Infrared thermal imager

Abstract

The utility model relates to an infrared thermal imager, which comprises a lens, a mounting panel and a laser range finder, and is characterized in that the lens comprises a lens main body and an infrared optical lens mounted on the lens main body and is provided with an optical axis extending in the front-back direction; the mounting panel comprises a panel main body and a mounting frame, the panel main body is mounted on the lens main body, the panel main body is also provided with an accommodating hole which is matched with the infrared optical lens and is through along the front-back direction, and the mounting frame is formed in the panel main body and is provided with two frame holes which are distributed at an interval; the laser range finder is connected to the rear side of the mounting frame, and a laser receiving head and a laser emitting head of the laser range finder correspond to the two frame holes respectively. The mounting frame is formed in the panel main body and is integrally arranged with the panel main body, so that the space occupation of the accommodating hole is reduced or even not needed, the infrared optical lens only needs to be provided with a smaller notch or even is accommodated in the accommodating hole without being cut, the energy loss is reduced, and the effect of the infrared thermal imager is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of infrared thermal imaging, and particularly relates to an infrared thermal imager. Background Art

[0002] At present, the vast majority of laser rangefinders used in infrared thermal imagers are externally mounted laser rangefinders, that is, a laser ranging module is fixed to the infrared thermal imager through additional mechanical structures and electronic interfaces. Essentially, they belong to two units. A few use built-in laser rangefinders, that is, the laser rangefinder and the thermal imaging device are integrated. For the infrared thermal imager with a built-in laser rangefinder, the lens is integrated with the laser ranging module. Since a relatively large lens area needs to be cut, the energy of the infrared thermal imager is greatly lost, thereby affecting the core imaging effect. Summary of the Utility Model

[0003] Based on the above description, the utility model provides an infrared thermal imager to solve the problem that the existing infrared thermal imager with a built-in laser rangefinder has a great influence on the imaging effect.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] An infrared thermal imager, comprising:

[0006] A lens, including a lens body and an infrared optical lens mounted on the lens body, and having an optical axis extending in the front-rear direction;

[0007] An installation panel, including a panel body and an installation frame. The panel body is mounted on the lens body. The panel body also has a receiving hole adapted to the infrared optical lens and penetrating in the front-rear direction. The installation frame is formed in the panel body and has two spaced-apart frame holes; and,

[0008] A laser rangefinder, connected to the rear side of the installation frame, and the laser receiving head and the laser transmitting head of the laser rangefinder respectively correspond to the two frame holes.

[0009] Based on the above technical solution, the utility model can also be improved as follows:

[0010] Further, the focal length of the infrared optical lens is set to f, and f ≤ 35 mm.

[0011] Further, the installation frame is formed in the upper part of the panel body, and the lower end surface of the installation frame constitutes the hole wall of the receiving hole;

[0012] At least part of the infrared optical lens abuts against the lower end surface of the installation frame.

[0013] Further, the lens body is further provided with an annular mounting groove, and the inner ring of the annular mounting groove is for mounting the infrared optical lens;

[0014] The mounting panel is mounted in the annular mounting groove and abuts against the front side of the infrared optical lens.

[0015] Further, an annular sealing groove is provided on the periphery of the panel body;

[0016] The mounting panel further includes a sealing ring, and the sealing ring is mounted in the annular sealing groove.

[0017] Further, the infrared optical lens is composed of at least two germanium and sulfur lenses.

[0018] Further, the infrared thermal imager further includes a focusing mechanism, and the focusing mechanism is mounted on the rear side of the lens body.

[0019] Further, the mounting frame is formed with a connecting groove with the notch facing backward. The bottom of the connecting groove is for arranging the two frame holes, and the mounting frame includes a connecting plate located between the two frame holes. At least two through holes are provided on the connecting plate, and the two through holes are spaced apart in the up and down direction;

[0020] The laser rangefinder is provided with two threaded holes respectively corresponding to the two through holes, and each threaded hole and each through hole are connected by screws.

[0021] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0022] The panel body is provided with the accommodating hole, and the panel body is mounted on the lens body. The infrared optical lens is mounted on the lens body and accommodated in the accommodating hole. The mounting frame is formed in the panel body and is integrally provided with the panel body. The mounting frame does not occupy too much space of the accommodating hole while playing the role of mounting the laser rangefinder, so that it is not necessary to cut too much of the infrared optical lens or even not necessary to cut the infrared optical lens to fit the accommodating hole. In this way, the infrared energy loss is reduced or even not caused, and the image quality is improved. And the installation is simple and easy to manufacture. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of an infrared thermal imager provided by an embodiment of the present invention;

[0024] Figure 2 It is Figure 1 an exploded structural diagram of a perspective view of

[0025] Figure 3 It is Figure 1Explosion structure schematic diagram from another perspective;

[0026] Figure 4 Front view schematic diagram of an infrared thermal imager provided by an embodiment of the present utility model;

[0027] Figure 5 For Figure 4 Cross-sectional schematic diagram along A-A.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1. Lens; 11. Lens body; 111. Annular mounting groove; 12. Infrared optical lens; 2. Mounting panel; 21. Panel body; 211. Accommodating hole; 212. Annular sealing groove; 213. Annular boss; 22. Mounting frame; 221. Connecting groove; 222. Connecting plate; 2221. Through hole; 23. Sealing ring; 3. Laser rangefinder; 31. Threaded hole; 4. Focusing mechanism; 5. Infrared sensor; 6. Circuit board assembly. Detailed implementation manners

[0030] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0032] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship between one element or feature shown in the drawings and other elements or features. It should be understood that in addition to the orientation shown in the drawings, spatial relationship terms also include different orientations of the devices during use and operation. For example, if the device in the drawing is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device can also include other orientations (such as rotating 90 degrees or other orientations), and the spatial description terms used herein are accordingly interpreted.

[0033] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection", if there is a transfer of electrical signals or data between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0034] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprise / include" or "have" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0035] Please refer to Figure 1 、 Figure 2 and Figure 4 As shown in

[0036] The panel body is provided with the receiving hole 211, and the panel body is mounted on the lens body 11. The infrared optical lens 12 is mounted on the lens body 11 and received in the receiving hole 211. The mounting frame 22 is formed in the panel body and is integrally provided with the panel body. The mounting frame 22 does not occupy too much space of the receiving hole 211 while playing the role of mounting the laser rangefinder 3, so that it is not necessary to cut too much of the infrared optical lens 12 or even not necessary to cut the infrared optical lens 12 to adapt to the receiving hole 211. Thus, the infrared energy loss is reduced or even not caused, and the image quality is improved. And the installation is simple and easy to manufacture.

[0037] Specifically, in one embodiment, the focal length of the infrared optical lens 12 is set to f, where f ≤ 35 mm. Thus, the size of the infrared optical lens 12 is relatively small. The accommodating hole 211 adapted to the infrared optical lens 12 is also relatively small. At this time, the mounting frame 22 is completely located within the panel body, and there is no need to cut the infrared optical lens 12, ensuring the energy of the infrared optical lens 12.

[0038] In another embodiment, the mounting frame 22 is formed in the upper part of the panel body 21, and the lower end surface of the mounting frame 22 constitutes the hole wall of the accommodating hole 211; at least a part of the infrared optical lens 12 abuts against the lower end surface of the mounting frame 22. Thus, only a small part of the infrared optical lens 12 needs to be cut, reducing energy loss.

[0039] It should be noted that in the present utility model, the length of the lower end surface of the mounting frame 22 is adapted to the chord length formed by the small part of the infrared optical lens 12 that is cut.

[0040] In order to mount the mounting panel 2 on the lens 1, in this embodiment, referring to Figure 1 、 Figure 2 and Figure 5 , the lens body 11 is further provided with an annular mounting groove 111, and the inner ring of the annular mounting groove 111 is used for mounting the infrared optical lens 12; the mounting panel 2 is mounted within the annular mounting groove 111 and abuts against the front side surface of the infrared optical lens 12. Thus, the infrared optical lens 12 can be stably mounted within the lens body 11. In this way, the structure is simple and easy to set up.

[0041] In this embodiment, continue to refer to Figure 1 、 Figure 2 and Figure 5 , the periphery of the panel body 21 is provided with an annular sealing groove 212; the mounting panel 2 further includes a sealing ring 23, and the sealing ring 23 is mounted within the annular sealing groove 212. On the one hand, the sealing ring 23 can increase the friction between the panel body 21 and the annular mounting groove 111, making the panel body 21 more firmly mounted within the annular mounting groove 111. On the other hand, it plays a sealing role to prevent dust from entering the lens 1 through the annular mounting groove 111 and affecting the imaging effect.

[0042] In this embodiment, the infrared optical lens 12 is composed of at least two germanium and sulfur lenses.

[0043] In this embodiment, referring to Figure 2 and Figure 5, the infrared thermal imager further includes a focusing mechanism 4, and the focusing mechanism 4 is installed at the rear side of the lens body 11. The focusing mechanism 4 is used to adjust the focal length to ensure clear images at various distances.

[0044] Further, in this embodiment, referring to Figures 1 to 3 , the mounting frame 22 is formed with a connecting groove 221 with a notch facing backward. The bottom of the connecting groove 221 is used for arranging the two frame holes, and the mounting frame 22 includes a connecting plate 222 located between the two frame holes. At least two through holes 2221 are provided on the connecting plate 222, and the two through holes 2221 are arranged at intervals in the up and down direction; the laser rangefinder 3 is provided with two threaded holes 31 respectively corresponding to the two through holes 2221, and each threaded hole 31 and each through hole 2221 are connected by screws. In this embodiment, the laser rangefinder 3 is received in the connecting groove 221 and is connected to the two through holes 2221 and the two threaded holes 31 respectively by two screws, so as to install the laser rangefinder 3 in the mounting frame 22, and the laser rangefinder 3 can be carried in the connecting groove 221, with a simple structure and stable installation.

[0045] In this embodiment, referring to Figure 2 , a plurality of sleeved annular protrusions 213 are provided on the front side of the panel body 21, and the outer diameters of the plurality of annular protrusions 213 are gradually decreasing from front to back; the arrangement of the plurality of annular protrusions 213 makes the reflecting surface on the front side of the panel body 21 rough, and the influence of light scattering will not occur. It also avoids the accumulation of dust between two adjacent annular protrusions 213 and is convenient for cleaning.

[0046] In addition, referring to Figure 3 and Figure 5 , the infrared thermal imager further includes a circuit board assembly 6 and an infrared sensor 5. The infrared sensor 5 and the circuit board assembly 6 are both arranged at the rear side of the lens 1. The infrared sensor 5 and the laser rangefinder 3 are both electrically connected to the circuit board assembly 6. The infrared sensor 5 receives signals, and the circuit board assembly 6 is used to convert the signals into images for display for the user to distinguish.

[0047] It should be noted that the infrared sensor 5 and the circuit board assembly 6 are common technical features in the art, and the electrical connection between the infrared sensor 5 and the laser rangefinder 3 and the circuit board assembly 6 is a common electrical connection method in the art, which will not be elaborated here.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An infrared thermal imager, characterized in that: include: The lens comprises a lens body and an infrared optical lens mounted on the lens body, and has an optical axis extending in a front-to-back direction; The mounting panel comprises a panel body and a mounting frame, wherein the panel body is mounted on the lens body, the panel body further comprises a receiving hole adapted to the infrared optical lens and extending in the front-to-back direction, and the mounting frame is formed in the panel body and comprises two frame holes spaced apart from each other; as well as, A laser rangefinder is connected to the rear side of the installation frame, and a laser receiving head and a laser emitting head of the laser rangefinder correspond to the two frame holes respectively.

2. The infrared thermal imager according to claim 1, characterized in that: The focal length of the infrared optical lens is set to f, f≤35mm.

3. The infrared thermal imager according to claim 1, characterized in that: The installation frame is formed on the upper part of the panel body, and the lower end surface of the installation frame constitutes the hole wall of the receiving hole; At least a portion of the infrared optical lens abuts against the lower end surface of the mounting frame.

4. The infrared thermal imager according to claim 1, characterized in that: The lens body is also provided with an annular mounting groove, the inner ring of which is used for mounting the infrared optical lens; The mounting panel is installed in the annular mounting groove and abuts against the front side of the infrared optical lens.

5. The infrared thermal imager according to claim 1, characterized in that: An annular sealing groove is provided on the periphery of the panel body; The mounting panel further comprises a sealing ring which is mounted in the annular sealing groove.

6. The infrared thermal imager according to claim 1, characterized in that: The infrared optical lens is composed of at least two germanium and sulfur lenses.

7. The infrared thermal imager according to claim 1, characterized in that: The infrared thermal imager also includes a focusing mechanism, which is installed on the rear side of the lens body.

8. The infrared thermal imager according to claim 1, characterized in that: The installation frame is formed with a connection groove with a notch facing backward, the groove bottom of the connection groove is used for the two frame holes to be set, and the installation frame includes a connection plate located between the two frame holes, and the connection plate is provided with at least two through holes, and the two through holes are spaced apart in the up-down direction; The laser rangefinder is provided with two threaded holes corresponding to the two through holes respectively, and each threaded hole and each through hole are connected by a screw.

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