Laser ranging module

Abstract

The utility model discloses a laser ranging module, which comprises a shell, the shell is provided with a first laser part, a second laser part and a laser recovery part, the first laser part is provided with a light emitting port, the first laser part is communicated with the second laser part, a visible light laser is arranged in the first laser part, and an infrared laser generator is arranged in the second laser part. A first plane lens is arranged in the first laser part, and a second plane lens is arranged in the second laser part, so that light rays emitted by the infrared laser generator are sequentially refracted by the second plane lens and the first plane lens, then coincide with light rays emitted by the visible light laser and are emitted out at the light ray emitting port; the laser recovery part is used for receiving the light emitted and reflected from the light emitting port. According to the laser ranging module, the structure is simple, the operation is convenient, the distance between the laser ranging module and the target can be measured by recycling the light while the target is measured, the measurement efficiency is improved, and thus the convenience is improved.

Description

Technical Field

[0001] The utility model relates to a laser distance measurement module. Background Art

[0002] Pose measurement is a crucial aspect of geometric metrology, encompassing both 3D angle and position measurement. It is widely used in precision manufacturing, aerospace, military, and communications. Real-time, online measurement of dynamic pose is gaining increasing attention. Currently, commonly used dynamic pose measurement methods suffer from complex systems, challenging key equipment manufacturing, complex optical path alignment, and the interplay between measurement accuracy and range. Furthermore, they are unable to adapt to harsh outdoor environments such as strong sunlight, humidity, and vibration.

[0003] Prior art CN107300383A discloses a laser optical coupling system based on a transflective prism. The system includes an optical path exit window and power and data cable holes on a housing. A green cross laser generator, an infrared laser rangefinder, a plane reflector, and a transflective prism are mounted and fixed within the housing. The green cross laser generator is parallel to the axis of the housing's fixed base, and infrared ranging light emitted by the infrared laser rangefinder is projected onto the transflective prism. The plane reflector is perpendicular to the axis of the fixed base and forms a 45° angle with the axis of the green cross laser generator. The green cross laser beam emitted by the green cross laser generator is reflected by the plane reflector, with the front and rear beams perpendicular. After reflection by the plane reflector, the green cross laser beam is projected onto the transflective prism. The green cross laser beam, after passing through the transflective prism, overlaps with the infrared ranging light beam. This solution lacks a laser recovery function, making it impossible to recover the laser beam for distance measurement during use. Utility Model Content

[0004] The main purpose of this utility model is to provide a laser ranging module to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model proposes a laser ranging module including a shell, the shell having a first laser unit, a second laser unit and a laser recovery unit, the first laser unit, the second laser unit and the laser recovery unit are arranged side by side, the first laser unit has a light emission outlet, the first laser unit and the second laser unit are connected, a visible light laser is provided inside the first laser unit, an infrared laser generator is provided inside the second laser unit, a first plane lens is provided inside the first laser unit, and a second plane lens is provided inside the second laser unit, so that the light emitted by the infrared laser generator is refracted by the second plane lens and the first plane lens in sequence and overlaps with the light emitted by the visible light laser and is emitted at the light emission outlet, and the laser recovery unit is used to receive the light emitted and reflected back from the light emission outlet.

[0006] In one embodiment, the first laser unit has a first cavity, which is hollow, one end of the first cavity is the light emission port, and the other end of the first cavity is a visible light emission port.

[0007] In one embodiment, the second laser unit has a second cavity, one end of the second cavity is the infrared laser emitting end, and the other end of the first cavity is a closed end.

[0008] In one embodiment, the first laser unit and the second laser unit are respectively provided with a first mounting groove and a second mounting groove provided therethrough, and the first plane lens and the second plane lens are respectively clamped and installed in the first mounting groove and the second mounting groove.

[0009] In one embodiment, the first mounting groove is located between the visible light emitting end and the light emitting port.

[0010] In one embodiment, the first plane lens and the second plane lens are arranged in parallel.

[0011] In one embodiment, a laser ranging sensor is provided in the laser recovery unit.

[0012] In one embodiment, the laser ranging module further includes a protective shell that can be covered on the outside of the shell.

[0013] In one embodiment, the housing is provided with a plurality of connection holes.

[0014] In the technical solution of the present utility model, a laser ranging module includes a housing, the housing having a first laser unit, a second laser unit and a laser recovery unit, the first laser unit, the second laser unit and the laser recovery unit being arranged side by side, the first laser unit having a light emission port, the first laser unit and the second laser unit being connected, a visible light laser being provided inside the first laser unit, an infrared laser generator being provided inside the second laser unit, a first plane lens being provided inside the first laser unit, and a second plane lens being provided inside the second laser unit, so that the light emitted by the infrared laser generator is refracted by the second plane lens and the first plane lens in sequence and then overlaps with the light emitted by the visible light laser and is emitted at the light emission port, and the laser recovery unit is used to receive the light emitted from the light emission port and reflected back. Therefore, in the present technical solution, the laser ranging module has a simple structure and is easy to operate. While measuring a target, the distance between the target and the target can be measured by recovering the light, thereby improving measurement efficiency and thus enhancing convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of a laser ranging module according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic structural diagram of the laser ranging module from another perspective of an embodiment of the present utility model.

[0018] Explanation of the accompanying figures: 10, outer shell; 20, first laser part; 21, light emitting port; 22, first mounting groove; 23, visible light emitting end; 30, second laser part; 31, second mounting groove; 32, infrared laser emitting end; 33, closed end; 40, laser recovery part; 41, laser recovery port.

[0019] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0023] Moreover, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] The utility model provides a laser distance measurement module.

[0025] like Figure 1-2 As shown, the laser ranging module provided by the embodiment of the present invention includes a housing 10, the housing 10 has a first laser unit 20, a second laser unit 30 and a laser recovery unit 40, the first laser unit 20, the second laser unit 30 and the laser recovery unit 40 are arranged side by side, the first laser unit 20 has a light emission port 21, the first laser unit 20 and the second laser unit 30 are connected, a visible light laser is provided inside the first laser unit 20, an infrared laser generator is provided inside the second laser unit, a first plane lens is provided inside the first laser unit 20, and a second plane lens is provided inside the second laser unit 30, so that the light emitted by the infrared laser generator is refracted by the second plane lens and the first plane lens in sequence and overlaps with the light emitted by the visible light laser and is emitted at the light emission port 21, and the laser recovery unit 40 is used to receive the light emitted from the light emission port 21 and reflected back.

[0026] In this embodiment, the infrared laser generator in the second laser unit 30 emits infrared laser light, which is refracted by the second and first plane lenses and then emitted from the light emission port 21. The second light emitted by the visible light laser in the first laser unit 20 passes through the first plane lens and overlaps with the first light before being emitted together. This allows the distance to the target to be measured while the light is recovered, improving measurement efficiency and convenience.

[0027] The first laser unit 20 has a first hollow cavity, one end of which is the light emission port 21, and the other end of which is the visible light emission port 23. The second laser unit 30 has a second cavity, one end of which is the infrared laser emission port 32, and the other end of which is a closed end 33. The closed end 33 effectively prevents the infrared laser light from escaping, allowing it to be better refracted by the second plane lens.

[0028] In the above embodiment, the first laser unit 20 and the second laser unit 30 are each provided with a first mounting groove 22 and a second mounting groove 31 extending therethrough. The first plane lens and the second plane lens are respectively mounted in the first mounting groove 22 and the second mounting groove 31. The first plane lens and the second plane lens are arranged parallel to each other, and the first mounting groove 22 is located between the visible light emitting end 23 and the light emitting port 21. In this embodiment, the first plane lens and the second plane lens can be snap-fitted into the first mounting groove 22 and the second mounting groove 31. This allows for convenient replacement of the first and second plane lenses.

[0029] The laser recovery unit 40 is equipped with a laser ranging sensor. A laser recovery port 41 is located on the same side of the laser recovery unit 40 as the light emission port 21. The diameter of the laser recovery port 41 gradually decreases along the length of the laser recovery unit 40. The laser ranging sensor is located at the end of the laser recovery port 41. This contracting shape of the laser recovery port 41 is more conducive to converging the reflected laser light, making it easier for the laser ranging sensor to receive the laser light for distance measurement.

[0030] It is understandable that the specific principles and circuit structures of each laser transmitter and laser receiver belong to the existing technology and will not be described in detail here.

[0031] Generally, the visible light laser installed at the visible light emitting end 23 is a green laser, which is visible light, while the infrared laser generator installed at the infrared laser emitting end 32 is invisible light.

[0032] In addition, the laser ranging module also includes a protective shell that can be covered on the outside of the shell 10. The shell 10 is provided with a plurality of connection holes. The shell 10 can be connected to the protective shell through the connection holes, and the shell 10 and the internal components can be connected through the protective shell.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A laser ranging module, characterized in that: The laser distance measurement module comprises a shell, wherein the shell has a first laser unit, a second laser unit and a laser recovery unit, wherein the first laser unit, the second laser unit and the laser recovery unit are arranged side by side, the first laser unit has a light emission port, the first laser unit and the second laser unit are connected, a visible light laser is provided inside the first laser unit, an infrared laser generator is provided inside the second laser unit, a first plane lens is provided inside the first laser unit, and a second plane lens is provided inside the second laser unit, so that the light emitted by the infrared laser generator is refracted by the second plane lens and the first plane lens in sequence, overlaps with the light emitted by the visible light laser and is emitted at the light emission port (21), and the laser recovery unit (40) is used to receive the light emitted from the light emission port (21) and reflected back.

2. The laser ranging module according to claim 1, characterized in that: The first laser unit (20) has a first cavity, which is hollow, one end of the first cavity is the light emission port (21), and the other end of the first cavity is a visible light emission port (23).

3. The laser ranging module according to claim 2, characterized in that: The second laser unit (30) has a second cavity, one end of the second cavity is an infrared laser emitting end (32), and the other end of the first cavity is a closed end (33).

4. The laser ranging module according to claim 3, characterized in that: The first laser unit (20) and the second laser unit (30) are respectively provided with a first mounting groove (22) and a second mounting groove (31) which are arranged through the first laser unit (20) and the second laser unit (30), and the first plane lens and the second plane lens are respectively clamped and mounted in the first mounting groove (22) and the second mounting groove (31).

5. The laser ranging module according to claim 4, characterized in that: The first mounting groove (22) is located between the visible light emitting end (23) and the light emitting port (21).

6. The laser ranging module according to claim 4, characterized in that: The first plane lens and the second plane lens are arranged in parallel.

7. The laser ranging module according to claim 1, characterized in that: A laser distance measuring sensor is provided in the laser recovery part (40).

8. The laser ranging module according to any one of claims 1 to 7, characterized in that: The laser distance measuring module further comprises a protective shell which can be arranged outside the housing (10).

9. The laser ranging module according to any one of claims 1 to 7, characterized in that: The housing (10) is provided with a plurality of connection holes.

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