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CN103542940B - A kind of infrared imaging detection chip measured based on wave vector - Google Patents

A kind of infrared imaging detection chip measured based on wave vector Download PDF

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CN103542940B
CN103542940B CN201310443095.XA CN201310443095A CN103542940B CN 103542940 B CN103542940 B CN 103542940B CN 201310443095 A CN201310443095 A CN 201310443095A CN 103542940 B CN103542940 B CN 103542940B
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infrared
area array
preprocessing module
infrared detector
uncooled
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CN103542940A (en
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张新宇
罗俊
康胜武
佟庆
梁巢兵
王文
桑红石
谢长生
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Huazhong University of Science and Technology
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Abstract

本发明公开了一种基于波矢测量的红外成像探测芯片,包括面阵红外折射微透镜、面阵非制冷红外探测器和驱控预处理模块;其中,面阵非制冷红外探测器位于所述面阵红外折射微透镜的焦面处,被划分成多个阵列分布的子面阵非制冷红外探测器,每个子面阵非制冷红外探测器包括数量和排布方式相同的多个阵列分布的光敏元;面阵红外折射微透镜包括多个阵列分布的单元红外折射微透镜,每单元红外折射微透镜与一个子面阵非制冷红外探测器对应。本发明的红外成像探测芯片可测量的红外波矢方向的变动范围大,测量精度高,结构紧凑,环境适应性好,易与常规红外光学系统、电子和机械装置匹配耦合。

The invention discloses an infrared imaging detection chip based on wave vector measurement, which includes an area array infrared refraction microlens, an area array uncooled infrared detector and a drive control preprocessing module; wherein the area array uncooled infrared detector is located in the At the focal plane of the area array infrared refracting microlens, it is divided into a plurality of sub-array uncooled infrared detectors distributed in arrays, and each sub-array uncooled infrared detector includes multiple arrays distributed in the same number and arrangement. The photosensitive element; the area array infrared refraction microlens includes a plurality of unit infrared refraction microlenses distributed in an array, and each unit of the infrared refraction microlens corresponds to a sub-array uncooled infrared detector. The infrared imaging detection chip of the present invention can measure a wide range of infrared wave vector directions, high measurement accuracy, compact structure, good environmental adaptability, and is easy to match and couple with conventional infrared optical systems, electronic and mechanical devices.

Description

一种基于波矢测量的红外成像探测芯片An infrared imaging detection chip based on wave vector measurement

技术领域technical field

本发明属于红外成像探测技术领域,更具体地,涉及一种基于波矢测量的红外成像探测芯片。The invention belongs to the technical field of infrared imaging detection, and more specifically relates to an infrared imaging detection chip based on wave vector measurement.

背景技术Background technique

一般而言,从目标出射的多方向红外波束在大气中传输时表现为渐次发散这样一种空间分布形态。波矢方向不同的波束在能量传送效能方面的差异,反映了目标及其不同部位向周围空域投送红外能量的能力有所不同这一属性。该属性可归并到传输波束因其波矢方向改变所导致的光场能流分布的方向差异性。也就是说与目标的结构、形貌、姿态、方位以及距离等密切相关的,红外出射光波其能流场在空间分布和演化方面的变动,与红外波束其波矢的空间分布和传播形态的差异性,存在因果或递推性关联。上述差异性或关联性可通过常规成像探测操作,以目标形貌特征有所改变的平面电子姿态图像的形式再现出来,从而构成了基于波矢测量进行成像探测的物理和技术基础。Generally speaking, when the multi-directional infrared beams emitted from the target are transmitted in the atmosphere, they show a spatial distribution form such as gradual divergence. The difference in energy transfer effectiveness of beams with different wave vector directions reflects the different properties of the target and its different parts in their ability to project infrared energy into the surrounding airspace. This property can be attributed to the directional difference of the power flow distribution of the optical field caused by the change of the wave vector direction of the transmission beam. That is to say, closely related to the structure, shape, attitude, orientation and distance of the target, the changes in the spatial distribution and evolution of the energy flow field of the infrared outgoing light wave are related to the spatial distribution and propagation form of the wave vector of the infrared beam. difference, there is a causal or recursive association. The above-mentioned differences or correlations can be reproduced in the form of planar electronic attitude images with changes in the topographical features of the target through conventional imaging detection operations, thus forming the physical and technical basis for imaging detection based on wave vector measurement.

在基于波矢测量进行成像探测这一方面,目前的工作主要集中在可见光谱域。表现在通过测量目标光波基于波矢的三维展布和演化,获取仅具有细微方向差别的波矢簇所对应的电子目标图像,以及多波矢簇所对应的序列电子目标图像;发展高速高效算法对电子图像信息进行归类、扩充、细化和修饰等。在关键性的成像探测架构和数字图像信息处理方面的进展目前极为迅速。典型技术特征包括:(一)基于序列平面电子姿态图像的三维电子目标图像重建;(二)基于数字手段扩充电子图像序列获得更为完整和细腻的电子目标图像集;(三)通过在电子图像集中选取某一(类)图像,实现数字图像目标的电子再对焦,进一步清晰化或模糊化图像;(四)在电子目标场景中,通过选取不同区域或景深中的,等效于物空间中远近不同的新的物体作为对焦点而清晰化或淡化或模糊化景物;(五)通过选择特定图像序列来调整电子目标姿态,形成与常规三维影像类似的立体效果等。基于波矢测量的成像探测技术,正向着基于超大面阵光学/光电架构的硬件改进以及算法增强来快速甚至实时构建目标图像,从而显著提高成像探测效能的方向前进。In the aspect of imaging detection based on wave vector measurement, the current work mainly focuses on the visible spectrum domain. It is manifested by measuring the three-dimensional distribution and evolution of the target light wave based on the wave vector, obtaining the electronic target image corresponding to the wave vector cluster with only subtle direction differences, and the sequence electronic target image corresponding to the multi-wave vector cluster; developing high-speed and efficient algorithms Classify, expand, refine and modify electronic image information. Progress in key imaging detection architectures and digital image information processing is currently extremely rapid. Typical technical features include: (1) three-dimensional electronic target image reconstruction based on sequenced plane electronic attitude images; (2) expanding electronic image sequences based on digital means to obtain a more complete and delicate electronic target image set; Concentrate on selecting a certain (category) image to realize the electronic refocusing of the digital image target, and further clarify or blur the image; (4) In the electronic target scene, by selecting different areas or depths of field, it is equivalent to the object space New objects with different distances are used as focus points to clear or fade or blur the scene; (5) Adjust the electronic target posture by selecting a specific image sequence to form a three-dimensional effect similar to conventional three-dimensional images, etc. The imaging detection technology based on wave vector measurement is moving towards the direction of fast and even real-time construction of target images based on the hardware improvement of ultra-large area array optical/optical architecture and algorithm enhancement, thereby significantly improving the imaging detection efficiency.

迄今为止,尽管红外成像探测技术已获得广泛应用,由于红外电磁辐射的波长远大于可见光波长,造成红外焦平面上的成像光斑远大于可见光情形,使红外图像在清晰度、对比度和细节表现等方面,较可见光图像呈现本征性差距而使图像降质。另外,考虑到红外电磁福射的能态较低,基于红外CCD、CMOS或FPAs等面阵光敏结构的光电灵敏度仍远小于可见光情形。为获得足够的光电响应信号强度,单元光敏元仍需具有足够大的面形尺寸,这一结构要求使目前的阵列化红外光敏结构的阵列规模远小于可见光情形。上述因素导致基于焦平面架构的红外成像探测所能获取的图像像质远低于可见光图像,并且这种状况将维持相当长的一段时间。因此,如何将可见光谱域基于波矢测量的成像探测架构延伸到红外谱域,找到可以弥补甚至克服上述缺陷以提升红外像质和成像探测效能的技术措施,目前仍属空白,也是发展先进红外成像探测技术所面临的重点和难点问题,迫切需要新的突破。So far, although infrared imaging detection technology has been widely used, because the wavelength of infrared electromagnetic radiation is much longer than that of visible light, the imaging spot on the infrared focal plane is much larger than that of visible light, which makes the infrared image more accurate in terms of clarity, contrast and details. , compared with the visible light image, it presents an intrinsic gap and degrades the image. In addition, considering the low energy state of infrared electromagnetic radiation, the photoelectric sensitivity of area array photosensitive structures based on infrared CCD, CMOS or FPAs is still much lower than that of visible light. In order to obtain sufficient photoelectric response signal strength, the unit photosensitive element still needs to have a sufficiently large surface size. This structure requires that the array scale of the current arrayed infrared photosensitive structure is much smaller than that of visible light. The above factors lead to the fact that the image quality of infrared imaging detection based on focal plane architecture is much lower than that of visible light images, and this situation will remain for a long time. Therefore, how to extend the imaging detection architecture based on wavevector measurement in the visible spectral domain to the infrared spectral domain, and find technical measures that can make up for or even overcome the above-mentioned defects to improve the infrared image quality and imaging detection efficiency, is still blank at present, and it is also necessary to develop advanced infrared The key and difficult issues faced by imaging detection technology urgently need new breakthroughs.

发明内容Contents of the invention

针对现有技术的以上缺陷或改进需求,本发明提供了一种基于波矢测量的红外成像探测芯片,可测量的红外波矢方向的变动范围大,测量精度高,结构紧凑,环境适应性好,易与常规红外光学系统、电子和机械装置匹配耦合。In view of the above defects or improvement needs of the prior art, the present invention provides an infrared imaging detection chip based on wave vector measurement, which has a large range of change in the measurable infrared wave vector direction, high measurement accuracy, compact structure, and good environmental adaptability , easy to match and couple with conventional infrared optical systems, electronics and mechanical devices.

为实现上述目的,本发明提供了一种红外成像探测芯片,其特征在于,包括面阵红外折射微透镜、面阵非制冷红外探测器和驱控预处理模块;其中,所述面阵非制冷红外探测器位于所述面阵红外折射微透镜的焦面处,被划分成多个阵列分布的子面阵非制冷红外探测器,每个子面阵非制冷红外探测器包括数量和排布方式相同的多个阵列分布的光敏元;所述面阵红外折射微透镜包括多个阵列分布的单元红外折射微透镜,每单元红外折射微透镜与一个子面阵非制冷红外探测器对应;所述面阵红外折射微透镜用于聚焦目标红外光波,每单元红外折射微透镜使不同波矢方向的入射光波离散化排布,定向汇聚在与该单元红外折射微透镜对应的子面阵非制冷红外探测器的相应光敏元上,所述面阵红外折射微透镜使同一波矢方向的入射光线定向聚焦在多个子面阵非制冷红外探测器相同位置的光敏元上;所述面阵非制冷红外探测器用于将聚焦在多个子面阵非制冷红外探测器上的光波转换成电信号,得到不同波矢方向的红外波束各自对应的阵列化的红外光电响应信号;所述驱控预处理模块用于将阵列化的红外光电响应信号量化并进行非均匀性校正,得到与目标出射波束的波矢分布和空间传输情况对应的序列红外图像数据。In order to achieve the above object, the present invention provides an infrared imaging detection chip, which is characterized in that it includes an area array infrared refraction microlens, an area array uncooled infrared detector and a drive control preprocessing module; wherein the area array uncooled The infrared detector is located at the focal plane of the infrared refracting microlens of the area array, and is divided into a plurality of sub-array uncooled infrared detectors distributed in arrays, and each sub-array uncooled infrared detector includes the same number and arrangement A plurality of photosensitive elements distributed in an array; the area array infrared refraction microlens includes a plurality of unit infrared refraction microlenses distributed in an array, and each unit of the infrared refraction microlens corresponds to a sub-array uncooled infrared detector; the surface The array of infrared refraction microlenses is used to focus the target infrared light waves. Each unit of infrared refraction microlenses discretizes the incident light waves in different wave vector directions, and directional converges on the sub-surface array corresponding to the unit's infrared refraction microlenses for uncooled infrared detection. On the corresponding photosensitive element of the detector, the said area array infrared refracting microlens makes the incident light in the same wave vector direction focus on the photosensitive element at the same position of the multiple sub-array uncooled infrared detectors; the said area array uncooled infrared detector The device is used to convert the light waves focused on multiple sub-array uncooled infrared detectors into electrical signals, and obtain the arrayed infrared photoelectric response signals corresponding to the infrared beams in different wave vector directions; the drive control preprocessing module is used for The arrayed infrared photoelectric response signals are quantified and corrected for non-uniformity, and the sequence infrared image data corresponding to the wave vector distribution and space transmission of the target outgoing beam is obtained.

优选地,所述子面阵非制冷红外探测器为m×n元,其中,m、n均为大于1的整数。Preferably, the sub-array uncooled infrared detector has m×n elements, where m and n are both integers greater than 1.

优选地,所述驱控预处理模块将阵列化的红外光电响应信号量化,对其进行解算并进行非均匀性校正。Preferably, the control preprocessing module quantifies the arrayed infrared photoelectric response signals, solves them and performs non-uniformity correction.

优选地,所述驱控预处理模块采用SoC与FPGA结合的结构。Preferably, the control preprocessing module adopts a structure combining SoC and FPGA.

优选地,所述驱控预处理模块还用于为所述面阵非制冷红外探测器提供驱动和调控信号,驱动所述面阵非制冷红外探测器工作,并对所述面阵非制冷红外探测器转换的电信号进行调控。Preferably, the drive control preprocessing module is also used to provide driving and regulation signals for the area array uncooled infrared detector, to drive the area array uncooled infrared detector to work, and to control the area array uncooled infrared detector. The electrical signal converted by the detector is regulated.

优选地,还包括陶瓷外壳和金属支撑散热板;其中,所述陶瓷外壳位于所述金属支撑散热板的上方,所述金属支撑散热板与所述陶瓷外壳固联,用于支撑和散热,所述驱控预处理模块、所述面阵非制冷红外探测器和所述面阵红外折射微透镜同轴顺序置于所述陶瓷外壳内,其中,所述面阵非制冷红外探测器位于所述驱控预处理模块的上方,所述面阵红外折射微透镜位于所述面阵非制冷红外探测器的上方,且所述面阵红外折射微透镜的光入射面通过所述陶瓷外壳的面部开孔裸露在外。Preferably, it also includes a ceramic housing and a metal supporting cooling plate; wherein, the ceramic housing is located above the metal supporting cooling plate, and the metal supporting cooling plate is fixedly connected with the ceramic housing for supporting and dissipating heat. The drive and control preprocessing module, the area array uncooled infrared detector and the area array infrared refracting microlens are coaxially placed in the ceramic housing, wherein the area array uncooled infrared detector is located in the The top of the control preprocessing module, the area array infrared refraction microlens is located above the area array uncooled infrared detector, and the light incident surface of the area array infrared refraction microlens is opened through the face of the ceramic shell The holes are exposed.

优选地,所述驱控预处理模块上设有第二端口和第二指示灯,所述面阵非制冷红外探测器上设有第三端口和第三指示灯;所述第二端口用于输出所述驱控预处理模块提供给所述面阵非制冷红外探测器的驱动和调控信号,所述第二端口还用于输入所述面阵非制冷红外探测器提供给所述驱控预处理模块的红外光电响应信号,所述第二端口还用于接收外部设备向所述红外大景深成像探测芯片输入的工作指令,所述第二指示灯用于指示所述驱控预处理模块是否处在正常工作状态;所述第三端口用于输入所述驱控预处理模块提供给所述面阵非制冷红外探测器的驱动和调控信号,所述第三端口还用于输出所述面阵非制冷红外探测器提供给所述驱控预处理模块的红外光电响应信号,所述第三指示灯用于指示所述非制冷红外探测器是否处在正常工作状态。Preferably, the drive and control preprocessing module is provided with a second port and a second indicator light, and the area array uncooled infrared detector is provided with a third port and a third indicator light; the second port is used for Outputting the drive and regulation signals provided by the driving and control preprocessing module to the area array uncooled infrared detector, and the second port is also used to input the driving and control signals provided by the area array uncooled infrared detector to the driving control preprocessing The infrared photoelectric response signal of the processing module, the second port is also used to receive the work instruction input from the external device to the infrared large depth-of-field imaging detection chip, and the second indicator light is used to indicate whether the drive control preprocessing module is In a normal working state; the third port is used to input the drive and regulation signals provided by the driving and control preprocessing module to the area array uncooled infrared detector, and the third port is also used to output the area array uncooled infrared detector The array of uncooled infrared detectors provides infrared photoelectric response signals to the drive control preprocessing module, and the third indicator light is used to indicate whether the uncooled infrared detectors are in a normal working state.

优选地,所述驱控预处理模块上设有第四端口和第四指示灯,所述第四端口用于将所述序列红外图像数据从所述驱控预处理模块输出,所述第四指示灯用于指示所述驱控预处理模块是否处在正常数据输出状态。Preferably, the control preprocessing module is provided with a fourth port and a fourth indicator light, the fourth port is used to output the sequence infrared image data from the control preprocessing module, and the fourth The indicator light is used to indicate whether the drive control preprocessing module is in a normal data output state.

优选地,所述驱控预处理模块上设有第一端口和第一指示灯,所述第一端口用于接入电源线以连接外部电源,所述第一指示灯用于指示电源是否接通。Preferably, the drive control preprocessing module is provided with a first port and a first indicator light, the first port is used to connect the power line to connect to an external power supply, and the first indicator light is used to indicate whether the power supply is connected Pass.

总体而言,通过本发明所构思的以上技术方案与现有技术相比,具有以下有益效果:Generally speaking, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

1、目标其三维空间特征的单芯片成像探测。通过将面阵红外折射微透镜与面阵非制冷红外探测器耦合,实现不同波矢方向的红外辐射的捕获与成像探测操作,具有基于单片功能化红外探测阵列获取序列目标图像的特点。1. Single-chip imaging detection of the three-dimensional spatial characteristics of the target. By coupling the area array infrared refraction microlens with the area array uncooled infrared detector, the capture and imaging detection operations of infrared radiation in different wave vector directions are realized, and it has the characteristics of acquiring sequential target images based on a single-chip functional infrared detection array.

2、测量精度高。本发明采用面阵折射微透镜和面阵非制冷红外探测器,它们均具有极高的阵列规模并被混合集成而具有极高的结构稳定性。2. High measurement accuracy. The invention adopts an area array refraction microlens and an area array uncooled infrared detector, both of which have extremely high array scale and are mixed and integrated to have extremely high structural stability.

3、红外波矢方向的测量范围大。由于本发明采用了红外折射微透镜与子面阵非制冷红外探测器一一对应的探测架构,具有目标光波波矢方向的可测量范围大的优点。3. The measurement range of the infrared wave vector direction is large. Since the present invention adopts a detection framework of one-to-one correspondence between the infrared refracting microlens and the sub-array uncooled infrared detector, it has the advantage of a large measurable range of the wave vector direction of the target light wave.

4、环境适应性好。由于本发明采用了基于热效应的非制冷红外探测器,以及具有固定形貌的红外折射微透镜,测量谱段较宽,工作在室温环境,所以本发明具有环境适应性好的优点。4. Good environmental adaptability. Since the present invention adopts an uncooled infrared detector based on thermal effects, and an infrared refracting microlens with a fixed shape, has a wide measurement spectrum and works at room temperature, the present invention has the advantage of good environmental adaptability.

5、使用方便。本发明的面阵红外折射微透镜、面阵非制冷红外探测器以及驱控预处理模块被集成在单个芯片上,具有接插方便,易与常规红外光学系统、电子和机械装置匹配耦合的优点。5. Easy to use. The area array infrared refraction microlens, area array uncooled infrared detector and drive control preprocessing module of the present invention are integrated on a single chip, which has the advantages of convenient plugging and easy matching and coupling with conventional infrared optical systems, electronic and mechanical devices .

附图说明Description of drawings

图1是本发明实施例的红外成像探测芯片的结构示意图;Fig. 1 is a schematic structural view of an infrared imaging detection chip according to an embodiment of the present invention;

图2是本发明实施例的红外成像探测芯片的工作原理图,其中,(A)为针对强辐射目标的工作原理图;(B)为针对弱辐射目标的工作原理图;(C)为不同波矢方向红外波束在子面阵非制冷红外探测器上形成的焦斑分布示例。Fig. 2 is a working principle diagram of the infrared imaging detection chip according to an embodiment of the present invention, wherein (A) is a working principle diagram for a strong radiation target; (B) is a working principle diagram for a weak radiation target; (C) is a working principle diagram for a weak radiation target; An example of the focal spot distribution formed by the wave vector direction infrared beam on the sub-array uncooled infrared detector.

图1中:1-第一指示灯,2-第一端口,3-第二指示灯,4-第三指示灯,5-第二端口,6-第三端口,7-驱控预处理模块,8-面阵非制冷红外探测器,9-面阵红外折射微透镜,10-第四指示灯,11-第四端口,12-金属支撑散热板,13-陶瓷外壳。In Figure 1: 1-first indicator light, 2-first port, 3-second indicator light, 4-third indicator light, 5-second port, 6-third port, 7-drive control preprocessing module , 8-area uncooled infrared detector, 9-area infrared refracting microlens, 10-the fourth indicator light, 11-the fourth port, 12-metal support cooling plate, 13-ceramic shell.

具体实施方式detailed description

为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。此外,下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

一般而言,目标的红外出射光波在一个渐次增大的空域内散布和传播。不同波矢方向的波束在能量传送效能方面的差异,反映了目标或其不同部位向周围空域投送红外能量的能力有所不同这一属性,该属性可归并到传输光场因其波矢方向不同所导致的光场能流分布的方向差异性。该差异性通过红外成像探测操作,以目标特征有所变化的序列电子图像方式呈现出来。与此类似的是不同物距处的红外目标,也将基于出射光场其波矢在空间分布和传输形态方面的差异性,被成像系统转换为特征有所改变的序列电子目标图像。换言之,与目标的结构、形貌、姿态、方位以及距离等密切相关的红外出射光波能流场在空间分布和演化方面的变动,与目标光场波矢的空间分布和传播形态的差异性存在因果或递推性关联。上述差异性通过成像探测操作,以目标特征有所改变的序列电子图像的形式再现出来。因此,通过获取对目标光场其波束传输方向敏感的电子图像,基于序列图像信息构建三维目标及其空间运动行为,构成了基于波矢测量进行红外成像探测的基础。Generally speaking, the infrared outgoing light wave of the target spreads and propagates in a gradually increasing airspace. The difference in energy transfer efficiency of beams with different wave vector directions reflects the property that the ability of the target or its different parts to project infrared energy to the surrounding airspace is different, which can be attributed to the transmission light field due to its wave vector direction The difference in the direction of the energy flow distribution of the light field caused by the difference. This difference is presented as a sequence of electronic images in which the characteristics of the target change through the infrared imaging detection operation. Similar to this, the infrared targets at different object distances will also be converted into sequential electronic target images with changed characteristics by the imaging system based on the differences in the spatial distribution and transmission form of the wave vector of the outgoing light field. In other words, the changes in the spatial distribution and evolution of the infrared outgoing light wave energy flow field, which are closely related to the structure, shape, attitude, orientation, and distance of the target, are different from the spatial distribution and propagation form of the wave vector of the target light field. Causal or recursive association. The aforementioned differences are reproduced in the form of sequential electronic images of altered target characteristics through imaging detection operations. Therefore, by acquiring electronic images that are sensitive to the beam transmission direction of the target light field, and constructing the three-dimensional target and its spatial motion behavior based on the sequence image information, it constitutes the basis for infrared imaging detection based on wave vector measurement.

如图1所示,本发明的红外成像探测芯片包括:驱控预处理模块7、面阵非制冷红外探测器8、面阵红外折射微透镜9、陶瓷外壳13和金属支撑散热板12。As shown in FIG. 1 , the infrared imaging detection chip of the present invention includes: a drive and control preprocessing module 7 , an area array uncooled infrared detector 8 , an area array infrared refracting microlens 9 , a ceramic shell 13 and a metal support cooling plate 12 .

陶瓷外壳13位于金属支撑散热板14的上方。金属支撑散热板14与陶瓷外壳13固联,用于支撑和散热。驱控预处理模块7、面阵非制冷红外探测器8和面阵红外折射微透镜9同轴顺序置于陶瓷外壳13内。其中,驱控预处理模块7采用SoC和FPGA结合的结构,面阵非制冷红外探测器8位于驱控预处理模块7的上方,面阵红外折射微透镜9位于面阵非制冷红外探测器8的上方且其光入射面通过陶瓷外壳13的面部开孔裸露在外。The ceramic shell 13 is located above the metal supporting heat dissipation plate 14 . The metal supporting heat dissipation plate 14 is fixedly connected with the ceramic shell 13 for supporting and dissipating heat. The drive and control preprocessing module 7 , the area array uncooled infrared detector 8 and the area array infrared refraction microlens 9 are coaxially placed in the ceramic shell 13 in sequence. Among them, the drive control preprocessing module 7 adopts a structure combining SoC and FPGA, the area array uncooled infrared detector 8 is located above the drive control preprocessing module 7, and the area array infrared refracting microlens 9 is located at the area array uncooled infrared detector 8 The top and its light incident surface are exposed through the face opening of the ceramic shell 13 .

面阵非制冷红外探测器8位于面阵红外折射微透镜9的焦面处。面阵非制冷红外探测器8被划分成多个阵列分布的子面阵非制冷红外探测器,每个子面阵非制冷红外探测器包括数量和排布方式相同的多个阵列分布的光敏元。面阵红外折射微透镜9包括多个阵列分布的单元红外折射微透镜,每单元红外折射微透镜与一个子面阵非制冷红外探测器对应,子面阵非制冷红外探测器为m×n元,其中,m、n均为大于1的整数,例如,子面阵非制冷红外探测器可以是2×2元、4×4元、8×8元甚至更大规模阵列。The area array uncooled infrared detector 8 is located at the focal plane of the area array infrared refracting microlens 9 . The area array uncooled infrared detector 8 is divided into a plurality of array sub-array uncooled infrared detectors, and each sub-array uncooled infrared detector includes a plurality of array-distributed photosensitive elements with the same number and arrangement. The area array infrared refraction microlens 9 includes a plurality of unit infrared refraction microlenses distributed in an array, each unit of the infrared refraction microlens corresponds to a sub-array uncooled infrared detector, and the sub-array uncooled infrared detector is m×n elements , where m and n are both integers greater than 1. For example, the sub-array uncooled infrared detector can be a 2×2 element, 4×4 element, 8×8 element or even larger array.

面阵红外折射微透镜9用于聚焦目标红外光波,每单元红外折射微透镜使不同波矢方向的入射光线离散化排布,定向汇聚在与该单元红外折射微透镜对应的子面阵非制冷红外探测器的相应光敏元上,面阵红外折射微透镜9使同一波矢方向的入射光线定向汇聚在多个子面阵非制冷红外探测器相同位置的光敏元上。The area array infrared refraction microlens 9 is used to focus the target infrared light wave. Each unit of the infrared refraction microlens discretizes the incident light rays in different wave vector directions, and directional converges on the sub-array uncooled corresponding to the unit infrared refraction microlens. On the corresponding photosensitive elements of the infrared detector, the area array infrared refracting microlens 9 directs the incident light in the same wave vector direction to converge on the photosensitive elements at the same position of the multiple sub-array uncooled infrared detectors.

面阵非制冷红外探测器8用于将汇聚在多个子面阵非制冷红外探测器上的光波转换成电信号,得到不同波矢方向的红外波束各自对应的阵列化的红外光电响应信号。The area array uncooled infrared detector 8 is used to convert light waves converged on multiple sub-array uncooled infrared detectors into electrical signals to obtain arrayed infrared photoelectric response signals corresponding to infrared beams with different wave vector directions.

驱控预处理模块7用于将阵列化的红外光电响应信号量化,并进行非均匀性校正,得到与目标出射波束的波矢分布和空间传输情况对应的序列红外图像数据。The drive and control preprocessing module 7 is used to quantify the arrayed infrared photoelectric response signals and perform non-uniformity correction to obtain sequence infrared image data corresponding to the wave vector distribution and spatial transmission of the target outgoing beam.

驱控预处理模块7还用于为面阵非制冷红外探测器8提供驱动和调控信号,驱动面阵非制冷红外探测器8工作,并对面阵非制冷红外探测器8转换的电信号进行调控。The drive and control preprocessing module 7 is also used to provide driving and regulation signals for the area array uncooled infrared detector 8, drive the area array uncooled infrared detector 8 to work, and regulate the electrical signal converted by the area array uncooled infrared detector 8 .

驱控预处理模块7上设有第一端口2、第二端口5、第四端口11、第一指示灯1、第二指示灯3和第四指示灯10。其中,第一端口2用于接入电源线以连接外部电源,第二端口5用于输出驱控预处理模块7提供给面阵非制冷红外探测器8的驱动和调控信号,还用于输入面阵非制冷红外探测器8提供给驱控预处理模块7的红外光电响应信号,还用于接收外部设备向探测器输入的工作指令,第四端口11用于将序列红外图像数据从驱控预处理模块7输出,第一指示灯1用于指示电源是否接通,电源接通则第一指示灯1亮,否则熄灭,第二指示灯3用于指示驱控预处理模块7是否处在正常工作状态,驱控预处理模块7处在正常工作状态则第二指示灯3闪烁,否则熄灭,第四指示灯10用于指示驱控预处理模块7是否处在正常数据输出状态,驱控预处理模块7处在正常数据输出状态,则第四指示灯10闪烁,否则熄灭。The drive control preprocessing module 7 is provided with a first port 2 , a second port 5 , a fourth port 11 , a first indicator light 1 , a second indicator light 3 and a fourth indicator light 10 . Among them, the first port 2 is used to connect the power line to connect to an external power supply, and the second port 5 is used to output the drive and control signals provided by the drive control preprocessing module 7 to the area array uncooled infrared detector 8, and is also used to input The area array uncooled infrared detector 8 provides the infrared photoelectric response signal to the drive control preprocessing module 7, and is also used to receive work instructions input from external equipment to the detector. The fourth port 11 is used to transfer the sequence infrared image data from the drive control The output of the preprocessing module 7, the first indicator light 1 is used to indicate whether the power is turned on, the first indicator light 1 is on when the power is turned on, otherwise it is extinguished, and the second indicator light 3 is used to indicate whether the driving and control preprocessing module 7 is in the In the normal working state, if the driving and control preprocessing module 7 is in the normal working state, the second indicator light 3 will flicker, otherwise it will be off, and the fourth indicator light 10 is used to indicate whether the driving and control preprocessing module 7 is in the normal data output state, and the driving and control When the pre-processing module 7 is in the normal data output state, the fourth indicator light 10 is blinking, otherwise it is off.

面阵非制冷红外探测器8上设有第三端口6和第三指示灯4。其中,第三端口6用于输入驱控预处理模块7提供给面阵非制冷红外探测器8的驱动和调控信号,还用于输出面阵非制冷红外探测器8提供给驱控预处理模块7的红外光电响应信号,第三指示灯4用于指示面阵非制冷红外探测器8是否处在正常工作状态,非制冷红外探测器8处在正常工作状态则第三指示灯4闪烁,否则熄灭。The area array uncooled infrared detector 8 is provided with a third port 6 and a third indicator light 4 . Among them, the third port 6 is used to input the drive and control signals provided by the drive control preprocessing module 7 to the area array uncooled infrared detector 8, and is also used to output the area array uncooled infrared detector 8 to be provided to the drive control preprocessing module 7 infrared photoelectric response signal, the third indicator light 4 is used to indicate whether the area array uncooled infrared detector 8 is in a normal working state, the third indicator light 4 flashes when the uncooled infrared detector 8 is in a normal working state, otherwise off.

上述第一端口2、第二端口5、第三端口6、第四端口11、第一指示灯1、第二指示灯3、第三指示灯4及第四指示灯10均通过陶瓷外壳13的面部开孔裸露在外。The first port 2, the second port 5, the third port 6, the fourth port 11, the first indicator light 1, the second indicator light 3, the third indicator light 4 and the fourth indicator light 10 all pass through the ceramic shell 13. Facial openings are exposed.

下面结合图1说明本发明实施例的红外成像探测芯片的工作过程。The working process of the infrared imaging detection chip of the embodiment of the present invention will be described below with reference to FIG. 1 .

首先用并行信号线连接第二端口5和第三端口6,同时连接并行通讯线至第二端口5,连接并行数据线至第四端口11,连接电源线到第一端口2。通过并行通讯线由第二端口5送入电源开启指令,探测器开始自检,此时第一指示灯1、第二指示灯3、第三指示灯4、第四指示灯10接通闪烁。自检通过后第一指示灯1亮,第二指示灯3、第三指示灯4,以及第四指示灯10熄灭,探测器进入工作状态。通过并行通讯线由第二端口5送入开始工作指令后,探测器开始进行光电响应信号测量。驱控预处理模块7经第二端口5和第三端口6向面阵非制冷红外探测器8输入驱动和调控信号,面阵非制冷红外探测器8经第二端口5和第三端口6向驱控预处理模块7输出红外光电响应信号,此时第二指示灯3及第三指示灯4再次接通闪烁。红外光电响应信号经驱控预处理模块7处理后得到的序列红外图像数据由第四端口11输出,此时第四指示灯10再次接通闪烁。First connect the second port 5 and the third port 6 with a parallel signal line, connect the parallel communication line to the second port 5, connect the parallel data line to the fourth port 11, and connect the power line to the first port 2. The second port 5 sends a power-on command through the parallel communication line, and the detector starts self-checking. At this time, the first indicator light 1, the second indicator light 3, the third indicator light 4, and the fourth indicator light 10 are switched on and blink. After the self-test is passed, the first indicator light 1 lights up, the second indicator light 3, the third indicator light 4, and the fourth indicator light 10 go out, and the detector enters the working state. After the start-up command is sent from the second port 5 through the parallel communication line, the detector starts to measure the photoelectric response signal. The drive and control preprocessing module 7 inputs driving and regulation signals to the area array uncooled infrared detector 8 through the second port 5 and the third port 6, and the area array uncooled infrared detector 8 passes through the second port 5 and the third port 6 to the The driving control preprocessing module 7 outputs an infrared photoelectric response signal, and at this time, the second indicator light 3 and the third indicator light 4 are turned on and blink again. The sequence of infrared image data obtained after the infrared photoelectric response signal is processed by the drive control preprocessing module 7 is output by the fourth port 11 , and at this time the fourth indicator light 10 is turned on and blinks again.

图2是本发明实施例的红外成像探测芯片在探测红外图像目标时的工作原理图,为使本领域技术人员更好地理解本发明,下面结合图2详细说明本发明的红外成像探测芯片的工作原理。Fig. 2 is a working principle diagram of the infrared imaging detection chip of the embodiment of the present invention when detecting an infrared image target. In order to enable those skilled in the art to better understand the present invention, the following describes in detail the infrared imaging detection chip of the present invention in conjunction with Fig. 2 working principle.

如图2(A)所示,图像目标上的任意物点均向周围空域发射放射状的多方向锥形波束,以及演化成的传输方向相对固定的行进光线,其指向即为波矢方向。将面阵红外折射微透镜与面阵非制冷红外探测器匹配耦合,构成基于波矢测量的红外成像探测架构。在所设定的阵列规模或空间分辨率模式下,每单元红外折射微透镜对应4×4元子面阵非制冷红外探测器。针对强辐射目标,通过每单元红外折射微透镜对特定波矢入射波束的定向聚焦作用,将已直线化的锥形光束其细微的波矢方向差别,通过微透镜对入射波束的离散化排布加以显现,并被进一步定向聚焦在与各单元红外折射微透镜对应的子面阵非制冷红外探测器的相应光敏元上。面阵红外折射微透镜使同一波矢方向的入射光线定向汇聚在多个子面阵非制冷红外探测器相同位置的光敏元上,从而将入射光线按其波矢方向通过微透镜阵列,实现基于波矢方向的阵列化离散和再聚焦。典型的由波矢表征的红外波束所形成的焦斑情形如图2(A)所示,为使图形表达清晰,图中每个4×4元子面阵非制冷红外探测器对应一个波矢方向红外波束焦斑,另外两个波矢方向红外波束光路及其形成的焦斑省略未示出。As shown in Figure 2(A), any object point on the image target emits a radial multi-directional conical beam to the surrounding airspace, and evolves into a traveling light with a relatively fixed transmission direction, and its direction is the wave vector direction. The area array infrared refraction microlens is matched and coupled with the area array uncooled infrared detector to form an infrared imaging detection framework based on wave vector measurement. Under the set array scale or spatial resolution mode, each unit of infrared refracting microlens corresponds to a 4×4 element sub-array uncooled infrared detector. For strong radiation targets, through the directional focusing effect of each unit infrared refraction microlens on the specific wave vector incident beam, the slight difference in wave vector direction of the linearized conical beam, through the discrete arrangement of the incident beam by the micro lens It is displayed, and is further directed and focused on the corresponding photosensitive elements of the sub-array uncooled infrared detectors corresponding to the infrared refracting microlenses of each unit. The area array infrared refraction microlens makes the incident light in the same wave vector direction converge on the photosensitive element at the same position of multiple sub-array uncooled infrared detectors, so that the incident light passes through the micro lens array according to its wave vector direction, realizing wave-based Arrayed discretization and refocusing in the sagittal direction. typically by The focal spot formed by the infrared beam represented by the wave vector is shown in Fig. 2 (A). In order to make the graphic expression clear, each 4×4 element sub-array uncooled infrared detector in the figure corresponds to an infrared beam in the direction of the wave vector The focal spot, the optical path of the other two wave vector infrared beams and the focal spot formed by them are omitted and not shown.

面阵非制冷红外探测器将入射光波转换为电信号,得到不同波矢方向的阵列化红外波束所对应的红外光电响应信号阵列。驱控预处理模块(图中未示出)将阵列化的红外光电响应信号量化,进行非均匀性校正,得到与目标出射波束其波矢分布相对应的序列红外图像数据,即得到在一定视角范围内以不同视角观察目标的多幅平面姿态图像数据。The area array uncooled infrared detector converts the incident light wave into an electrical signal, and obtains an array of infrared photoelectric response signals corresponding to arrayed infrared beams in different wave vector directions. The drive and control preprocessing module (not shown in the figure) quantifies the arrayed infrared photoelectric response signals and performs non-uniformity correction to obtain the sequence infrared image data corresponding to the wave vector distribution of the target outgoing beam, that is, to obtain Multiple plane pose image data of the target observed from different angles of view within the range.

如图2(B)所示,针对弱辐射目标,需利用由主镜构成的成像光学系统提高对目标红外出射波束的收集能力。通过将基于波矢测量的红外成像探测芯片置于主镜的焦面处或进行弱离焦配置,进行红外图像信息捕获操作。由于成像光学系统首先对红外目标光波施加汇聚操作,即主镜对其执行了聚束式压缩,红外目标波束的波矢分布将产生相应变化。考虑到这一因素,在通过驱控预处理模块对红外光电信号进行量化处理后,还需进行相应解算,然后执行非均匀性校正,得到目标的序列红外图像数据。As shown in Figure 2(B), for weak radiation targets, it is necessary to use the imaging optical system composed of the primary mirror to improve the collection ability of the infrared outgoing beam of the target. The infrared image information capture operation is carried out by placing the infrared imaging detection chip based on the wave vector measurement at the focal plane of the primary mirror or performing a weak defocus configuration. Since the imaging optical system first performs a converging operation on the infrared target light wave, that is, the primary mirror performs a beamforming compression on it, the wave vector distribution of the infrared target beam will change accordingly. Considering this factor, after quantifying the infrared photoelectric signal through the drive control preprocessing module, it is necessary to perform corresponding calculations, and then perform non-uniformity correction to obtain the sequence infrared image data of the target.

图2(C)给出了一种典型的由不同波矢方向红外波束在子面阵非制冷红外探测器上形成的焦斑分布情况,如图所示,单元红外折射微透镜将不同波矢方向的光束离散化再聚焦于子面阵非制冷红外探测器的特定光敏元上。Figure 2(C) shows a typical distribution of focal spots formed by infrared beams with different wave vector directions on a sub-array uncooled infrared detector. As shown in the figure, the unit infrared refracting microlens will The discretization of the light beam in the direction is then focused on the specific photosensitive element of the sub-array uncooled infrared detector.

本发明的红外成像探测芯片,通过将面阵红外折射微透镜与面阵非制冷红外探测器耦合,采用单元红外折射微透镜与子面阵非制冷红外探测器一一对应的探测架构,可测量的红外波矢方向变动范围大,测量精度高,能实现动/静态目标空间特征的成像探测,环境适应性好,使用方便,易与常规红外光学系统、辅助电子和机械装置匹配耦合。The infrared imaging detection chip of the present invention can measure The infrared wave vector has a large range of changes, high measurement accuracy, and can realize imaging detection of dynamic/static target space features. It has good environmental adaptability, is easy to use, and is easy to match and couple with conventional infrared optical systems, auxiliary electronics and mechanical devices.

本领域的技术人员容易理解,以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims (8)

1. An infrared imaging detection chip is characterized by comprising an area array infrared refraction micro lens, an area array uncooled infrared detector and a driving and controlling preprocessing module; wherein,
the area array uncooled infrared detector is positioned at the focal plane of the area array infrared refraction micro lens and is divided into a plurality of sub-area array uncooled infrared detectors distributed in an array, and each sub-area array uncooled infrared detector comprises a plurality of photosensitive elements distributed in an array in the same number and arrangement mode;
the area array infrared refraction micro lens comprises a plurality of unit infrared refraction micro lenses distributed in an array, and each unit infrared refraction micro lens corresponds to one sub-area array uncooled infrared detector;
the area array infrared refraction micro lens is used for focusing target infrared light waves, each unit of infrared refraction micro lens enables incident light waves in different wave vector directions to be distributed in a discretization mode and directionally converged on corresponding photosensitive elements of the sub-area array uncooled infrared detector corresponding to the unit of infrared refraction micro lens, and the area array infrared refraction micro lens enables incident light rays in the same wave vector direction to be directionally converged on the photosensitive elements at the same position of the plurality of sub-area array uncooled infrared detectors;
the area array uncooled infrared detector is used for converting light waves focused on the plurality of sub-area array uncooled infrared detectors into electric signals to obtain arrayed infrared photoelectric response signals corresponding to infrared beams in different wave vector directions;
the driving and controlling preprocessing module adopts a structure of combining SoC and FPGA and is used for quantizing the arrayed infrared photoelectric response signals and carrying out non-uniformity correction to obtain sequence infrared image data corresponding to wave vector distribution and space transmission conditions of target emergent beams.
2. The infrared imaging detection chip of claim 1, wherein the non-refrigerated infrared detector of the sub-area array is an m x n element, where m and n are integers greater than 1.
3. The infrared imaging detection chip of claim 1, characterized in that the actuation preprocessing module quantizes, resolves, and corrects non-uniformity the arrayed infrared photoelectric response signals.
4. The infrared imaging detection chip of any one of claims 1 to 3, wherein the driving and controlling preprocessing module is further configured to provide driving and controlling signals for the area array uncooled infrared detector, drive the area array uncooled infrared detector to operate, and control the photoelectric signal converted by the area array uncooled infrared detector.
5. The infrared imaging detection chip of any one of claims 1 to 3, further comprising a ceramic housing and a metal supporting heat sink; wherein,
the ceramic package is located the top of metal-support heating panel, the metal-support heating panel with the ceramic package links admittedly for support and heat dissipation, drive accuse preprocessing module non-refrigeration infrared detector of area array with the coaxial order of area array infrared refraction microlens is arranged in the ceramic package, wherein, area array non-refrigeration infrared detector is located drive the top of accuse preprocessing module, area array infrared refraction microlens is located area array non-refrigeration infrared detector's top, just the light incident plane of area array infrared refraction microlens passes through the facial trompil of ceramic package exposes outside.
6. The infrared imaging detection chip of claim 5, wherein the driving and controlling preprocessing module is provided with a second port and a second indicator light, and the area array uncooled infrared detector is provided with a third port and a third indicator light;
the second port is used for outputting a driving and regulating signal provided by the driving and controlling preprocessing module for the area array uncooled infrared detector, inputting an infrared photoelectric response signal provided by the area array uncooled infrared detector for the driving and controlling preprocessing module, receiving a working instruction input by external equipment to the infrared imaging detection chip, and indicating whether the driving and controlling preprocessing module is in a normal working state by the second indicator light;
the third port is used for inputting driving and regulating signals provided by the driving and controlling preprocessing module for the area array uncooled infrared detector, the third port is also used for outputting infrared photoelectric response signals provided by the area array uncooled infrared detector for the driving and controlling preprocessing module, and the third indicator light is used for indicating whether the uncooled infrared detector is in a normal working state or not.
7. The infrared imaging detection chip of claim 6, wherein a fourth port and a fourth indicator light are disposed on the driving preprocessing module, the fourth port is configured to output the sequence infrared image data from the driving preprocessing module, and the fourth indicator light is configured to indicate whether the driving preprocessing module is in a normal data output state.
8. The infrared imaging detection chip of claim 7, wherein the driving and preprocessing module is provided with a first port and a first indicator light, the first port is used for connecting a power line to connect an external power supply, and the first indicator light is used for indicating whether the power supply is turned on.
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