Miniature semiconductor laser range finder suitable for complex working conditions

Abstract

The utility model provides a miniature semiconductor laser range finder suitable for complex working conditions, and relates to the technical field of laser ranging. The device comprises a main body; the sealing groove is formed in the main body and is matched with an upper computer interface; and the waterproof and wear-resistant sealing layers are arranged at the transmitting end and the receiving end of the main body. The sealing groove is formed in the main body, so that the main body can be conveniently butted with an upper computer, and the main body is sealed with the outside when butted with the upper computer; and the waterproof and wear-resistant sealing layer can play a role in preventing scratching and water mist. On the whole, the overall layout is compact, the internal sealing of the range finder is supported, the butt joint sealing of the range finder and the upper computer is ensured, the range finder has the characteristics of dust prevention, water prevention, air tightness, mildew prevention, salt mist prevention and lens water mist prevention, the size use requirements of the range finder and the upper computer in a harsh environment are met, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of laser ranging, in particular to a miniature semiconductor laser rangefinder suitable for complex working conditions. Background Art

[0002] A laser rangefinder is an instrument that accurately measures the distance to a target using a laser (also known as laser ranging). Laser rangefinders have the advantages of simple operation, high measurement accuracy, long working distance, strong anti-interference ability, etc., and are widely used in both military and civilian fields. The selection of the laser wavelength commonly used for ranging on the market is generally based on optical characteristics such as strong atmospheric transmittance and eye safety. Currently, as the requirements for the applicable environment of laser rangefinders increase, there are more and more complex environmental requirements such as dust prevention, waterproofing, airtightness, mildew prevention, salt spray prevention, and no water mist on the lens. In order to enable laser rangefinders to meet more stringent usage requirements, further improvement designs need to be made to the layout, structure, circuit, and optical lenses of laser rangefinders.

[0003] Therefore, there is an urgent need for a miniature semiconductor laser rangefinder suitable for complex working conditions that improves the overall sealing effect and is applicable to complex environments. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a miniature semiconductor laser rangefinder suitable for complex working conditions, which solves the technical problem in the prior art that it cannot meet the stringent usage environment. The many technical effects that can be produced by the preferred technical solutions provided by the utility model are described in detail below.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A miniature semiconductor laser rangefinder suitable for complex working conditions provided by the utility model includes:

[0007] A main body;

[0008] A sealing groove, which is opened on the main body and is adapted to the host computer interface;

[0009] A waterproof and abrasion-proof sealing layer, which is arranged at the transmitting end and the receiving end of the main body.

[0010] Preferably, it further includes:

[0011] A transmitting large objective lens and a receiving large objective lens, the transmitting large objective lens is installed on the outermost layer of the transmitting end, the receiving large objective lens is installed on the outermost layer of the receiving end, and the waterproof and abrasion-proof sealing layer is arranged on the transmitting large objective lens and the receiving large objective lens.

[0012] Preferably, the waterproof and abrasion-proof sealing layer includes:

[0013] A hard coating film and a water-repellent film are provided, and the surfaces of the transmitting large objective lens and the receiving large objective lens are respectively provided with the hard coating film and the water-repellent film.

[0014] Preferably, the transmitting large objective lens, the receiving large objective lens and the main body are fixed by a sealing glue.

[0015] Preferably, a laser emission module is further included, and the laser emission module includes:

[0016] A laser driver circuit board and a laser diode, the laser driver circuit board is installed on the side surface of the main body, and the laser diode is installed on the side of the main body away from the transmitting end.

[0017] Preferably, a laser receiving module is further included, and the laser receiving module includes:

[0018] An avalanche diode and a detector drive circuit, the detector drive circuit is installed on the side of the main body away from the receiving end, and the avalanche diode is installed on the detector drive circuit.

[0019] Preferably, the following is further included:

[0020] A transmitting eyepiece, the transmitting eyepiece is installed in the main body and is correspondingly arranged with the transmitting large objective lens.

[0021] Preferably, the following is further included:

[0022] A receiving medium objective lens, the receiving medium objective lens is installed in the main body and is correspondingly arranged with the receiving large objective lens.

[0023] In the technical solution provided by the present utility model, by providing a sealing groove on the main body, it is convenient for the main body to be docked with the host computer, and it is ensured that the main body is sealed from the outside when docked with the host computer; the waterproof and abrasion-proof sealing layer can play a role in preventing scratches and water mist. Overall, the overall layout is compact, which not only supports the internal sealing of the rangefinder, but also ensures the installation and docking sealing with the host computer, and has the characteristics of dust prevention, waterproof, airtight, mildew prevention, salt spray prevention, and lens waterproof mist, meeting the size use requirements of the rangefinder and the host computer in harsh environments, and having a wider application range. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1It is the first angle schematic diagram of the laser rangefinder of the present utility model;

[0026] Figure 2 It is the second angle schematic diagram of the laser rangefinder of the present utility model;

[0027] Figure 3 It is the schematic diagram of the transmitting antenna and receiving antenna of the present utility model;

[0028] Figure 4 It is the principle schematic diagram of the laser rangefinder of the present utility model.

[0029] In the figure: 1. Control and information processing circuit board; 2. Laser driver circuit board; 3. Transmitting large objective lens; 4. Main body; 5. Receiving large objective lens; 6. Detector drive circuit; 7. Laser diode; 8. Receiving medium objective lens; 9. Transmitting eyepiece; 10. Electrical subsystem; 11. Optical subsystem; 12. Target object; 13. Host computer; 14. Transmitting antenna; 15. Receiving antenna; 16. Laser transmitting module; 17. Laser receiving module; 18. Sealing groove. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present utility model without any creative efforts shall fall within the scope protected by the present utility model.

[0031] Reference Figures 1-4 , the specific embodiment of the present utility model provides a miniature semiconductor laser rangefinder applicable to complex working conditions, including:

[0032] Main body 4;

[0033] Sealing groove 18, the sealing groove 18 is opened on the main body 4 and is adapted to the interface of the host computer 13;

[0034] Waterproof and abrasion-proof sealing layer, the waterproof and abrasion-proof sealing layer is arranged at the transmitting end and receiving end of the main body 4.

[0035] At present, with the increasing requirements for the applicable environment of laser rangefinders, there are more and more complex environmental requirements such as dust prevention, waterproofing, airtightness, mildew prevention, salt spray prevention, and no water mist on the lens. In order to make the laser rangefinder meet more stringent usage requirements, further improvement designs need to be made to the layout, structure, circuit, and optical lens of the laser rangefinder. In this application, by setting a sealing groove 18 on the main body 4, it is convenient for the main body 4 to dock with the host computer 13, ensuring sealing with the outside world when the main body 4 is docked with the host computer 13; the waterproof and abrasion-resistant sealing layer can play a role in preventing scratches and water mist. Overall, the overall layout is compact, which not only supports internal sealing of the rangefinder but also ensures sealing during installation and docking with the host computer 13, with the characteristics of dust prevention, waterproofing, airtightness, mildew prevention, salt spray prevention, and lens waterproofing, meeting the size usage requirements of the rangefinder and the host computer 13 in harsh environments, and having a wider range of applications.

[0036] The further optimized solution also includes:

[0037] The large emission objective lens 3 and the large receiving objective lens 5. The large emission objective lens 3 is installed on the outermost layer of the emission end, and the large receiving objective lens 5 is installed on the outermost layer of the receiving end. The waterproof and abrasion-resistant sealing layer is set on the large emission objective lens 3 and the large receiving objective lens 5.

[0038] The further optimized solution, the waterproof and abrasion-resistant sealing layer includes:

[0039] Hard coating and hydrophobic film. The surfaces of the large emission objective lens 3 and the large receiving objective lens 5 are respectively provided with hard coating and hydrophobic film.

[0040] By respectively setting hard coating and hydrophobic film on the large emission objective lens 3 and the large receiving objective lens 5, it effectively plays a role in preventing scratches and water mist.

[0041] The further optimized solution, the large emission objective lens 3, the large receiving objective lens 5 and the main body 4 are fixed by sealing glue.

[0042] The large emission objective lens 3 and the large receiving objective lens 5 are fixed on the main body 4 by sealing glue to ensure sealing.

[0043] The further optimized solution also includes a laser emission module 16, and the laser emission module 16 includes:

[0044] A laser driver circuit board 2 and a laser diode 7. The laser driver circuit board 2 is installed on the side of the main body 4, and the laser diode 7 is installed on the side of the main body 4 away from the emission end.

[0045] The further optimized solution also includes a laser receiving module 17, and the laser receiving module 17 includes:

[0046] An avalanche diode and a detector drive circuit 6. The detector drive circuit 6 is installed on the side of the main body 4 away from the receiving end, and the avalanche diode is installed on the detector drive circuit 6.

[0047] The further optimized solution also includes:

[0048] The transmitting eyepiece 9 is installed in the main body 4 and is correspondingly arranged with the transmitting large objective lens 3.

[0049] The further optimized solution also includes:

[0050] The receiving middle objective lens 8 is installed in the main body 4 and is correspondingly arranged with the receiving large objective lens 5.

[0051] The transmitting large objective lens 3 and the transmitting eyepiece 9 form a transmitting antenna 14, the receiving large objective lens 5 and the receiving middle objective lens 8 form a receiving antenna 15, and the transmitting antenna 14 and the receiving antenna 15 form an optical sub-system 11; the electrical sub-system 10 includes a control and information processing circuit board 1 and a detector drive circuit 6 (i.e., the receiving and transmitting drive circuit).

[0052] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. as expressed in this article indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0053] In the description of this article, it also needs to be noted that unless otherwise clearly specified and defined, the terms "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0054] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A miniature semiconductor laser rangefinder suitable for complex working conditions, characterized in that: include: Subject (4); A sealing groove (18), the sealing groove (18) being provided on the main body (4) and being adapted to an interface of a host computer (13); A waterproof and wear-resistant sealing layer, wherein the waterproof and wear-resistant sealing layer is arranged at the transmitting end and the receiving end of the main body (4).

2. The miniature semiconductor laser rangefinder suitable for complex working conditions according to claim 1, characterized in that: Also includes: A transmitting large objective lens (3) and a receiving large objective lens (5), wherein the transmitting large objective lens (3) is mounted on the outermost layer of the transmitting end, and the receiving large objective lens (5) is mounted on the outermost layer of the receiving end, and the waterproof and wear-resistant sealing layer is arranged on the transmitting large objective lens (3) and the receiving large objective lens (5).

3. The miniature semiconductor laser rangefinder suitable for complex working conditions according to claim 2, characterized in that: The waterproof and wear-resistant sealing layer comprises: A hard coating and a hydrophobic film are coated on the surfaces of the transmitting large objective lens (3) and the receiving large objective lens (5), respectively. The hard coating and the hydrophobic film are coated on the surfaces of the transmitting large objective lens (3) and the receiving large objective lens (5).

4. The miniature semiconductor laser rangefinder suitable for complex working conditions according to claim 2, characterized in that: The transmitting large objective lens (3), the receiving large objective lens (5) and the main body (4) are fixed by means of sealing glue.

5. The miniature semiconductor laser rangefinder suitable for complex working conditions according to claim 1, characterized in that: It also includes a laser emission module (16), wherein the laser emission module (16) includes: A laser driving circuit board (2) and a laser diode (7), wherein the laser driving circuit board (2) is mounted on the side of the main body (4), and the laser diode (7) is mounted on a side of the main body (4) away from the emission end.

6. The miniature semiconductor laser rangefinder suitable for complex working conditions according to claim 1, characterized in that: It also includes a laser receiving module (17), wherein the laser receiving module (17) includes: An avalanche diode and a detector driving circuit (6), wherein the detector driving circuit (6) is mounted on a side of the main body (4) away from the receiving end, and the avalanche diode is mounted on the detector driving circuit (6).

7. The miniature semiconductor laser rangefinder suitable for complex working conditions according to claim 2, characterized in that: Also includes: An emitting eyepiece (9), wherein the emitting eyepiece (9) is installed in the main body (4) and is arranged corresponding to the emitting large objective lens (3).

8. The miniature semiconductor laser rangefinder suitable for complex working conditions according to claim 2, characterized in that: Also includes: A receiving middle objective lens (8) is installed in the main body (4) and is arranged corresponding to the receiving large objective lens (5).

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