CN202018341U - Target scene-based staring thermal imager correcting mechanism - Google Patents
Target scene-based staring thermal imager correcting mechanism Download PDFInfo
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- CN202018341U CN202018341U CN2011200641500U CN201120064150U CN202018341U CN 202018341 U CN202018341 U CN 202018341U CN 2011200641500 U CN2011200641500 U CN 2011200641500U CN 201120064150 U CN201120064150 U CN 201120064150U CN 202018341 U CN202018341 U CN 202018341U
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Abstract
The utility model discloses a target scene-based staring thermal imager correcting mechanism, which comprises a modulation mechanism, wherein the modulation mechanism comprises a modulation disc and a driving motor, wherein the driving motor drives the modulation disc to rotate; the edge of the modulation disc is provided with a plurality of holes; infrared correcting lenses are arranged at intervals in the holes; and the infrared correcting lenses of the modulation disc are aligned with the incident light beams of a thermal imager lens. Compared with the prior art, according to the target scene-based staring thermal imager correcting mechanism, the thermal imager works normally under the condition that the environmental temperature of a target region or the scene is quickly changed, and does not need to be frequently corrected; or the thermal imager is required to work stably for long time under a severe high-temperature environment in a photoelectric converter and the like, and simultaneously keeps the quality of images stable.
Description
Technical field
The utility model relates to the imager field, exactly is meant a kind of gazing type thermal imaging system aligning gear of based target scene.
Background technology
Along with the continuous development of infrared thermal imaging technique and the brute force of Military Application demand promote, the application of infrared eye in thermal imaging system developed into the gazing type focal plane device of the third generation of second generation linear array focal plane and then widespread use up till now by the multiunit detector of the first generation since the phase at the end of the seventies in last century.The infrared-sensitive of detector unit scale has also developed into several ten thousand and even hundreds of thousands even pixel up to a million by tens pixels of the first generation.Military field be widely used in photoelectric search and tracker, round the clock type gunsight, three photosynthetic one photoelectricity capstan head and hang the storehouse, guided weapon is guided first-class numerous areas.Often face harsh environment for use and condition in application of military field, be installed on aircraft, the helicopter photoelectric capstan head such as thermal imaging system thermal imaging system operate as normal and do not allow frequent correction under target area environment temperature or the rapid change condition of scene is searched for, required when measuring on ground or aerial target; Be the long-range missile of target seeker with the infrared eye or be the armament systems of taking aim at tool,, interrupt all may causing serious consequence as the infrared image of main guiding according to office because carrier or controlled warhead are in the high-speed flight motion state with thermal imaging system.
The inner not metal washer mechanism of saturating Infrared that has can cut light path that between infrared lens eyepiece and detector window, designs usually of the thermal imaging system complete machine that utilizes third generation gazing type focal plane device to be developed at present, in thermal imaging system start-up phase and use, utilize the homogeneous radiation face of washer to carry out background correction, with quality and the homogeneity of improving image for reference.Its ultimate principle is that the computation process for infrared image processing provides one group of reference data and biasing of representing the homogeneous background radiation, eliminates the interference and the multiple actions such as optical design, manufacturing deficiency of the intrinsic parasitic light of system simultaneously.Because the heterogeneity of explorer response restriction, when this temperature of washer during relatively near the environment temperature of target detector can be operated in the range of linearity more satisfactory after overcorrect, also just can get access to reasonable infrared image quality, otherwise detector can be offset to the nonlinear area work beyond the correcting area, the heterogeneity of detector itself and defective will come out, and picture quality is deterioration and decline thereupon.Because detector, treatment circuit and power supply and washer mechanism normally are contained in the airtight shell, this outside is with photoelectricity capstan head or gondola shell toward contact, also have high power laser range finder or laser irradiation device, power supply, motor, the contour power consumption components of servo circuit in the gondola, along with system and the increase of thermal imaging system working time, the temperature rise meeting of the inner subenvironment of gondola is far above environment temperature.Other influence factor is because the temperature that the flying height variation of carrier aircraft or carrier causes changes rapidly, can cause actual system's parasitic light energy value and characteristic to depart from the state at start initial stage, still use the background correction data at start initial stage just can not these interference of stray light of fine elimination.Also be that angle is unfixing between optical lens and the gondola infrared window, but certain scope of activities is arranged because stable, the vibration damping of towed bird system need be installed in thermal imaging system on the travel(l)ing rest by a kind of situation.Infrared window can enter the energy reflection of the high radiation object of capstan head inside the light path of infrared system under some angle when capstan head or gondola rotate ferret out, and it is very complicated and unpredictable to make that the interference of stray light of system becomes; Cause the correction data of collection also to depart from actual target area background radiation energy because the washer temperature that the temperature rise of thermal imaging system inside brings raises simultaneously, can make detector be operated in the inelastic region that departs from correcting range; Also have a factor to be because the rapid and long-range motion of thermal imagery carrier, the for example rapid lifting of aircraft, the rapid conversion in target search zone is (to sky, over the ground, to the sea, half a day half is extra large, half a day half), the guided missile long-distance flight is crossed over inconsistent or the like the multiple unfavorable factor combined action of correction data that target area scene that reason such as different weathers region causes and background changing cause and realistic objective scene energy and is caused continuous deterioration of infrared image and decline along with the increase thermal imaging system of working time, and this moment can only be by doing correction again, upgrade correction data and improve this intrinsic interference.Even if yet the correction washer that has raise with temperature this moment is as mentioned above gathered the background data and also is difficult to obtain more satisfactory effect.
Another aspect, this traditional correction mode also can be brought owing to the image short interruption that mechanical action is delayed time and data acquisition time causes, this does not allow to take place under a lot of application scenarios of military field yet, and the front illustrates.Experienced in actual applications operator tends to not enable so traditional correcting mode but the gondola infrared window is turned to aircraft fuselage, allow the covering cover heating as field of view or select sky or relatively uniformly earth background do " the outer correction " to obtain calibration result preferably.Yet the caused image of this bearing calibration break period can be longer, and can continue to take place image deterioration equally after object scene or flying height variation, also may also can bungle the chance of winning a battle.There is not the operating position of operator also can't carry out such " the outer correction " operation for unmanned plane and guided missile etc.
The utility model content
At above-mentioned defective, the technical matters that the utility model solves is to provide a kind of gazing type thermal imaging system aligning gear of based target scene, thermal imaging system operate as normal and needn't frequently proofreading and correct under target area environment temperature or the rapid change condition of scene; Perhaps require thermal imaging system long-time steady operation under abominable hot environments such as photoelectricity commentaries on classics inside, keep the stable of picture quality simultaneously.
In order to solve above technical matters, the gazing type thermal imaging system aligning gear of the based target scene that the utility model provides, comprise modulation mechanism, described modulation mechanism comprises chopper wheel and drive motor, described drive motor drives described chopper wheel rotation, described chopper wheel edge is provided with a plurality of holes, and described hole is arranged at intervals with infrared corrective lens, and the infrared corrective lens of described chopper wheel is aimed at the incident beam of thermal imaging system camera lens.
Preferably, described infrared corrective lens is coated with infrared anti-reflection film.
Preferably, described infrared corrective lens is infrared lens set.
Preferably, described infrared corrective lens is an Infrared Lens.
Preferably, described infrared corrective lens is a microlens array.
Preferably, described infrared corrective lens is arranged on the position of catch of thermal imaging system.
Preferably, described infrared corrective lens is arranged on the position of camera lens of thermal imaging system.
Preferably, the edge of described chopper wheel is provided with gear, and described drive motor is by the described chopper wheel rotation of described gear driven.
The gazing type thermal imaging system aligning gear of the based target scene that the utility model provides, comprise modulation mechanism, described modulation mechanism comprises chopper wheel and drive motor, described drive motor drives described chopper wheel rotation, described chopper wheel edge is provided with a plurality of holes, described hole is arranged at intervals with infrared corrective lens, and the infrared corrective lens of described chopper wheel is aimed at the incident beam of thermal imaging system camera lens.Compared with prior art, the gazing type thermal imaging system aligning gear of the based target scene that the utility model provides, thermal imaging system operate as normal and needn't frequently proofreading and correct under target area environment temperature or the rapid change condition of scene; Perhaps require thermal imaging system long-time steady operation under abominable hot environments such as photoelectricity commentaries on classics inside, keep the stable of picture quality simultaneously.
Description of drawings
Fig. 1 is the structural representation of the gazing type thermal imaging system aligning gear of based target scene in the utility model.
Wherein, respectively be denoted as among the figure:
1-chopper wheel, the infrared corrective lens of 11-, 12-gear, 13-hole.
Embodiment
For those skilled in the art can understand technical scheme provided by the utility model better, set forth below in conjunction with specific embodiment.
See also Fig. 1, this figure is the structural representation that can improve the thermal imaging system of image quality and temperature measurement accuracy in the utility model.
The gazing type thermal imaging system aligning gear of the based target scene that the utility model provides, comprise modulation mechanism, modulation mechanism comprises chopper wheel 1 and drive motor (not shown), and the edge of chopper wheel 1 is provided with gear 12, and drive motor drives chopper wheel 1 rotation by gear 12.Chopper wheel 1 edge is provided with four holes 13, hole 13 is arranged at intervals with infrared corrective lens 11, infrared corrective lens 11 is coated with infrared anti-reflection film, the infrared corrective lens 11 of chopper wheel 1 is installed on the catch position of thermal imaging system, aim at the incident beam of thermal imaging system camera lens, can carry out copped wave incident beam; The hole 13 that infrared corrective lens is not set allows light beam directly to project the focal plane of detector camera lens.Infrared corrective lens 11 is any one in Infrared Lens, infrared lens set or the microlens array.
The course of work of the gazing type thermal imaging system aligning gear of the based target scene that the utility model provides is as follows:
When infrared corrective lens moves active position, allow the imaging out of focus to greatest extent of thermal imaging system camera lens, under the not obvious prerequisite that influences incident light integral energy value, obtain the target background radiation reference value of a homogenising.Because infrared corrective lens is coated with efficient anti-reflection film, transmitance very high (single eyeglass transmitance can reach more than 95%), external environment condition emittance in the infrared corrective lens visual field still can continue to project on the thermal imaging system focal plane, the background signal that collects is the infrared energy of visual field region of interest within reality, and out of focus designs again with the emittance homogenising.Position transducer is housed near the chopper wheel can accurately measures the initial position that chopper wheel rotates, drive by a drive motor that has rotary encoder.Drive motor drives the rotation of chopper wheel precise synchronization under the strictness control of the sequential of driving circuit, guarantee chopper wheel require according to sequential alternately to allow the camera lens incident light directly by or allow the incident light after handling through out of focus enter detector window.When chopper wheel did not block light path, the infrared beam of incident was detected device and directly is captured as effective infrared picture data, and the light beam of the incident when being blocked by infrared corrective lens then is saved as calibration reference background data.Thermal imaging system was just done correct operation one time after alternation was equivalent to whenever catch a frame image data and so forth, but because correction is to do during the blanking interval that thermal imaging system effectively exposes, so can not cause the interruption of view data, had realized real-time correction.Image quality decrease and the decline that causes owing to a variety of causes simultaneously also can obtain in the time unfelt a few tens of milliseconds still repairing and refreshing the user.
Compared with prior art, the gazing type thermal imaging system aligning gear of the based target scene that the utility model provides, thermal imaging system operate as normal and needn't frequently proofreading and correct under target area environment temperature or the rapid change condition of scene; Perhaps require thermal imaging system long-time steady operation under abominable hot environments such as photoelectricity commentaries on classics inside, keep the stable of picture quality simultaneously.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (8)
1. the gazing type thermal imaging system aligning gear of a based target scene, it is characterized in that, comprise modulation mechanism, described modulation mechanism comprises chopper wheel and drive motor, described drive motor drives described chopper wheel rotation, described chopper wheel edge is provided with a plurality of holes, and described hole is arranged at intervals with infrared corrective lens, and the infrared corrective lens of described chopper wheel is aimed at the incident beam of thermal imaging system camera lens.
2. the gazing type thermal imaging system aligning gear of based target scene according to claim 1 is characterized in that described infrared corrective lens is coated with infrared anti-reflection film.
3. the gazing type thermal imaging system aligning gear of based target scene according to claim 2 is characterized in that described infrared corrective lens is infrared lens set.
4. the gazing type thermal imaging system aligning gear of based target scene according to claim 2 is characterized in that described infrared corrective lens is an Infrared Lens.
5. the gazing type thermal imaging system aligning gear of based target scene according to claim 2 is characterized in that described infrared corrective lens is a microlens array.
6. the gazing type thermal imaging system aligning gear of based target scene according to claim 1 is characterized in that, described infrared corrective lens is arranged on the position of catch of thermal imaging system.
7. the gazing type thermal imaging system aligning gear of based target scene according to claim 1 is characterized in that, described infrared corrective lens is arranged on the position of camera lens of thermal imaging system.
8. the gazing type thermal imaging system aligning gear of based target scene according to claim 1 is characterized in that the edge of described chopper wheel is provided with gear, and described drive motor is by the described chopper wheel rotation of described gear driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200641500U CN202018341U (en) | 2011-03-11 | 2011-03-11 | Target scene-based staring thermal imager correcting mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200641500U CN202018341U (en) | 2011-03-11 | 2011-03-11 | Target scene-based staring thermal imager correcting mechanism |
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| CN202018341U true CN202018341U (en) | 2011-10-26 |
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| CN2011200641500U Expired - Fee Related CN202018341U (en) | 2011-03-11 | 2011-03-11 | Target scene-based staring thermal imager correcting mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768072A (en) * | 2012-08-13 | 2012-11-07 | 电子科技大学 | Thermal infrared imager and correcting device and method thereof |
| CN103245418A (en) * | 2013-04-19 | 2013-08-14 | 昆明物理研究所 | Line-by-line push-broom modulation method for disk type chopper of non-refrigeration focal plane thermal imager |
| CN105092047A (en) * | 2014-05-22 | 2015-11-25 | 基德科技公司 | Overheat sensor system |
| CN109541711A (en) * | 2018-11-15 | 2019-03-29 | 北京遥感设备研究所 | It is a kind of based on staring infrared unmanned plane warning system and method |
| CN109959454A (en) * | 2019-04-11 | 2019-07-02 | 中国科学院云南天文台 | A kind of infrared temperature measurement apparatus, temp measuring method and application for strong illumination surface |
-
2011
- 2011-03-11 CN CN2011200641500U patent/CN202018341U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768072A (en) * | 2012-08-13 | 2012-11-07 | 电子科技大学 | Thermal infrared imager and correcting device and method thereof |
| CN103245418A (en) * | 2013-04-19 | 2013-08-14 | 昆明物理研究所 | Line-by-line push-broom modulation method for disk type chopper of non-refrigeration focal plane thermal imager |
| CN105092047A (en) * | 2014-05-22 | 2015-11-25 | 基德科技公司 | Overheat sensor system |
| CN109541711A (en) * | 2018-11-15 | 2019-03-29 | 北京遥感设备研究所 | It is a kind of based on staring infrared unmanned plane warning system and method |
| CN109959454A (en) * | 2019-04-11 | 2019-07-02 | 中国科学院云南天文台 | A kind of infrared temperature measurement apparatus, temp measuring method and application for strong illumination surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: GUANGZHOU YISITE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Assignor: Zhao Jinhao Contract record no.: 2011440000730 Denomination of utility model: Target scene-based staring thermal imager correcting mechanism Granted publication date: 20111026 License type: Exclusive License Record date: 20110714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20170311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |