CN114088206B - Thermal imager view field repositioning mechanism and use method thereof - Google Patents
Thermal imager view field repositioning mechanism and use method thereof Download PDFInfo
- Publication number
- CN114088206B CN114088206B CN202111242640.XA CN202111242640A CN114088206B CN 114088206 B CN114088206 B CN 114088206B CN 202111242640 A CN202111242640 A CN 202111242640A CN 114088206 B CN114088206 B CN 114088206B
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- thermal imager
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000000007 visual effect Effects 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims description 21
- 230000003287 optical effect Effects 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 238000001931 thermography Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/0205—Mechanical elements; Supports for optical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Lens Barrels (AREA)
Abstract
The invention provides a thermal imager view field repositioning mechanism and a use method thereof, wherein the view field repositioning mechanism comprises: base plate, direction subassembly, lens subassembly and locating component, direction subassembly locates the base plate, and the lens subassembly is located the base plate through direction subassembly movably, and the lens subassembly is equipped with the locating pin, and locating component cooperates with the locating pin to with lens subassembly adjustment to predetermine the position. The visual field repositioning mechanism provided by the invention has the advantages of simple structure, high reliability and strong universality, can complete the work of repeated visual field positioning under the condition of not disassembling the thermal imager component, greatly reduces the workload, simplifies the repeated visual field positioning process of the thermal imager, and improves the positioning precision.
Description
Technical Field
The invention relates to the technical field of thermal infrared imagers, in particular to a thermal imager view field repositioning mechanism and a use method thereof.
Background
The thermal infrared imager generally adopts a multi-view field structure design, and the requirements of the thermal infrared imager under different use conditions, such as large-range target searching, target tracking identification and the like, are realized through switching between view fields. In the thermal imaging system with the multi-view field structure, the thermal imaging system with the continuous zoom structure occupies important positions in various fields with the advantages of continuous focal length and difficulty in losing targets.
According to the working principle of the continuous zooming infrared thermal imager, the zoom lens and the compensation lens need to move repeatedly in the axial direction according to a given optical curve, and meanwhile, in order to meet the adjustment allowance of the thermal imager at high and low temperatures, the field of view position of the thermal imager is not provided with a mechanical positioning design, so that the field of view needs to be repositioned after the assembly and disassembly components or the program are updated.
Disclosure of Invention
The invention provides a thermal imager field of view repositioning mechanism and a use method thereof, and aims to solve the technical problem of improving convenience and accuracy of thermal infrared imager field of view repositioning.
According to an embodiment of the invention, a thermal imager field of view repositioning mechanism includes:
a substrate;
the guide assembly is arranged on the substrate;
the lens component is movably arranged on the substrate through the guide component and is provided with a positioning pin;
and the positioning assembly is matched with the positioning pin so as to adjust the lens assembly to a preset position.
According to some embodiments of the invention, the positioning assembly comprises:
the visual field positioning bracket is arranged on the substrate, the position of the visual field positioning bracket relative to the substrate is adjustable, and the visual field positioning bracket is provided with a positioning hole;
the bushing is matched with the locating pin at one end, facing the locating pin, of the bushing, and the lens assembly is adjusted to a preset position by penetrating the locating hole through the bushing and being matched with the locating pin.
In some embodiments of the invention, the bushing has an adapter bore extending therethrough in an axial direction, an inner diameter of the adapter bore being adapted to the locating pin.
According to some embodiments of the invention, the base plate is provided with an adjusting hole, and the field positioning bracket is in position adjustment and fixation with the adjusting hole through a fixing screw.
In some embodiments of the invention, the guide assembly comprises:
the guide rail is arranged on the base plate;
the sliding piece is provided with a sliding groove matched with the guide rail, and the lens component is fixedly connected with the sliding piece.
According to some embodiments of the invention, the field repositioning mechanism further comprises:
the driving motor is arranged on the base plate, connected with the lens component and used for driving the lens component to move on the base plate.
In some embodiments of the invention, the drive motor is a stepper motor that is secured to the base plate by a motor mount.
According to some embodiments of the invention, the lens assembly is a variable power mirror assembly or a compensation mirror assembly.
According to the thermal imager field of view zero positioning method provided by the embodiment of the invention, the thermal imager field of view repositioning mechanism is adopted to perform field of view zero positioning, and the method comprises the following steps:
a100, driving the lens assembly to an optical design zero point through a driving motor;
a200, adjusting the position of the view field positioning bracket until the bushing can pass through the positioning hole of the view field positioning bracket to be matched with the positioning pin;
a300, fixing the view field positioning bracket, and taking down the bushing, wherein the position of the view field positioning bracket is the view field zero position.
According to the thermal imager field of view repositioning method provided by the embodiment of the invention, the thermal imager field of view repositioning mechanism is adopted to reposition the field of view, and the method comprises the following steps:
b100, driving the lens component to the vicinity of an optical design zero point through a driving motor;
b200, fine-tuning the lens assembly until the bushing can pass through the positioning hole of the visual field positioning bracket to be matched with the positioning pin;
and B300, removing the bushing to finish the repositioning of the field of view of the thermal imager.
The thermal imager view field repositioning mechanism and the use method thereof provided by the invention have at least the following advantages:
the visual field repositioning mechanism has the advantages of simple structure, high reliability and strong universality, can complete the work of repeated visual field positioning under the condition of not disassembling the thermal imager component, greatly reduces the workload, simplifies the repeated visual field positioning process of the thermal imager, and improves the positioning precision.
Drawings
FIG. 1 is a schematic diagram of a thermal imager field of view repositioning mechanism according to an embodiment of the invention;
FIG. 2 is a flow chart of a method for zero point positioning using a thermal imager field of view repositioning mechanism in accordance with an embodiment of the invention;
fig. 3 is a flow chart of a method for field repositioning using a thermal imager field repositioning mechanism according to an embodiment of the invention.
The field of view repositioning mechanism 100,
the substrate 10 is provided with a plurality of spacers,
the guide assembly 20, the guide rail 210, the slider 220,
the lens assembly 30, the alignment pin 310,
positioning assembly 40, field positioning bracket 410, positioning hole 411, bushing 420, mating hole 421,
the motor 50 is driven, and the motor bracket 60.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description of the present invention is given with reference to the accompanying drawings and preferred embodiments.
The steps of the method flow described in the specification and the flow chart shown in the drawings of the specification are not necessarily strictly executed according to step numbers, and the execution order of the steps of the method may be changed. Moreover, some steps may be omitted, multiple steps may be combined into one step to be performed, and/or one step may be decomposed into multiple steps to be performed.
As shown in fig. 1, a thermal imager field of view repositioning mechanism 100 according to an embodiment of the invention includes: a base plate 10, a guide assembly 20, a lens assembly 30, and a positioning assembly 40.
The guiding assembly 20 is disposed on the substrate 10, and the lens assembly 30 is movably disposed on the substrate 10 through the guiding assembly 20. Thus, the position of the lens assembly 30 can be conveniently adjusted according to the operation requirement.
The lens assembly 30 is provided with a positioning pin 310, and the positioning assembly 40 cooperates with the positioning pin 310 to adjust the lens assembly 30 to a predetermined position.
It should be noted that, by matching the positioning assembly 40 with the positioning pin 310, it can be determined whether the lens assembly 30 is adjusted to a predetermined position (e.g. an optical null position).
According to some embodiments of the invention, as shown in fig. 1, the positioning assembly 40 includes: a field positioning bracket 410 and a bushing 420.
The field positioning bracket 410 is disposed on the substrate 10, and a position of the field positioning bracket 410 relative to the substrate 10 is adjustable. It should be noted that, when the lens assembly 30 is adjusted to the optical zero position, the field positioning assembly 40 may be correspondingly adjusted to the corresponding position, and the cooperation between the bushing 420 and the positioning pin 310 determines whether the field positioning assembly 40 and the lens assembly 30 are at the corresponding position.
The field positioning bracket 410 is provided with a positioning hole 411, one end of the bushing 420 facing the positioning pin 310 is matched with the positioning pin 310, and the bushing 420 penetrates through the positioning hole 411 to be matched with the positioning pin 310, so that the lens assembly 30 is adjusted to a preset position.
In some embodiments of the present invention, as shown in fig. 1, the bushing 420 has an adapting hole 421 penetrating in an axial direction, and an inner diameter of the adapting hole 421 is adapted to the positioning pin 310. It should be noted that, the difference between the inner diameter of the fitting hole 421 and the outer diameter of the positioning pin 310 may be set according to the allowable error range. When the bushing 420 is sleeved to the positioning pin 310 through the positioning hole 411 of the field positioning pin 310, it indicates that the lens assembly 30 and the field positioning assembly 40 are in corresponding positions.
According to some embodiments of the present invention, the base plate 10 is provided with adjustment holes (not shown), and the field positioning bracket 410 is position-adjusted and fixed with the adjustment holes by fixing screws. For example, the adjusting hole may be a slot-shaped hole having a certain length along the axial direction of the base plate 10, and when the fixing screw is loosened, the field positioning bracket 410 may move along the axial direction of the base plate 10, and after moving to a corresponding position, the fixing screw is tightened to fix the field positioning assembly 40.
In some embodiments of the present invention, as shown in fig. 1, the guide assembly 20 includes: a guide rail 210 and a slider 220. The guide rail 210 is disposed on the base plate 10, the sliding member 220 has a sliding slot adapted to the guide rail 210, and the lens assembly 30 is fixedly connected to the sliding member 220. Thus, the lens assembly 30 can be adjusted in position along the axial direction of the base plate 10 by the cooperation between the slider 220 and the guide rail 210.
According to some embodiments of the invention, as shown in fig. 1, the field of view repositioning mechanism 100 further comprises: the driving motor 50 is disposed on the substrate 10, and is connected to the lens assembly 30 for driving the lens assembly 30 to move on the substrate 10. Thus, the lens assembly 30 can be driven to move by the driving motor 50, and automatic adjustment of the position of the lens assembly 30 is realized.
In some embodiments of the present invention, the driving motor 50 is a stepping motor, which is fixed to the substrate 10 by a motor bracket 60.
According to some embodiments of the invention, the lens assembly 30 is a variable power mirror assembly or a compensation mirror assembly. That is, the lens assembly 30 may be a variable power lens assembly; the lens assembly 30 may also be a compensation lens assembly.
As shown in fig. 2, according to an embodiment of the present invention, a thermal imager field of view repositioning mechanism 100 is used to perform field of view zero positioning, where the method includes:
a100, driving the lens assembly to an optical design zero point through a driving motor;
a200, adjusting the position of the view field positioning bracket until the bushing can pass through a positioning hole of the view field positioning bracket to be matched with the positioning pin;
a300, fixing the visual field positioning bracket, taking down the bushing, and setting the visual field positioning bracket at the position and in the zero position of the visual field.
As shown in fig. 3, according to the thermal imager field of view repositioning method according to the embodiment of the present invention, the method adopts the thermal imager field of view repositioning mechanism 100 as described above to perform field of view repositioning, and the method includes:
b100, driving the lens component to the vicinity of an optical design zero point through a driving motor;
b200, fine tuning the lens component, wherein the bushing can pass through a positioning hole of the view field positioning bracket to be matched with the positioning pin;
and B300, removing the bushing to finish the repositioning of the field of view of the thermal imager.
In summary, the thermal imager field of view repositioning mechanism 100 and the method for using the same according to the present invention have at least the following advantages:
the visual field repositioning mechanism 100 has the advantages of simple structure, high reliability and strong universality, can complete the work of repeated visual field positioning under the condition of not disassembling the thermal imager component, greatly reduces the workload, simplifies the repeated visual field positioning process of the thermal imager, and improves the positioning precision.
The thermal imager field of view repositioning mechanism 100 and method of use according to the present invention are described in detail below with reference to the accompanying drawings in one specific embodiment. It is to be understood that the following description is exemplary only and is not to be taken as limiting the invention in any way.
As shown in fig. 1, the thermal imager field of view repositioning mechanism 100 includes: base plate 10, linear guide 210, stepper motor, motor mount 60, variable magnification/compensation mirror assembly (i.e., lens assembly 30), field of view positioning mount 410, positioning pins 310, and bushing 420.
In assembling the thermal imager field of view positioning mechanism, the linear guide 210 is mounted on the base plate 10 and fastened with screws. The variable magnification/compensation mirror assembly is mounted to the linear guide 210 slider and screwed. The stepping motor is mounted to the motor bracket 60 and then mounted to the base plate 10, and fastened with screws. The locating pin 310 is installed into the variable magnification/compensation mirror assembly. The field positioning bracket 410 is mounted to the base plate 10 and fastened with screws.
The thermal imager field of view repositioning mechanism 100 is used as follows:
the stepper motor is driven to move the zoom/compensator assembly to the optical design zero position, at which time the bushing 420 is installed into the field locating bracket 410, the screws that fix the field locating bracket 410 are loosened, the field locating bracket 410 is fine-tuned, the bushing 420 is inserted into the locating pin 310, the field locating bracket 410 is fixed, and the bushing 420 is removed. When the zoom/compensation mirror assembly needs to be repositioned, only the motor 50 is required to drive the zoom/compensation mirror assembly to approach the zero position, the bushing 420 is installed into the view field positioning bracket 410, and the position of the zoom/compensation mirror assembly is finely adjusted, so that the bushing 420 is smoothly inserted into the positioning pin 310, and the view field repeated positioning is completed.
The detailed assembly and method of use of the thermal imager field of view repositioning mechanism 100 is as follows:
s1, mounting a linear guide rail 210 on a substrate 10, and fixing firmly;
s2, installing the zoom/compensation mirror assembly on the linear guide rail 210, and fixing firmly;
s3, mounting the stepping motor into the motor bracket 60, and then integrally mounting the stepping motor onto the substrate 10, wherein the stepping motor is firmly fixed;
s4, mounting the positioning pin 310 on the zoom/compensation mirror assembly;
s5, mounting the view field positioning bracket 410 on the substrate 10, and fixing firmly;
s6, driving a stepping motor to move the zoom/compensation lens assembly to an optical design zero position, at the moment, loading the bushing 420 into the view field positioning bracket 410, loosening a screw for fixing the view field positioning bracket 410, finely adjusting the view field positioning bracket 410, enabling the bushing 420 to be inserted into the positioning pin 310, fixing the view field positioning bracket 410, and removing the bushing 420;
s7, when the zoom/compensation mirror assembly needs to be repositioned, only the stepping motor is driven to enable the zoom/compensation mirror assembly to approach the zero position, the bushing 420 is installed into the view field positioning bracket 410, the position of the zoom/compensation mirror assembly is finely adjusted, the bushing 420 is smoothly inserted into the positioning pin 310, and the view field repeated positioning is completed.
The thermal imager field of view repositioning mechanism 100 and the method of use thereof of the present invention have at least the following advantages:
the visual field repositioning mechanism 100 has the advantages of simple structure, high reliability and strong universality, can complete the work of repeated visual field positioning under the condition of not disassembling the thermal imager component, greatly reduces the workload, simplifies the repeated visual field positioning process of the thermal imager, and improves the positioning precision.
While the invention has been described in connection with specific embodiments thereof, it is to be understood that these drawings are included in the spirit and scope of the invention, it is not to be limited thereto.
Claims (9)
1. A thermal imager field of view repositioning mechanism, comprising:
a substrate;
the guide assembly is arranged on the substrate;
the lens component is movably arranged on the substrate through the guide component and is provided with a positioning pin;
the positioning assembly is matched with the positioning pin so as to adjust the lens assembly to a preset position;
the positioning assembly includes:
the visual field positioning bracket is arranged on the substrate, the position of the visual field positioning bracket relative to the substrate is adjustable, and the visual field positioning bracket is provided with a positioning hole;
the bushing is matched with the locating pin at one end, facing the locating pin, of the bushing, and the lens assembly is adjusted to a preset position by penetrating the locating hole through the bushing and being matched with the locating pin.
2. The thermal imager field repositioning mechanism of claim 1, wherein the bushing has an axially extending mating bore having an inner diameter that mates with the locating pin.
3. The thermal imager field repositioning mechanism of claim 1, wherein the base plate is provided with adjustment apertures, and the field positioning bracket is position-adjusted and fixed with the adjustment apertures by a set screw.
4. The thermal imager field repositioning mechanism of claim 1, wherein the guide assembly comprises:
the guide rail is arranged on the base plate;
the sliding piece is provided with a sliding groove matched with the guide rail, and the lens component is fixedly connected with the sliding piece.
5. The thermal imager field repositioning mechanism of claim 1, further comprising:
the driving motor is arranged on the base plate, connected with the lens component and used for driving the lens component to move on the base plate.
6. The thermal imager field repositioning mechanism of claim 5, wherein the drive motor is a stepper motor that is secured to the base plate by a motor mount.
7. The thermal imager field repositioning mechanism of any one of claims 1-6, wherein the lens assembly is a variable magnification lens assembly or a compensation lens assembly.
8. A thermal imager field of view zero positioning method employing a thermal imager field of view repositioning mechanism according to any of claims 1-7, the method comprising:
driving the lens assembly to an optical design zero point by a driving motor;
adjusting the position of the view field positioning bracket until the bushing can pass through the positioning hole of the view field positioning bracket to be matched with the positioning pin;
and fixing the visual field positioning bracket, and taking down the bushing, wherein the position of the visual field positioning bracket is the zero position of the visual field.
9. A thermal imager field of view repositioning method using the thermal imager field of view repositioning mechanism of any of claims 1-7, the method comprising:
driving the lens assembly to the vicinity of an optical design zero point by a driving motor;
fine tuning the lens assembly until the bushing can pass through the positioning hole of the view field positioning bracket to be matched with the positioning pin;
and (5) removing the bushing to finish the repositioning of the field of view of the thermal imager.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111242640.XA CN114088206B (en) | 2021-10-25 | 2021-10-25 | Thermal imager view field repositioning mechanism and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111242640.XA CN114088206B (en) | 2021-10-25 | 2021-10-25 | Thermal imager view field repositioning mechanism and use method thereof |
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| CN114088206A CN114088206A (en) | 2022-02-25 |
| CN114088206B true CN114088206B (en) | 2023-10-24 |
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| CN114088206A (en) | 2022-02-25 |
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