CN221263879U - Periscope type infrared imaging module, infrared imaging instrument and infrared imaging equipment - Google Patents
Periscope type infrared imaging module, infrared imaging instrument and infrared imaging equipment Download PDFInfo
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- CN221263879U CN221263879U CN202323061583.2U CN202323061583U CN221263879U CN 221263879 U CN221263879 U CN 221263879U CN 202323061583 U CN202323061583 U CN 202323061583U CN 221263879 U CN221263879 U CN 221263879U
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Abstract
The utility model relates to the technical field of infrared imaging, and discloses a periscope type infrared imaging module, an infrared imaging instrument and infrared imaging equipment, which comprise the following components: an infrared focal plane detector; an infrared lens for imaging an external live-action to the infrared focal plane detector; an infrared mirror for changing a propagation direction of an infrared ray passing through the infrared lens; the shutter is electrically connected with the infrared focal plane detector; and the structural component is used for fixing the infrared focal plane detector, the infrared lens and the infrared reflecting mirror. In the periscope type infrared imaging module, the infrared reflecting mirror is added in the imaging light path, the propagation direction of infrared light passing through the infrared lens is changed, imaging is realized by focusing of the infrared focal plane detector, the periscope type light path is used for folding the infrared thermal imaging light path, the module volume can be reduced, further, the imaging requirement of long focus can be realized under the smaller module size, and the imaging performance of the infrared imaging module is improved.
Description
Technical Field
The utility model relates to the technical field of infrared imaging, in particular to a periscope type infrared imaging module, an infrared imager and infrared imaging equipment.
Background
Uncooled infrared imaging modules are often applied to the fields of sighting, search and rescue and the like, and in order to obtain a good observation effect on a remote target, a long-focus lens is usually adopted in the product.
However, the size of the uncooled infrared imaging module is directly related to the focal length of the lens, and a long focal length uncooled infrared imaging module tends to mean a larger module size. This contradiction is detrimental to the integration of uncooled infrared imaging modules. In the related technical scheme, the current long-focus infrared thermal imaging module is limited by the volume of the module and cannot be installed in highly integrated flattening equipment such as mobile phones and tablet computers.
Disclosure of utility model
Therefore, the utility model aims to provide a periscope type infrared imaging module, an infrared imaging instrument and infrared imaging equipment, which can realize the imaging requirement of long focus under the smaller module size and improve the imaging performance of the infrared imaging module. The specific scheme is as follows:
A periscope type infrared imaging module, comprising:
An infrared focal plane detector;
An infrared lens for imaging an external live-action to the infrared focal plane detector;
an infrared mirror for changing a propagation direction of an infrared ray passing through the infrared lens;
The shutter is electrically connected with the infrared focal plane detector;
And the structural component is used for fixing the infrared focal plane detector, the infrared lens and the infrared reflecting mirror.
Preferably, in the periscope type infrared imaging module provided by the embodiment of the utility model, the infrared lens includes a first lens for transmitting infrared rays to the infrared reflecting mirror, and a second lens which is close to the infrared focal plane detector and is used for receiving the rays reflected by the infrared reflecting mirror.
Preferably, in the periscope type infrared imaging module provided by the embodiment of the utility model, the infrared reflecting mirror is a plane or a curved surface with an infrared reflecting film layer.
Preferably, in the periscope type infrared imaging module provided by the embodiment of the utility model, the shutter is connected with an electric control flat cable; the structural member is provided with a wire arrangement groove;
The electric control flat cable passes through the flat cable slot and is electrically connected with the circuit board of the infrared focal plane detector.
Preferably, in the periscope type infrared imaging module provided by the embodiment of the utility model, the component of the shutter is located between the second lens and the infrared focal plane detector.
Preferably, in the periscope type infrared imaging module provided by the embodiment of the utility model, the structural member and the infrared focal plane detector are fixed by screws;
The structural member is fixedly connected with the infrared lens through the stepped hole by dispensing.
Preferably, in the periscope type infrared imaging module provided by the embodiment of the utility model, the structural member comprises a rectangular prism structural member;
The infrared reflecting mirror is fixed on the inclined surface of the rectangular prism structural member.
Preferably, in the periscope type infrared imaging module provided by the embodiment of the utility model, the mechanical half diameter of the first lens and the second lens is smaller than 4mm;
The sum of the distance from the first lens to the infrared reflecting mirror and the distance from the infrared reflecting mirror to the second lens is not more than 8.5mm;
The distance between the second lens and the infrared focal plane detector is larger than the thickness of the shutter.
The embodiment of the utility model also provides an infrared imager, which comprises the periscope type infrared imaging module provided by the embodiment of the utility model.
The embodiment of the utility model also provides infrared imaging equipment, which comprises the infrared imaging instrument provided by the embodiment of the utility model.
According to the technical scheme, the periscope type infrared imaging module provided by the utility model comprises the following components: an infrared focal plane detector; an infrared lens for imaging an external live-action to the infrared focal plane detector; an infrared mirror for changing a propagation direction of an infrared ray passing through the infrared lens; the shutter is electrically connected with the infrared focal plane detector; and the structural component is used for fixing the infrared focal plane detector, the infrared lens and the infrared reflecting mirror.
In the periscope type infrared imaging module provided by the utility model, the infrared reflecting mirror is added in the imaging light path, the propagation direction of infrared light passing through the infrared lens is changed, imaging is realized by focusing the infrared focal plane detector, so that the periscope type light path is used for folding the infrared thermal imaging light path, the volume of the module can be reduced, the imaging requirement of long focus can be further realized under the smaller module size, the imaging performance of the infrared imaging module is improved, and the miniaturization and integration requirements of the infrared imaging module are not influenced.
In addition, the utility model also provides a corresponding infrared imager and infrared imaging equipment aiming at the periscope type infrared imaging module, so that the periscope type infrared imaging module has more practicability, and the infrared imager and the infrared imaging equipment have corresponding advantages.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a periscope type infrared imaging module provided by an embodiment of the utility model;
Fig. 2 is a graph of MTF provided by an embodiment of the present utility model;
FIG. 3 is a field curvature of field provided by an embodiment of the present utility model;
FIG. 4 is a view field distortion chart provided by an embodiment of the present utility model;
Wherein, 1 is infrared focal plane detector, 2 is infrared camera lens, 3 is infrared reflector, 4 is shutter, 5 is the structure, 21 is first lens, 22 is the second lens.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a periscope type infrared imaging module, as shown in figure 1, comprising:
An infrared focal plane detector 1;
an infrared lens 2 for imaging an external live-action to the infrared focal plane detector 1;
an infrared mirror 3 for changing the propagation direction of the infrared light passing through the infrared lens 2;
A shutter 4 electrically connected to the infrared focal plane detector 1;
And the structural component 5 is used for fixing the infrared focal plane detector 1, the infrared lens 2 and the infrared reflecting mirror 3.
In the periscope type infrared imaging module provided by the embodiment of the utility model, the infrared reflecting mirror 3 is added in the imaging light path, the propagation direction of infrared light passing through the infrared lens 2 is changed, imaging is realized by focusing the infrared light on the infrared focal plane detector 1, so that the periscope type light path is used for folding the infrared thermal imaging light path, the module volume can be reduced, the long-focus imaging requirement can be realized under the smaller module size, the imaging performance of the infrared imaging module is improved, and the miniaturization and integration requirements of the infrared imaging module are not influenced.
In a specific implementation, in the periscope type infrared imaging module provided by the embodiment of the utility model, the infrared focal plane detector 1 is a non-refrigeration infrared imaging chip and can output a digital image. Preferably, the area array pixels of the infrared focal plane detector 1 can be selected to be 256×192, and the pixel pitch can be selected to be 12 μm.
In a specific implementation, in the periscope type infrared imaging module provided by the embodiment of the utility model, as shown in fig. 1, the infrared lens 2 may include a first lens 21 for transmitting infrared light to the infrared mirror 3, and a second lens 22 near the near infrared focal plane detector 1 and for receiving the light reflected by the infrared mirror 3.
The infrared lens may be an optical lens composed of a first lens 21 and a second lens 22, where the first lens 21 may be understood as a front lens and the second lens 22 may be understood as a rear lens. The infrared reflecting mirror 3 is added in the imaging light path, so that the propagation direction of the light passing through the first lens 21 (i.e. the front lens) can be changed, and the light can be further propagated along the optical axis direction of the second lens 22 (i.e. the rear lens), and the imaging can be realized by focusing on the infrared focal plane detector 1.
In addition, the number of the first lenses 21 and the second lenses 22 can be one, so that the module size can be ensured to be smaller; the number of the first lens 21 and the second lens 22 may be plural, so that the accuracy of the imaging effect may be increased, but the size may be relatively slightly larger. The number of the first lenses 21 and the second lenses 22 may be specifically set according to actual requirements, which is not limited herein.
In a specific implementation, in the periscope type infrared imaging module provided by the embodiment of the utility model, the infrared reflecting mirror 3 may be a plane or a curved surface with an infrared reflecting film layer. The infrared reflecting film layer of the infrared reflecting mirror 3 is made of an infrared reflecting material, and can be formed by coating.
Preferably, the infrared mirror 3 in fig. 1 may be a parabolic mirror. In practical application, the shape of the infrared reflecting mirror 3 is not limited herein, as long as the infrared reflecting mirror 3 can change the propagation direction of infrared light and deflect the light path in the infrared imaging module.
In a specific implementation, in the periscope type infrared imaging module provided by the embodiment of the utility model, the shutter 4 can be an electrically controlled openable blade for correcting the non-uniformity of infrared imaging. The shutter 4 is connected with an electric control flat cable; the structural member 5 is provided with a wiring groove; the electrically controlled flat cable connected with the shutter 4 can pass through the flat cable slot of the structural member 5 and be electrically connected with the circuit board of the infrared focal plane detector 1.
In a specific implementation, in the periscope type infrared imaging module provided by the embodiment of the utility model, the component of the shutter 4 may be located between the second lens 22 and the infrared focal plane detector 1, and the size guarantee may cover the whole surface of the infrared focal plane detector 1. After the shutter 4 is installed between the second lens 22 and the infrared focal plane detector 1, power supply control is needed, the electric control flat cable is selectively connected with a circuit board of the infrared focal plane detector 1, and the circuit of the infrared focal plane detector 1 is responsible for supplying power.
In a specific implementation, in the periscope type infrared imaging module provided by the embodiment of the utility model, the structural member 5 and the infrared focal plane detector 1 are fixed by screws; the structural member 5 is fixedly connected with the infrared lens 2 through the stepped hole by using dispensing.
Preferably, the structural member 5 may be a blackened metal member. The wire-arranging groove can be formed by processing the inside of the structural member 5; the bus slot is used for placing an electric control bus wire connected with the shutter 4.
In a specific implementation, in the periscope type infrared imaging module provided by the embodiment of the utility model, the structural member 5 may include a rectangular prism structural member; the infrared reflecting mirror 3 is fixed on the inclined surface of the rectangular prism structural member. Preferably, the first lens 21 may be fixed on one straight edge of the rectangular prism structure; the second lens 22 may be secured to the other straight edge of the square prism structure.
In a specific implementation, in the periscope type infrared imaging module provided by the embodiment of the utility model, the mechanical half diameters of the first lens 21 and the second lens 22 can be smaller than 4mm, so that the thickness of the whole structure can be ensured to be within 10mm, namely, the distance from the front surface of the first lens 21 to the rear surface of the structural member 5 is within 10 mm.
In addition, the sum of the distance from the first lens 21 to the infrared reflecting mirror 3 and the distance from the infrared reflecting mirror 3 to the second lens 22 may not exceed 8.5mm, so that interference between the infrared reflecting mirror 3 and the infrared reflecting mirror 2 can be prevented. The second lens 22 is spaced from the infrared focal plane detector 1 by a distance greater than the thickness of the shutter 4 so as not to interfere with the function of the shutter 4.
The periscope type infrared imaging module provided by the utility model is subjected to MTF test, field curvature and distortion measurement, and specific results are as follows:
When the optical index of the periscope type infrared imaging module comprises 7mm of working focal length, 1.1 of F number (f-number) and less than 5% of distortion, the MTF curve is shown in figure 2, the horizontal axis is spatial frequency, the unit is lp/mm, and the vertical axis is the optical transfer function (Optical Transfer Function, OTF) module value. It can be seen from fig. 2 that the central field of view approaches the diffraction limit. When the spatial frequency is 21lp/mm, the edge field of view MTF is greater than 0.5; when the spatial frequency is 42lp/mm, the marginal view field MTF is larger than 0.2, and the periscope type infrared imaging module can meet the clear imaging requirement.
Fig. 3 shows a field curvature plot with field curvature on the horizontal axis in millimeters and normalized field on the vertical axis. Fig. 4 shows a view distortion plot with the distortion percentage on the horizontal axis and the normalized view on the vertical axis. The field curvature map reflects the position change of the beam image points of different view field points from the image plane, and the distortion map reflects the similarity degree of the object images. From fig. 3 and fig. 4, it can be seen that the optical index of the periscope type infrared imaging module can be normally used, and the clear imaging requirement is met.
Based on the same inventive concept, the embodiment of the utility model also provides an infrared imager, which comprises the periscope type infrared imaging module provided by the embodiment of the utility model. Because the principle of solving the problem of the infrared imager is similar to that of the periscope type infrared imaging module, the implementation of the infrared imager can be referred to the implementation of the periscope type infrared imaging module, and the repetition is not repeated.
Based on the same inventive concept, the embodiment of the utility model also provides an infrared imaging device, which comprises the infrared imager provided by the embodiment of the utility model. Since the principle of solving the problem of the infrared imaging device is similar to that of the infrared imaging device, the implementation of the infrared imaging device can be referred to the implementation of the infrared imaging device, and the repetition is omitted.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The periscope type infrared imaging module, the infrared imager and the infrared imaging equipment provided by the utility model are described in detail, and specific examples are applied to illustrate the principle and the implementation mode of the utility model, and the description of the examples is only used for helping to understand the method and the core idea of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.
Claims (10)
1. Periscope type infrared imaging module, its characterized in that includes:
an infrared focal plane detector (1);
-an infrared lens (2) for imaging an external live-action to the infrared focal plane detector (1);
An infrared mirror (3) for changing the propagation direction of infrared light passing through the infrared lens (2);
A shutter (4) electrically connected with the infrared focal plane detector (1);
And the structural component (5) is used for fixing the infrared focal plane detector (1), the infrared lens (2) and the infrared reflecting mirror (3).
2. Periscope type infrared imaging module according to claim 1, characterized in that the infrared lens (2) comprises a first lens (21) for transmitting infrared light rays to the infrared mirror (3), and a second lens (22) close to the infrared focal plane detector (1) for receiving light rays reflected by the infrared mirror (3).
3. Periscope type infrared imaging module according to claim 1, characterized in that the infrared reflecting mirror (3) is a plane or a curved surface with an infrared reflecting film layer.
4. Periscope type infrared imaging module according to claim 1, characterized in that the shutter (4) is connected with an electrically controlled flat cable; the structural member (5) is provided with a wire arrangement groove;
The electric control flat cable passes through the flat cable slot and is electrically connected with the circuit board of the infrared focal plane detector (1).
5. Periscope type infrared imaging module according to claim 2, characterized in that the assembly of shutters (4) is between the second lens (22) and the infrared focal plane detector (1).
6. Periscope type infrared imaging module according to claim 1, characterized in that the structural member (5) and the infrared focal plane detector (1) are fixed by screws;
The structural member (5) is fixedly connected with the infrared lens (2) through a stepped hole by using dispensing.
7. Periscope type infrared imaging module according to claim 1, characterized in that the structural member (5) comprises a rectangular prismatic sub-structural member;
The infrared reflecting mirror (3) is fixed on the inclined surface of the rectangular prism structural member.
8. Periscope-type infrared imaging module according to claim 2, characterized in that the mechanical half-diameter of the first lens (21) and the mechanical half-diameter of the second lens (22) are both smaller than 4mm;
the sum of the distance from the first lens (21) to the infrared mirror (3) and the distance from the infrared mirror (3) to the second lens (22) is not more than 8.5mm;
The distance between the second lens (22) and the infrared focal plane detector (1) is larger than the thickness of the shutter (4).
9. An infrared imager comprising a periscope type infrared imaging module according to any one of claims 1 to 8.
10. An infrared imaging apparatus comprising an infrared imager as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323061583.2U CN221263879U (en) | 2023-11-14 | 2023-11-14 | Periscope type infrared imaging module, infrared imaging instrument and infrared imaging equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323061583.2U CN221263879U (en) | 2023-11-14 | 2023-11-14 | Periscope type infrared imaging module, infrared imaging instrument and infrared imaging equipment |
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| Publication Number | Publication Date |
|---|---|
| CN221263879U true CN221263879U (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202323061583.2U Active CN221263879U (en) | 2023-11-14 | 2023-11-14 | Periscope type infrared imaging module, infrared imaging instrument and infrared imaging equipment |
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| CN (1) | CN221263879U (en) |
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- 2023-11-14 CN CN202323061583.2U patent/CN221263879U/en active Active
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