CN214621488U - Thermal imaging camera and monitoring device - Google Patents
Thermal imaging camera and monitoring device Download PDFInfo
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- CN214621488U CN214621488U CN202120836057.0U CN202120836057U CN214621488U CN 214621488 U CN214621488 U CN 214621488U CN 202120836057 U CN202120836057 U CN 202120836057U CN 214621488 U CN214621488 U CN 214621488U
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Abstract
The utility model provides a thermal imaging camera and supervisory equipment. The thermal imaging camera includes: an optical lens having a light exit; the detector is arranged on the image side of the optical lens; the correction device is arranged between the optical lens and the detector and is provided with a light blocking sheet and a light transmitting sheet, the light blocking sheet is used for correcting the nonuniformity of the thermal imaging camera, the light transmitting sheet is used for selecting light transmitted by the thermal imaging camera, and the light blocking sheet and the light transmitting sheet are arranged between the light outlet and the detector in a switchable manner so as to realize different functions. The utility model provides a there is the poor problem of thermal imaging temperature measurement precision in the thermal imaging camera equipment among the prior art.
Description
Technical Field
The utility model relates to a supervisory equipment technical field particularly, relates to a thermal imaging camera and supervisory equipment.
Background
In the field of surveillance technology, thermal imaging has developed at a rapid pace in recent years. Thermal imaging cameras are devices that receive infrared radiation from an object and convert it into a visible image. It not only can use under adverse circumstances such as haze, ice and snow to satisfy the user demand of night and super long distance control. With the development of thermal imaging technology, a single spectral imaging monitoring system cannot meet the safety monitoring requirements of the market on severe environments such as haze and snow, complex monitoring scenes and at night. The camera integrating visible light imaging with the advantages of high pixel, full color, strong resolving power and the like and infrared thermal imaging with the characteristics of long detection distance, strong concealment, capability of penetrating severe environments such as smoke, rain, snow and the like can realize complementary advantages, all-weather uninterrupted monitoring and monitoring effects of lower illumination, longer monitoring distance and wider dynamic range.
The thermal imaging camera has one more temperature detection dimension compared with the traditional visible light camera. Especially in the face of infectious diseases, the non-contact temperature measurement has more and more unique advantages.
In the existing thermal imaging camera, for common observation equipment, a thermal imaging lens and a thermal imaging detector are adopted to collect, process and calculate light energy, and the monitoring of a conventional security scene can be realized by performing rear-end image processing and optimized output. However, for thermal imaging high-precision temperature measurement equipment, the conditions of energy supersaturation and band non-cutoff can occur, and the thermal imaging temperature measurement precision is seriously influenced particularly when a high-temperature object is tested.
That is, the thermal imaging image pickup apparatus in the related art has a problem that the thermal imaging temperature measurement accuracy is poor.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a thermal imaging camera and monitoring device to solve the problem that thermal imaging camera has poor thermal imaging temperature measurement accuracy in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a thermal imaging camera including: an optical lens having a light exit; the detector is arranged on the image side of the optical lens; the correction device is arranged between the optical lens and the detector and is provided with a light blocking sheet and a light transmitting sheet, the light blocking sheet is used for correcting the nonuniformity of the thermal imaging camera, the light transmitting sheet is used for selecting light transmitted by the thermal imaging camera, and the light blocking sheet and the light transmitting sheet are arranged between the light outlet and the detector in a switchable manner so as to realize different functions.
Furthermore, the detector is positioned on the light emitting side of the light outlet and forms an accommodating gap with the light outlet, and the correcting device is movably arranged at the accommodating gap.
Furthermore, the correcting device is arranged at the accommodating gap in a sliding manner so as to realize the switching use of the light blocking sheet and the light transmitting sheet; or the correcting device is rotatably arranged at the accommodating gap so as to realize the switching use of the light blocking sheet and the light transmitting sheet.
Further, the thermal imaging camera further comprises a driving structure, and the driving structure drives the correction device to move so as to realize the switching use of the light blocking sheet and the light transmitting sheet.
Furthermore, the correcting device further comprises a connecting structure, the light blocking sheet and the light transmitting sheet are arranged on the connecting structure, the connecting structure is in driving connection with the driving structure, and the driving structure drives the connecting structure to move.
Further, the light blocking sheet and the light transmitting sheet are arranged on the connecting structure at intervals.
Further, the light blocking sheet and the light transmitting sheet are connected into an integral structure, and the integral structure is in driving connection with the driving structure.
Further, the light blocking sheet comprises a metal reflecting layer, and the metal reflecting layer faces to one side of the detector relative to the light outlet.
Further, the light-transmitting sheet is an optical flat sheet that transmits light in the thermal imaging band.
Further, the light-transmitting sheet is one of a glass sheet, a silicon wafer and a germanium sheet.
According to another aspect of the present invention, there is provided a monitoring device comprising the above thermal imaging camera.
By applying the technical scheme of the utility model, the thermal imaging camera comprises an optical lens, a detector and a correction device, wherein the optical lens is provided with a light outlet; the detector is arranged on the image side of the optical lens; the correction device is arranged between the optical lens and the detector, the correction device is provided with a light blocking sheet and a light transmitting sheet, the light blocking sheet is used for correcting the nonuniformity of the thermal imaging camera, the light transmitting sheet is used for selecting the light transmitted by the thermal imaging camera, and the light blocking sheet and the light transmitting sheet are arranged between the light outlet and the detector in a switchable manner so as to realize different functions.
The correction device is arranged between the optical lens and the detector, so that the non-uniformity correction can be carried out on the thermal imaging camera, the non-uniformity correction function is realized, and the thermal imaging camera can stably work. The light blocking sheet can block light to measure the energy of light entering the light outlet, so that the function of non-uniformity correction is realized. The setting of printing opacity piece can realize the selection of setting a light to realize the control of setting a light, can realize eliminating the condition of energy supersaturation, and then realized high accuracy temperature measurement, with the imaging quality who increases thermal imaging camera.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a thermal imaging camera according to a first embodiment of the present invention; and
FIG. 2 is a schematic diagram showing the movement relationship between the light blocking sheet and the light transmitting sheet in the correction device of FIG. 1;
fig. 3 is a schematic diagram showing a movement relationship between the light blocking sheet and the light transmitting sheet according to the second embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. an optical lens; 20. a detector; 30. a correction device; 31. a light blocking sheet; 32. a light transmitting sheet; 40. the clearance is accommodated.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
In order to solve the problem that thermal imaging camera equipment has the thermal imaging temperature measurement precision poor among the prior art, the utility model provides a thermal imaging camera and supervisory equipment.
As shown in fig. 1 to 3, the thermal imaging camera includes an optical lens 10, a detector 20, and a correction device 30, the optical lens 10 having a light exit port; the detector 20 is disposed on the image side of the optical lens 10; the correction device 30 is disposed between the optical lens 10 and the detector 20, the correction device 30 has a light blocking sheet 31 and a light transmitting sheet 32, the light blocking sheet 31 is used for correcting the nonuniformity of the thermal imaging camera, the light transmitting sheet 32 is used for selecting the light transmitted by the thermal imaging camera, and the light blocking sheet 31 and the light transmitting sheet 32 are switchably disposed between the light outlet and the detector 20 to realize different functions.
By arranging the correction device 30 between the optical lens 10 and the detector 20, the thermal imaging camera can be subjected to non-uniformity correction, so that the function of non-uniformity correction is realized, and the thermal imaging camera can be ensured to work stably. The light can be shielded by arranging the light blocking sheet 31, so that the amount of energy radiated by the light blocking sheet 31 can be measured, and the function of non-uniformity correction is realized. The setting of light-transmitting sheet 32 can realize the selection of focusing to realize the control of focusing, can realize eliminating the condition of energy oversaturation, and then realized the high accuracy temperature measurement, with the formation of image quality that increases thermal imaging camera.
Specifically, the detector 20 is located on the light emitting side of the light outlet and forms an accommodating gap 40 with the light outlet, and the calibration device 30 is movably disposed at the accommodating gap 40. An accommodating gap is formed between the light outlet and the detector, and the correcting device 30 can move in the accommodating gap 40, so that the positions of the light blocking sheet 31 and the light transmitting sheet 32 can be changed, and the light blocking sheet 31 and the light transmitting sheet 32 can be switched for use.
Optionally, the correction device 30 is slidably disposed at the accommodating gap 40 to realize the switching use of the light blocking sheet 31 and the light transmitting sheet 32. The correcting device 30 is slidably disposed in the accommodating gap 40, so that the light blocking sheet 31 and the light transmitting sheet 32 move linearly to change the positions of the light blocking sheet 31 and the light transmitting sheet 32, thereby achieving different functions.
Specifically, the thermal imaging camera further includes a driving structure for driving the correction device 30 to move so as to realize the switching use of the light blocking sheet 31 and the light transmitting sheet 32. The driving structure is configured to drive the correction device 30 to move, so as to change the positions of the light blocking sheet 31 and the light transmitting sheet 32, and thus, to switch the light blocking sheet 31 and the light transmitting sheet 32. The driving structure drives the correcting device 30 to move, so that the blocking condition is not easy to occur, and the movement stability of the correcting device 30 is improved.
Example one
As shown in fig. 1 to 2, the light blocking sheet 31 and the light transmitting sheet 32 are connected to form an integral structure, and the integral structure is in driving connection with the driving structure. The light blocking sheet 31 and the light transmitting sheet 32 are of an integral structure, so that the driving structure drives the integral structure to move, the positions of the light blocking sheet 31 and the light transmitting sheet 32 can be changed simultaneously, and the purpose of switching the light blocking sheet 31 and the light transmitting sheet 32 for use is achieved.
It should be noted that, in the integrated structure shown in fig. 2, a circle of a dotted line on the light blocking sheet 31 is an optically effective area of the optical lens corresponding to the light blocking sheet 31, so as to block an image formed by the optical lens. Or the circle of the dotted line is the light exit corresponding to the light blocking sheet 31.
Specifically, the light blocking sheet 31 includes a metal reflective layer facing the side where the detector 20 is located with respect to the light exit. This arrangement enables the light-blocking sheet 31 to reflect light to reduce the influence of the light on the uniformity correction, and enables the detector 20 to measure the amount of heat radiated from the light-blocking sheet to perform the function of the non-uniformity correction.
Specifically, the light-transmitting sheet 32 is an optical flat sheet that transmits light in the thermal imaging wavelength band. This arrangement allows the light transmissive sheet 32 to transmit infrared light, thereby enabling the thermal imaging camera to utilize infrared light for thermal imaging.
Here, the optical flat sheet that transmits light in the thermal imaging band means a glass sheet having infinite R values on both surfaces, and is capable of transmitting light in the thermal imaging band.
It should be noted that the light-transmitting sheet 32 is provided with a film structure, and the film structure can allow light in a specific wavelength range to pass through, so as to increase the temperature measurement precision of the thermal imaging camera. The film structure on the light-transmissive sheet 32 can be changed according to the use requirement of the thermal imaging camera, so that the light-transmissive sheet 32 can transmit the light to be transmitted.
Optionally, the light-transmissive sheet 32 is one of a glass sheet, a silicon sheet, and a germanium sheet.
The monitoring device comprises a thermal imaging camera as described above. The monitoring equipment with the thermal imaging camera can realize the function of non-uniformity correction, also can realize the condition of energy supersaturation elimination and realize the function of high-precision temperature measurement.
Example two
The difference from the first embodiment is that the correction device moves in a different manner.
As shown in fig. 3, the calibration device 30 is rotatably disposed at the receiving gap 40 to realize the switching use of the light blocking sheet 31 and the light transmitting sheet 32. In the present embodiment, the correcting device 30 can rotate at the accommodating gap 40, so as to change the positions of the light blocking sheet 31 and the light transmitting sheet 32, thereby realizing the switching use of the light blocking sheet 31 and the light transmitting sheet 32.
It should be noted that, in the structure shown in fig. 3, a circle of a dotted line on the light blocking sheet 31 is an optically effective area of the optical lens corresponding to the light blocking sheet 31, so as to block an image formed by the optical lens. Or the circle of the dotted line is the light exit corresponding to the light blocking sheet 31.
EXAMPLE III
The difference from the first embodiment is that the light blocking sheet 31 and the light transmitting sheet 32 are connected in a different manner.
In this embodiment, the calibration device 30 further includes a connection structure, and the light blocking sheet 31 and the light transmissive sheet 32 are disposed on the connection structure, and the connection structure is in driving connection with the driving structure, and the driving structure drives the connection structure to move. By arranging the light blocking sheet 31 and the light transmitting sheet 32 on the connecting structure, the driving structure drives the connecting structure to move, and the connecting structure moves to change the positions of the light blocking sheet 31 and the light transmitting sheet 32, so that the light blocking sheet 31 and the light transmitting sheet 32 can be switched to use.
Specifically, the light blocking sheet 31 and the light transmitting sheet 32 are disposed at intervals on the connection structure. The light blocking sheet 31 and the light transmitting sheet 32 are arranged at intervals, so that interference between the light blocking sheet 31 and the light transmitting sheet 32 can be effectively reduced, and independence of the light blocking sheet 31 and the light transmitting sheet 32 is guaranteed.
It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A thermal imaging camera, comprising:
an optical lens (10), the optical lens (10) having a light exit;
a detector (20), the detector (20) being disposed on an image side of the optical lens (10);
a correction device (30), the correction device (30) is disposed between the optical lens (10) and the detector (20), the correction device (30) has a light blocking sheet (31) and a light transmitting sheet (32), the light blocking sheet (31) is used for non-uniformity correction of the thermal imaging camera, the light transmitting sheet (32) is used for selecting light transmitted by the thermal imaging camera, and the light blocking sheet (31) and the light transmitting sheet (32) are switchably disposed between the light outlet and the detector (20) to realize different functions.
2. The thermal imaging camera according to claim 1, characterized in that the detector (20) is located on the light exit side of the light exit opening and forms a receiving gap (40) with the light exit opening, and the correction device (30) is movably arranged at the receiving gap (40).
3. The thermal imaging camera of claim 2,
the correcting device (30) is arranged at the accommodating gap (40) in a sliding mode to realize switching use of the light blocking sheet (31) and the light transmitting sheet (32); or
The correcting device (30) is rotatably arranged at the accommodating gap (40) to realize the switching use of the light blocking sheet (31) and the light transmitting sheet (32).
4. The thermal imaging camera according to claim 1, further comprising a drive structure that drives the correction device (30) in motion to enable switched use of the light barrier (31) and the light transmissive sheet (32).
5. The thermal imaging camera according to claim 4, characterized in that the correction device (30) further comprises a connection structure on which the light barrier (31) and the light transmissive sheet (32) are arranged, the connection structure being in driving connection with the drive structure, the drive structure driving the connection structure in motion.
6. The thermal imaging camera according to claim 5, wherein the light barrier (31) and the light transmissive sheet (32) are spaced apart on the connecting structure.
7. The thermal imaging camera according to claim 4, characterized in that the light barrier (31) and the light transmissive sheet (32) are connected in an integral structure, which is in driving connection with the driving structure.
8. Thermal imaging camera according to any one of claims 1 to 7, characterized in that the light barrier (31) comprises a metallic light reflecting layer facing the side on which the detector (20) is located with respect to the light exit opening.
9. The thermal imaging camera according to any of claims 1 to 7, wherein the light transmissive sheet (32) is an optical flat sheet that transmits light in a thermal imaging band.
10. The thermal imaging camera of claim 9, wherein the optically transparent sheet (32) is one of a glass sheet, a silicon sheet, a germanium sheet.
11. A monitoring device, characterized in that it comprises a thermal imaging camera according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120836057.0U CN214621488U (en) | 2021-04-22 | 2021-04-22 | Thermal imaging camera and monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120836057.0U CN214621488U (en) | 2021-04-22 | 2021-04-22 | Thermal imaging camera and monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214621488U true CN214621488U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120836057.0U Active CN214621488U (en) | 2021-04-22 | 2021-04-22 | Thermal imaging camera and monitoring device |
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| Country | Link |
|---|---|
| CN (1) | CN214621488U (en) |
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2021
- 2021-04-22 CN CN202120836057.0U patent/CN214621488U/en active Active
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Effective date of registration: 20230922 Address after: Room 201, Building A, Integrated Circuit Design Industrial Park, No. 858, Jianshe 2nd Road, Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province, 311200 Patentee after: Zhejiang Huagan Technology Co.,Ltd. Address before: No.1187 Bin'an Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG DAHUA TECHNOLOGY Co.,Ltd. |