Laser ranging module and sighting telescope system

Abstract

The utility model discloses a laser ranging module and a sighting telescope system, the laser ranging module is reasonable in structural design, a reflector is arranged in a receiving light path, so that the light path of the receiving light path can move towards another direction, that is, the existing linear receiving light path is converted into a turning path with a corner, and the light path of the receiving light path is changed into a turning path with a corner. Therefore, the size of the laser ranging module in the laser receiving and transmitting path direction can be shortened, the size miniaturization of the laser ranging module is achieved, the installation space of the laser ranging module is reduced, the installation application range of the laser ranging module is widened, and the problem that an existing laser ranging module is poor in reliability is solved. The problems that in the prior art, due to the fact that the size in the length direction parallel to a laser receiving and transmitting path is large, the installation occupied space of a laser ranging module on a sighting telescope and other mechanisms is large, miniaturization design of the sighting telescope and other mechanisms is not facilitated, and the application scene of the laser ranging module is limited to a certain degree are solved. According to the sighting telescope system, the laser ranging module is installed on the rail of the sighting telescope.

Description

Technical Field

[0001] This utility model relates to the field of optical instrument technology, and in particular to a novel laser ranging module and aiming scope system. Background Technology

[0002] With the development of laser ranging technology, the demand for miniaturized laser ranging modules is gradually increasing. However, existing laser ranging modules are relatively large, especially along the length parallel to the laser transmission and reception path. This length results in a significant space requirement for mounting the laser ranging module on mechanisms such as sights, hindering the miniaturization of these mechanisms and limiting their application scenarios. Therefore, this invention proposes a miniaturized laser ranging module to address these problems. Utility Model Content

[0003] The purpose of this invention is to provide a novel laser ranging module and aiming scope system. By setting the receiving optical path as a turning path, the size of the laser ranging module in the direction of the laser receiving and transmitting path can be shortened, thereby achieving miniaturization of the laser ranging module. This solves the problem that the existing laser ranging modules occupy a large space when installed on aiming scopes and other mechanisms, which is not conducive to the miniaturization design of aiming scopes and other mechanisms, and also limits the application scenarios of laser ranging modules to a certain extent.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a laser ranging module, including a housing, within which a laser emitting module and a laser reflection signal receiving module are disposed, wherein:

[0006] The laser emitting module includes a laser emitter disposed on the emitting optical path, the laser emitter being used to emit laser signals toward the target along the emitting optical path;

[0007] The laser reflection signal receiving module includes a receiving lens, a reflector, and a receiving APD. The receiving lens and the reflector are arranged on a receiving optical path parallel to the transmitting optical path, and the receiving APD is arranged on the reflecting optical path of the reflector. The reflecting optical path and the receiving optical path are arranged at an angle. The receiving lens is used to receive the laser reflection signal reflected by the target, and the reflector is used to reflect the laser reflection signal to the receiving APD. The receiving APD receives and processes the laser reflection signal.

[0008] Preferably, the angle α between the receiving optical path and the normal of the reflector is 30° to 60°.

[0009] Preferably, the angle α between the receiving optical path and the normal of the reflector is 45°.

[0010] Preferably, the reflector is located 17 mm from the receiving lens, and the receiving APD is located 8.1 mm from the reflected light path of the reflector.

[0011] Preferably, the receiving lens has a rectangular cross-section, and the central axis of the receiving lens is located on the receiving optical path.

[0012] Preferably, the receiving lens has a cross-sectional length of 14.4 mm and a width of 9.2 mm.

[0013] Preferably, the laser emitting module further includes an emitting lens disposed on the emitting optical path, the emitting lens being used to collimate the laser signal and emit it onto the target.

[0014] Preferably, the bottom of the outer casing is provided with a module mounting structure.

[0015] Preferably, the module mounting structure is a card holder, and the side wall of the card holder is provided with a threaded hole for engaging with the tightening screw.

[0016] This utility model also proposes a sight system, including a sight and a laser rangefinder module as described in any one of the above. The sight is provided with a track, and the bottom of the housing is provided with a mounting bracket adapted to the track. The housing is mounted on the track by the mounting bracket, and the mounting bracket is fastened to the track by a tightening screw.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] The laser ranging module proposed in this invention has a reasonable structural design. By setting a reflector in the receiving optical path, the optical path of the receiving optical path can be redirected in another direction, transforming the existing straight receiving optical path into a turning path with corners. This shortens the size of the laser ranging module in the direction of the laser receiving and transmitting path, achieving miniaturization of the laser ranging module, reducing the installation space, and expanding the applicability of the laser ranging module. It solves the problem that existing laser ranging modules, due to their long length in the direction parallel to the laser receiving and transmitting path, occupy a large space when installed on mechanisms such as sights, which is not conducive to the miniaturization design of sights and other mechanisms, and also limits the application scenarios of the laser ranging module to a certain extent.

[0019] In some of the technical solutions proposed in this utility model, the modular mounting structure set at the bottom of the outer shell, together with the tightening screw, enables the laser rangefinder module to be detachably installed on the track of the sight, etc. It is not only securely installed, but also easy to disassemble and assemble, and easy to adjust the installation position of the laser rangefinder module. Moreover, the tightening range of the tightening screw is adjustable, which enables the modular mounting structure to be adapted to various sights, and has strong versatility.

[0020] This utility model proposes a sight system in which the aforementioned laser rangefinder module is installed on the track of the sight, possessing all the features of the aforementioned laser rangefinder module, which will not be described in detail here. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an overall structural diagram of the laser ranging module disclosed in an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 AA cross-sectional view of the laser ranging module;

[0024] Figure 3 This is a schematic diagram of the installation principle of the laser ranging module disclosed in an embodiment of this utility model.

[0025] In the diagram: 1. Laser ranging module; 2. Housing; 3. Laser transmitter; 4. Transmitting lens; 5. Receiving lens; 6. Reflector; 7. Receiving APD; 8. Card slot; 9. Tightening screw; 10. Track. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] One of the objectives of this invention is to provide a novel laser ranging module that, by setting the receiving optical path as a turning path, can shorten the size of the laser ranging module in the direction of the laser receiving and transmitting path, thereby achieving miniaturization of the laser ranging module. This solves the problem that existing laser ranging modules occupy a large amount of space when installed on mechanisms such as sights, which is not conducive to the miniaturization design of such mechanisms and also limits the application scenarios of laser ranging modules to a certain extent.

[0028] Another objective of this invention is to provide a sight system that includes the aforementioned laser rangefinder module.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figure 1 and Figure 2 As shown, this embodiment provides a laser ranging module 1, including a housing 2. A laser emitting module and a laser reflection signal receiving module are disposed within the housing 2. The laser emitting module includes a laser emitter 3 disposed on the emitting optical path, which emits a laser signal towards the target along the emitting optical path. The laser reflection signal receiving module includes a receiving lens 5, a reflector 6, and a receiving APD 7. The receiving lens 5 and the reflector 6 are disposed on a receiving optical path parallel to the emitting optical path, which also serves as the incident optical path of the reflector 6. The receiving APD 7 is disposed on the reflecting optical path of the reflector 6, and the reflecting optical path and the receiving optical path are arranged at an angle. The receiving lens 5 receives the laser reflection signal reflected by the target, and the reflector 6 reflects the laser reflection signal received by the receiving lens 5 to the receiving APD 7. The receiving APD 7 receives and processes the laser reflection signal reflected by the reflector 6 and issues an operation command, which is to measure the distance information between the target and the laser ranging module 1. In this embodiment, the laser ranging module 1 described above, by setting a reflector 6 in the receiving optical path, allows the optical path of the receiving optical path to move in another direction, that is, to transform the existing straight receiving optical path into a turning path with a corner. This shortens the size of the laser ranging module in the direction of the laser receiving and transmitting path, realizes the miniaturization of the laser ranging module, reduces the installation space of the laser ranging module, and at the same time improves the installation applicability range of the laser ranging module. This solves the problem that the existing laser ranging modules have a long size in the length direction parallel to the laser receiving and transmitting path, which causes the laser ranging module to occupy a large space when installed on the aiming scope and other mechanisms, which is not conducive to the miniaturization design of the aiming scope and other mechanisms, and also limits the application scenarios of the laser ranging module to a certain extent.

[0032] In this embodiment, the angle α between the aforementioned receiving optical path and the normal of the reflector 6 is preferably 30° to 60°. The angle α is also called the incident angle of the reflector 6, and the incident angle and reflection angle of the reflector 6 are the same. As a preferred embodiment, such as... Figure 2 As shown, in this embodiment, the angle α between the receiving optical path and the normal of the reflector 6 is 45°. Specifically, as shown... Figure 2 As shown: the receiving optical path is horizontal, and the mirror surface of the reflector 6 is set at 45° with the receiving optical path, so that the reflected optical path of the reflector 6 is vertically upward and perpendicular to the receiving optical path.

[0033] In this embodiment, the preferred distance between the bottom of the receiving lens 5 and the reflection point on the reflector 6 is 17mm, and the receiving APD7 is located at 8.1mm in the reflected light path of the reflector 6 (i.e., the distance between the incident end of the receiving APD7 and the reflection point on the reflector 6 (i.e., the intersection of the receiving light path and the reflector 6) is 8.1mm). These 17mm and 8.1mm dimensions are determined by the focal length of the receiving lens 5; when the focal length of the receiving lens 5 changes, these two distances also change adaptively.

[0034] In this embodiment, the cross-section of the receiving lens 5 is not a conventional circle, but a rectangle; that is, the receiving lens 5 is a quadrangular prism, and its central axis is located on the receiving optical path. As a preferred embodiment, the receiving lens 5 has a rectangular cross-section with a length of 14.4 mm and a width of 9.2 mm. Although cutting the lens into a rectangle reduces the received light flux to some extent, it does not hinder ranging or affect the overall performance.

[0035] In this embodiment, the laser emitting module also includes an emitting lens 4 disposed on the emitting optical path. The laser emitter 3 and the emitting lens 4 are arranged sequentially along the laser emitting direction. The emitting lens 4 is used to collimate the laser signal emitted by the laser emitter 3 and then emit it onto the target.

[0036] In this embodiment, as Figure 1 and Figure 2As shown, the bottom of the preferred housing 2 is provided with a modular mounting structure. This modular mounting structure can be a mounting block, clamp, or mounting base 8, etc. Taking the mounting base 8 as an example, the side wall of the mounting base 8 can be provided with a threaded hole for engaging with the tightening screw 9. After the housing 2 is mounted onto the track 10 of the sight via the mounting base 8, the tightening screw 9 can be screwed into the threaded hole to tighten the track 10, thereby locking and fixing the mounting base 8 and the track 10, completing the installation of the laser rangefinder module 1 on the track 10 of the sight. The modular mounting structure at the bottom of the housing 2 of the laser rangefinder module 1, together with the tightening screw 9, allows for the detachable installation of the laser rangefinder module 1 on the track 10 of the sight, etc. It is not only securely installed but also easy to install and remove, facilitating the adjustment of the installation position of the laser rangefinder module 1. Furthermore, the tightening range of the tightening screw 9 is adjustable, enabling the modular mounting structure to be adapted to various sights, thus exhibiting strong versatility.

[0037] The working principle of the laser ranging module 1 described in this embodiment will be explained in detail below:

[0038] The laser rangefinder module 1 is locked onto the sight rail 10 via the mounting bracket 8.

[0039] When the laser ranging module 1 is working, the laser emitter 3 emits a single or a series of short pulsed laser beams. The emitting lens 4 collimates the laser beam emitted by the laser emitter 3 and projects it onto the target. The laser reflection signal receiving module receives the laser beam reflected from the target and issues an operation command. This operation command measures the distance between the target and the laser ranging module 1. The principle of this distance measurement is as follows: by calculating the time it takes for the laser beam to travel from emission to reception, the distance between the laser ranging module 1 and the target is calculated. The measured distance is displayed on the screen. The working principle of the laser reflection signal receiving module is as follows: the laser beam reflected from the target enters through the receiving lens 5, reaches the reflecting mirror 6, and is reflected by the reflecting mirror 6 to the receiving APD 7.

[0040] The proposed laser ranging module 1 features a rational structural design. Within the limited space of the housing 2, by folding and repositioning the receiving optical path, the internal space of the housing 2 is utilized more compactly, achieving a smaller overall size and space-saving design for the laser ranging module 1. In practical applications, the maximum dimensions of the laser ranging module 1 in the length, width, and height directions are 28mm, 26mm, and 13mm, respectively. The length direction corresponds to the laser signal transmission and reception direction, the height direction to the reflected optical path direction, and the width direction is perpendicular to both the length and height directions.

[0041] It should be noted that the laser emitting module and the laser reflection signal receiving module in this solution are both installed based on the principle of existing laser ranging modules, and can successfully achieve long-distance ranging of 3km.

[0042] Example 2

[0043] This embodiment proposes a sight system, including a sight and a laser rangefinder module 1 disclosed in Embodiment 1. The sight is provided with a track 10, and the bottom of the housing 2 of the laser rangefinder module 1 is provided with a mounting bracket 8 adapted to the track 10. The housing 2 is secured to the track 10 via the mounting bracket 8. Figure 3 As shown, the mounting bracket 8 has a sliding groove that slides into the track 10. After the housing 2 is mounted on the track 10 via the mounting bracket 8, the sliding engagement between the mounting bracket 8 and the track 10 allows the housing 2 to move along the length of the track 10, thus fine-tuning the installation position of the laser rangefinder module 1 on the track 10. After the laser rangefinder module 1 slides to the appropriate installation position, the tightening screw 9 is screwed into the threaded hole on the side wall of the mounting bracket 8 and tightens the track 10, thereby locking the mounting bracket 8 and the track 10 together. This completes the installation of the laser rangefinder module 1 on the track 10 of the scope, forming a scope system equipped with a laser rangefinder module. This scope system can be used on firearms and other weapon equipment.

[0044] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A laser ranging module, comprising a housing (2), wherein a laser emitting module and a laser reflection signal receiving module are disposed within the housing (2), characterized in that: The laser emitting module includes a laser emitter (3) disposed on the emitting optical path, the laser emitter (3) being used to emit laser signals toward the target along the emitting optical path; The laser reflection signal receiving module includes a receiving lens (5), a reflector (6), and a receiving APD (7). The receiving lens (5) and the reflector (6) are arranged on a receiving optical path parallel to the emitting optical path. The receiving APD (7) is arranged on the reflecting optical path of the reflector (6). The reflecting optical path and the receiving optical path are arranged at an angle. The receiving lens (5) is used to receive the laser reflection signal reflected by the target. The reflector (6) is used to reflect the laser reflection signal to the receiving APD (7). The receiving APD (7) receives and processes the laser reflection signal.

2. The laser ranging module according to claim 1, characterized in that, The angle α between the receiving optical path and the normal of the reflector (6) is 30° to 60°.

3. The laser ranging module according to claim 2, characterized in that, The angle α between the receiving optical path and the normal of the reflector (6) is 45°.

4. The laser ranging module according to claim 3, characterized in that, The reflector (6) is located 17 mm from the receiving lens (5), and the receiving APD (7) is located 8.1 mm from the reflected light path of the reflector (6).

5. The laser ranging module according to any one of claims 1 to 4, characterized in that, The receiving lens (5) has a rectangular cross-section, and the central axis of the receiving lens (5) is located on the receiving optical path.

6. The laser ranging module according to claim 5, characterized in that, The receiving lens (5) has a cross-sectional length of 14.4 mm and a width of 9.2 mm.

7. The laser ranging module according to any one of claims 1 to 4, characterized in that, The laser emitting module further includes an emitting lens (4) disposed on the emitting optical path, the emitting lens (4) being used to collimate the laser signal and emit it onto the target.

8. The laser ranging module according to any one of claims 1 to 4, characterized in that, The bottom of the outer shell (2) is provided with a module mounting structure.

9. The laser ranging module according to claim 8, characterized in that, The module mounting structure is a card holder (8), and the side wall of the card holder (8) is provided with a threaded hole for cooperating with the tightening screw (9).

10. A sight system, characterized in that, The device includes a sight and a laser rangefinder module (1) as described in any one of claims 1 to 7. The sight is provided with a track (10), and the bottom of the housing (2) is provided with a mounting bracket (8) adapted to the track (10). The housing (2) is mounted on the track (10) by the mounting bracket (8), and the mounting bracket (8) is fastened to the track (10) by a tightening screw (9).

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