Infrared lens data compensation device

Abstract

The utility model relates to an infrared lens data compensation device, which comprises a metal shell, a calibration cavity is arranged in the metal shell, the metal shell is provided with a mounting surface, the mounting surface is provided with an opening for an infrared lens to extend into the calibration cavity, and the calibration cavity is provided with an infrared lens. The inner wall of the calibration cavity is coated with a black oxidation coating. The infrared lens data compensation device provided by the utility model solves the problem that the existing blackbody calibration source cannot completely compensate the pixel data of the ultra-wide-angle infrared imaging equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of photoelectric equipment protection, in particular to an infrared lens data compensation device. Background Art

[0002] Infrared imaging is widely used in detection and guidance, technical reconnaissance, surveillance, and monitoring. Before shipment, most products are calibrated and compensated for the nonuniformity of the radiation source, resulting in the gain and offset coefficients for each pixel. However, with changes in temperature and time during use, the residual nonuniformity of the image gradually worsens. In this case, recalibration and re-upload of the compensation coefficients are necessary.

[0003] Most of the current infrared products use black bodies as calibration sources to recalibrate and compensate the products.

[0004] For ultra-wide-angle infrared imaging equipment, the field of view of the lens exceeds 180°, and the blackbody calibration source cannot completely block the lens, making it impossible to perform data compensation for each pixel of the ultra-wide-angle infrared imaging device. Utility Model Content

[0005] The main purpose of the utility model is to provide an infrared lens data compensation device, aiming to solve the problem that the existing blackbody calibration source has incomplete compensation for the pixel data of ultra-wide-angle infrared imaging equipment.

[0006] To achieve the above-mentioned purpose, the present invention proposes an infrared lens data compensation device, including a metal shell, a calibration cavity is provided in the metal shell, and the metal shell has a mounting surface, an opening is provided on the mounting surface for the infrared lens to extend into the calibration cavity, and the inner wall of the calibration cavity is covered with a black oxide coating.

[0007] According to some embodiments of the present invention, the calibration cavity is hemispherical.

[0008] According to some embodiments of the present invention, the thickness of the black oxide coating is consistent at all locations.

[0009] According to some embodiments of the present invention, a locking structure for detachably installing the ultra-wide-angle infrared imaging device is further included, wherein the locking structure is connected to the metal shell and is arranged in a ring shape.

[0010] According to some embodiments of the present invention, the locking structure includes a first locking portion and a second locking portion, wherein one end of the first locking portion and the second locking portion are connected to each other, and the other ends can be close to each other and detachably connected.

[0011] According to some embodiments of the present invention, the locking structure also includes a locking screw and a nut, a connecting port is provided on the first locking portion, a locking groove is provided on the second locking portion corresponding to the connecting port, the nut is arranged in the locking groove, and the locking screw passes through the connecting port and extends into the locking groove to connect with the nut.

[0012] According to some embodiments of the present invention, a limiting washer is sleeved on the locking screw, and the limiting washer is located between the locking ends of the first locking portion and the second locking portion.

[0013] According to some embodiments of the present invention, a release groove is formed on the first locking portion along its length, and the release groove is located on a side of the connecting port close to the metal shell.

[0014] According to some embodiments of the present invention, the inner wall of the locking structure is covered with an elastic buffer portion that can be abutted and fixed with the ultra-wide-angle infrared imaging device.

[0015] According to some embodiments of the present invention, the locking structure is made of metal, and the locking structure and the metal shell are integrally formed.

[0016] The utility model has at least the following beneficial effects:

[0017] In the present invention, a calibration cavity is provided in the metal shell, and the metal shell has a mounting surface. An opening is provided on the mounting surface for the infrared lens to extend into the calibration cavity, and the inner wall of the calibration cavity is covered with a black oxide coating. In this patent, by extending the infrared lens into the calibration cavity of the metal shell, it is ensured that the imaging area of ​​the infrared lens is within the calibration cavity, so that the metal shell completely blocks the infrared lens. Then, because the inner wall of the calibration cavity is covered with a black oxide coating, the metal shell can be used as a calibration source, thereby performing data compensation for each pixel of the ultra-wide-angle infrared imaging device. The infrared lens data compensation device provided by the present invention solves the problem of incomplete compensation of pixel data of ultra-wide-angle infrared imaging devices by existing blackbody calibration sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of an infrared lens data compensation device provided by an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A cross-sectional view of the infrared lens data compensation device AA;

[0021] Figure 3 for Figure 1 Cross-sectional view of the infrared lens data compensation device BB.

[0022] Description of reference numerals:

[0023] 100-Infrared lens data compensation device; 1-Metal housing; 11-Calibration chamber; 2-Locking structure; 21-First locking part; 211-Connection port; 212-Release slot; 22-Second locking part; 221-Locking slot; 23-Locking screw; 24-Nut; 25-Limiting gasket; 26-Elastic buffer part; 3-Warning ribbon. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of 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 them. 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.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications 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 indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. 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.

[0027] The utility model provides an infrared lens data compensation device. Figures 1 to 3This is a specific embodiment of an infrared lens data compensation device provided by the utility model.

[0028] like Figure 2 As shown, an embodiment of the present invention provides an infrared lens data compensation device 100, including a metal shell 1, a calibration cavity 11 is provided in the metal shell 1, and the metal shell 1 has a mounting surface, an opening is provided on the mounting surface for the infrared lens to extend into the calibration cavity 11, and the inner wall of the calibration cavity 11 is covered with a black oxide coating.

[0029] In the present invention, a calibration cavity 11 is provided in the metal shell 1, and the metal shell 1 has a mounting surface. An opening is provided on the mounting surface for the infrared lens to extend into the calibration cavity 11, and the inner wall of the calibration cavity 11 is covered with a black oxide coating. In this patent, by extending the infrared lens into the calibration cavity 11 of the metal shell 1, it is ensured that the imaging area of ​​the infrared lens is within the calibration cavity 11, so that the metal shell 1 completely blocks the infrared lens. Then, because the inner wall of the calibration cavity 11 is covered with a black oxide coating, the metal shell 1 can be used as a calibration source, thereby performing data compensation for each pixel of the ultra-wide-angle infrared imaging device. The infrared lens data compensation device 100 provided by the present invention solves the problem of incomplete compensation of pixel data of ultra-wide-angle infrared imaging devices by existing blackbody calibration sources.

[0030] The shape of the calibration cavity 11 is not limited, as long as the imaging area of ​​the infrared lens is within the calibration cavity 11. For example, in some embodiments, Figure 2 As shown, the calibration cavity 11 is hemispherical. When installed, the infrared lens detector is positioned at the center of the calibration cavity 11, ensuring that the distance from the infrared lens detector to each position on the inner wall of the calibration cavity 11 is consistent, thereby improving the data compensation effect for each pixel of the ultra-wide-angle infrared imaging device.

[0031] Furthermore, in some embodiments, the thickness of the black oxide coating is uniform at all locations, thereby providing an inner surface with uniform heat radiation, thereby improving the data compensation effect of the ultra-wide-angle infrared imaging device.

[0032] There is no limitation on the installation method of the metal housing 1 and the ultra-wide-angle infrared imaging device. For example, in some embodiments, Figure 1 and Figure 2As shown, the infrared lens data compensation device 100 also includes a locking structure 2 for removably attaching the ultra-wide-angle infrared imaging device. The locking structure 2 is connected to the metal housing 1 and is arranged in a ring shape. This arrangement enables the infrared lens data compensation device 100 to be removably attached to the ultra-wide-angle infrared imaging device via the locking structure 2, allowing the infrared lens data compensation device 100 to perform data compensation for each pixel of the ultra-wide-angle infrared imaging device while also acting as a lens cover to prevent dust.

[0033] In some embodiments, as Figure 1 As shown, a warning ribbon 3 is provided on the locking structure 2. When the infrared lens data compensation device 100 acts as a lens cover, in order to prevent the staff from forgetting to remove the infrared lens data compensation device 100, which causes the ultra-wide-angle infrared imaging device to fail to work normally, the warning ribbon 3 is provided to serve as a reminder.

[0034] The specific composition of the locking structure 2 is not limited, as long as the locking structure 2 and the ultra-wide-angle infrared imaging device can be detachably mounted. For example, in some embodiments, Figure 1 As shown, the locking structure 2 includes a first locking portion 21 and a second locking portion 22. The first locking portion 21 and the second locking portion 22 are connected at one end and can be brought into contact with each other and detachably connected at the other end. This arrangement allows the ultra-wide-angle infrared imaging device to be locked and unlocked through the interplay of the locking ends of the first locking portion 21 and the second locking portion 22, thereby enabling detachable installation.

[0035] Furthermore, in some embodiments, Figure 2 As shown, the locking structure 2 further includes a locking screw 23 and a nut 24. The first locking portion 21 is provided with a connection port 211, and the second locking portion 22 is provided with a locking groove 221 corresponding to the connection port 211. The nut 24 is disposed in the locking groove 221. The locking screw 23 passes through the connection port 211 and extends into the locking groove 221 to connect with the nut 24. When the locking screw 23 is tightened, the locking ends of the first locking portion 21 and the second locking portion 22 are driven toward each other. When the locking screw 23 is loosened, the first locking portion 21 rebounds under the action of elastic force and moves away from the second locking portion 22.

[0036] In order to prevent the locking screw 23 from being disconnected from the nut 24 due to excessive tightening of the locking screw 23 by the staff, in some embodiments, as shown in FIG. Figure 2As shown, a limiting washer 25 is sleeved on the locking screw 23 and is located between the locking ends of the first locking portion 21 and the second locking portion 22. The limiting washer 25 limits the movable travel of the locking screw 23, thereby preventing the locking screw 23 from being disconnected from the nut 24 and causing the locking screw 23 to be lost.

[0037] In order to increase the deformation of the first locking portion 21, in some embodiments, as Figure 2 As shown, a release groove 212 is formed along the length of the first locking portion 21. The release groove 212 is located on the side of the connection port 211 that is closer to the metal housing 1. This arrangement reduces the connection area between the movable portion of the first locking portion 21, the second locking portion 22, and the metal housing 1, thereby increasing the deformation of the first locking portion 21 and making it easier to tighten the locking screw 23.

[0038] In order to avoid collision between the ultra-wide-angle infrared imaging device and the locking structure 2 during installation, which may cause surface damage to the ultra-wide-angle infrared imaging device, in some embodiments, such as Figure 3 As shown, the inner wall of the locking structure 2 is covered with an elastic buffer portion 26 that can abut and fix the ultra-wide-angle infrared imaging device. By placing the elastic buffer portion 26 between the ultra-wide-angle infrared imaging device and the inner wall of the locking structure 2, the ultra-wide-angle infrared imaging device and the locking structure 2 are prevented from colliding during installation.

[0039] In some embodiments, the locking structure 2 is made of metal and is integrally formed with the metal housing 1. This configuration increases the service life of the infrared lens data compensation device 100 and improves the assembly efficiency of the various components of the infrared lens data compensation device 100.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An infrared lens data compensation device, characterized in that: It comprises a metal shell with a calibration cavity inside the metal shell and a mounting surface. The mounting surface is provided with an opening for the infrared lens to extend into the calibration cavity, and the inner wall of the calibration cavity is covered with a black oxide coating.

2. The infrared lens data compensation device according to claim 1, wherein: The calibration cavity is arranged in a hemispherical shape.

3. The infrared lens data compensation device according to claim 2, wherein: The thickness of the black oxide coating is consistent at all locations.

4. The infrared lens data compensation device according to claim 1, wherein: It also includes a locking structure for detachable installation of the ultra-wide-angle infrared imaging device, the locking structure is connected to the metal shell, and the locking structure is arranged in a ring shape.

5. The infrared lens data compensation device according to claim 4, wherein: The locking structure includes a first locking portion and a second locking portion. One end of the first locking portion and the second locking portion are connected to each other, and the other ends can be close to each other and detachably connected.

6. The infrared lens data compensation device according to claim 5, wherein: The locking structure also includes a locking screw and a nut. A connecting port is provided on the first locking portion, and a locking groove is provided on the second locking portion corresponding to the connecting port. The nut is arranged in the locking groove, and the locking screw passes through the connecting port and extends into the locking groove to connect with the nut.

7. The infrared lens data compensation device according to claim 6, wherein: A limiting washer is sleeved on the locking screw, and the limiting washer is located between the locking ends of the first locking portion and the second locking portion.

8. The infrared lens data compensation device according to claim 6, wherein: A release groove is formed on the first locking portion along its length direction, and the release groove is located on a side of the connecting port close to the metal shell.

9. The infrared lens data compensation device according to claim 4, wherein: The inner wall of the locking structure is covered with an elastic buffer portion that can be abutted and fixed with the ultra-wide-angle infrared imaging device.

10. The infrared lens data compensation device according to claim 4, wherein: The locking structure is made of metal, and the locking structure and the metal shell are integrally formed.

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