Infrared module and imaging equipment

Abstract

The utility model discloses an infrared module which comprises a lens assembly, a plurality of lens adjusting pieces and a body, the lens adjusting pieces are evenly arranged on the edge of the lens assembly, and the lens adjusting pieces are used for enabling the lens assembly to be installed on the body and adjusting the distance and / or perpendicularity between the lens assembly and the body. The distance between the lens assembly and the body can be adjusted through synchronous adjustment of the multiple lens adjusting pieces, the perpendicularity between the lens assembly and the body can be adjusted by adjusting part of the lens adjusting pieces, and therefore the perpendicularity between the lens and the detector is guaranteed, and the whole face of the optical lens can be clear through focusing.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of infrared products, and in particular to an infrared module. Background Art

[0002] As a special product that uses thermal effect imaging, infrared products are widely used in various fields such as pipeline inspection, forest fire prevention, drone imaging, and assisted driving. Figure 1 As shown, at present, infrared module products are generally composed of the following components: optical lens 1, lens support seat 2, threaded adjustment part 3, infrared detector 4, infrared shutter correction component 5, PCBA 6 and other stacked structures, which are multi-part stacked products. The imaging clarity adjustment of the infrared module product relies on the threaded adjustment part 3 to rotate the optical lens 1 back and forth to achieve focusing. However, there are inconsistent verticality in the stacking of various parts, and there are thread gaps and verticality deviations in the matching of the threads of the optical lens 1 and the lens support seat 2. There is also a problem of inconsistent flatness when the infrared detector 4 is fixed. The accumulation of multiple problems will cause problems with the verticality of the optical lens 1 and the infrared detector 4, resulting in repeated focusing during production. The image is partially blurred and cannot be distinguished, which seriously affects the actual application effect of the product as well as production efficiency and yield. Utility Model Content

[0003] The embodiment of the utility model provides an infrared module to solve the technical problem that the verticality of the optical lens and the infrared detector of the current infrared products cannot be focused.

[0004] To achieve the above-mentioned objectives, in the first aspect, an embodiment of the utility model provides an infrared module, including a lens assembly, a plurality of lens adjustment parts and a main body, wherein the plurality of lens adjustment parts are evenly arranged on the edge of the lens assembly, and the lens adjustment parts are used to install the lens assembly on the main body and adjust the distance and / or verticality between the lens assembly and the main body.

[0005] Optionally, the lens assembly includes an optical lens and a lens support seat, the lens support seat includes a base and a hollow cylinder arranged on the base, and the optical lens is fixedly installed in the middle of the hollow cylinder.

[0006] Optionally, the lens adjustment member includes a focusing screw, and the base is mounted on the body via the focusing screw.

[0007] Optionally, the main body is further provided with a mounting hole, the base is provided with a through hole, and the focusing screw passes through the through hole and is threadedly connected to the mounting hole.

[0008] Optionally, the mounting hole includes a first hole and a second hole opened from the bottom of the first hole, the diameter of the first hole is larger than that of the second hole, and the second hole is provided with an internal thread adapted to the focusing screw.

[0009] Optionally, a guide column is further provided on the outer edge of the through hole of the base, and when the lens assembly is connected to the body, the guide column is inserted into the first hole.

[0010] Optionally, the lens adjustment member further includes a focus spring, and when the lens assembly is connected to the body, the focus spring is sleeved on the focus screw and located in the first hole.

[0011] Optionally, the base is a square plate, and the focusing screws are located at four corners of the square plate.

[0012] Optionally, a circle of light-blocking walls is provided on an edge of a side of the body close to the lens assembly.

[0013] Optionally, when the lens assembly is connected to the body, a glue groove is formed between the base and the focusing screw.

[0014] Optionally, the diameter of the hollow cylinder is the same as the diameter of the optical lens, and the optical lens is embedded in the hollow cylinder.

[0015] In a second aspect, an embodiment of the present utility model further provides an imaging device, comprising the infrared module described in the first aspect.

[0016] The embodiments of the utility model have the following beneficial effects: the infrared module of the embodiments of the utility model can adjust the distance between the lens assembly and the body by synchronously adjusting multiple lens adjustment parts, and the verticality of the lens assembly and the body can be adjusted by adjusting some of the lens adjustment parts, thereby ensuring the verticality between the lens and the detector, so that the optical lens can achieve full-surface clarity through focusing.

[0017] In the above embodiments, the imaging device and the corresponding infrared module embodiments belong to the same concept, and thus have the same technical effects as the corresponding infrared module embodiments, which will not be described in detail here.

[0018] In addition to the above-described purposes, features and advantages, the embodiments of the present utility model have other purposes, features and advantages. The embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the embodiments of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a structural diagram of an existing infrared module;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the infrared module of an embodiment of the utility model;

[0022] Figure 3 It is a projection view of an infrared module of an embodiment of the utility model from one viewing angle;

[0023] Figure 4 yes Figure 3 AA section view;

[0024] Figure 5 yes Figure 4 Enlarged view of point C;

[0025] Figure 6 It is a structural schematic diagram of a lens support seat of an infrared module according to an embodiment of the utility model.

[0026] The symbols in the figure represent:

[0027] 1. Optical lens; 2. Lens support seat; 3. Threaded adjustment piece; 4. Infrared detector; 5. Infrared shutter correction assembly; 6. PCBA; 10. Lens assembly; 101. Base; 102. Hollow cylinder; 103. Through hole; 104. Guide column; 105. Glue dispensing groove; 20. Lens adjustment piece; 201. Focusing screw; 202. Focusing spring; 30. Main body; 301. Light blocking wall; 40. Mounting hole; 401. First hole; 402. Second hole. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the technical solution of the utility model embodiment in conjunction with the accompanying drawings and specific embodiments of the specification. In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application should be the usual meanings understood by the general technicians in the field to which this application belongs. The words "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inside", "outside" and other words indicating orientation used in the description of this application are only used to indicate the relative direction or positional relationship, and do not imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, so it cannot be understood as a limitation to this application. The "first", "second", "third" and similar terms used in the description of this application are only used for descriptive purposes to distinguish different components, and cannot be understood as indicating or implying relative importance. The similar words "one", "one" or "the" used in the description of this application should not be understood as an absolute limitation on quantity, but should be understood as the existence of at least one. The words “include” or “comprising” and the like used in the description of this application mean that the elements or objects preceding the words include the elements or objects listed after the words and their equivalents, but do not exclude other elements or objects.

[0029] It should also be noted that, unless otherwise clearly specified and limited, the words "installed", "connected", "connected" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection 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 a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0030] like Figure 2 As shown, the infrared module of this embodiment includes a lens assembly 10, a plurality of lens adjustment members 20 and a main body 30. The plurality of lens adjustment members 20 are evenly arranged on the edge of the lens assembly 10. The lens adjustment members 20 are used to install the lens assembly 10 on the main body 30 and adjust the distance and / or verticality between the lens assembly 10 and the main body 30.

[0031] Among them, the main body 30 is the same as the main body of the existing infrared product, including a threaded adjustment part 3, an infrared detector 4, an infrared shutter correction assembly 5 and a PCBA 6. Like the existing infrared products, the lens assembly 10 of this embodiment is also installed on the infrared shutter correction assembly 5. The structure and principle of the main body 30 are existing technical means and will not be elaborated here.

[0032] In the infrared module of this embodiment, since multiple lens adjustment parts 20 are evenly arranged on the edge of the lens assembly 10, the distance between each lens adjustment part 20 and the infrared detector 4 of the main body 30 can be adjusted by synchronously adjusting the multiple lens adjustment parts 20. By adjusting some of the lens adjustment parts 20, the verticality between each lens adjustment part 20 and the infrared detector 4 of the main body 30 can be adjusted, thereby ensuring the verticality between the optical lens 1 and the infrared detector 4, ensuring that the entire surface can be clear through focusing.

[0033] In a possible embodiment, Figure 3 and Figure 6 As shown, the lens assembly 10 includes an optical lens 1 and a lens support seat 2 . The lens support seat 2 includes a base 101 and a hollow cylinder 102 disposed on the base 101 . The optical lens 1 is fixedly installed in the middle of the hollow cylinder 102 .

[0034] Specifically, the diameter of the hollow cylinder 102 is the same as the diameter of the optical lens 1 , and the optical lens 1 is embedded in the hollow cylinder 102 .

[0035] in, Figure 1 and Figure 4 A represents the diameter of the optical lens 1, and B represents the diameter of the cylinder on which the optical lens 1 is installed in the traditional infrared product. In this embodiment, the traditional optical lens 1 and the lens support seat 2 are integrated into one, and the overall size can be reduced from B to A, which is conducive to product miniaturization, while reducing additional processing costs and materials, and is conducive to cost optimization.

[0036] In a possible embodiment, Figure 2 and Figure 3 As shown, the lens adjustment member 20 includes a focusing screw 201 , and the base 101 is installed on the body 30 via the focusing screw 201 , so that a glue groove 105 is formed between the base 101 and the focusing screw 201 .

[0037] The focusing screw 201 can be used for focusing the optical lens 1 while achieving a tightening effect, thereby reducing the number of overall parts of the infrared module; when the base 101 is installed on the main body 30 through the focusing screw 201, a glue groove 105 is formed between the nut of the focusing screw 201 and the base 101. After the focusing is completed, the base 101 and the screw cap of the focusing screw 201 are bonded through the glue groove 105, so that the base 101 and the screw cap remain relatively stationary, thereby preventing the internal focusing spring 202 from being deformed, thereby achieving the verticality and front-to-back position without changes, and realizing fixed-focus imaging.

[0038] Specifically, the base 101 in this embodiment is a square plate, and the focusing screws 201 are located at the four corners of the square plate. It should be noted that in other embodiments, the base 101 can also be a circular plate, a regular polygonal plate or other irregular plates, and the focusing screws 201 can be evenly installed on the edge of the base 101. In this embodiment, four focusing screws 201 are installed at the four corners of the square plate. When the focusing screws 201 on one corner, two corners or three corners are adjusted, the distance between the optical lens 1 and the infrared detector 4 at the corresponding position deviates, and at least one corner is fixed, and the distance between the optical lens 1 and the infrared detector 4 at the corresponding position remains unchanged. Therefore, the verticality between the optical lens 1 and the infrared detector 4 can be changed. When the focusing screws 201 at the four corners are adjusted at the same time, the distance between the optical lens 1 as a whole and the infrared detector 4 can be deviated, thereby focusing.

[0039] In a possible embodiment, Figure 4 and Figure 5 As shown, the body 30 is further provided with a mounting hole 40 , the base 101 is provided with a through hole 103 , and the focusing screw 201 passes through the through hole 103 and is threadedly connected to the mounting hole 40 .

[0040] The mounting hole 40 is provided with an internal thread that matches the thread of the focusing screw 201, and the through hole 103 can be a smooth through hole with a smooth inner side or a threaded hole with an internal thread. For ease of processing, the through hole in this embodiment is specifically a smooth through hole.

[0041] In a possible embodiment, the mounting hole 40 includes a first hole 401 and a second hole 402 opened from the bottom of the first hole 401 . The diameter of the first hole 401 is larger than that of the second hole 402 . The second hole 402 is provided with an internal thread adapted to the focusing screw 201 .

[0042] When the focusing screw 201 passes through the through hole 103 and the first hole 401 and is inserted into the second hole 402 to connect the base 101 to the body 30, there is a certain gap between the bottom of the focusing screw 201 and the bottom of the second hole 402, so that the focusing screw 201 can continue to penetrate into the second hole or withdraw from the second hole.

[0043] In a possible embodiment, a guide post 104 is further provided on the outer edge of the through hole 103 of the base 101 . When the lens assembly 10 is connected to the body 30 , the guide post 104 is inserted into the first hole 401 .

[0044] On the side of the base 101 close to the main body 30, a circle of guide columns 104 are set on the outer edge of the through hole 103 of the base 101. The outer diameter of the guide columns 104 is the same as the aperture distance of the first hole 401. By inserting the four guide columns 104 of the base 101 into the four first holes 401 of the main body 30, the base 101 can be initially fixed, which is convenient for the subsequent insertion of the focusing screws 201. At the same time, the guide columns 104 can also enhance the stability between the base 101 and the main body 30.

[0045] In a possible embodiment, the lens adjustment member 20 further includes a focus spring 202 . When the lens assembly 10 is connected to the body 30 , the focus spring 202 is sleeved on the focus screw 201 and is located in the first hole 401 .

[0046] The outer diameter of the focusing spring 202 is the same as the inner diameter of the first hole 401, and the inner diameter of the focusing spring 202 is the same as the diameter of the focusing screw 201. The focusing spring 202 is arranged in the first hole 401. When the four guide posts 104 of the base 101 are inserted into the four first holes 401 of the main body 30, the guide posts 104 abut against the focusing spring 202. The focusing spring 202 lifts the guide posts 104 a certain distance, so that there is a certain distance between the base 101 and the main body 30, thereby ensuring that when the focusing screw 201 is focused, the focusing screw 201 still has a certain space to penetrate into the second hole 402.

[0047] In a possible embodiment, a circle of light-blocking wall 301 is provided on an edge of a side of the body 30 close to the lens assembly 10 .

[0048] A step surface matched with the light-blocking wall 301 is provided on the edge of one side of the base 101 close to the body 30 to ensure that the base 101 can be fully matched with the body 30. The light-blocking wall 301 is used to prevent external light sources from entering the body 30 and affecting imaging.

[0049] The assembly process of the infrared module of this embodiment is as follows: first, the focusing spring 202 is set in the first hole 401, and then the guide column 104 on the base 101 is inserted into the first hole 401 and abuts against the focusing spring 202, and then the focusing screw 201 is passed through the through hole 103 and the first hole 401 and threadedly connected to the second hole 402, and the focusing spring 202 is not compressed, so that there is a certain distance between the base 101 and the main body 30, and then the focus is adjusted by adjusting the four focusing screws 201. When the focal plane of the optical lens 1 completely coincides with the focal plane of the detector 4, glue is dispensed at the glue dispensing groove 105.

[0050] like Figures 2 to 6 As shown, the infrared module provided in the above embodiments of the present application has at least the following characteristics:

[0051] 1. The traditional optical lens 1 and the lens support 2 are integrated into one, and the overall size can be reduced from B to A, which is conducive to product miniaturization, while reducing additional processing costs and materials, and is conducive to cost optimization.

[0052] 2. The four focusing screws 201 can be used to adjust the focus and the verticality, which can effectively make up for the situation where the focus is not clear due to randomness such as poor assembly of the optical lens 1, insufficient flatness / verticality of structural parts, and uneven installation of the detector 4.

[0053] On the other hand, an embodiment of the present application further provides an imaging device including the infrared module of the embodiment of the present application, and the infrared module can ensure the stability of the focal length of the imaging device and the reliability during adjustment.

[0054] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An infrared module, characterized in that: The invention comprises a lens assembly (10), a plurality of lens adjusting components (20) and a body (30), wherein the plurality of lens adjusting components (20) are evenly arranged on the edge of the lens assembly (10), and the lens adjusting components (20) are used to mount the lens assembly (10) on the body (30) and adjust the distance and / or verticality between the lens assembly (10) and the body (30).

2. The infrared module according to claim 1, characterized in that: The lens assembly (10) comprises an optical lens (1) and a lens support seat (2); the lens support seat (2) comprises a base (101) and a hollow cylinder (102) arranged on the base (101); the optical lens (1) is fixedly mounted in the middle of the hollow cylinder (102).

3. The infrared module according to claim 2, characterized in that: The lens adjustment member (20) comprises a focusing screw (201), the base (101) is mounted on the body (30) via the focusing screw (201), and a glue dispensing groove (105) is formed between the base (101) and the focusing screw (201).

4. The infrared module according to claim 3, characterized in that: The body (30) is also provided with a mounting hole (40), the base (101) is provided with a through hole (103), and the focusing screw (201) passes through the through hole (103) and is threadedly connected to the mounting hole (40).

5. The infrared module according to claim 4, characterized in that: The mounting hole (40) comprises a first hole (401) and a second hole (402) opened from the bottom of the first hole (401), the diameter of the first hole (401) is larger than that of the second hole (402), and the second hole (402) is provided with an internal thread adapted to the focusing screw (201).

6. The infrared module according to claim 5, characterized in that: A guide column (104) is also provided on the outer edge of the through hole (103) of the base (101); when the lens assembly (10) is connected to the body (30), the guide column (104) is inserted into the first hole (401).

7. The infrared module according to claim 6, characterized in that: The lens adjustment member (20) further comprises a focus spring (202); when the lens assembly (10) is connected to the body (30), the focus spring (202) is sleeved on the focus screw (201) and is located in the first hole (401).

8. The infrared module according to claim 3, characterized in that: A circle of light-blocking walls (301) is provided on the edge of one side of the body (30) close to the lens assembly (10).

9. The infrared module according to claim 2, characterized in that: The diameter of the hollow cylinder (102) is the same as the diameter of the optical lens (1), and the optical lens (1) is embedded in the hollow cylinder (102).

10. An imaging device, characterized in that: It comprises the infrared module as described in any one of claims 1 to 9.

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