 22. When the radius of curvature of the arc surface of the arc-shaped connecting member 13 is the same as that of the inner arc surface 221 and the distance from any position point on the arc surface to the inner arc surface 221 is the same, the arc surface of the arc-shaped connecting member 13 is parallel to the inner arc surface 221, or the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13 is the same as the direction of the chord corresponding to the inner arc surface 221. Thus, when a principal optical axis is formed by the lens in the first barrel 21 and the direction of the principal optical axis is perpendicular to the direction of the chord corresponding to the inner arc surface 221, the direction of the principal optical axis can be perpendicular to the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13. Also, since the transmission direction of the laser beam emitted by the transmitting module 11 is perpendicular to the direction of the chord corresponding to the arc surface of the arc-shaped connecting member 13, the transmission direction of the laser beam emitted by the transmitting module 11 can be in the same direction as the direction of the principal optical axis. In this way, it is ensured that the laser rangefinder 10 is precisely matched with the optical structure, and the ranging accuracy and precision are achieved.

[0092] Next, taking the arc-shaped connecting member 13 assembled on Figure 9 the inner arc surface 221 in the second barrel 22 shown as an example, the optical instrument 20 will be described.

[0093] The optical instrument 20 may include a lens, a first barrel 21, and a second barrel 22. The lens is assembled in the first barrel 21. The second barrel may be assembled on the peripheral side of the first barrel 21 and is coaxially arranged with the lens assembled in the first barrel 21. Figure 9 Differing from Figure 8 the structure shown, the assembly position between the second barrel 22 and the first barrel 21 is different. Figure 8 The second barrel 22 shown can drive the laser rangefinder 10 to be located on the peripheral side of the first barrel 21. Figure 9 The second barrel 22 shown can drive the laser rangefinder 10 to be located at the end of the first barrel 21 (the end close to the objective lens of the lens). Figure 9The second lens barrel 22 shown can also drive the laser rangefinder 10 and the first lens barrel 21 to at least partially coincide in the optical axis direction.

[0094] In this way, the transmitting module 11 and the receiving module 12 in the laser rangefinder 10 can at least partially coincide with the lens. Since the transmitting module 11 and the receiving module 12 are located at positions away from the principal optical axis of the lens, at least partial coincidence of the transmitting module 11 and the receiving module 12 with the lens will not affect the use of the lens.

[0095] In some embodiments, the optical instrument 20 may further include: an infrared module, which is disposed in the first lens barrel and is used to generate infrared light and transmit the infrared light to the outside through the lens. When the transmitting module 11 and the receiving module 12 at least partially coincide with the lens, it does not affect the normal use of the principal optical axis of the lens by the infrared module.

[0096] It should be noted that the laser rangefinder 10 can be assembled at any arc surface of the first lens barrel 21 and the second lens barrel 22, and the embodiments of the present application do not make specific limitations on this.

[0097] It should be noted that according to the description in the embodiments of the first aspect, the transmission direction of the laser beam emitted by the transmitting module 11 is the second direction. The transmitting module 11 and the receiving module 12 are spaced apart in the first direction.

[0098] In some embodiments, the fixed connection manner of the arc-shaped connecting member 13 to the lens barrel can be set according to actual needs, and the embodiments of the present application do not make limitations on this. Exemplarily, the arc-shaped connecting member 13 can be fixedly connected to the lens barrel through a connecting member.

[0099] In the embodiments of the present application, the arc-shaped connecting member can space the transmitting module and the receiving module apart in the first direction and enable the transmitting module to emit a laser beam transmitted in the second direction. The arc-shaped connecting member can also fixedly connect the lens barrels with the same radius of curvature and make the distance from any position point on the arc surface of the arc-shaped connecting member to the lens barrel the same. In this way, on the one hand, the separation of the transmitting module and the receiving module can be realized, avoiding signal interference caused by the adjacent arrangement of the transmitting module and the receiving module; on the other hand, when the arc-shaped connecting member is connected to the lens barrel, the direction of the principal optical axis of the optical structure is also the second direction, so as to ensure that the laser beam can be transmitted along the direction of the principal optical axis, improving the accuracy and precision of distance measurement.

[0100] In some possible implementation manners, as shown in Figures 1 to 10 the arc-shaped connecting member 13 has an assembly hole 136 penetrating along the transmission direction and / or an assembly hole 136 penetrating along any direction perpendicular to the transmission direction. The optical instrument further includes: a connecting member. Wherein, the connecting member passes through the assembly hole 136 to fixedly connect the arc-shaped connecting member 13 to the lens barrel.

[0101] Understandably, the arc-shaped connecting member 13 may have an assembly hole 136 penetrating along the second direction and / or an assembly hole 136 penetrating along any direction perpendicular to the second direction. In this way, the connecting member in the optical instrument can pass through the assembly hole 136 to fixedly connect the arc-shaped connecting member 13 to the lens barrel.

[0102] In some embodiments, the connecting member may be a threaded connecting member, a card slot connecting member, or a connecting member with other special designs. Among them, the threaded connecting member realizes the fixed connection between the arc-shaped connecting member 13 and the lens barrel by matching the external thread of the threaded connecting member with the internal thread of the lens barrel or the arc-shaped connecting member 13. The card slot connecting member has a card slot structure and can cooperate with the corresponding tenons on the lens barrel or the arc-shaped connecting member 13 to realize the fixed connection between the arc-shaped connecting member 13 and the lens barrel. The connecting member with special design, such as the connecting member with a magnetic member, can realize the fixed connection between the arc-shaped connecting member 13 and the lens barrel through magnetic adsorption.

[0103] In the embodiment of the present application, by providing the assembly hole and the connecting member, the stable connection between the arc-shaped connecting member and the lens barrel can be ensured.

[0104] In some possible implementation manners, as shown in Figures 1 to 10 FIG. 24, the optical instrument 20 may further include: an annular rubber sleeve 24. The annular rubber sleeve 24 has an annular through hole penetrating along the transmission direction. Among them, the lens barrel passes through the annular through hole, and the annular rubber sleeve 24 is assembled on the outer periphery of the lens barrel and the annular rubber sleeve 24 wraps the laser rangefinder 10.

[0105] Understandably, the annular rubber sleeve 24 is a rubber sleeve with an annular through hole, and its design allows the lens barrel to pass through the through hole. In this way, the annular rubber sleeve 24 can be assembled on the outer periphery of the lens barrel and wrap the laser rangefinder 10, so as to further fix the laser rangefinder 10 and the lens barrel and improve the aesthetic appearance of the optical instrument 20. At the same time, because the annular rubber sleeve 24 has good elasticity, the annular rubber sleeve 24 can also provide additional protection, shock absorption or sealing functions for the laser rangefinder 10 and the lens barrel.

[0106] In some embodiments, the material of the annular rubber sleeve 24 may be natural rubber, synthetic rubber, etc. The synthetic rubber is, for example, silica gel, nitrile rubber, neoprene, etc.

[0107] In the embodiment of the present application, by providing the annular rubber sleeve, the laser rangefinder is protected from external impacts or scratches, the lens inside the optical instrument is protected from damage, and dust, moisture or other pollutants can also be prevented from entering the inside of the optical instrument, thereby ensuring the normal operation of the instrument.

[0108] In some possible implementation manners, as shown in Figures 1 to 10As shown, the optical instrument 20 may further include: a main processor and a signal transmission line 23; one end of the signal transmission line 23 is electrically connected to the main processor, and the other end is electrically connected to the laser rangefinder 10.

[0109] It can be understood that the optical instrument 20 can be a device integrating devices such as a lens, a laser rangefinder 10, and an infrared module. Among them, the lens is used for optical imaging. The laser rangefinder 10 is used for optical ranging, and the infrared module is used for optical detection. Thus, a main processor and a signal transmission line 23 can also be configured in the optical instrument 20 to manage various devices in the optical instrument 20.

[0110] It can be understood that the main processor is the core control unit in the optical instrument 20, responsible for processing data, executing algorithms, controlling various functions of the instrument, etc. The main processor can be composed of ARM and FPGA, or can be a SOC processor. The signal transmission line 23 is used inside the optical instrument 20 to realize the transmission of signals and data between the main processor and other devices. The combined use of the main processor and the signal transmission line 23 enables the optical instrument 20 to have more advanced data processing and control capabilities.

[0111] In some embodiments, the main processor can control the emission module 11 and / or the receiving module 12 in the laser rangefinder 10 to work through the signal transmission line 23. The main processor can also receive the ranging result of the target object to be measured output by the receiving module 12 in the laser rangefinder 10 through the signal transmission line 23.

[0112] It can be understood that the main processor sends a control signal to the emission module 11 through the signal transmission line 23. After receiving the control signal, the emission module 11 generates and emits a laser beam according to the instruction. These laser beams propagate to the surface of the target object to be measured. When the echo beam is reflected from the surface of the target object to be measured, the main processor controls the receiving module 12 through the signal transmission line 23 to capture these echo beams and convert them into electrical signals. These electrical signals can be transmitted back to the main processor through the signal transmission line 23.

[0113] In one embodiment, the main processor sends a control signal to the data processing component 122 in the laser rangefinder 10 through the signal transmission line 23, and the data processing component 122 controls the emission module 11 to emit a laser beam. In one embodiment, the receiving module 12 can generate the ranging result of the target object to be measured according to the electrical signal obtained from the echo signal, and the main processor controls to receive this ranging result through the signal transmission line 23.

[0114] It can be understood that the main processor is used to make the optical instrument 20 have a higher level of automation and intelligence. In practical applications, according to the different application scenarios of the optical instrument 20, different control methods can be set for the main processor to execute, and the embodiments of the present application do not make specific limitations on this.

[0115] In some possible embodiments, referring to Figures 1 to 10 as shown, the optical instrument 20 may further include: a signal output module. The signal output module is electrically connected to the main processor. The main processor is further configured to merge and process the ranging result and the imaging result of the lens, and output the processed ranging result to the signal output module; the signal output module is configured to receive the processed ranging result and output the processed ranging result to the user.

[0116] It can be understood that the signal output module is electrically connected to the main processor and is configured to receive and output the processed ranging result. Specifically: after the main processor processes the ranging result obtained by the laser rangefinder 10 and the imaging result of the lens, it will send the merged and processed data to the signal output module. The signal output module then outputs the processed ranging result to the user.

[0117] It can be understood that the main processor can be responsible for the task of data processing. The main processor can merge and process the ranging result and the imaging result generated by the lens to generate composite data including distance information and image information, so as to provide more comprehensive and accurate information.

[0118] Exemplarily, when the laser rangefinder 10 and the lens work simultaneously, the main processor can analyze the ranging result obtained by the laser rangefinder 10 to obtain the distance information of the target object to be measured. At the same time, the main processor can analyze the imaging result of the lens to extract information such as the contour of the target object to be measured. Then, the main processor will use a spatial matching algorithm to match the distance information in the ranging result with the contour in the imaging result, so as to determine the specific position of the target object to be measured in the image. Finally, the main processor will send the specific position of the target object to be measured in the image to the signal output module. The signal output module shows the image, the target object to be measured in the image, and the specific position of the target object to be measured to the user.

[0119] In the embodiments of the present application, the optical instrument can obtain more comprehensive and accurate observation data and display it to the user through the signal output module, so as to meet the user's usage requirements.

[0120] In the embodiments of the present application, the arc-shaped structural member makes the optical axis calibration between the laser rangefinder and the lens barrel simpler and more effective. Moreover, during the process of fixing the laser rangefinder to the lens barrel, the optical axis can be further calibrated by adjusting the depth of the locking screw, so as to solve the problem that it is difficult to calibrate the optical axis between the ranging module and the lens barrel in the related art. The signal interaction between the transmitting module and the receiving module is carried out by means of a flexible cable. In the later stage, an automatic calibration method can be adopted to calibrate the signal delay, so that the receiving circuit signal in the receiving module is cleaner and the whole machine is more stable.

[0121] Those skilled in the art can understand that the sequence numbers of the steps in the above embodiments do not indicate the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0122] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A laser rangefinder, characterized in that, Comprising: A transmitting module, a receiving module, and an arc-shaped connecting member; wherein, the arc-shaped connecting member connects the transmitting module and the receiving module, and the transmitting module and the receiving module are spaced apart in a first direction; the first direction is the direction of the chord corresponding to the arc surface of the arc-shaped connecting member; the lengths of the paths of the transmitting module and the receiving module to the center of curvature of the arc surface are the same; The transmitting module is configured to generate and transmit a laser beam transmitted in a second direction, wherein the second direction is perpendicular to the first direction; The receiving module is configured to receive the echo beam reflected by the target object to be measured from the laser beam, and obtain the ranging result of the target object to be measured according to the echo beam; The arc-shaped connecting member can be connected to an optical structure having an arc surface, so that the transmitting module and the receiving module are connected to the optical structure, wherein the radius of curvature of the arc surface is the same as the radius of curvature of the arc surface, and the distance from any position point on the arc surface to the arc surface is the same.

2. The laser rangefinder according to claim 1, wherein The first end of the arc-shaped connecting member is connected to the transmitting module, and the second end of the arc-shaped connecting member is connected to the receiving module; a wiring path communicating the first end and the second end is provided in the arc-shaped connecting member, wherein the first end and the second end are the two ends of the arc-shaped connecting member in the first direction; The laser rangefinder further comprises: a wiring assembly, wherein the wiring assembly is accommodated in the wiring path, and one end is electrically connected to the transmitting module and the other end is electrically connected to the receiving module.

3. The laser rangefinder according to claim 2, wherein, The wiring assembly includes: a power line and a control line; The transmitting module includes: a transmitting component and a power supply; the transmitting component is configured to generate and transmit the laser beam; the power supply is configured to supply power to the transmitting component; The receiving module includes: a receiving component and a data processing component; the receiving component is configured to receive the echo beam reflected by the target object to be measured from the laser beam; the data processing component is configured to obtain the ranging result of the target object to be measured according to the echo beam; Wherein, the power supply is further configured to supply power to the receiving component and the data processing component through the power line; the data processing component is further configured to control the transmitting component to emit the laser beam through the control line.

4. The laser rangefinder according to claim 1, characterized in that, The arc-shaped connecting member is a circular ring; Wherein, the first end of the circular ring has a first mounting portion, and the transmitting module is assembled in the first mounting portion; the second end of the circular ring has a second mounting portion, and the receiving component is assembled in the second mounting portion; the assembly area of the first mounting portion is smaller than the assembly area of the second mounting portion.

5. The laser rangefinder according to claim 4, characterized in that, The second mounting portion is a mounting hole penetrating along the second direction; Wherein, the length of the mounting hole in the direction perpendicular to the arc surface is smaller than the length of the mounting hole in the direction tangent to the arc surface.

6. An optical instrument, characterized in that, Comprising: A lens; A lens barrel connected to the lens, wherein the lens and the lens barrel are coaxially arranged; The laser rangefinder according to any one of claims 1 to 5; Among them, the arc-shaped connecting piece in the laser rangefinder is fixedly connected to the arc surface of the lens barrel; the radius of curvature of the arc surface of the arc-shaped connecting piece is the same as that of the arc surface, and the distance from any position point on the arc surface to the arc surface is the same; the transmission direction of the laser beam emitted by the receiving module in the laser rangefinder is the same as the main optical axis direction of the lens.

7. The optical instrument according to claim 6, characterized in that, The arc-shaped connecting piece has an assembly hole penetrating along the transmission direction and / or an assembly hole penetrating along any direction perpendicular to the transmission direction; The optical instrument further includes: a connecting piece, wherein the connecting piece passes through the assembly hole to fixedly connect the arc-shaped connecting piece to the lens barrel.

8. The optical instrument according to claim 6, characterized in that, The optical instrument further includes: an annular rubber sleeve, and the annular rubber sleeve has an annular through hole penetrating along the transmission direction; Among them, the lens barrel passes through the annular through hole, and the annular rubber sleeve is assembled on the outer periphery of the lens barrel and the annular rubber sleeve wraps the laser rangefinder.

9. The optical instrument according to claim 6, characterized in that, The optical instrument further includes: a main processor and a signal transmission line; one end of the signal transmission line is electrically connected to the main processor, and the other end is electrically connected to the laser rangefinder; Among them, the main processor is used to control the operation of the emission module and / or the receiving module in the laser rangefinder through the signal transmission line; the main processor is further used to receive the ranging result of the target object to be measured output by the receiving module through the signal transmission line.

10. The optical instrument according to claim 9, characterized in that, The optical instrument further includes: a signal output module; the signal output module is electrically connected to the main processor; Among them, the main processor is further used to perform a merging process on the ranging result and the imaging result of the lens, and output the processed ranging result to the signal output module; The signal output module is used to receive the processed ranging result and output the processed ranging result to the user.

Images