Multi-mode laser measurement device and laser ranging method

Abstract

Provided in the present description is a multi-mode laser measurement device. The measurement device comprises a housing and a laser measurement assembly. When in operation, a first transmitter in the laser measurement assembly transmits to a target object a first transmitted laser beam of a first wavelength, the first transmitted laser beam being reflected by the target object to form a first reflected laser beam; when in operation, a second transmitter transmits to the target object a second transmitted laser beam of a second wavelength, the second transmitted laser beam being reflected by the target object to form a second reflected laser beam, and the second wavelength being different from the first wavelength; when in operation, a receiving module in the laser measurement assembly receives a reflected laser beam and measures a target distance between the laser measurement device and the target object on the basis of the reflected laser beam, the reflected laser beam comprising the first reflected laser beam and / or the second reflected laser beam; when in operation, a photosensitive element can detect the laser of the first wavelength and the laser of the second wavelength.

Description

Multi-mode laser measuring device and laser ranging method

[0001] This application claims priority to the following Chinese patent applications: Chinese patent application No. 2024100862647, filed with the State Intellectual Property Office of China on January 22, 2024, entitled “A multi-mode laser measuring device and laser ranging method”; Chinese patent application No. 2024201456909, filed with the State Intellectual Property Office of China on January 20, 2024, entitled “A laser measuring device”, the entire contents of which are incorporated herein by reference; Chinese patent application No. 2024201470997, filed with the State Intellectual Property Office of China on January 20, 2024, entitled “A laser measuring device for golf”, the entire contents of which are incorporated herein by reference; Chinese patent application No. 2024201535027, filed with the State Intellectual Property Office of China on January 20, 2024, entitled “A laser measuring device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of measurement technology, and in particular to a multi-mode laser measurement device and a laser ranging method. Background Art

[0003] With the rapid development of laser detection technology, it has also been widely used for distance measurement. Rangefinders using laser detection technology are now used by users for distance measurement in many scenarios. Different users have different distance measurement requirements in different scenarios. For example, users may need to perform long-distance measurements, which can range from several kilometers to several tens of meters. Another example is close-range measurements, which can range from a few meters to tens of meters. Compared to long-range measurements, close-range measurements require higher accuracy. Because close-range and long-range measurements use different laser wavelengths, laser measurement devices that integrate both close-range and long-range functions typically require two receivers to receive the laser light from each module. These two receivers occupy a significant amount of space within the rangefinder, making the overall size of the rangefinder larger and less convenient for users. Summary of the Invention

[0004] In a first aspect, the present application provides a multi-mode laser measuring device using only a single photosensitive element. The embodiment of the present application provides a multi-mode laser measuring device. The laser measuring device includes a first transmitting module, a second transmitting module and a receiving module; the first transmitting module includes a first transmitter, which is configured to transmit a first transmitting laser beam having a first wavelength toward a target object when in operation, and the first transmitting laser beam is reflected by the target object to become a first reflected laser beam; the second transmitting module includes a second transmitter, which is configured to transmit a second transmitting laser beam having a second wavelength toward the target object when in operation, and the second transmitting laser beam is reflected by the target object to become a second reflected laser beam, and the second wavelength is different from the first wavelength; and the receiving module receives the reflected laser beam when in operation, and measures the target distance between the laser measuring device and the target object based on the reflected laser beam, wherein the reflected laser beam includes the first reflected laser beam and / or the second reflected laser beam, and the receiving module includes a photosensitive element, which can detect lasers of the first wavelength and the second wavelength when in operation.

[0005] In a second aspect, the present application provides a multi-mode laser ranging method, applicable to any one of the laser measuring devices described in the first aspect. The ranging method includes: activating a second transmitting module of the laser measuring device to emit a second transmitting laser beam and a receiving module to receive a second reflected laser beam reflected from a target object; obtaining a second distance based on the second reflected laser beam; and determining whether to enable multi-mode operation based on the second reflected laser beam and the second distance, wherein in the multi-mode, the laser measuring device activates a first transmitting module to emit a first transmitting laser beam and a receiving module to receive the first reflected laser beam reflected from the target object; obtaining a first distance based on the first reflected laser beam; and determining and outputting the target distance based on the first distance and the second distance.

[0006] In a third aspect, the present application provides another multi-mode laser ranging method, applicable to any of the laser measuring devices described in the first aspect. The ranging method includes obtaining a selection mode input by a user, the selection mode being a first mode or a second mode, wherein in the first mode, a first transmitting module emits a first transmitting laser beam, and in the second mode, a second transmitting module emits a second transmitting laser beam; measuring a target distance between the laser measuring device and a target object based on the selection mode; and outputting the target distance.

[0007] In summary, this specification provides a multi-mode laser measurement device using a single photosensitive element. By emitting a first transmitted laser beam and a second transmitted laser beam, the measurement device can achieve integrated measurement capabilities, from close-range high-precision measurement to long-range measurement, thereby meeting the user's diverse measurement needs. Furthermore, the first wavelength of the first transmitted laser beam and the second wavelength of the second transmitted laser beam are both within the sensing band of a single photosensitive element. This is because, by providing only a single photosensitive element, the receiving module can simultaneously receive the first and second reflected laser beams during operation, thereby reducing the space occupied by the distance measurement components within the measurement device.

[0008] Other features of the multi-mode laser measurement device and laser ranging method provided in this specification are partially outlined in the following description. The following figures and examples will be readily apparent to those skilled in the art based on the description. The inventive aspects of the multi-mode laser measurement device and laser ranging method provided in this specification can be fully explained through practice or use of the methods, devices, and combinations provided in the following detailed examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of this specification, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0010] FIG1 shows a schematic diagram of the appearance and structure of a multi-mode laser measurement device provided according to some embodiments of this specification;

[0011] FIG2 shows an optical structure diagram of an internal measurement device according to some embodiments of this specification;

[0012] FIG3 shows details of the laser measurement assembly in the optical structure;

[0013] FIG4 shows an internal optical path diagram of a light splitting module of a measurement device provided according to some embodiments of this specification;

[0014] FIG5 shows another measurement optical path and observation optical path diagram provided according to some embodiments of this specification;

[0015] FIG6 shows a schematic structural diagram of a laser measurement device with dual display modules according to some embodiments of this specification;

[0016] FIG7 shows a flow chart of a laser ranging method provided according to some embodiments of this specification;

[0017] FIG8 shows a flow chart of another laser ranging method provided according to some embodiments of this specification;

[0018] FIG9 shows a schematic structural diagram of a measurement device according to some embodiments of this specification;

[0019] FIG10 shows a schematic diagram of an exploded structure of a laser measurement device according to some embodiments of this specification;

[0020] FIG11 is a schematic structural diagram of a second end of an inner housing and an eyepiece assembly according to some embodiments of this specification;

[0021] FIG12 shows a schematic structural diagram of an adjustment knob provided according to some embodiments of this specification;

[0022] FIG13 shows a schematic structural diagram of the connection between an inner housing, an eyepiece assembly, and an adjustment knob according to some embodiments of this specification;

[0023] FIG14 shows a front view of a laser measurement device according to some embodiments of this specification;

[0024] FIG15 shows a cross-sectional view of FIG14 along section BB;

[0025] FIG16A shows a schematic structural diagram of a measuring device equipped with a first magnetic component according to some embodiments of this specification;

[0026] FIG16B shows a schematic structural diagram of a laser measurement device with an auxiliary housing installed at the bottom according to some embodiments of this specification;

[0027] FIG17A shows a schematic structural diagram of a measuring device with magnetic components installed on the bottom and sides according to some embodiments of this specification;

[0028] FIG17B shows a schematic structural diagram of a measuring device with auxiliary housings installed on the bottom and sides according to some embodiments of this specification;

[0029] FIG18 shows an exploded view of a laser measurement device according to some embodiments of this specification;

[0030] FIG19 shows a rear view of a switch key and an output end cover connected according to some embodiments of this specification;

[0031] FIG20 shows a cross-sectional view AA of FIG19;

[0032] FIG21A shows a front view of a measuring device in a working state according to some embodiments of this specification;

[0033] FIG21B shows a left side view of a measuring device in working state according to some embodiments of this specification;

[0034] FIG21C shows a right side view of a measuring device in working state according to some embodiments of this specification;

[0035] FIG21D shows a top view of a measuring device in operation according to some embodiments of this specification;

[0036] FIG22A shows an exploded view of a laser measurement device according to some embodiments of the present specification;

[0037] FIG22B shows a right side view of a laser measuring device provided by some embodiments of this specification, with a switch in a first position in a working state;

[0038] FIG23 shows a rear view of a switch key 620 b according to some embodiments of the present disclosure; and

[0039] FIG. 24 shows a top view of a self-locking mechanism according to some embodiments of the present specification. DETAILED DESCRIPTION

[0040] The following description provides specific application scenarios and requirements for this specification, with the goal of enabling those skilled in the art to make and use the contents of this specification. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but is intended to be accorded the broadest scope consistent with the claims.

[0041] The terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. For example, as used herein, the singular forms "a," "an," and "the" may also include the plural forms unless the context clearly indicates otherwise. When used in this specification, the terms "comprise," "include," and / or "contain" are intended to refer to the presence of the associated integers, steps, operations, elements, and / or components, but do not preclude the presence of one or more other features, integers, steps, operations, elements, components, and / or groups or the addition of other features, integers, steps, operations, elements, components, and / or groups in the system / method.

[0042] In this application, "X includes at least one of A, B, or C" means that X includes at least A, or X includes at least B, or X includes at least C. In other words, X can include only any combination of A, B, and C, or it can include any combination of A, B, and C as well as other possible contents / elements. The arbitrary combination of A, B, and C can be A, B, C, AB, AC, BC, or ABC.

[0043] In this application, unless explicitly stated otherwise, the association relationship between structures can be a direct association relationship or an indirect association relationship. For example, when describing "A is connected to B", unless it is explicitly stated that A is directly connected to B, it should be understood that A can be directly connected to B or indirectly connected to B; for another example, when describing "A is above B", unless it is explicitly stated that A is directly above B (AB are adjacent and A is above B), it should be understood that A can be directly above B or indirectly above B (AB is separated by other elements and A is above B). And so on.

[0044] These and other features of this specification, as well as the operation and function of the associated elements of the structure, and the economical assembly and manufacture of the components, can be significantly improved with consideration of the following description. The description also includes all figures and text referenced in the drawings herein, all of which form a part of this specification. However, it should be expressly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0045] The present application provides a multi-mode laser measurement device using a single photosensitive element, which can not only meet the user's measurement needs for different distances, but also reduce the space occupied by the distance measurement component in the laser measurement device.

[0046] Figure 1 shows a schematic diagram of the appearance and structure of a multi-mode laser measuring device 001 provided according to some embodiments of this specification. The multi-mode laser measuring device 001 (hereinafter referred to as measuring device 001) can be the small, handheld measuring device 001 shown in Figure 1. For example, measuring device 001 can be used in golf. Golf is an outdoor recreational sport played on a lawn, where different clubs are used to hit a ball into a designated hole according to certain rules. When playing golf, users often need to use measuring device 001 to measure the distance to an object, such as the hole. Because golf courses are spacious, users often need to perform long-range measurements before hitting the ball on the green. After hitting the green, users use a putter to push the ball into the hole. Since the distance between the ball and the hole is now significantly shortened, users use close-range distance measurement. In this case, users have higher requirements for close-range distance measurement accuracy to ensure they can accurately put the ball into the hole. This measuring device 001 for golf needs to be compact, lightweight, and easy to carry.

[0047] As shown in Figure 1, measuring device 001 may include a housing 200 and a laser measurement assembly 400 (hereinafter referred to as measurement assembly 400). In some embodiments, measuring device 001 may also include a telescope assembly 500. In some embodiments, measuring device 001 may also include a switch assembly 600. In some embodiments, measuring device 001 may also include a diopter switch. In some embodiments, measuring device 001 may also include a first magnetic assembly.

[0048] The housing 200 can serve as the mounting base for the measuring device 001. Other components of the measuring device 001 (such as the measuring assembly 400, the telescope assembly 500, the switch assembly 600, etc.) can be mounted using the housing 200 as a carrier. The housing 200 can have any shape to accommodate the mounting of other components. It can also be ergonomically designed for user convenience. The housing 200 can be made of any material, such as metal, plastic, polymer, rubber, etc. This specification does not limit the shape or material of the housing 200. The housing 200 can include a first end 210 and a second end 220. The first end 210 and the second end 220 can be respective ends of the housing 200. For example, the first end 210 and the second end 220 can be two ends of the housing 200 located along the laser emission direction. The first end 210 can be the laser emission end of the measuring device 001. The second end 220 can be positioned opposite the first end 210.

[0049] The measurement assembly 400 can be used to measure distance. In some embodiments, in addition to distance measurement, the measurement assembly 400 can also be used to measure slope. The measurement assembly 400 can be installed within the housing 200. When measuring distance, the measurement assembly 400 can emit a laser beam toward the exterior of the housing 200. The laser beam is reflected by a target object and then received by the measurement assembly 400. The laser measurement assembly 400 compares the emitted laser beam with the received laser beam to determine the distance between the target object and the laser measurement assembly 400. Arrow 1 in Figure 1 indicates the direction of laser beam emission, and arrow 2 indicates the direction of laser beam reception.

[0050] Figure 2 shows an optical structure diagram of a measuring device 001 according to some embodiments of the present disclosure. Figure 3 shows a detailed diagram of the measuring component 400 in the structure. The measuring component 400 includes a first transmitting module 410, a second transmitting module 420, and a receiving module 430.

[0051] The first transmitting module 410 includes a first transmitter 411. The first transmitter 411 is configured to transmit a first transmitted laser beam having a first wavelength toward a target object during operation. The target object may be an object whose distance to the user is desired. For example, on a golf course, the target object may be a flagpole inserted in the center of a hole to mark the hole's location. For example, the first transmitter 411 may be a laser diode capable of emitting laser light of a first wavelength. The first transmitted laser beam is reflected by the target object to become a first reflected laser beam. In some embodiments, the first transmitting module 410 further includes a first lens group 412. The first transmitted laser beam passes through the first lens group 412 and is incident on the target object. The first lens group 412 can collimate the first transmitted laser beam so that the first transmitted laser beam emitted from the measuring device 001 is parallel light. The number of lenses included in the first lens group 412 can be selected based on the optical path requirements and the design of the product's internal space, and is not limited in this specification. For example, the first lens group 412 in FIG. 3 includes three lens units.

[0052] The second emission module 420 includes a second emitter 421. The second emitter 421 is configured to emit a second emission laser beam having a second wavelength toward the target object when in operation. For example, the second emitter 421 can be a laser diode capable of emitting laser light of a second wavelength. The second emission laser beam is reflected by the target object to become a second reflected laser beam. In some embodiments, the second emission module 420 also includes a second lens group 422. The second emission laser beam is incident on the target object after passing through the second lens group 422. The second lens group 422 can collimate the second emission laser beam so that the second emission laser beam emitted from the measuring device 001 is parallel light. This specification also does not limit the number of lenses included in the first lens group 412. For example, the second lens group 422 in Figure 3 includes 2 lens units.

[0053] After reaching a distant target, the transmitted laser beam reflects off the target and becomes reflected laser light. For example, the first transmitted laser beam reflects off the target and becomes the first reflected laser beam; the second transmitted laser beam reflects off the target and becomes the second reflected laser beam. If the measuring device 001 simultaneously transmits the first transmitted laser beam and the second transmitted laser beam, the reflected laser beam includes the first reflected laser beam and the second reflected laser beam. The reflected laser light then propagates back to the measuring device 001.

[0054] When in operation, receiving module 430 receives the reflected laser beam and measures the target distance between measurement device 001 and the target object based on the reflected laser beam. Specifically, receiving module 430 may receive only the first reflected laser beam when in operation. Receiving module 430 may also receive only the second reflected laser beam when in operation. Receiving module 430 may also receive both the first reflected laser beam and the second laser beam simultaneously when in operation.

[0055] The first wavelength of the first emitted laser beam is different from the second wavelength of the second emitted laser beam, so that the wavelengths of the first reflected laser beam and the second reflected laser beam are different. The measuring device 001 can use them to measure distances in different distance ranges.

[0056] For example, the first emitted laser beam can be a continuous laser. The first emitter 411 emits the first emitted laser beam. The receiving module 430 receives the first reflected laser beam reflected back by the target object. The receiving module 430 can measure the target distance based on the first reflected laser beam using a phase ranging method or a high-speed pulse phase ranging method. When the measuring device 001 uses the phase ranging method, the distance that can be measured is relatively close, but the ranging accuracy can reach the centimeter or even millimeter level. In some embodiments, the wavelength of the first emitted laser beam can be 650nm±10nm. In other embodiments, the wavelength of the first emitted laser beam can be 850nm±10nm.

[0057] The second transmitted laser beam can be a pulsed laser. Second transmitter 421 transmits the second transmitted laser beam. Receiver module 430 receives the second reflected laser beam reflected by the target object. Receiver module 430 measures the target distance using a time-of-flight ranging method based on the second reflected laser beam. When measuring device 001 uses a pulsed ranging method, it can measure longer distances, but the ranging accuracy is not as good as that of a phase-based ranging method. In some embodiments, the wavelength of the second transmitted laser beam can be 905 nm ± 10 nm.

[0058] As can be seen, the wavelengths of both the first and second laser beams are in the infrared band. Infrared light is less susceptible to interference from sunlight and is therefore commonly used for distance measurement. Furthermore, the technology used in measuring device 001, which can emit at 850nm and 905nm, respectively, is mature and low-cost. Because the two lasers use different wavelengths, their ranging principles do not interfere with each other, enabling integrated measurement from high-precision close-range measurements to long-range measurements, thus meeting the diverse measurement needs of users.

[0059] To receive the reflected laser beam, receiving module 430 includes a photosensitive element 431. Photosensitive element 431 is capable of detecting laser beams of a first wavelength and a second wavelength. In other words, the first wavelength of the first transmitted laser beam and the second wavelength of the second transmitted laser beam can both fall within the sensing band of the same photosensitive element 431. Thus, by providing a single photosensitive element 431, receiving module 430 can simultaneously receive both the first and second reflected laser beams, thereby reducing the space occupied by the laser measurement components within measurement device 001.

[0060] A single photosensitive element 431 has a peak sensitivity. That is, photosensitive element 431 has a high responsivity for some wavelengths and a low responsivity for other wavelengths. Therefore, to ensure that only a single photosensitive element 431 can simultaneously detect the first and second reflected laser beams, and that the wavelengths of the first and second transmitted laser beams can measure distances over different ranges, the first and second wavelengths can be selected to be close in the vicinity of the peak sensitivity, thereby ensuring that photosensitive element 431 has a high responsivity for both the first and second reflected laser beams. For example, the first wavelength of the first transmitted laser beam can be 850nm±10nm. The second wavelength of the second transmitted laser beam can be 905nm±10nm. The maximum difference between the first and second wavelengths is only 55nm. Accordingly, photosensitive element 431 can be selected with a peak sensing wavelength range of 840nm-915nm, ensuring a high responsivity within this range. For example, the responsivity of the photosensitive element within this range exceeds 50%. In some embodiments, receiving module 430 may further include a filter. The filter may be a broadband filter with a filtering band encompassing 840 nm to 915 nm. The filter may block light of other wavelengths and transmit only laser light with a wavelength of 840 nm to 915 nm, thereby enhancing the efficiency of photosensitive element 431 in receiving laser light in the ranging band.

[0061] Since the reflected laser beams received by the receiving module 430 are different, the measuring device 001 can use different modes to measure distance. In different modes, the range and measurement accuracy of the distance measurement by the measuring device 001 are different.

[0062] In the first mode, the first transmitting module 410 operates, emitting a first transmitted laser beam. The photosensitive element 431 detects the first reflected laser beam. The receiving module 430 measures the target distance based on the first reflected laser beam. For example, as previously described, the receiving module 430 measures the target distance based on a continuous laser beam of 850 nm ± 10 nm. In this mode, the measuring device 001 is in proximity measurement mode, corresponding to a target distance measurement range of 0 m to 50 m, with a measurement accuracy of ± 2.5 cm.

[0063] In the second mode, the second transmitting module 420 operates, emitting a second transmitted laser beam. The photosensitive element 431 is capable of detecting the second reflected laser beam. The receiving module measures the target distance based on the second reflected laser beam. For example, as previously described, the receiving module 430 measures the target distance based on a 905nm ± 10nm pulsed laser. In this mode, the measuring device 001 is in the distance measurement mode, corresponding to a target distance measurement range of greater than 50m and a measurement accuracy of ±45cm.

[0064] Depending on actual distance measurement requirements, the measuring device 001 can also have both the first mode and the second mode. Alternatively, when the measuring device 001 has both the first mode and the second mode, it can be considered that the measuring device 001 has a third mode. In the third mode, the measuring device 001 executes the first mode and the second mode simultaneously. That is, in the third mode, the first transmitting module 410 and the second transmitting module 420 operate simultaneously. The photosensitive element 431 simultaneously detects the first reflected laser beam and the second reflected laser beam. The receiving module 430 can measure the target distance based on the first reflected laser beam and the second laser beam. The operating mode of the measuring device 001 can be switched manually by the user. The measuring device 001 can also switch the operating mode automatically. The selection of the operating mode and the distance measurement method will be described later.

[0065] Returning to Figure 2 , receiving module 430 also includes a receiving optical assembly 432. This assembly includes a measurement input port 432A and a measurement output port 432B. A photosensitive element 431 is located at the measurement output port 432B. After the first and second reflected laser beams enter the receiving optical assembly 432 from the measurement input port 432A, they propagate along the same measurement optical path P1 to the measurement output port 432B, where they enter the photosensitive element 431.

[0066] The measuring device 001, especially one used for golf, generally also has an observation function. That is, the measuring device 001 integrates observation and measurement functions. For example, it can integrate telescopic and measurement functions. Therefore, in some embodiments, the measuring assembly also includes a telescope assembly 500. As shown in Figure 1, the telescope assembly 500 can be installed inside the housing 200. The telescope assembly 500 can be used to observe distant objects. Especially when the measuring device 001 is used in a golf rangefinder scenario, due to the large golf course, the telescope assembly 500 can be used to magnify distant objects to enable observation, magnification, and resolution of the objects. As shown in Figure 2, the telescope assembly 500 can include an objective lens assembly (objective lens portion) 510 and an eyepiece assembly (eyepiece portion) 520. The objective lens assembly 510 can be installed at the first end 210. The objective lens assembly 510 consists of a series of lenses and is located at the end closest to the object to magnify the object. The eyepiece assembly 520 consists of a series of lenses and is located at the end closest to the human eye. The eyepiece assembly 520 is mounted on the second end 220 and is movably connected to the second end 220 along the optical axis direction of the eyepiece assembly 520 .

[0067] For the convenience of description, the receiving optical assembly including the objective lens group 510 and the eyepiece lens group 520 is taken as an example for introduction.

[0068] Therefore, the receiving optical assembly 432 also includes an observation input port 432C and an observation output port 432D. Ambient light enters the receiving optical assembly 432 through the observation input port 432C, propagates along the observation optical path P2, and exits through the observation output port 432D. The observation optical path and the measurement optical path are two different optical paths. The observation optical path P1 terminates at the user's eye; the measurement optical path P2 terminates at the photosensitive element 431.

[0069] The structure among Fig. 2 is designed so that ambient light and reflected laser beam all are incident from the same incident end (objective lens group 510), to reduce the number of parts.So the observation incident end 432C and the measurement incident end 432A position are identical.But according to different designs, the position of observation incident end 432C and the measurement incident end 432A can also be different, and this specification does not limit it.For the convenience of description, this specification is described with the structure among Fig. 2 as an example.But those skilled in the art will know that the invention among this specification can also be applied to the structure of the different position of observation incident end 432C and measurement incident end 432A without violating the spirit of the present invention.

[0070] In order to compress the volume of the measuring device 001 and reduce the internal space occupied by components, the optical paths inside the measuring device 001 often share some receiving optical components, so two different optical paths may partially overlap.

[0071] For example, as shown in FIG2 , the measuring optical path of the measuring assembly 400 and the observing optical path P1 of the telescope assembly 500 share part of the receiving optical assembly 432 , and the two different optical paths partially overlap.

[0072] The receiving optical assembly 432 may further include an objective lens group 510 , an eyepiece group 520 and a spectroscopic module 4322 .

[0073] The objective lens assembly 510 serves as both the measurement input port 432A and the observation input port 432C. The spectroscopic module 4322 is located between the objective lens assembly 510 and the eyepiece assembly 520. The spectroscopic module 4322 includes a first input port 4322a, a first output port 4322b, and a second output port 4322d. The eyepiece assembly 520 faces the first output port 4322b. In some embodiments, the spectroscopic module 4322 also includes a second input port 4322c (not shown in FIG. 2 ).

[0074] The objective lens assembly 510 is located at the measurement input port 432A. The photosensitive element 431 is located at the measurement output port 432B. The reflected laser beam reflected by the target passes through the objective lens assembly 510 and enters the measurement device 001. It then enters the spectroscopic module 4322 at the first input port 4322a, propagates along the measurement optical path P1, and exits the spectroscopic module 4322 at the second output port 4322d, ultimately entering the photosensitive element 431. Both the first and second reflected laser beams enter the photosensitive element 431 along the same measurement optical path P1.

[0075] The objective lens assembly 510 is also located at the observation input end 432C, and the eyepiece assembly 520 is located at the observation output end. Ambient light enters the measuring device 001 through the objective lens assembly 510, similarly enters the spectroscopic module 4322 at the first input end 4322a, propagates along the observation optical path P2, and exits the spectroscopic module 4322 at the first output end 4322a before entering the eyepiece assembly 520. Objects are magnified to a preset magnification by the objective lens assembly 510, the spectroscopic module 4322, and the eyepiece assembly 520, and then "sent" into the user's eyes, enabling the user to clearly see distant objects. The objective lens assembly 510 and the eyepiece assembly 520 can be arranged in a straight line, forming a straight-tube telescope, as shown in Figure 2. In some embodiments, the objective lens assembly 510 and the eyepiece assembly 520 can also be arranged in a different straight line. The positions of the objective lens assembly 510 and the eyepiece assembly 520 can be selected based on the internal layout of the measuring device 001 and are not limited in this specification. This specification also does not limit the number, type (convex lens, concave lens) and parameters (lens curvature radius, center deviation, etc.) of the lenses in the objective lens group 510 and the eyepiece group 520.

[0076] Figure 4 shows an internal optical path diagram of a spectrometer module 4322 of a measurement device 001 according to some embodiments of the present disclosure. The measurement optical path P1 is indicated by a solid line, and the observation optical path P2 is indicated by a dashed line. The spectrometer module 4322 may include a first prism 4322A, a second prism 4322B, and a third prism 4322C.

[0077] The first prism 4322A may include the aforementioned first incident end 4322a and the beam splitting surface 4322e. The first incident end 4322a is used to receive ambient light. When the measuring device 001 is used for distance measurement, the first incident end 4322a may also be used to receive a reflected laser beam. The first prism 4322A may be a half pentaprism.

[0078] The second prism 4322B is located between the first prism 4322A and the eyepiece assembly 520. The second prism 4322B includes the aforementioned first output end 4322a. The second prism 4322B receives ambient light emitted from the first prism 4322A and guides the ambient light along the observation optical path P2, exiting the beam splitting module 4322 from the first output end 4322b, and entering the eyepiece assembly 520. The second prism 4322B may be a roof prism.

[0079] The third prism 4322C is located between the first prism 4322A and the photosensitive element 431. The third prism 4322C includes the aforementioned second output end 4322d. The third prism 4322C receives the reflected laser beam emitted from the first prism 4322A and guides the reflected laser beam along the measurement optical path P11, exiting the beam splitter module 4322 from the second output end 4322d, and ultimately entering the photosensitive element 431. The third prism 4322C may be a compensation prism.

[0080] The first prism 4322A can be bonded to the third prism 4322C to minimize light energy loss. Furthermore, the bonding surface S between the first prism 4322A and the third prism 4322C can be coated with a spectroscopic coating. This coating reflects visible light and transmits infrared light, thereby bifurcating the originally overlapping observation and measurement optical paths, causing the ambient and reflected laser beams to propagate in different directions.

[0081] For example, as shown in Figure 4, ambient light enters the first prism 4322A from the objective lens assembly 510, is then reflected from a surface of the first prism 4322A and is incident on the bonding surface S. There, it is reflected again and enters the second prism 4322B. After reflecting three times within the second prism 4322B, it is emitted along the optical axis of the eyepiece assembly 520 and ultimately enters the user's eye. A reflected laser beam similarly enters the first prism 4322A from the objective lens assembly 510, is then reflected from a surface of the first prism 4322A and is incident on the bonding surface S. It is transmitted through the bonding surface S and is incident on the third prism 4322C. It is then emitted from the third prism 4322C to the photosensitive element 431. In some embodiments, the receiving module 430 further includes a first reflector assembly 433. After the reflected laser beam emitted from the third prism 4322C enters the first reflector assembly 433, its propagation direction changes, ultimately entering the photosensitive element 431. By providing the first reflector assembly 433, the propagation direction of the reflected laser beam can be changed, thereby allowing the position of the photosensitive element 431 to be adjusted according to layout requirements, providing greater flexibility. The number of reflectors included in the first reflector assembly 433 can be set according to the optical path requirements and the design of the product's internal space, and this specification does not limit this. For example, Figure 4 shows a single reflector. The propagation direction of the reflected laser beam is only changed once by the first reflector assembly 433.

[0082] The surface of the prism in the spectrometer module 4322 may also be coated with other thin films. For example, the first incident end 4322a may be coated with an anti-reflection film for visible light (ambient light), 905nm wavelength and 850nm wavelength. For another example, the first output end 4322a may be coated with a visible light anti-reflection film. By coating with an anti-reflection film, the reflected light from optical surfaces such as lenses, prisms, and plane mirrors can be reduced or eliminated, thereby increasing the light transmittance of these components and reducing or eliminating the stray light of the system. Among them, the anti-reflection film and the spectrometer film can be formed on the prism surface by a thin film preparation process, or by pasting a thin film formed by a thin film preparation process on the prism surface, and this specification does not limit this.

[0083] As previously mentioned, in order to compress the volume of the measuring device 001 and reduce the internal space occupied by components, the optical paths within the measuring device 001 often share some receiving optical components, so two different optical paths will partially overlap. Figure 4 shows that the receiving optical paths in the observation optical path and the measurement optical path share some receiving optical components. In addition, the transmitting optical paths in the observation optical path and the measurement optical path can also share some receiving optical components. Figure 5 shows another measurement optical path and observation optical path diagram provided according to some embodiments of this specification. The measurement optical path P1 is shown by a solid line, and the observation optical path P2 is shown by a dotted line.

[0084] As shown in FIG5 , the first laser beam emitted by the first emitter 411 passes through the first lens group 412 and is first incident on the light splitting module 4322. After exiting the light splitting module 4322, it is incident on the objective lens group 510 and then incident on the target object. The second laser beam emitted by the second emitter 421 passes through the second lens group 422 and is incident on the target object. At this time, the reflected laser beam reflected back by the target object no longer passes through the light splitting module 4322, but can be directly incident on the photosensitive element 431 or can pass through the first reflector group 433 (not shown in FIG5 ) or the lens group before being incident on the photosensitive element 431.

[0085] It should be understood that since the structure in FIG. 5 is derived from FIG. 2-4 , all technical solutions in the above-mentioned FIG. 2-4 are applicable to the structure in FIG. 5 .

[0086] In some embodiments, the measurement light path and the observation light path may pass through different optical components, and the two light paths may not overlap at all. This specification does not limit the specific structures of the measurement light path and the observation light path.

[0087] After measuring device 001 determines the target distance, it needs to display the numerical value of the distance. For golf, measuring device 001 also needs to display information such as slope and wind speed. To this end, measuring device 001 may include a display module. For example, FIG6 shows a schematic diagram of the structure of a measuring device 001 with dual display modules, provided according to some embodiments of this specification. The basic architecture of this structure is based on the structure of measuring device 001 in FIG2-4 , to which a display module is added. Therefore, all technical solutions described in FIG2-4 above are applicable to the structure of FIG6 .

[0088] The measuring device 001 may include a first display module 810. The first display module 810 may be located between the eyepiece assembly 520 and the spectroscopic module 4322. The first display module 810 may be a transparent organic light emitting diode (OLED) or a transparent liquid crystal display (LCD). The first display module 810 is described as an LCD. When operating, the first display module 810 may output a first display signal toward the eyepiece assembly 520. The first display signal may include the aforementioned distance value, slope information, and the like. Therefore, the user can simultaneously see the target object, the background, and the information on the display screen through the eyepiece assembly 520.

[0089] During the day or when the ambient light is sufficient, natural light enters the measuring device 001 through the objective lens assembly 510 and shines on the back of the LCD display element, acting as background light for the first display module 810. However, at night or when the ambient light is dim, the LCD display is black and white and lacks background light. Therefore, the data displayed on the LCD is difficult to see clearly at night. If a background light source is added behind the LCD display element, the background light will block the light, affecting the user's observation of the target object. Therefore, in some embodiments, the measuring device 001 also includes a second display module 820.

[0090] The second display module 820 may be an OLED display element. Specifically, the second display module 820 may be a red OLED display element that can display clearly at night. The second display module 820 is configured to output a second display signal when in operation.

[0091] As previously described, the beam splitter module 4322 may further include a second incident end 4322c. Specifically, when the second display module 820 is located below the beam splitter module 4322, the third prism 4322C may include a second incident end 4322c. The second display signal enters the beam splitter module 4322 from the second incident end 4322c, exits the beam splitter module 4322 from the first output end 4322b, and is output toward the eyepiece assembly 520.

[0092] The propagation path of the second display signal is described using the spectrometer module 4322 in Figure 6 as an example. Light (the second display signal) emitted by the second display module 820 passes through the third prism 4322C, then transmits from the bonding surface S into the first prism 4322A. It then enters the second prism 4322B and undergoes three reflections within the second prism 4322B before exiting the spectrometer module 4322 and being output toward the eyepiece. As previously mentioned, the bonding surface S can be coated with a spectrometer film. The spectrometer film can reflect visible light and transmit infrared light. When a second display module 820 is provided, the spectrometer film must also be able to transmit light from the OLED display.

[0093] In some embodiments, the measurement device 001 further includes a second reflector assembly 821 and a third lens assembly 822 for use with the second display module 820. As shown in FIG6 , the second display signal is incident on the second reflector assembly 821 and reflected to the third lens assembly 822 before being incident on the spectrometer module 4322.

[0094] The first display signal and the second display signal can be displayed at the same position in front of the eyepiece assembly 520. By providing two display modules, the first display module 810 displays information during the day, and the second display module 820 displays information at night. This allows the measuring device 001 to clearly display data both during the day and at night, making it easier for the user to read the data.

[0095] FIG7 shows a flow chart of a laser ranging method S700 provided according to some embodiments of this specification. The ranging method S700 can be applied to the above-mentioned measuring device 001. The method S700 can be executed by a controller in the measuring device 001. The method S700 may include:

[0096] S710: Start the second transmitting module to transmit the second transmitting laser beam and the receiving module to receive the second reflected laser beam reflected by the target object;

[0097] The second emitted laser beam may be a pulsed laser. The second emitted laser beam may be used for long-distance measurement.

[0098] S730: Obtain a second distance based on the second reflected laser beam.

[0099] Receiving module 430 can obtain the second distance using a time-of-flight ranging method based on the second reflected laser. The time-of-flight ranging method can cover a wider range, but the accuracy of the obtained second distance data is relatively low. As mentioned above, the measurement accuracy is ±45cm.

[0100] S750: Determine whether to enable multi-mode operation based on the second reflected laser beam and the second distance.

[0101] In the multi-mode, the measurement device 001 (controller) activates the first transmitting module 410 to emit a first transmitted laser beam and the receiving module 430 to receive the first reflected laser beam reflected back from the target. The first transmitted laser beam can be a continuous laser. The first transmitted laser beam can be used for close-range measurement. If the second distance is less than a distance threshold, it indicates that the distance between the target and the user is relatively close, allowing close-range measurement to obtain more accurate data. For example, the distance threshold can be 50 meters.

[0102] Specifically, the controller determines that the quality of the reflection surface of the second reflected laser beam meets a preset condition and the second distance is less than a distance threshold, and starts the multi-mode operation.

[0103] When the second distance is less than 50m, it means that the target is in a close range, that is, within the range that the first reflected laser beam can measure the distance. Therefore, in order to obtain high-precision data, the controller will start the first transmitting module 410. The second reflected laser beam received by the receiving module 430 may also contain information about the target or the surface area (reflecting surface) of the target. Since the target has its own material surface reflection characteristics, the reflectivity, reflection azimuth, roughness, color and other variables of its material (collectively referred to as the quality of the reflecting surface) will affect the optical power that can be received by the laser receiving module 430 to a certain extent, thereby affecting the ranging accuracy of the measuring range. Among them, the preset condition can be that the quality of the reflecting surface of the target makes the ratio of the power of the laser received by the receiving module 430 to the output power of the laser exceed the preset value. For example, the power of the second reflected laser beam / the power of the second transmitted laser beam>the preset value.

[0104] If the quality of the reflecting surface does not meet the preset conditions, that is, the surface reflection characteristics of the target object make the optical power of the laser received by the receiving module 430 low, and the data reliability and data accuracy obtained after using the first transmitted laser beam are low, the controller will not turn on the first transmitting module 410.

[0105] When the controller determines that the quality of the reflection surface of the second reflected laser beam does not meet the preset condition, or the second distance is greater than the distance threshold, the second distance can be directly output as the target distance.

[0106] After measuring device 001 (controller) activates multi-mode operation, the controller can determine a first distance based on the first reflected laser beam. The controller can then determine and output a target distance based on the first and second distances. If the first distance is invalid, the target distance is the second distance. If the first distance is valid, the target distance is the first distance.

[0107] Specifically, if the first distance is valid, the controller will output the first distance as the target distance because the accuracy of the first distance is high. Whether the first distance is valid can be determined by the controller. For example, when the absolute value of the difference between the first distance and the second distance is greater than the first preset value and less than the second preset value, the first distance can be considered valid. The reason why the absolute value of the difference between the first distance and the second distance is required to be greater than the first preset value is because the measurement accuracy of the first distance and the second distance is different, so the values ​​are generally not the same. The difference between the first distance and the second distance needs to correspond to the difference between the measurement accuracy. The reason why the absolute value of the difference between the first distance and the second distance is required to be less than the second preset value is to ensure the reliability of the first distance value. If the difference between the two is large, it is possible that the measuring device 001 made an error in the process of measuring the distance using the first emitted laser beam, and therefore the first distance needs to be discarded. At this time, the target distance is the second distance.

[0108] FIG8 shows a flow chart of another laser ranging method S800 provided according to some embodiments of this specification. The ranging method S800 can be applied to the above-mentioned measuring device 001. The method S800 can be executed by a controller in the measuring device 001. The method S800 may include:

[0109] S810: Obtain the selection mode input by the user.

[0110] The selection mode input by the user is a first mode or a second mode. In the first mode, the first emission module emits a first emission laser beam, and in the second mode, the second emission module emits a second emission laser beam.

[0111] The first mode may be a proximity mode. In the first mode, the first transmitting module transmits a first transmitting laser beam. The first transmitting laser beam may be a continuous laser. The receiving module 430 obtains a first distance based on the first reflected laser beam using a phase ranging method or a high-speed pulse phase ranging method.

[0112] The second mode may be a distance measurement mode. In the second mode, the second transmitting module transmits a second transmitting laser beam. The second transmitting laser beam may be a pulsed laser. The receiving module 430 obtains the second distance using a time-of-flight ranging method based on the second reflected laser beam.

[0113] The measuring device 001 may be provided with two buttons for the user to select a mode. The controller may obtain the user's selected mode by the button selected by the user. The measuring device 001 may also be provided with an input interface for the user to input the selected mode. This specification does not limit the method by which the measuring device 001 (controller) obtains the selected mode input by the user.

[0114] The user can first visually estimate the approximate distance between themselves (measuring device 001) and the target. For example, if the user visually estimates the distance between themselves and the target to be greater than 100 meters, then the near measurement mode will likely not be able to obtain valid data, and the user does not require such high measurement accuracy. In this case, the user can directly manually select the second mode, that is, the far measurement mode.

[0115] S830: Measuring a target distance between the laser measuring device and the target object based on the selected mode.

[0116] S850: Output target distance.

[0117] In summary, the measuring device 001 can meet the user's measurement needs for different distances and obtain distance measurement values ​​with high accuracy.

[0118] In some embodiments, the measuring device 001 further includes a diopter adjustment assembly. As previously described, the eyepiece assembly 520 can be mounted on the second end 220 and movably connected to the second end 220 along the optical axis of the eyepiece assembly 520. Specifically, the eyepiece assembly 520 can be moved relative to the housing 200 along the optical axis of the eyepiece assembly 520 to adjust the focal position of the eyepiece assembly 520, thereby adjusting the diopter of the eyepiece assembly 520 to suit human vision, thereby enabling people with different vision to obtain clear visual images.

[0119] The diopter adjustment range of the eyepiece assembly 520 varies depending on the specific usage scenario. For example, when monitoring the position change of a workpiece in the manufacturing industry, the diopter adjustment range of the eyepiece assembly 520 can be between -20D and +20D. For example, when measuring the distance between an athlete and a target on a golf course, the diopter adjustment range of the eyepiece assembly 520 can be between -10D and +10D. For another example, when measuring the size of a room in interior design and decoration, the diopter adjustment range of the eyepiece assembly 520 can be between -5D and +5D, and so on. In actual application, the diopter adjustment range of the eyepiece assembly 520 can be set according to the specific usage scenario and is not limited here.

[0120] Figure 9 illustrates a schematic structural diagram of a measuring device 001 according to some embodiments of this specification. As shown in Figure 9 , a diopter adjustment assembly 700 can be mounted on the second end 220. The diopter adjustment assembly 700 can be flexibly connected to the eyepiece assembly 520 to adjust the position of the eyepiece assembly 520 relative to the housing 200 along the optical axis. The specific structure of this flexibly connected assembly will be described in detail later.

[0121] Figure 10 shows an exploded schematic diagram of a measuring device 001 provided according to some embodiments of this specification. As shown in Figure 10 , the housing 200 may include an inner housing 270 and an outer housing 250. Both the inner housing 270 and the outer housing 250 are wall-shaped components. The inner housing 270 may serve as a mounting base for the measuring assembly 400 and the telescope assembly 500. The laser measurement assembly 400 and the telescope assembly 500 may be mounted within the accommodating cavity formed by the inner housing 270. The outer housing 250 may be fixedly connected to the inner housing 270 and cover the exterior of the inner housing 270. The inner housing 270 and the outer housing 250 are fixedly connected. Various methods exist for achieving this fixed connection, such as integral molding, threaded connections, welding, riveting, bonding, snap-fit ​​connections, mortise and tenon connections, and are not limited in this specification. As previously described, the housing 200 may include a first end 210 and a second end 220. The first end 210 may be an end of either the outer housing 250 or the inner housing 270. The second end 220 may be an end of the outer shell 250 or an end of the inner shell 270 .

[0122] The eyepiece group 520 can be movably connected to the second end 220 of the inner shell 270 along the optical axis direction of the eyepiece group 270, thereby realizing the movably connected eyepiece group 520 relative to the shell 200 along the optical axis direction of the eyepiece group 520.

[0123] The housing 200 also includes an end cap 290. The end cap 290 is disposed at the second end 220 and covers the diopter adjustment assembly 700. Specifically, the end cap 290 may cover the side of the diopter adjustment assembly 700 facing the exterior of the housing 200 (i.e., facing the human eye). The end cap 290 may also cover the side of the eyepiece assembly 520 facing the exterior of the housing 200 (i.e., facing the human eye). The end cap 290 may be mounted on either the outer housing 250 or the inner housing 270. As shown in FIG10 , the description will take the fixed connection between the end cap 290 and the outer housing 250 as an example. Methods for fixing the end cap 290 to the outer housing 250 include, but are not limited to, integral molding, threaded connection, bonding, riveting, welding, bayonet connection, mortise and tenon connection, and the like. The end cap 290 shown in FIG10 is fixedly connected to the outer housing 250 using a snap-fit ​​connection. The end cap 290 may be provided with an observation hole 291. The user can view the eyepiece assembly 520 through the observation hole 291. The material of the end cap 290 can be any material, such as metal, plastic, silicone, etc. In order to improve comfort, the material of the end cap 290 can be a soft material, such as silicone, rubber, etc.

[0124] As shown in Figure 10, the diopter adjustment assembly 700 may include an adjustment knob 720. The adjustment knob 720 may be rotatably connected to the second end 220. For example, the adjustment knob 720 may be rotatably connected to the second end 220 of the inner housing 270, or it may be rotatably connected to the second end 220 of the outer housing 250. For ease of illustration, the following description will use the example of the adjustment knob 720 being rotatably connected to the second end 220 of the inner housing 270. The adjustment knob 720 may also be spirally connected to the eyepiece assembly 520 along the optical axis of the eyepiece assembly 520. Since the eyepiece assembly 520 and the adjustment knob 720 are spirally connected along the optical axis of the eyepiece assembly 520, the adjustment knob 720 can drive the eyepiece assembly 520 to spirally move relative to the adjustment knob 720. In this case, the spiral movement of the eyepiece assembly 520 relative to the adjustment knob 720 can be divided into rotation relative to the circumferential direction of the adjustment knob 720 and movement relative to the axial direction (i.e., the optical axis) of the adjustment knob 720. At the same time, because the eyepiece assembly 520 is connected to the housing 200 along the optical axis, the eyepiece assembly 520 cannot rotate relative to the housing 200. Therefore, when the adjustment knob 720 is turned, the adjustment knob 720 can drive the eyepiece assembly 520 to move along the optical axis. Therefore, the user does not need to directly adjust the eyepiece assembly 520 to adjust the diopter, and the eyepiece assembly 520 does not need to be exposed outside the housing 200. During observation, observation is made through the eyepiece assembly 520, and the adjustment knob 720 is provided separately from the eyepiece assembly 520, so accidental operation of the adjustment knob 720 is prevented, thereby providing a better user experience.

[0125] The diopter adjustment assembly 700 may further include an axial stopper 740 , which may be used to axially position the adjustment knob 720 and prevent the adjustment knob 720 from moving in the axial direction relative to the second end 220 of the inner housing 270 .

[0126] Figure 11 shows a schematic diagram of the structure of the second end 220 of an inner housing 270 and an eyepiece assembly 520 provided according to some embodiments of the present disclosure. As shown in Figure 11, the second end 220 of the inner housing 270 may include a connecting shaft 271. The connecting shaft 271 can be used to be mounted with the adjustment knob 720. A positioning platform 275 may be provided at one end of the connecting shaft 271. The positioning platform 275 can prevent the adjustment knob 720 from moving along the optical axis of the eyepiece assembly 520 during rotation. The positioning platform 275 can be provided at one end of the connecting shaft 271 near the inner side of the housing 200. The positioning platform 275 protrudes in the radial direction of the connecting shaft 271 relative to the connecting shaft 271. When the adjusting knob 720 is mounted on the connecting shaft 271, the positioning platform 275 can abut against one side of the adjusting knob 720 (e.g., the side of the adjusting knob 720 facing the interior of the housing 200), and the axial stopper 740 can abut against the other side of the adjusting knob 720 (e.g., the side of the adjusting knob 720 facing the exterior of the housing 200), thereby securing the adjusting knob 720 axially relative to the connecting shaft 271. The axial stopper 740 can be fixedly connected to the connecting shaft 271 by threads, or can be engaged by a slot, etc.

[0127] An eyepiece aperture 273 may be provided on the second end 220 of the inner housing 270. Specifically, the eyepiece aperture 273 may be provided on the connecting shaft 271. The eyepiece aperture 273 may be used to mount the eyepiece assembly 520. The eyepiece aperture 273 and the eyepiece assembly 520 may be compatible. This compatibility may include matching the size and shape of the eyepiece aperture 273 and the eyepiece assembly 520. For example, the eyepiece aperture 273 and the eyepiece assembly 520 may both be cylindrical.

[0128] In some embodiments, the connecting shaft 271 may be provided with a movable groove 277. The movable groove 277 may be disposed on the eyepiece aperture 273. The movable groove 277 extends through the sidewall of the connecting shaft 271 in the radial direction of the connecting shaft 271. The movable groove 277 also extends along the optical axis of the eyepiece assembly 520. The movable groove 277 can be used to movably connect with the eyepiece assembly 520 along the optical axis of the eyepiece assembly 520. The number of movable grooves 277 can be one or more, such as two, three, four, five, etc. The multiple movable grooves 277 can be evenly or unevenly distributed along the circumferential direction of the connecting shaft 271. Each movable groove 277 includes a first limiting portion 277-1 and a second limiting portion 277-3. The first limiting portion 277-1 and the second limiting portion 277-3 are respectively the ends of the movable groove 277 in the extension direction. The eyepiece assembly 520 can move relative to the inner housing 270 between the first limiting portion 277 - 1 and the second limiting portion 277 - 3 .

[0129] The eyepiece assembly 520 is provided with a guide post 521. The guide post 521 protrudes in the radial direction of the eyepiece assembly 520. When the eyepiece assembly 520 is mounted on the inner housing 270, the guide post 521 can be connected to the movable slot 277. The guide post 521 can pass through the movable slot 277 and slide therewith, thereby enabling the eyepiece assembly 520 to be movable and connected relative to the inner housing 270 along the optical axis of the eyepiece assembly 520. When the guide post 521 moves along the optical axis of the eyepiece assembly 520, it moves between the first stop 277-1 and the second stop 277-3. The height of the guide post 521 can be greater than the thickness of the sidewall of the connecting shaft 271. When the eyepiece assembly 520 is mounted on the inner housing 270, the guide post 521 passes through the movable slot 277 and protrudes in the radial direction relative to the connecting shaft 271. It should be noted that the guide post 521 can be detachably connected to the eyepiece assembly 520. The number of the guide posts 521 can be one or more, such as 2, 3, 4, 5, etc. It should be noted that the number of the guide posts 521 is the same as the number of the moving slots 277 .

[0130] FIG12 shows a schematic diagram of the structure of an adjustment knob 720 according to some embodiments of the present disclosure. In some embodiments, the adjustment knob 720 may include a rotating connection portion 722. In some embodiments, the adjustment knob 720 may also include a dial button 724.

[0131] As previously described, the rotational connection between the adjustment knob 720 and the second end 220 of the inner housing 270 and the screw connection between the adjustment knob 720 and the eyepiece assembly 520 can be achieved by a rotational connection portion 722. The rotational connection portion 722 can be rotationally connected to the connecting shaft 271 of the inner housing 270. The rotational connection portion 722 may include a connecting hole 722-1. The connecting shaft 271 is rotationally connected to the connecting hole 722-1. The positioning platform 275 and the axial positioning member 740 respectively abut against two sides of the rotational connection portion 722 to axially fix the rotational connection portion 722 relative to the connecting shaft 271.

[0132] The rotating connection portion 722 is provided with a guide groove 722-3. The guide groove 722-3 extends in a spiral direction around the rotating connection portion 722. The spiral extension can be extending along the surface of the rotating connection portion 722 in the circumferential direction while being offset in the axial direction. The spiral extension can be a linear extension along the spiral direction or a nonlinear extension along the spiral direction. The guide groove 722-3 can penetrate the sidewall of the rotating connection portion 722 in the radial direction of the rotating connection portion 722. The guide groove 722-3 can be used to spirally connect with the eyepiece assembly 520 along the optical axis of the eyepiece assembly 520. Specifically, the eyepiece assembly 520 can be slidably connected to the rotating connection portion 722 along the guide groove 722-3. The guide post 521 of the eyepiece assembly 520 can pass through the guide groove 722-3 to achieve a slidable connection between the eyepiece assembly 520 and the adjustment knob 720 along the guide groove 722-3. The guide groove 722-3 includes a third limiting portion 722-31 and a fourth limiting portion 722-33. The third limiting portion 722-31 and the fourth limiting portion 722-33 are the ends of the guide groove 722-3 in the extension direction. When the eyepiece assembly 520 moves relative to the housing 200 along the optical axis of the eyepiece assembly 520, the guide post 521 can move between the third limiting portion 722-31 and the fourth limiting portion 722-33. When the guide post 521 abuts the first limiting portion 277-1 or the second limiting portion 277-3, the guide post 521 is located between the third limiting portion 722-31 and the fourth limiting portion 722-33. The number of guide grooves 722-3 can be one or more, such as two, three, four, five, etc. It should be noted that the number of guide grooves 722-3 is the same as the number of guide posts 521.

[0133] Because the guide groove 722-3 extends in a spiral direction around the circumference of the rotating connection portion 722, the rotating connection portion 722 can drive the eyepiece assembly 520 to move spirally relative to the rotating connection portion 722. In this case, the spiral movement of the eyepiece assembly 520 relative to the rotating connection portion 722 can be divided into rotation relative to the circumferential direction of the rotating connection portion 722 and movement relative to the axial direction (i.e., the optical axis) of the rotating connection portion 722. At the same time, because the eyepiece assembly 520 is connected to the movable groove 277 for movement along the optical axis, the eyepiece assembly 520 cannot rotate relative to the housing 200. Therefore, when the rotating connection portion 722 is rotated, the rotating connection portion 722 can drive the eyepiece assembly 520 to move along the optical axis. Therefore, the user does not need to directly adjust the eyepiece assembly 520 to achieve diopter adjustment, and the eyepiece assembly 520 does not need to be exposed to the outside of the housing 200. During the observation process, observation is made through the eyepiece group 520, and the adjustment knob 720 is independently provided from the eyepiece group 520, so the adjustment knob 720 will not be operated accidentally, thereby providing a better experience for the user.

[0134] To further prevent the user from accidentally touching the adjustment knob 720, the rotating connection portion 722 may be covered by the housing 200. The rotating connection portion 722 may be located between the inner housing 270 and the outer housing 250. The end cap 290 may cover the side of the rotating connection portion 722 facing the exterior of the housing 200. In this case, the adjustment knob 720 may further include a dial button 724. The dial button 724 may be disposed on the rotating connection portion 722. The dial button 724 may pass through the housing 200 and be exposed to the exterior of the housing 200. The user can rotate the rotating connection portion 722 by turning the dial button 724. The dial button 724 may be fixedly connected to the rotating connection portion 722. Methods of fixed connection include, but are not limited to, integral molding, threaded connection, bonding, riveting, welding, bayonet connection, mortise and tenon connection, and the like. In some embodiments, the dial button 724 may be disposed radially of the rotating connection portion 722. When the measuring device 001 is in operation, the dial button 724 may be located below the rotating connection portion 722. It should be noted that the working state of the measuring device 001 may be the posture of the measuring device 001 when in use. In some embodiments, the dial button 724 may also be provided in the axial direction of the rotating connection portion 722 .

[0135] Figure 13 shows a schematic diagram of the structure of the connection between the inner housing 270, the eyepiece assembly 520, and the adjustment knob 720 according to some embodiments of this specification. As shown in Figure 13, the guide post 521 of the eyepiece assembly 520 can pass through the movable slot 277 and the guide slot 722-3, thereby achieving a movable connection between the eyepiece assembly 520 and the inner housing 270 along the optical axis, and a sliding connection between the eyepiece assembly 520 and the adjustment knob 720 along the guide slot 722-3.

[0136] When the dial button 724 is turned, the adjustment knob 720 rotates relative to the inner housing 270 about the optical axis of the eyepiece assembly 520, thereby driving the guide post 521 to move between the third stopper 722-31 and the fourth stopper 722-33. Furthermore, because the guide post 521 passes through the movement slot 277, it simultaneously moves between the third stopper 722-31 and the fourth stopper 722-33 and along the optical axis between the first stopper 277-1 and the second stopper 277-3. Furthermore, because the guide post 521 is mounted on the eyepiece assembly 520, when the guide post 521 moves along the optical axis, the eyepiece assembly 520 also moves along the optical axis, thereby achieving diopter adjustment.

[0137] Figure 14 shows a front view of a measuring device 001 according to some embodiments of this specification; Figure 15 shows a cross-sectional view of Figure 14 along section BB. As shown in Figures 14 and 15, a recessed portion 252 is provided on the outer surface of the second end 220 of the outer shell 250. The recessed portion 252 is oriented in the direction of the optical axis of the eyepiece assembly 520. When the measuring device 001 is in operation, the recessed portion 252 is located below the adjustment knob 720. The operating state is as described above and will not be further elaborated here.

[0138] The outer shell 250 is provided with a notch 254 between the recessed portion 252 and the adjusting knob 720. The dial button 724 can pass through the notch 254 and be located in the recessed portion 252. At this time, the design of the recessed portion 252 can further improve the possibility of the dial button 724 not being accidentally touched.

[0139] In some embodiments, in order to allow the measuring device 001 to be adsorbed on the surface of an object, thereby simply and conveniently placing and fixing the measuring device 001 , the measuring device 001 may further include a first magnetic component 300A.

[0140] Figure 16A shows a schematic diagram of a measuring device 001 with a first magnetic assembly 300A installed according to some embodiments of this specification. Figure 16B shows a schematic diagram of a measuring device 001 with an auxiliary housing 200B installed on its bottom 230 according to some embodiments of this specification.

[0141] The first magnetic assembly 300A can be located on the bottom 230 of the housing 200. For example, the first magnetic assembly 300A can be located on the bottom 230 of the outer shell 250 (not shown). The first magnetic assembly 300A enables the measuring device 001 to be attached to a ferromagnetic surface through the bottom 230. Here, a ferromagnetic object refers to something that contains iron, nickel, or other substances that are attracted by magnetism. For example, because golf courses are large, users often use a golf cart to travel to their next round. The surface can be the body of the golf cart, such as a steel surface like the top support railing or the sidewall of the golf cart. For another example, some users' golf bags have ferromagnetic areas on their surfaces, such as the steel inner support. In this case, the surface can be the ferromagnetic area on the golf bag. By placing the first magnetic assembly 300A on the bottom 230 of the housing 200, the user can attach the measuring device 001 to a surface when not in use, reducing the user's burden and ensuring the stability of the measuring device 001's placement. Moreover, compared with other methods such as using card slots, buckles, glue, etc., using magnetic attraction to fix the measuring device 001 is simple and quick to operate, has a simple structure, is reusable and has a low cost.

[0142] In some embodiments, the first magnetic assembly 300A may include a single magnetic element. In other embodiments, the first magnetic assembly 300A may include multiple magnetic elements. For example, the first magnetic assembly 300A includes four magnetic elements. This specification does not limit the number of magnetic elements.

[0143] In some embodiments, the first magnetic component 300A can be a permanent magnet, such as one or more permanent magnets, or a material made of permanent magnetic powder. Permanent magnets can permanently maintain their magnetic strength. When the first magnetic component 300A is a permanent magnet, it can be operated without a power source, thereby reducing energy consumption. Furthermore, permanent magnets are smaller in size, occupying less space, and are more suitable for a lightweight, portable measuring device 001. In other embodiments, the first magnetic component 300A can also be an electromagnet, such as an element composed of one or more electromagnets. This electromagnet can have a conventional power supply, a switch control component, and an electromagnetic coil structure. This specification does not impose specific limitations, and those skilled in the art can easily find relevant literature by consulting existing technical documents. An electromagnet can gain or lose its magnetism depending on the supply of electric current. When the first magnetic component 300A is an electromagnet, the measuring device 001 can be equipped with a corresponding switch control component to control the first magnetic component 300A. The switch control component can control not only the presence or absence of magnetism in the first magnetic component 300A, but also the strength of its magnetism, thereby adapting to a wider range of usage scenarios and conditions. In this way, when the user is using the measuring device 001, the power supply of the electromagnet can be turned off, rendering the measuring device 001 non-magnetic. After the user has finished using the measuring device 001, the power supply of the electromagnet can be turned on to generate magnetism, making it convenient for the user to place it anywhere. When the first magnetic component 300A is an electromagnet, its magnetic pull can be controlled. Furthermore, the magnetism of the electromagnet can be adjusted by current, achieving a greater magnetic pull than a permanent magnet, i.e., a stronger adsorption force, thereby enabling the measuring device 001 to adhere more firmly to the surface of an object.

[0144] In order to avoid interference between the first magnetic component 300A and other components in the housing 200, the first magnetic component 300A can be placed in a receiving cavity. In some embodiments, the bottom 230 of the housing 200 can be provided with a first receiving cavity 231. The first magnetic component 300A can be placed in the first receiving cavity 231. In order to better illustrate the first receiving cavity 231 and the first magnetic component 300A, the first magnetic component 300A is not located in the first receiving cavity 231 in FIG16A. In actual products, the first magnetic component 300A is located in the first receiving cavity 231.

[0145] The shape of the first accommodating cavity 231 can be compatible with the shape of the first magnetic assembly 300A, thereby avoiding space waste due to size mismatch and ensuring a more compact assembly of the two. For example, when the first magnetic assembly 300A is a circular magnet, the first accommodating cavity 231 can be a corresponding cylindrical space. Placing the first magnetic assembly 300A in the first accommodating cavity 231 can avoid corner collisions. For another example, as shown in Figure 16A, when the first magnetic assembly 300A is a rectangular magnet, the first accommodating cavity 231 can be a corresponding prismatic space. Once placed in the first accommodating cavity 231, the first magnetic assembly 300A is less likely to rotate. As shown in Figure 16A, when the first accommodating cavity 231 is a prismatic space, the extended space of the bottom 230 of the housing 200 can be fully utilized, resulting in a larger prismatic space, which can accommodate a larger volume of the rectangular magnet, allowing the measuring device 001 to adhere more firmly to the surface of the object. In some embodiments, the first magnetic assembly 300A can be flush with the opening of the first accommodating cavity 231. In some embodiments, the first magnetic component 300A may be lower than the opening of the first accommodating cavity 231 , thereby preventing other components from contacting the first magnetic component 300A and affecting its magnetism.

[0146] In some embodiments, the first accommodating cavity 231 may be a depression formed from the inner wall of the housing at the bottom 230 toward the outer wall. In other words, the first accommodating cavity 231 is located in and faces the interior of the housing 200. In other embodiments, the first accommodating cavity 231 may be a depression formed from the outer wall of the housing at the bottom 230 toward the inner wall, as shown in FIG16A . In other words, the first accommodating cavity 231 is located in and faces the exterior of the housing 200. In this case, the first magnetic assembly 300A can be placed into the first accommodating cavity 231 from the outside, facilitating installation and replacement of the first magnetic assembly 300A.

[0147] The first magnetic component 300A can be connected to the first accommodating cavity 231 through a connector to fix the first magnetic component 300A in the first accommodating cavity 231 so as to prevent it from falling. For example, the connector can be glue. The first magnetic component 300A can be bonded in the first accommodating cavity 231 by glue. For another example, the connector can be a card slot and buckle structure. One of a card slot and a buckle is provided on the first magnetic component 300A. The other of a card slot and a buckle is provided in the first accommodating cavity 231. The first magnetic component 300A and the first accommodating cavity 231 are connected by a buckle and slot structure, so that the first magnetic component 300A does not fall from the first accommodating cavity 231.

[0148] To ensure the aesthetics and design of the product, the measuring device 001 may further include a cover structure covering the first accommodating cavity 231. In some embodiments, as shown in FIG16B , the housing 200 may include a main housing 200A and a secondary housing 200B. For example, the outer housing 250 (not shown) may include a main housing 200A and a secondary housing 200B. The secondary housing 200B may be mounted on the main housing 200A and cover the recess. In other words, the secondary housing 200B may cover the first accommodating cavity 231 after being mounted on the main housing 200A.

[0149] The main shell 200A and the auxiliary shell 200B can be fixedly connected or detachably connected to form the appearance of the measuring device 001 as shown in Figure 16B. In some embodiments, the auxiliary shell 200B can be located outside the main shell 200A. For example, the outer surface of the shell of the main shell 200A is provided with a mounting groove. The shape of the auxiliary shell 200B matches the mounting groove. After the auxiliary shell 200B is installed on the main shell 200A through the mounting groove, the upper surface of the auxiliary shell 200B is flush with the upper surface of the main shell 200A, making the product easy for the user to hold while maintaining its appearance. The assembly method and assembly shape of the auxiliary shell 200B and the main shell 200A can be changed according to product requirements and user preferences, and this manual does not limit them here.

[0150] As shown in Figure 16B , by using auxiliary housing 200B to cover first accommodating cavity 231, it is possible to prevent first magnetic assembly 300A from falling out if the connector is not securely fixed to first magnetic assembly 300A. For example, if first magnetic assembly 300A is glued to first accommodating cavity 231 and the glue fails, auxiliary housing 200B covering first accommodating cavity 231 will prevent first magnetic assembly 300A from falling out of measuring device 001. In some embodiments, as shown in Figure 16B , auxiliary housing 200B can cover a portion of bottom 230 and side 240 of main housing 200A.

[0151] In some embodiments, the auxiliary housing 200B is mounted on the main housing 200A and at least partially covers the bottom. The auxiliary housing 200B is magnetic and represents the first magnetic component 300A. In other words, the auxiliary housing 200B functions as both a housing and a surface-attaching device. Using the auxiliary housing 200B as the first magnetic component 300A eliminates the need for a separate accommodating cavity in the bottom 230, simplifying the production process. Furthermore, when the auxiliary housing 200B serves as the first magnetic component 20, it can provide maximum coverage of the bottom 230, allowing the measuring device 001 to adhere more securely to the surface. When the main housing 200A and the auxiliary housing 200B are detachably connected, using the auxiliary housing 200B as the first magnetic component 300A externalizes the first magnetic component 300A, making it easier for the user to install and remove it based on their needs. When playing golf, the user installs the auxiliary housing 200B; when not playing golf, the user removes the auxiliary housing 200B.

[0152] Figure 17A shows a schematic diagram of a measuring device 001 with magnetic components installed on both the bottom 230 and the side 120 according to some embodiments of this specification. Figure 17B shows a schematic diagram of a measuring device 001 with auxiliary housing 200B installed on the bottom 230 and the side 120 according to some embodiments of this specification.

[0153] In addition to the above structure, the side portion 240 of the housing 200 may also be provided with a second magnetic component 300B, so that the measuring device 001 can also be attached to a ferromagnetic surface through the side portion 240. For example, the side portion of the main housing 200A may be provided with a second magnetic component 300B. By providing magnetic components on both the bottom 230 and the side portion 240, it is ensured that the user can attach the measuring device 001 to the surface of an object regardless of whether the device is placed upright or on its side. The side portion 240 may include a first side portion and a second side portion disposed opposite the first side portion. Therefore, the second magnetic component 300B may be provided on either the first side portion or the second side portion. The second magnetic component 300B may also be provided on both the first side portion and the second side portion.

[0154] In some embodiments, the second magnetic assembly 300B may include a single magnetic element. In other embodiments, the second magnetic assembly 300B may include multiple magnetic elements. For example, the second magnetic assembly 300B includes two magnetic elements. This specification does not limit the number of magnetic elements.

[0155] Similar to the first magnetic component 300A, the second magnetic component 300B may be a permanent magnet or an electromagnet, which will not be described in detail here.

[0156] In some embodiments, to prevent the second magnetic assembly 300B from interfering with other components within the housing 200, the side portion 240 may also include a second accommodating cavity 241, and the second magnetic assembly 300B is positioned within the second accommodating cavity 241. To better illustrate the second accommodating cavity 241 and the second magnetic assembly 300B, FIG17A shows the second magnetic assembly 300B not positioned within the second accommodating cavity 241. In an actual product, the second magnetic assembly 300B is positioned within the second accommodating cavity 241.

[0157] Similar to the first accommodating cavity 231 and the first magnetic assembly 300A, the shape of the second accommodating cavity 241 can be adapted to the shape of the second magnetic assembly 300B, thereby avoiding space waste due to size mismatch and ensuring a more compact assembly. The specific design can refer to the first accommodating cavity 231 and the first magnetic assembly 300A and will not be repeated here.

[0158] Similar to the first accommodating chamber 231, the second accommodating chamber 241 can be a depression formed by the inner wall of the shell at the side 240 toward the outer wall, that is, the second accommodating chamber 241 is located in and faces the interior of the shell 200. In other embodiments, the second accommodating chamber 241 can be a depression formed by the outer wall of the shell at the side 240 toward the inner wall, as shown in Figure 17A. That is, the second accommodating chamber 241 is located in and faces the outside of the shell 200. In this case, the second magnetic component 300B can be placed into the second accommodating chamber 241 from the outside, facilitating the installation and replacement of the second magnetic component 300B. In this case, the second magnetic component 300B can be connected to the second accommodating chamber 241 via a connector to fix the second magnetic component 300B in the second accommodating chamber 241 so that it does not fall. The connection method between the second magnetic component 300B and the second accommodating chamber 241 can refer to the connection method between the first magnetic component 300A and the first accommodating chamber 231, and will not be repeated here.

[0159] Since the side 240 of the measuring device 001 has a larger area, multiple magnetic elements can be provided on the side 240 so that the measuring device 001 can be more firmly adsorbed on the surface of the object. In some embodiments, the entire area of ​​the side 240 can be provided with a second magnetic component 300B. In other embodiments, the second magnetic component 300B is distributed along the diagonal of the side 240. As shown in Figure 17A, the second accommodating cavity 120 extends along the diagonal of the side 240. The rectangular magnetic member is placed in the second accommodating cavity 120. By extending the second accommodating cavity 241 along the diagonal of the side 240 and distributing the second magnetic component 300B along the diagonal, the entire side of the measuring device 001 can be adsorbed on the surface of the object, thereby ensuring that the measuring device 001 is not easy to fall from the surface of the object.

[0160] As shown in Figure 17B , when the side of the measuring device 001 includes the second magnetic assembly 300B, the auxiliary housing 200B can be designed to surround the main housing 200A. In this case, the auxiliary housing 200B covers not only the first accommodating cavity 231 but also the second accommodating cavity 241. The auxiliary housing 200B prevents the first and second magnetic assemblies 300A and 300B from falling off the measuring device 001 while also concealing the magnetic assemblies, enhancing the product's aesthetics.

[0161] Of course, the auxiliary housing 200B may also include a second magnetic assembly 300B. In this case, since the second magnetic assembly 300B is located on the auxiliary housing 200B, the main housing 200A does not necessarily need to be provided with the second accommodating cavity 120 .

[0162] As previously mentioned, in some embodiments, the measuring device 001 may further include a handheld portion 280. As shown in FIG17B , the side portion 240 of the housing 200 may be provided with a handheld portion 280. Specifically, the side portion of the auxiliary housing 200B may be provided with a handheld portion. Providing the handheld portion 280 makes it easier for the user to remove the measuring device 001 from the surface of an object. In particular, when one side portion 240 of the measuring device 001 is provided with a second magnetic component 300B, a handheld portion 280 may be provided on the other side to facilitate the user's grasping. The handheld portion 280 may be designed to fit the size of the user's hand. The shape of the handheld portion 280 may be designed to be ergonomically designed. This specification does not limit this.

[0163] In some embodiments, the measuring device 001 may also have a slope measurement function. Slope measurement can measure the slope of a target object (e.g., a golf hole) relative to the laser measuring device. The laser measuring device can compensate for the distance between itself and the target object based on the linear distance and the slope, obtaining a compensated distance and providing it to the user. The user can then calculate the swing angle and force based on the compensated distance.

[0164] For user convenience, the measuring device 001 may be equipped with a slope measurement switch for turning the slope measurement function on and off. When the measuring device 001 is in use, the user or observer can determine whether the slope measurement function of the measuring device 001 is turned on by observing the slope measurement switch.

[0165] Therefore, in some embodiments, as shown in FIG1 , the measuring device 001 may further include a switch assembly 600. The switch assembly 600 may be mounted on the first end 210.

[0166] As shown in FIG1 , the switch assembly 600 may include a switch key 620. The switch key 620 may be movably connected to the first end 210. The switch key 620 may control the on and off of the slope measurement of the laser measurement assembly 400. The switch key 620 may be movable between a first position and a second position. When the switch key 620 is in the first position, the slope measurement of the measurement assembly 400 is triggered to be enabled. When the switch key 620 is in the second position, the slope measurement of the measurement assembly 400 is triggered to be disabled. When the measurement device 001 is in operation, when the switch key 620 is in the first position, the switch key 620 is exposed outside the housing 200 in at least the front, left, and right viewing angles. In this state, a user or observer can observe the switch key 620 from at least the front, left, right, viewing angles between the front and left viewing angles, and viewing angles between the front and right viewing angles, thereby clearly indicating whether the switch key 620 is on or off. In some embodiments, to further facilitate observation by users or observers, the color of the portion of the switch key 620 exposed outside the housing 200 is different from the color of the housing 200. Users and observers can quickly determine the position of the switch key 620 and whether it is on by the color. It should be noted that the operating state of the measuring device 001 can be the posture in which the measuring device 001 is used. When the measuring device 001 is in the operating state, the front view angle includes the angle of view observed from the laser receiving direction 2. The left view angle and the right view angle are angles determined relative to the front view angle. In some embodiments, the switch key 620 is exposed outside the housing 200 in at least the front view angle, the left view angle, and the right view angle. Alternatively, the switch key 620 can be exposed outside the housing 200 in the front view angle, the left view angle, the right view angle, and the top view angle. The top view angle is also determined relative to the front view angle.

[0167] The movable connection between the switch key 620 and the first end 210 can take various forms. For example, the movable connection can be a rotational connection. Another example is a movable connection. The movable connection can also take other connection forms, such as a screw connection. The switch assembly 600 will be further described below assuming that the movable connection is a rotational connection.

[0168] Figure 18 shows an exploded view of a measuring device 001a according to some embodiments of this specification. For ease of illustration, the laser measuring device shown in Figure 18 is referred to as measuring device 001a. The switch assembly in measuring device 001a is labeled 600a, and the on / off key is labeled 620a.

[0169] As shown in FIG18 , the housing 200 may include an inner housing 270 and an outer housing 250. As previously described, the housing 200 may include a first end 210 and a second end 220. The first end 210 may include an output end cap 212. The output end cap 212 may be fixedly connected to the outer housing 250, or may be fixedly connected to the inner housing 270, or may be fixedly connected to both the outer housing 250 and the inner housing 270. As shown in FIG18 , we will take the fixed connection between the output end cap 212 and the outer housing 250 as an example for description. Methods of fixedly connecting the output end cap 212 and the outer housing 250 include, but are not limited to, integral molding, threaded connection, bonding, riveting, welding, bayonet connection, mortise and tenon connection, and the like. The fixed connection method between the output end cap 212 and the outer housing 250 shown in FIG18 is a snap connection.

[0170] As shown in FIG18 , a stopper 213 may be provided on the first end 210 of the housing 200. The stopper 213 may be used to limit the movement of the switch key 620a. The stopper 213 may be provided on either the outer housing 250 or the inner housing 270.

[0171] As shown in FIG18 , the laser measurement assembly 400 may further include a slope trigger sensor 480. The slope trigger sensor 480 can control the on / off function of the slope measurement. The slope trigger sensor 480 is mounted on the first end 210 and located within the housing 200, opposite the switch key 620a. When the switch key 620a is in the first position, the on signal from the slope trigger sensor 480 is triggered, thereby enabling the slope measurement function. When the switch key 620a is in the second position, the off signal from the slope trigger sensor 480 is triggered, thereby enabling the slope measurement function.

[0172] The slope trigger sensor 480 can be a proximity sensor (also known as a contactless travel switch), that is, it can detect the proximity of the trigger structure without contacting the corresponding trigger structure. Specifically, the slope trigger sensor 480 can be a magnetic induction switch sensor, which triggers the opening and closing of the slope measurement by detecting changes in the magnetic field, such as a reed switch sensor or a Hall effect switch sensor. The slope trigger sensor 480 can be a photoelectric switch sensor, which uses light beam interruption or reflection to achieve switching action, such as a through-beam photoelectric switch sensor, a diffuse reflection photoelectric switch sensor, etc. The slope trigger sensor 480 can be an ultrasonic switch sensor, that is, it judges the existence or distance of an object based on changes in ultrasonic propagation time or echo intensity. The slope trigger sensor 480 can also be a capacitive proximity switch, that is, when the trigger structure approaches, the capacitance value changes to trigger the switch.

[0173] As shown in Figure 18, the switch assembly 600a may include a switch key 620a. In some embodiments, the switch assembly 600a may further include an axial positioning member 640. In some embodiments, the switch assembly 600a may further include a locking mechanism 660 and a locking groove (not shown in Figure 18). The switch key 620a can be rotatably connected to the first end 210. The axial positioning member 640 can be used to axially position the switch key 620a to prevent the switch key 620a from moving in the axial direction relative to the first end 210. The locking mechanism 660 and the locking groove can be respectively provided on the housing 200 and the switch key 620a to achieve locking of the switch key 620a. Specifically, the locking mechanism 660 and the locking groove can be respectively provided on the outer housing 250 and the switch key 620a, or can be respectively provided on the inner housing 270 and the switch key 620a. For the convenience of description, the following description will be based on an example in which the locking mechanism 660 is provided on the inner housing 270 and the locking groove is provided on the switch key 620a.

[0174] FIG19 illustrates a rear view of a switch key 620 a connected to an output end cap 212 according to some embodiments of the present specification; FIG20 illustrates a cross-sectional view AA of FIG19 . As shown in FIG18 to FIG20 , the switch key 620 a can be rotatably connected to the first end 210. The direction of the rotation axis of the rotation connection is the direction of the front view angle. Specifically, the switch key 620 a can be rotatably connected to the output end cap 212 of the first end 210.

[0175] The output end cover 212 may include a mounting shaft 2122. The mounting shaft 2122 is configured to be rotatably connected to the switch key 620a. The rotation axis direction of the mounting shaft 2122 is the direction of the normal viewing angle. The mounting shaft 2122 may include a through hole 2124. When the measuring device 001a is in operation, the laser can pass through the through hole 2124. One end of the mounting shaft 2122 may also include a shoulder 2126. The shoulder 2126 may be disposed at an end of the mounting shaft 2122 that is close to the outside of the housing 200. The shoulder 2126 may abut against one side of the switch key 620a (e.g., the side of the switch key 620a facing the outside of the housing 200), and the axial positioning member 640 may be fixedly connected to the mounting shaft 2122 and abut against the other side of the switch key 620a (e.g., the side of the switch key 620a facing the inside of the housing 200) to axially fix the switch key 620a relative to the mounting shaft 2122. The axial positioning member 640 can be fixedly connected to the mounting shaft 2122 by thread, or can be connected by a slot, etc.

[0176] The output end cover 212 may further include a shielding portion 2128. The shielding portion 2128 may be fixedly connected to the mounting shaft 2122. The shielding portion 2128 may be located on a side of the mounting shaft 2122 away from the interior of the housing 200. The shielding portion 2128 protrudes in the radial direction of the mounting shaft 2122 relative to the mounting shaft 2122 to shield the mounting shaft 2122. In some embodiments, the angle formed by the protruding portion of the shielding portion 2128 in the radial direction of the mounting shaft 2122 and the central axis of the mounting shaft 2122 is no less than 180 degrees. That is, in the radial direction of the mounting shaft 2122, the shielding portion 2128 shields at least half of the mounting shaft 2122.

[0177] The switch key 620a may include a mounting hole 623. The mounting hole 623 may be rotatably coupled to the mounting shaft 2122, thereby enabling the switch key 620a to be rotatably coupled to the first end 210. The shape and size of the mounting hole 623 match those of the mounting shaft 2122. In some embodiments, the mounting hole 623 may be larger than the mounting shaft 2122, thereby enabling the switch key 620a to rotate relative to the mounting shaft 2122. Steps may be provided on either side of the mounting hole 623 to abut against the shaft shoulder 2126 and the axial positioning member 640, respectively.

[0178] The switch key 620a may include a first portion 621 and a second portion 622. When the switch key 620a is rotated to the first position, slope measurement is enabled. At this point, the first portion 621 of the switch key 620a is exposed outside the housing 200 in the viewing directions of the front view, the left view, the right view, and the top view. The second portion 622 of the switch key 620a is located on the side of the shielding portion 2128 facing the interior of the housing 200. That is, the shielding portion 2128 shields the second portion 622, allowing the second portion 622 to be located inside the housing 200. To allow a user or observer to quickly identify the color of the first portion 621, the color of the first portion 621 can be set to a highly saturated color, such as bright red, bright yellow, emerald green, etc. Furthermore, the color of the first portion 621 is different from that of the housing 200, making it easier to quickly distinguish the first portion 621 from the housing 200. For example, the color saturation of the first portion 621 is significantly different from the color saturation of the housing 200, or the color of the first portion 621 is opposite to the color of the housing 200 on the color wheel. Because the color of the first portion 621 is significantly different from the color of the housing 200, the first portion 621 is brightly colored. When the first portion 621 is exposed outside the housing 200, a user or observer can easily observe the first portion 621 of the switch key 620a from multiple different angles, thereby quickly determining that the switch key 620a is in the first position and the slope measurement is on.

[0179] Similarly, when the switch 620a is rotated to the second position, the slope measurement is turned off. At this time, the second portion 622 is exposed outside the housing 200 in the observation directions of the front view, the left view, the right view, and the top view. The first portion 621 is located on the side of the shielding portion 2128 facing the interior of the housing 200. That is, the shielding portion 2128 shields the first portion 621, so that the first portion 621 is located inside the housing 200. The color of the first portion 621 is different from the color of the second portion 622. The different colors can be colors with significantly different saturations. For example, the saturation of the color of the first portion 621 can be 70%-100%, and the saturation of the color of the second portion 622 can be 0%-30%. The different colors can also be colors that are opposite to each other on the color wheel. For example, the color of the first portion 621 can be yellow, and the color of the second portion 622 can be blue. Because the color of the second portion 622 differs significantly from the color of the first portion 621, when the second portion 622 is exposed outside the housing 200, a user or observer can easily observe the second portion 622 of the switch key 620a from multiple angles, thereby quickly determining that the switch key 620a is in the second position and that the slope measurement is off. To further help users or observers quickly distinguish between the first portion 621 and the second portion 622, the color of the second portion 622 can be similar to the color of the housing 200. When the switch key 620a is in the second position, the second portion 622 is exposed outside the housing 200. In this case, because the second portion 622 is similar in color to the housing 200, the second portion 622 is not noticeable relative to the housing 200, and the first portion 621 is hidden within the housing 200. Therefore, the user does not see the conspicuous first portion 621, allowing them to quickly determine that the switch key 620a is in the second position and that the slope measurement is off.

[0180] As previously described, the switch key 620a is rotatably connected to the output end cover 212. To ensure that the first portion 621 is not exposed outside the housing 200 when the switch key 620a is in the second position, the rotation angle of the switch key 620a from the first position to the second position is no greater than 180 degrees. In some embodiments, the rotation angle of the switch key 620a from the first position to the second position can be equal to the angle of the fan-shaped area formed by the first portion 621 and the central axis of the switch key 620a. That is, when the switch key 620a rotates from the first position to the second position, it rotates exactly one dimension of the first portion 621. At this point, the angle of the fan-shaped area formed by the second portion 622 and the central axis of the switch key 620a is greater than or equal to the angle of the fan-shaped area formed by the first portion 621 and the central axis of the switch key 620a. In some embodiments, the angle of the fan-shaped area formed by the radially protruding portion of the shielding portion 2128 and the central axis of the mounting shaft 2122 is equal to the angle of the fan-shaped area formed by the central axis of the mounting shaft 2122.

[0181] The switch key 620a is also provided with a trigger structure 625. The trigger structure 625 can be located on the side of the switch key 620a facing the interior of the housing 200, so as to be opposite the slope trigger sensor 480. When the switch key 620a is in the first position, the trigger structure 625 faces the slope trigger sensor 480, triggering the on signal of the slope trigger sensor 480, thereby controlling the slope measurement to be enabled. When the switch key 620a leaves the first position, the trigger structure 625 moves away from the slope trigger sensor 480, triggering the off signal of the slope trigger sensor 480, thereby controlling the slope measurement to be disabled.

[0182] Depending on the type of slope trigger sensor 480, the trigger structure 625 can have a variety of designs. For example, when the slope trigger sensor 480 is a magnetic induction switch sensor, the trigger structure 625 can be a trigger permanent magnet, a trigger protrusion, or a trigger groove. When the slope trigger sensor 480 is a photoelectric switch sensor, the trigger structure 625 can be a trigger reflector, a trigger through-hole, a trigger protrusion, or a trigger groove. When the slope trigger sensor 480 is an ultrasonic switch sensor, the trigger structure 625 can be a trigger protrusion or a trigger groove. Those skilled in the art will understand that other designs of the trigger structure 625 are also within the scope of protection of this specification. Specifically, the trigger protrusion can be raised in the direction toward the slope trigger sensor 480, and the trigger groove can be recessed in the direction away from the slope trigger sensor 480.

[0183] For example, slope trigger sensor 480 is a Hall sensor, and trigger structure 625 is a trigger groove. When switch key 620a is in the first position, the trigger groove faces the Hall sensor. At this point, the linear distance between the trigger groove and the Hall sensor is large, and the Hall sensor generates a first signal. The first signal is an on signal. When switch key 620a moves out of the first position, the trigger groove moves away from the Hall sensor. At this point, the Hall sensor faces the switch key 620a, and the linear distance between the switch key 620a and the Hall sensor is small, and the Hall sensor generates a second signal. The second signal is an off signal.

[0184] The switch key 620a may also be provided with a limiting groove 627. The limiting groove 627 is distributed along the circumference of the switch key 620a and does not cover the entire circumference of the switch key 620a. In some embodiments, the angle of the fan-shaped area formed by the limiting groove 627 and the central axis of the mounting shaft 2122 is not less than the angle at which the switch key 620a rotates between the first position and the second position. The limiting block 213 may be slidably connected to the limiting groove 627. Specifically, when the switch key 620a rotates, the limiting block 213 slides within the limiting groove 627 to rotate the switch key 620a between the first position and the second position.

[0185] To ensure that the switch key 620a can remain in the first and second positions, the switch assembly 600a further includes a locking mechanism 660 and a locking groove 680. The locking mechanism 660 can be mounted inside the housing 200, facing the switch key 620a. For example, the locking mechanism 660 can be mounted on the inner housing 270. The locking mechanism 660 can be an elastic body that can expand and contract along the axis of rotation. The locking groove 680 can be mounted on the switch key 620a, facing the interior of the housing 220, thereby opposing the locking mechanism 660. The locking groove 680 can include a first locking groove 681 and a second locking groove 682. When the switch key 620a is rotated to the first position, the locking mechanism 660 engages with the first locking groove 681, causing the switch key 620a to remain in the first position. When the switch key 620a is rotated to the second position, the locking mechanism 660 engages with the second locking groove 682, causing the switch key 620a to remain in the second position.

[0186] Figure 21A shows a front view of a measuring device 001a provided in accordance with some embodiments of the present disclosure, in operation; Figure 21B shows a left side view of the measuring device 001a provided in accordance with some embodiments of the present disclosure, in operation; Figure 21C shows a right side view of the measuring device 001a provided in accordance with some embodiments of the present disclosure, in operation; and Figure 21D shows a top view of the measuring device 001a provided in accordance with some embodiments of the present disclosure, in operation. The switch key 620a of the measuring device 001a shown in Figures 21A to 21D is in a first position. As shown in Figures 21A to 21D, when the switch key 620a is rotated to the first position, the first portion 621 of the switch key 620a is exposed outside the housing 200 in the front, left, right, and top viewing directions. At this point, the second portion 622 of the switch key 620a is located inside the housing 200.

[0187] As mentioned above, the active connection may be a mobile connection. Next, we will further describe the switch assembly 600a in the manner that the active connection is a mobile connection.

[0188] Figure 22A shows an exploded view of a measuring device 001b provided according to some embodiments of this specification; Figure 22B shows a right side view of a measuring device 001b provided according to some embodiments of this specification, in operation, with a switch key 620b in the first position. For ease of illustration, the switch assembly in the measuring device 001b shown in Figures 22A and 22B is labeled 600b, and the switch key is labeled 620b. As shown in Figures 22A and 22B, the laser measurement assembly 400 and the telescope assembly 500 are as previously described and will not be further described here. As shown in Figures 22A and 22B, the housing 200 may include an inner housing 270 and an outer housing 250. The inner housing 270 and the outer housing 250 are as previously described and will not be further described here.

[0189] The first end 210 may include a chute 215 extending in the direction of the normal viewing angle. The chute 215 may be structured in a variety of ways. In some embodiments, the chute 215 may be distributed along the circumference of the first end 210 and extend in the direction of the normal viewing angle. In some embodiments, the chute 215 may be a plurality of slots distributed at intervals. The plurality of slots may be evenly distributed at any position of the first end 210 and extend in the direction of the normal viewing angle. In some embodiments, the chute 215 may be a slot disposed near the center of the first end 210 and extending in the direction of the normal viewing angle. For example, the chute 215 may be disposed between the laser emitter and the telescope assembly 500. The chute 215 in the measuring device 001b shown in Figures 22A and 22B is distributed along the circumference of the first end 210 and extends in the direction of the normal viewing angle.

[0190] The switch key 620b can be movably connected to the slide slot 215 in the direction of the front view. Taking Figures 22A and 22B as an example, the sidewall 626 of the switch key 620b can be movably connected to the slide slot 215 in the direction of the front view. When the switch key 620b is in the first position, the switch key 620b protrudes outward relative to the housing 200. In this position, the switch key 620b is exposed outside the housing 200 in at least the front view, left view, and right view. In some embodiments, the switch key 620b can also be exposed outside the housing 200 in the upward and downward view directions. In this position, the user and observer can see the switch key 620b in at least the front view, left view, right view, view angles between the front view and the left view, and view angles between the front view and the right view, thereby quickly determining that the switch key 620b is in the first position and that the slope measurement is enabled. In order to enable a user or observer to quickly identify the switch key 620b, the color of the switch key 620b can be set to a highly saturated color, such as bright red, bright yellow, emerald green, and the like. In addition, the color of the switch key 620b is different from the color of the housing 200 to facilitate quick distinction between the key 620b and the housing 200. For example, the saturation of the color of the switch key 620b is significantly different from the saturation of the color of the housing 200, or the color of the switch key 620b and the color of the housing 200 are opposite colors on the color wheel. Since the color of the switch key 620b is different from the color of the housing 200, and the difference is large, the color of the switch key 620b is bright, and when the switch key 620b is exposed outside the housing 200, the user or observer can easily observe the switch key 620b from multiple different angles.

[0191] When the switch key 620b moves from the first position toward the interior of the housing 200 to the second position, the switch key 620b is not exposed outside the housing 200 in the left and right viewing directions. At this point, the user or observer can quickly determine that the switch key 620b is in the second position and the slope measurement is off in the left and right viewing directions.

[0192] The switch assembly 600b may further include an elastic member 630. The elastic member 630 may be located in the slide groove 215. The two ends of the elastic member 630 are respectively connected to the slide groove 215 and the switch key 620b. The elastic member 630 may be a spring. The two ends of the spring may respectively abut against the slide groove 215 and the switch key 620b. The elastic member 630 provides a restoring force for the switch key 620b, so that the switch key 620b can move from the second position to the first position. When the switch key 620b is located in the first position and is pressed, the elastic member 630 is compressed, and the switch key 620b moves toward the interior of the housing 200 until the switch key 620b moves to the second position. When the switch key 620b is located in the second position and is pressed, the elastic member 630 is decompressed and restored to its original state, and the switch key 620b moves toward the outside of the housing 200 until the switch key 620b moves to the first position.

[0193] The switch assembly 600b may further include a self-locking mechanism 650. The self-locking mechanism 650 is located between the switch key 620b and the first end 210 and may be connected to the first end 210 and the switch key 620b, respectively, to self-lock the switch key 620b in the first position and the second position.

[0194] Figure 23 shows a rear view of a switch key 620b according to some embodiments of this specification. As shown in Figure 23 , a side of the switch key 620b facing the interior of the housing 200 is formed with a receiving cavity 629. An elastic member 630 can be received in the receiving cavity 629.

[0195] Figure 24 shows a top view of a self-locking mechanism 650 provided according to some embodiments of this specification. As shown in Figure 24, the self-locking mechanism 650 may include a locking base 652 and a locking slide 654. The locking base 652 and the locking slide 654 are connected to the switch key 620b and the first end 210, respectively. For example, the locking base 652 is connected to the switch key 620b, and the locking slide 654 is connected to the first end 210. For another example, the locking base 652 is connected to the first end 210, and the locking slide 654 is connected to the switch key 620b.

[0196] The following example illustrates the connection between the locking base 652 and the switch key 620b, and the locking slide 654 and the first end 210. The locking base 652 can be fixedly connected to the switch key 620b. There are various ways to achieve this fixed connection, such as integral molding, threaded connection, welding, riveting, bonding, snap-fit ​​connection, mortise and tenon connection, etc., which are not limited in this specification. The locking base 652 faces the interior of the housing 200. A self-locking groove 6521 can be provided on the locking base 652. The self-locking groove 6521 serves as a guide for the self-locking mechanism 650. The self-locking groove 6521 can be provided with a self-locking position 6523 and a limit position 6525. The shape of the self-locking groove 6521 can be designed as needed, for example, rectangular, elliptical, circular, etc., which are not limited here. One end of the locking slide 654 is rotatably connected to the first end 210, and the other end is located in the self-locking groove 6521 and is slidably connected thereto. When the switch key 620 b moves between the first position and the second position, the locking slide bar 654 moves between the self-locking position 6523 and the limiting position 6525 .

[0197] When the switch key 620b is in the first position, the locking slide 654 is in the limit position 6525. At this time, when the switch key 620b is pressed, the switch key 620b moves from the first position to the second position, driving the locking base 652 toward the interior of the housing 200. The locking slide 654 slides within the self-locking groove 6521 until it reaches the self-locking position 6523. At this point, the switch key 620b reaches the second position and self-locks. When the switch key 620b is in the second position and is pressed, the locking slide 654 disengages the self-locking position 6523. Under the elastic force of the elastic member 630, the switch key 620b moves away from the first end 210 until the locking slide 654 reaches the limit position 6525. At this point, the switch key 620 is in the first position and self-locks.

[0198] The self-locking mechanism 650 can be any structure that achieves self-locking of the switch key 620b through friction or other forces that prevent movement. For example, the self-locking mechanism 650 can be a snap-on self-locking structure, that is, self-locking and unlocking are achieved through the engagement relationship between the tenon and the slot. For example, the self-locking mechanism 650 can be a gear or gear-like self-locking structure, that is, locking and unlocking are achieved by changing the position of the gear or gear-like or using other control structures, such as ratchet pawl self-locking, worm gear self-locking, etc. For another example, the self-locking mechanism 650 can be a friction self-locking mechanism, that is, self-locking and unlocking are achieved by using friction, such as thread self-locking, bevel self-locking, etc.

[0199] In summary, this specification provides a multi-mode laser measuring device 001 using a single photosensitive element. By emitting a first transmitted laser beam and a second transmitted laser beam, measuring device 001 can achieve integrated measurement capabilities, from high-precision close-range measurements to long-range measurements, thereby meeting a variety of measurement needs. Furthermore, the first wavelength of the first transmitted laser beam and the second wavelength of the second transmitted laser beam are both within the sensing band of a single photosensitive element. Because only a single photosensitive element is provided, receiving module 430 can simultaneously receive both the first reflected laser beam and the second reflected laser beam during operation, thereby reducing the internal space of measuring device 001 occupied by the distance measurement components.

[0200] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the particular order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0201] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not expressly stated herein, those skilled in the art will understand that this specification encompasses various reasonable changes, improvements, and modifications to the embodiments. Such changes, improvements, and modifications are intended to be suggested by this specification and are within the spirit and scope of the exemplary embodiments of this specification.

[0202] Furthermore, certain terms in this specification have been used to describe embodiments of this specification. For example, “one embodiment,” “an embodiment,” and / or “some embodiments” mean that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of this specification. Therefore, it is emphasized and should be understood that two or more references to “an embodiment,” “one embodiment,” or “an alternative embodiment” in various parts of this specification do not necessarily refer to the same embodiment. Furthermore, particular features, structures, or characteristics may be appropriately combined in one or more embodiments of this specification.

[0203] It should be understood that in the foregoing descriptions of the embodiments of this specification, to facilitate understanding of a feature and to simplify this specification, various features are combined in a single embodiment, figure, or description thereof. However, this does not necessarily mean that these features are combined. When reading this specification, those skilled in the art may extract some of the features and understand them as separate embodiments. In other words, the embodiments of this specification can also be understood as the integration of multiple sub-embodiments. This also applies when each sub-embodiment contains fewer than all the features of a single previously disclosed embodiment.

[0204] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, articles, etc., cited herein is hereby incorporated by reference in its entirety for all purposes, except for any prosecution document history related thereto, any equivalent that may be inconsistent or conflicting with this document, or any equivalent prosecution document history that may have a limiting effect on the broadest scope of the claims now or hereafter associated with this document. For example, if there is any inconsistency or conflict between the description, definition, and / or use of terms associated with any incorporated material and the terminology, description, definition, and / or use associated with this document, the terminology in this document shall control.

[0205] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of this specification. Other modified embodiments are also within the scope of this specification. Therefore, the embodiments disclosed in this specification are merely examples and not limitations. Those skilled in the art can adopt alternative configurations based on the embodiments in this specification to implement the application in this specification. Therefore, the embodiments of this specification are not limited to the embodiments precisely described in the application.

Claims

1. A multi-mode laser measurement device, comprising: A housing, including a first end and a second end; And A laser measurement component, installed inside the housing, including: A first emission module, including a first emitter configured to emit a first emission laser beam with a first wavelength towards a target when working, and the first emission laser beam is reflected by the target to become a first reflected laser beam; A second emission module, including a second emitter configured to emit a second emission laser beam with a second wavelength towards the target when working, and the second emission laser beam is reflected by the target to become a second reflected laser beam, and the second wavelength is different from the first wavelength; and A receiving module, which receives the reflected laser beam when working and measures the target distance between the laser measurement device and the target based on the reflected laser beam, wherein, The reflected laser beam includes the first reflected laser beam and / or the second reflected laser beam, and the reflected laser beam passes through the first end and is received by the receiving module, The receiving module includes a photosensitive element, and the photosensitive element can detect lasers with the first wavelength and the second wavelength when working.

2. The laser measurement device according to claim 1, characterized in that, The receiving module further includes a receiving optical component; The receiving optical component includes a measurement incident end and a measurement exit end; The photosensitive element is located at the measurement exit end; And The first reflected laser beam with the first wavelength and the second reflected laser beam with the second wavelength enter the receiving optical component from the measurement incident end and propagate along the same measurement optical path to the measurement exit end to enter the photosensitive element.

3. The laser measurement device according to claim 2, characterized in that, The receiving optical component further includes an observation incident end and an observation exit end; Ambient light enters the receiving optical component through the observation incident end, propagates along the observation optical path inside and exits from the observation exit end; and The observation optical path is different from the measurement optical path.

4. The laser measurement device according to claim 3, wherein The receiving optical component includes an objective lens group, a beam splitting module, and an eyepiece group. The objective lens group is installed at the first end, the eyepiece group is installed at the second end, and the eyepiece group is movably connected to the second end along the optical axis direction of the eyepiece group; The objective lens group is the measurement incident end and the observation incident end, and the eyepiece group is the observation exit end; The beam splitting module is located between the objective lens group and the eyepiece group, and includes a first incident end, a first exit end, and a second exit end; The eyepiece group faces the first exit end; The ambient light enters the beam splitting module from the first incident end through the objective lens group, propagates along the observation optical path and exits from the first exit end of the beam splitting module and enters the eyepiece group; and The reflected laser beam enters the beam splitting module from the first incident end through the objective lens group, propagates along the measurement optical path and exits from the second exit end of the beam splitting module and finally enters the photosensitive element.

5. The laser measurement device according to claim 4, characterized in that, The beam splitting module includes: A first prism, including: The first incident end, which receives the ambient light and / or the reflected laser beam, and A beam splitting surface, which reflects the ambient light and transmits the reflected laser beam; a second prism, located between the first prism and the eyepiece assembly, comprising the first emission end, receiving the ambient light emitted from the first prism, and guiding the ambient light to propagate along the observation light path and leave the light splitting module from the first emission end and enter the eyepiece assembly; and The third prism is located between the first prism and the photosensitive element, includes the second output end, receives the reflected laser beam emitted from the first prism, and guides the reflected laser beam to propagate along the measuring optical path and leave the spectroscopic module from the second output end, and finally enter the photosensitive element.

6. The laser measuring device according to claim 5, characterized in that, The light splitting module also includes a second incident end; The laser measuring device also includes: A first display module, located between the eyepiece assembly and the light splitting module, outputting a first display signal toward the eyepiece assembly when in operation; and The second display module is configured to output a second display signal when in operation. The second display signal enters the light splitting module from the second incident end, leaves the light splitting module from the first output end, and is output in the direction of the eyepiece group.

7. The laser measurement device according to claim 4, characterized in that, Also includes: An adjusting knob is connected to the second end for rotation around the optical axis of the eyepiece assembly. A guide groove is provided on the adjusting knob, and the guide groove extends in a spiral direction in the circumference of the adjusting knob. The eyepiece assembly and the adjusting knob are slidably connected along the guide groove. When the adjusting knob is rotated, the adjusting knob drives the eyepiece group to move along the optical axis direction.

8. The laser measurement device according to claim 7, wherein The adjusting knob comprises: a rotatable connection portion, rotatably connected to the second end around the optical axis direction of the eyepiece assembly, the rotatable connection portion comprising the guide groove, and the rotatable connection portion being covered by the housing; and A dial button is connected to the rotating connecting part. The housing is provided with a notch, the dial button is exposed outside the housing through the notch, and the rotating connection part is driven to rotate by turning the dial button. The dial button is arranged in the radial direction of the rotating connection part, the outer surface of the shell is provided with a recessed part, the recessed direction of the recessed part is the direction of the optical axis, and the dial button passes through the notch and is located in the recessed part.

9. The laser measuring device according to claim 8, characterized in that: When the laser measuring device is in working state, the dial button is located below the rotating connecting part; and / or The housing comprises: an inner housing including said second end, an outer shell, fixedly connected to the inner shell and covering the inner shell, the outer shell comprising the recess and the notch, the rotating connection portion being located between the inner shell and the outer shell, and An end cover is connected to the outer shell and covers the rotating connection part.

10. The laser measuring device according to claim 7, characterized in that: The second end includes a connecting shaft, the adjusting knob includes a connecting hole, the connecting shaft is rotatably connected to the connecting hole, The connecting shaft includes an eyepiece hole, the eyepiece group is installed in the eyepiece hole, a through moving groove is provided on the connecting shaft, the moving groove extends along the optical axis direction, a guiding column is provided on the eyepiece group, and the guiding column passes through the moving groove to realize the moving connection between the eyepiece group and the second end along the optical axis direction. The guiding column passes through the guiding groove to realize the sliding connection between the eyepiece group and the adjusting knob along the guiding groove. The moving groove includes a first limiting portion and a second limiting portion, the guiding column moves between the first limiting portion and the second limiting portion, the guiding groove includes a third limiting portion and a fourth limiting portion, and when the guiding column abuts against the first limiting portion or the second limiting portion, the guiding column is located between the third limiting portion and the fourth limiting portion.

11. The laser measuring device according to claim 1, wherein the first emitted laser beam is a continuous laser, the receiving module measures the target distance based on the first reflected laser beam by a phase-type ranging method or a high-speed pulse phase ranging method, the second emitted laser beam is a pulsed laser, and the receiving module measures the target distance based on the second reflected laser beam by a time-of-flight ranging method; and / or when the measuring device operates, it has a first mode, or a second mode, or both the first mode and the second mode. In the first mode, the first emitting module operates, the photosensitive element detects the first reflected laser beam, and the receiving module measures the target distance based on the first reflected laser beam. In the second mode, the second emitting module operates, the photosensitive element detects the second reflected laser beam, and the receiving module measures the target distance based on the second reflected laser beam. Among them, the first mode is a near-distance measurement mode, and the corresponding measurement range of the target distance is 0m to 50m. The second mode is a far-distance measurement mode, and the corresponding measurement range of the target distance is greater than 50m; and / or the first emitting module further includes a first lens group, and the first emitted laser beam is incident on the target object after passing through the first lens group to collimate the first emitted laser beam; and / or the second emitting module further includes a second lens group, and the second emitted laser beam is incident on the target object after passing through the second lens group to collimate the second emitted laser beam.

12. The laser measurement device according to claim 1, characterized in that, It further includes: A first magnetic component is located at the bottom of the housing, so that the laser measuring device can be adsorbed on the surface of a ferromagnetic object through the bottom.

13. The laser measuring device according to claim 12, wherein the bottom includes a first accommodating cavity, the first magnetic component is placed in the first accommodating cavity, the first accommodating cavity is a depression formed outside the bottom, the first magnetic component is connected to the first accommodating cavity through a connecting piece, the housing includes a main housing and an auxiliary housing, and the auxiliary housing is installed on the main housing and covers the depression; and / or The housing includes a main housing and an auxiliary housing. The auxiliary housing is mounted on the main housing and at least partially covers the bottom, and the auxiliary housing has magnetism and serves as the first magnetic assembly.

14. The laser measurement device according to claim 1, wherein the laser measurement assembly is further configured to measure the slope between the laser measurement device and the target object, the laser measurement device further includes a switch assembly mounted at the first end. The switch assembly includes a power switch which is movably connected to the first end. When the power switch is in the first position, it triggers the slope measurement of the laser measurement assembly to turn on, and when the power switch is in the second position, it triggers the slope measurement of the laser measurement assembly to turn off. Wherein, in the working state of the laser measurement device, when the power switch is in the first position, the power switch is at least exposed outside the housing in the viewing directions of the front view, left view and right view, and the color of the part exposed outside the housing is different from the color of the housing. The front view includes the viewing angle observed from the receiving direction of the reflected laser beam.

15. The laser measurement device according to claim 14, wherein being at least exposed outside the housing in the viewing directions of the front view, left view and right view includes being exposed outside the housing in the viewing directions of the front view, left view, right view and top view; and / or the first end includes a sliding groove extending along the direction of the front view, and the power switch is movably connected to the sliding groove. The movable connection includes the sliding connection. When the power switch is in the first position, the power switch protrudes outward relative to the housing. When the power switch moves from the first position to the second position inside the housing, the power switch is not exposed outside the housing in the viewing directions of the left view and right view. Wherein, the switch assembly further includes: an elastic member located in the sliding groove and connected to the sliding groove and the power switch at both ends; and a self-locking mechanism connecting the first end and the power switch to lock the power switch in the first position and the second position.

16. The laser measurement device according to claim 14, characterized in that, The power switch is rotatably connected to the first end, and the axis direction of the rotational connection is the direction of the front view. The movable connection includes the rotational connection. When the power switch rotates to the first position, the first part of the power switch is at least exposed outside the housing in the viewing directions of the front view, left view and right view, and the second part of the power switch is located inside the housing. When the power switch rotates to the second position, the second part is at least exposed outside the housing in the viewing directions of the front view, left view and right view, and the first part is located inside the housing. Wherein, the colors of the first part and the second part are different.

17. The laser measurement device according to claim 16, wherein The first end includes a mounting shaft, the power switch includes a mounting hole, the mounting hole is rotationally connected to the mounting shaft, the mounting shaft includes a through hole, and when the laser measuring device operates, the reflected laser beam passes through the through hole. One end of the mounting shaft includes a shoulder, the shoulder abuts against one side of the power switch, the switch assembly further includes an axial positioning member, which is fixedly connected to the mounting shaft and abuts against the other side of the power switch, so that the power switch is axially fixed relative to the mounting shaft; and / or The laser measuring assembly includes a slope trigger sensor, the slope trigger sensor is installed inside the housing and is disposed opposite to the power switch, the power switch is provided with a trigger structure, when the power switch is in the first position, the trigger structure is opposite to the slope trigger sensor, and the opening signal of the slope trigger sensor is triggered, thereby controlling the opening of the slope measurement. When the power switch leaves the first position, the trigger structure moves away from the slope trigger sensor, and the closing signal of the slope trigger sensor is triggered, thereby controlling the closing of the slope measurement. The trigger structure includes a trigger protrusion or a trigger groove, the trigger protrusion protrudes in a direction close to the slope trigger sensor, and the trigger groove is recessed in a direction away from the slope trigger sensor.

18. A multi-mode laser ranging method, applied to any one of the laser measuring devices according to claims 1 to 17, includes: Starting the second emission module of the laser measuring device to emit a second emission laser beam and the receiving module to receive the second reflected laser beam reflected by the target object; Obtaining a second distance based on the second reflected laser beam; Based on the second reflected laser beam and the second distance, determining whether to start multi-mode operation, wherein in the multi-mode, The laser measuring device starts the first emission module to emit a first emission laser beam and the receiving module to receive the first reflected laser beam reflected by the target object, Obtaining a first distance based on the first reflected laser beam, and Based on the first distance and the second distance, determining and outputting the target distance.

19. The laser ranging method according to claim 18, wherein The target distance is that the first distance corresponding to the second distance is invalid data, The target distance is that the first distance corresponding to the first distance is valid data; and / or The determining whether to start multi-mode operation based on the second reflected laser beam and the second distance includes: Determining that the quality of the reflection surface of the second reflected laser beam meets a preset condition and the second distance is less than a distance threshold, and starting the multi-mode operation; Otherwise Outputting the second distance as the target distance.

20. A multi-mode laser ranging method, applied to any one of the laser measuring devices according to claims 1 to 17, includes: Obtaining a selected mode input by the user, the selected mode being a first mode or a second mode. In the first mode, the first emission module emits a first emission laser beam, and in the second mode, the second emission module emits a second emission laser beam. Measure a target distance between the laser measurement device and a target based on the selected mode; and Output the target distance.

Images