CN109246367B - Infrared radiation scene conversion system and method - Google Patents
Infrared radiation scene conversion system and method Download PDFInfo
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- CN109246367B CN109246367B CN201810775477.5A CN201810775477A CN109246367B CN 109246367 B CN109246367 B CN 109246367B CN 201810775477 A CN201810775477 A CN 201810775477A CN 109246367 B CN109246367 B CN 109246367B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
Abstract
The invention discloses an infrared radiation scene conversion system and method. The system comprises: blackbody radiation source, energy modulation micromirror array driver, optical beam splitter, imaging micromirror array a, imaging micromirror array driver A, A band filter, imaging micromirror array B, imaging micromirror array driver B, B band filter, video decoding circuit, and optical beam combiner. A blackbody radiation source provides infrared radiation energy; the energy modulation micro-mirror array modulates infrared radiation energy under the driving action of the energy modulation micro-mirror array driver, and the modulated infrared energy is divided into a transmission light path and a reflection light path through an optical beam splitter and respectively enters an imaging micro-mirror array A and an imaging micro-mirror array B for modulation; the modulated output energy is respectively screened and output by an A wave band filter and a B wave band filter, and is fused and output by an optical beam combiner to obtain the required short-integration-time high-gray-level-wave-band infrared radiation scene.
Description
Technical Field
The invention relates to the technical field of infrared imaging. And more particularly to a short integration time high grayscale waveband infrared radiation scene conversion system and method.
Background
The infrared image acquisition technology is widely applied to the fields of scientific research, security and other national production and living, the corresponding infrared imaging semi-physical simulation method is improved day by day, and the dynamic range, the energy resolution and the sub-band simulation capability of the infrared imaging scene simulator are very important. The infrared imaging scene target simulator needs to meet the capability of stably outputting high-gray-level infrared images within short integration time as far as possible, and needs to have the capability of modulating sub-band infrared images and meet the test evaluation requirements of the infrared image collector to be tested. At present, a dynamic infrared imaging scene simulator based on a micro-electromechanical system digital micromirror array (DMD) technology obtains an integral gray level image in a mode of directly modulating a black body radiation source by a single-stage device, and although a high gray level infrared image above 256 levels can be obtained within a long integral time, the requirements of short integral time and high gray level waveband infrared image simulation required by high frame frequency infrared image acquisition technology test and evaluation cannot be met.
A two-stage energy modulation and sub-band imaging modulation combined infrared radiation scene conversion method needs to be adopted in the system, and the requirement of short-integration-time high-gray-level sub-band infrared scene simulation is met.
Disclosure of Invention
The invention aims to provide an infrared radiation scene conversion system and method, which solve the problem that a single-stage single-device direct modulation black body radiation source of a dynamic infrared scene generation device based on a digital micromirror technology cannot meet the requirements of a detected infrared image collector on high frame frequency, energy and wave band resolution, and ensure the accuracy and reliability of a semi-physical simulation system.
In order to achieve the purpose, the invention adopts the following technical scheme:
one aspect of the present invention provides an infrared radiation scene conversion system, including: the device comprises a blackbody radiation source, an energy modulation micromirror array driver, an optical beam splitter, an imaging micromirror array A, an imaging micromirror array driver A, A wavelength band filter, an imaging micromirror array B, an imaging micromirror array driver B, B wavelength band filter, a video decoding circuit and an optical beam combiner;
a blackbody radiation source provides infrared radiation energy; the energy modulation micro-mirror array modulates infrared radiation energy under the driving action of the energy modulation micro-mirror array driver, and the modulated infrared energy is divided into a transmission light path and a reflection light path through an optical beam splitter and respectively enters an imaging micro-mirror array A and an imaging micro-mirror array B for modulation; the modulated output energy is respectively screened and output by an A wave band filter and a B wave band filter, and is fused and output by an optical beam combiner to obtain a required short-integration-time high-gray-level wave band infrared radiation scene;
the video decoding circuit converts video signals after filtering, denoising and decoding into signals which can be received by an imaging micromirror array driver A and an imaging micromirror array driver B, and the imaging micromirror array driver A and the imaging micromirror array driver B respectively convert the signals into driving signals of the imaging micromirror array A and the imaging micromirror array B.
Preferably, the system further comprises a condensing optical system a and a condensing optical system B;
the light beam passes through the optical beam splitter and is divided into a transmission light path and a reflection light path, and the transmission light path and the reflection light path are converged by a condensing optical system A and a condensing optical system B and then enter an imaging micromirror array A and an imaging micromirror array B.
Preferably, the energy modulating micromirror array employs micromirror arrays at the same rate as the imaging micromirror array a and the imaging micromirror array B.
Preferably, the energy-modulating micromirror array driver employs the same drivers as the imaging micromirror array driver a and the imaging micromirror array driver B.
Another aspect of the present invention provides a method for converting an infrared radiation scene, including the steps of:
the infrared radiation energy is modulated by an energy modulation micro-mirror array, and is split into a transmission light path and a reflection light path after modulation, and the transmission light path and the reflection light path respectively enter an imaging micro-mirror array for modulation; the modulated energy is respectively screened and output by the optical filter, and finally beam combination output is carried out to obtain the required infrared radiation scene with short integration time and high gray level fraction wave band.
Preferably, the transmission light path and the reflection light path are converged by the condensing optical system and then enter the imaging micromirror array for modulation.
The invention has the following beneficial effects:
the infrared radiation scene conversion system provided by the invention realizes the output of a high gray level fraction waveband infrared radiation scene in a short integration time, solves the problem that a single-stage single-device directly-modulated black body radiation source of a dynamic infrared scene generation device based on a digital micromirror technology cannot meet the requirements of a detected infrared image collector on high frame frequency, energy and waveband resolution, and ensures the accuracy and reliability of a semi-physical simulation system.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an infrared radiation scene conversion system according to the present invention.
Description of reference numerals: the device comprises a 1-blackbody radiation source, a 2-energy modulation micromirror array, a 3-energy modulation micromirror array driver, a 4-optical beam splitter, a 5-imaging micromirror array A, a 6-imaging micromirror array driver A, a 7-A waveband optical filter, an 8-imaging micromirror array B, a 9-imaging micromirror array driver B, a 10-B waveband optical filter, an 11-video decoding circuit and a 12-optical beam combiner.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The present invention will be described by taking the application of two bands, i.e., a band a and a band B as an example.
As shown in fig. 1, the present embodiment provides an infrared radiation scene conversion system, which includes: the device comprises a blackbody radiation source 1, an energy modulation micromirror array 2, an energy modulation micromirror array driver 3, an optical beam splitter 4, an imaging micromirror array A5, an imaging micromirror array driver A6, an A-band filter 7, an imaging micromirror array B8, an imaging micromirror array driver B9, a B-band filter 10, a video decoding circuit 11 and an optical beam combiner 12.
The blackbody radiation source 1 provides infrared radiation energy; the energy modulation micro-mirror array 2 is connected with an energy modulation micro-mirror array driver 3 through a circuit board, and under the driving action, infrared radiation energy from the black body radiation source 1 is modulated; the modulated energy is reflected to the optical beam splitter 4 by the energy modulation micro mirror array 2, and is divided into two paths of transmission and reflection, which are sent to the imaging micro mirror array A5 and the imaging micro mirror array B8 respectively. The imaging micro-mirror array A5 is connected with the imaging micro-mirror array driver A6 through a circuit board, the imaging micro-mirror array B8 is connected with the imaging micro-mirror array driver B9 through the circuit board, the imaging micro-mirror array driver A6 and the imaging micro-mirror array driver B9 are respectively connected with the video decoding circuit 11, the imaging micro-mirror array A5 and the imaging micro-mirror array B8 respectively modulate infrared radiation energy from the energy modulation micro-mirror array under the driving action, the output energy is respectively screened and output through the A wave band optical filter 7 and the B wave band optical filter 10, and is fused and output through the optical beam combiner 12, and the infrared radiation scene of the required sub-wave band modulation is obtained.
The video decoding circuit 11 converts the video signal after filtering, denoising and decoding into a signal that can be received by the imaging micromirror array driver A8 and the imaging micromirror array driver B9.
Further, the system further includes a condensing optical system a and a condensing optical system B (not shown in fig. 1); the light beam passes through the optical beam splitter and is divided into a transmission light path and a reflection light path, and the transmission light path and the reflection light path are converged by a condensing optical system A and a condensing optical system B and then enter an imaging micromirror array A and an imaging micromirror array B.
Another aspect of this embodiment provides a method for converting an infrared radiation scene, where the method includes:
the infrared radiation energy is modulated by an energy modulation micro-mirror array, and is split into a transmission light path and a reflection light path after modulation, and the transmission light path and the reflection light path respectively enter an imaging micro-mirror array for modulation; the modulated energy is respectively screened and output by the optical filter, and finally beam combination output is carried out to obtain the required infrared radiation scene with short integration time and high gray level fraction wave band.
The method comprises the following specific operation processes:
first step, completing integration of infrared radiation scene conversion system
The infrared radiation scene conversion system includes: the device comprises a blackbody radiation source 1, an energy modulation micromirror array 2, an energy modulation micromirror array driver 3, an optical beam splitter 4, an imaging micromirror array A5, an imaging micromirror array driver A6, an A-band filter 7, an imaging micromirror array B8, an imaging micromirror array driver B9, a B-band filter 10, a video decoding circuit 11 and an optical beam combiner 12.
The blackbody radiation source 1 provides infrared radiation energy; the energy modulation micro-mirror array 2 is connected with an energy modulation micro-mirror array driver 3 through a circuit board, and under the driving action, infrared radiation energy from the black body radiation source 1 is modulated; the modulated energy is reflected to the optical beam splitter 4 by the energy modulation micro mirror array 2, and is divided into two paths of transmission and reflection, which are sent to the imaging micro mirror array A5 and the imaging micro mirror array B8 respectively. The imaging micro-mirror array A5 is connected with the imaging micro-mirror array driver A6 through a circuit board, the imaging micro-mirror array B8 is connected with the imaging micro-mirror array driver B9 through the circuit board, the imaging micro-mirror array driver A6 and the imaging micro-mirror array driver B9 are respectively connected with the video decoding circuit 11, the imaging micro-mirror array A5 and the imaging micro-mirror array B8 respectively modulate infrared radiation energy from the energy modulation micro-mirror array under the driving action, the output energy is respectively screened and output through the A wave band optical filter 7 and the B wave band optical filter 10, and is fused and output through the optical beam combiner 12, and the infrared radiation scene of the required sub-wave band modulation is obtained.
The second step completes the setting of the energy modulation micro-mirror array 2
The energy modulation micro-mirror array 2 adopts the micro-mirror array with the same speed as the imaging micro-mirror array A5 and the imaging micro-mirror array B8, thereby ensuring the high-speed modulation of energy in short integration time and synchronizing with the imaging micro-mirror array when modulating the energy, and converting the modulation signal into a high-gray level infrared scene. The energy modulation micromirror array driver 3 uses the same drivers as the imaging micromirror array driver a6 and the imaging micromirror array driver B9, thereby ensuring high-speed modulation of energy within a short integration time and synchronizing with the imaging micromirror array while modulating energy, converting the modulated signal into a high-gray-level infrared scene.
The modulation of energy can be illustrated by the spreading code of 8421. The combination of numbers from 1 to any number can be obtained by the extension coding of 8421, and if we need to combine the numbers from 1 to 255, only 8 groups of numbers 1, 2, 4, 8, 16, 32, 64, 128 are needed. Since infrared image collector imaging is a process of acquiring energy by time accumulation, the time for acquiring energy can be divided into 8 equal time intervals, and the 8 groups of numbers 1, 2, 4, 8, 16, 32, 64 and 128 are taken as the maximum energy acquired in each time interval, so that the energy from 1 to 255 level can be acquired only by outputting energy in the corresponding time interval according to 8421 expansion encoding table. This goal is achieved in two processes: firstly, the output energy and the non-output energy in each time interval can be controlled, the imaging micro-mirror array A5 and the imaging micro-mirror array B8 are used for realizing the control, each small mirror on the imaging micro-mirror array A5 and the imaging micro-mirror array B8 can independently control the overturning, and when the small mirrors are overturned in the forward direction, the energy is output, and when the small mirrors are overturned in the reverse direction, the energy is not output. Secondly, energy of levels 1, 2, 4, 8, 16, 32, 64 and 128 is respectively supplied to energy output devices (i.e. the energy modulation micro-mirror arrays 2) in 8 time periods, the process is realized by the energy modulation micro-mirror arrays 2, the energy output in 8 time periods can be controlled to be in the levels 1, 2, 4, 8, 16, 32, 64 and 128 by controlling the number of the micro-mirrors on the energy modulation micro-mirror arrays 2 which are turned over in the forward direction in 8 time periods, the output energy is converged by a light-condensing optical system and then is irradiated on the imaging micro-mirror arrays A5 and B8, so that the imaging micro-mirror arrays A5 and B8 respectively obtain the energy of the levels 1, 2, 4, 8, 16, 32, 64 and 128 in 8 time periods.
The third step is to complete the arrangement of the imaging micromirror array A and the imaging micromirror array B
The video decoding circuit 11 is used for receiving the video signal output by the pattern workstation, filtering, removing noise, decoding and converting the video signal into a signal which can be received by the imaging micro-mirror array driver. The imaging micro-mirror array driver a6 and the imaging micro-mirror array driver B9 are used for respectively changing the video signal generated by the video decoding circuit 11 into the driving signals of the imaging micro-mirror array a5 and the imaging micro-mirror array B8, so that the imaging micro-mirror array generates infrared thermal images with different wave bands which can be respectively modulated.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (5)
1. An infrared radiation scene conversion system, comprising: the device comprises a blackbody radiation source, an energy modulation micromirror array driver, an optical beam splitter, an imaging micromirror array A, an imaging micromirror array driver A, A wavelength band filter, an imaging micromirror array B, an imaging micromirror array driver B, B wavelength band filter, a video decoding circuit and an optical beam combiner;
a blackbody radiation source provides infrared radiation energy; the energy modulation micro-mirror array adopts a micro-mirror array with the same speed as that of the imaging micro-mirror array A and the imaging micro-mirror array B, infrared radiation energy is modulated under the driving action of an energy modulation micro-mirror array driver, and the modulated infrared energy is divided into a transmission light path and a reflection light path through an optical beam splitter and respectively enters the imaging micro-mirror array A and the imaging micro-mirror array B for modulation; the modulated output energy is respectively screened and output by an A wave band filter and a B wave band filter, and is fused and output by an optical beam combiner to obtain a required short-integration-time high-gray-level wave band infrared radiation scene;
the video decoding circuit converts video signals after filtering, denoising and decoding into signals which can be received by an imaging micromirror array driver A and an imaging micromirror array driver B, and the imaging micromirror array driver A and the imaging micromirror array driver B respectively convert the signals into driving signals of the imaging micromirror array A and the imaging micromirror array B.
2. The infrared radiation scene conversion system of claim 1, further comprising a condenser optical system a and a condenser optical system B;
the light beam passes through the optical beam splitter and is divided into a transmission light path and a reflection light path, and the transmission light path and the reflection light path are converged by a condensing optical system A and a condensing optical system B and then enter an imaging micromirror array A and an imaging micromirror array B.
3. The infrared radiation scene conversion system of claim 2, wherein the energy modulating micromirror array driver employs the same drivers as imaging micromirror array driver a and imaging micromirror array driver B.
4. An infrared radiation scene conversion method is characterized by comprising the following steps:
the infrared radiation energy is modulated by the energy modulation micro-mirror array, and is split into a transmission light path and a reflection light path after modulation, and the transmission light path and the reflection light path respectively enter the imaging micro-mirror array A and the imaging micro-mirror array B for modulation; the modulated energy is respectively screened and output through an A-section optical filter and a B-section optical filter, and finally beam combination output is carried out to obtain a required short-integration-time high-gray-scale-level-band infrared radiation scene, wherein the energy modulation micro-mirror array adopts a micro-mirror array with the same speed as that of the imaging micro-mirror array A and that of the imaging micro-mirror array B.
5. The method of claim 4, wherein the transmission light path and the reflection light path are converged by a condensing optical system and then modulated by an imaging micromirror array.
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| CN201717961U (en) * | 2009-12-01 | 2011-01-19 | 哈尔滨新光光电科技有限公司 | Double DMD display image superposed on object plane infrared scene generating system |
| CN107966872A (en) * | 2017-11-13 | 2018-04-27 | 长春理工大学 | Infrared double-waveband light engine based on double DMD |
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| JPS5619418A (en) * | 1979-07-26 | 1981-02-24 | Mitsubishi Electric Corp | Infrared-ray image pickup unit |
| CN101692696B (en) * | 2009-10-12 | 2012-01-04 | 哈尔滨工业大学 | Digital micromirror device (DMD) based method and digital micromirror device (DMD) based system for generating broadband dynamic optical scene |
| CN101799330B (en) * | 2009-11-13 | 2011-08-31 | 哈尔滨工业大学 | Method and system for realizing high-gray level infrared scene generation within short integration time |
| CN105588645B (en) * | 2014-10-20 | 2019-06-18 | 哈尔滨新光光电科技有限公司 | A kind of high contrast Infrared scene generation method of four sets of DMD stacking images |
| CN107167998B (en) * | 2017-06-29 | 2020-04-07 | 中国人民解放军装备学院 | Space dual-waveband composite dynamic scene projection simulation system |
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| CN201717961U (en) * | 2009-12-01 | 2011-01-19 | 哈尔滨新光光电科技有限公司 | Double DMD display image superposed on object plane infrared scene generating system |
| CN107966872A (en) * | 2017-11-13 | 2018-04-27 | 长春理工大学 | Infrared double-waveband light engine based on double DMD |
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