CN104155002A - Scanning imaging spectrometer system - Google Patents
Scanning imaging spectrometer system Download PDFInfo
- Publication number
- CN104155002A CN104155002A CN201410342293.1A CN201410342293A CN104155002A CN 104155002 A CN104155002 A CN 104155002A CN 201410342293 A CN201410342293 A CN 201410342293A CN 104155002 A CN104155002 A CN 104155002A
- Authority
- CN
- China
- Prior art keywords
- unit
- imaging
- light signal
- preview
- scanning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 91
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000000701 chemical imaging Methods 0.000 claims abstract description 39
- 238000001228 spectrum Methods 0.000 claims abstract description 22
- 230000003595 spectral effect Effects 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 230000003068 static effect Effects 0.000 claims abstract description 5
- 230000004907 flux Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Spectrometry And Color Measurement (AREA)
Abstract
Description
技术领域technical field
本发明涉及光谱成像技术领域，尤其涉及一种扫描成像光谱仪系统。The invention relates to the technical field of spectral imaging, in particular to a scanning imaging spectrometer system.
背景技术Background technique
上个世纪八十年代以来，光谱成像技术开始被广泛应用于航天航空遥感成像。通过飞行器搭载，在矿产与石油资源探测、水质及大气污染监测、精准农业和林业等领域取得了瞩目成就。目前，这项技术已经逐步渗透到生物医学、艺术品防伪鉴定、食品安全监测、疾病的控制与治疗等民用领域，获得了越来越广泛的研究与运用。Since the 1980s, spectral imaging technology has been widely used in aerospace remote sensing imaging. Through the aircraft, it has made remarkable achievements in the fields of mineral and oil resource exploration, water quality and air pollution monitoring, precision agriculture and forestry. At present, this technology has gradually penetrated into civilian fields such as biomedicine, artwork anti-counterfeiting identification, food safety monitoring, disease control and treatment, and has obtained more and more extensive research and application.
光谱成像技术从原理上分为多种，其中，色散型成像光谱仪是最早提出并获得实用化的成像光谱仪器，它具有原理简单、易于实现等优点。然而，基于色散型的成像光谱仪一般每次光谱成像针对一条地物，完成一组光谱成像过程才能够看到视场全局，并对视场进行选择，这大大的增加了成像区域选择的时间，降低了成像光谱仪系统的效率。另外，现在使用摆镜的成像光谱仪将摆镜安装在成像镜头的前方，工作时会引入背景杂散光，降低了数据质量。There are many kinds of spectral imaging technology in principle. Among them, the dispersive imaging spectrometer is the earliest proposed and practical imaging spectrometer. It has the advantages of simple principle and easy implementation. However, for dispersion-based imaging spectrometers, each spectral imaging is generally aimed at a ground object, and only after completing a set of spectral imaging processes can the overall view of the field of view be seen and the field of view selected, which greatly increases the time for imaging area selection. Reduced efficiency of imaging spectrometer systems. In addition, the imaging spectrometer that uses the oscillating mirror is installed in front of the imaging lens, which will introduce background stray light during work, which reduces the data quality.
发明内容Contents of the invention
(一)要解决的技术问题(1) Technical problems to be solved
本发明要解决的技术问题是提供一种扫描成像光谱仪系统，能够减少背景杂散光干扰以及减小成像区域选择的时间，提高系统的效率。The technical problem to be solved by the present invention is to provide a scanning imaging spectrometer system, which can reduce the interference of background stray light and the time for selecting an imaging area, and improve the efficiency of the system.
(二)技术方案(2) Technical solution
为解决上述技术问题，本发明的技术方案提供了一种扫描成像光谱仪系统，包括成像镜头单元、扫描单元、预览成像单元、光谱分光单元、探测单元和计算机单元；In order to solve the above technical problems, the technical solution of the present invention provides a scanning imaging spectrometer system, including an imaging lens unit, a scanning unit, a preview imaging unit, a spectrum splitting unit, a detection unit and a computer unit;
所述成像镜头单元，用于收集地物样品的漫反射光信号；The imaging lens unit is used to collect diffuse reflection light signals of ground feature samples;
所述扫描单元包括摆镜，通过所述摆镜实现所述系统在预览模式与光谱成像模式之间的切换，当所述系统处于预览模式时，所述摆镜以静止的状态将所述漫反射光信号反射至所述预览成像单元，当所述系统处于光谱成像模式时，所述摆镜以摆扫的状态将所述漫反射光信号反射至光谱分光单元；The scanning unit includes an oscillating mirror through which the system can be switched between the preview mode and the spectral imaging mode. When the system is in the preview mode, the oscillating mirror scans the diffuse The reflected light signal is reflected to the preview imaging unit, and when the system is in the spectral imaging mode, the swing mirror reflects the diffuse reflected light signal to the spectral splitting unit in a swinging state;
所述预览成像单元，用于将接收的漫反射光信号进行聚焦，并将所述聚焦后的漫反射光信号转向至所述探测单元的光敏面上；The preview imaging unit is configured to focus the received diffuse reflection light signal, and turn the focused diffuse reflection light signal to the photosensitive surface of the detection unit;
所述光谱分光单元，用于对接收的漫反射光信号进行分光，并将所述分光得到的光信号反射至所述探测单元的光敏面上；The spectrum splitting unit is configured to split the received diffusely reflected light signal, and reflect the light signal obtained by the split to the photosensitive surface of the detection unit;
所述计算机单元，与所述探测单元相连，用于当所述系统处于预览模式时根据所述探测单元探测的信息得到预览信息，当所述系统处于光谱成像模式时根据所述探测单元探测的信息得到光谱信息。The computer unit is connected to the detection unit, and is used to obtain preview information according to the information detected by the detection unit when the system is in the preview mode, and obtain preview information according to the information detected by the detection unit when the system is in the spectral imaging mode. information to get spectral information.
进一步地，所述扫描单元位于所述成像镜头单元的后方，所述系统还包括外壳，所述扫描单元、预览成像单元、光谱分光单元以及探测单元均位于所述外壳内，形成封闭结构。Further, the scanning unit is located behind the imaging lens unit, and the system further includes a casing, and the scanning unit, the preview imaging unit, the spectrum splitting unit and the detection unit are all located in the casing to form a closed structure.
进一步地，所述扫描单元还包括电机和控制器，所述控制器通过所述电机对所述摆镜的状态进行控制，当所述系统处于预览模式时，所述控制器控制所述摆镜处于静止的状态，将所述漫反射光信号反射至所述预览成像单元，当所述系统处于光谱成像模式时，所述控制器控制所述摆镜处于摆扫的状态，将所述漫反射光信号反射至光谱分光单元。Further, the scanning unit further includes a motor and a controller, the controller controls the state of the oscillating mirror through the motor, and when the system is in the preview mode, the controller controls the oscillating mirror In a static state, the diffuse reflection light signal is reflected to the preview imaging unit. When the system is in the spectral imaging mode, the controller controls the swing mirror to be in a swing state, and the diffuse reflection The light signal is reflected to the spectrum splitting unit.
进一步地，所述电机为步进电机或者伺服电机。Further, the motor is a stepping motor or a servo motor.
进一步地，所述预览成像单元包括第一反射镜、透镜、第二反射镜；Further, the preview imaging unit includes a first mirror, a lens, and a second mirror;
所述第一反射镜，用于将所述预览成像单元接收的漫反射光信号反射至所述透镜；The first mirror is configured to reflect the diffusely reflected light signal received by the preview imaging unit to the lens;
所述透镜，用于对漫反射光信号进行聚焦；The lens is used to focus the diffusely reflected light signal;
所述第二反射镜，用于将所述聚焦后的漫反射光信号反射至所述探测单元的光敏面上。The second reflection mirror is used to reflect the focused diffuse reflection light signal to the photosensitive surface of the detection unit.
进一步地，所述光谱分光单元包括中继透镜、狭缝、第一球面反射镜、分光结构、第二球面反射镜；Further, the spectrum splitting unit includes a relay lens, a slit, a first spherical reflector, a light splitting structure, and a second spherical reflector;
所述中继透镜，用于将所述光谱分光单元接收的漫反射光信号聚焦在所述狭缝处；The relay lens is configured to focus the diffusely reflected light signal received by the spectrum splitting unit on the slit;
所述狭缝，用于限制漫反射光信号的光通量；The slit is used to limit the luminous flux of the diffuse reflection optical signal;
所述第一球面反射镜，用于将透过所述狭缝的漫反射光信号聚焦到所述分光结构；The first spherical mirror is used to focus the diffusely reflected light signal passing through the slit to the light splitting structure;
所述分光结构，用于对透过所述狭缝的漫反射光信号进行分光；The light splitting structure is used for splitting the diffusely reflected light signal passing through the slit;
所述第二球面反射镜，用于将分光后得到的光信号聚焦至所述探测单元的光敏面上。The second spherical reflector is used to focus the light signal obtained after light splitting onto the photosensitive surface of the detection unit.
进一步地，所述分光结构为凸面光栅。Further, the light splitting structure is a convex grating.
进一步地，所述探测单元为面阵探测器。Further, the detection unit is an area array detector.
(三)有益效果(3) Beneficial effects
本发明通过单片摆镜实现系统在预览模式与光谱成像模式之间的切换，并同时完成光谱成像模式摆扫功能，减少了系统器件数量，减少系统复杂程度，增加了稳定性。预览模式因此可以减小成像区域选择的时间，提高系统的效率，有效利用野外时间的有效光照，克服了光谱成像过程较慢，时间较长，不适用于选择视场区域的缺点。本发明将扫描单元安装在成像镜头的后方，如此可以使用外壳将光学器件和探测器件封装在密闭环境中，有效的减少了背景杂散光的影响。The invention realizes switching between the preview mode and the spectral imaging mode of the system through a single-chip swinging mirror, and simultaneously completes the swinging function of the spectral imaging mode, reduces the number of system components, reduces the complexity of the system, and increases stability. The preview mode can therefore reduce the time for selecting the imaging area, improve the efficiency of the system, effectively use the effective illumination of the field time, and overcome the shortcomings of the spectral imaging process being slow and taking a long time, which is not suitable for selecting the field of view area. In the present invention, the scanning unit is installed behind the imaging lens, so that the optical device and the detection device can be packaged in a closed environment by using a casing, and the influence of background stray light is effectively reduced.
附图说明Description of drawings
图1是本发明实施方式提供的一种扫描成像光谱仪系统的示意图；Fig. 1 is a schematic diagram of a scanning imaging spectrometer system provided by an embodiment of the present invention;
图2是本发明实施方式提供的另一种扫描成像光谱仪系统的示意图。Fig. 2 is a schematic diagram of another scanning imaging spectrometer system provided by an embodiment of the present invention.
具体实施方式Detailed ways
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
图1是本发明实施方式提供的一种扫描成像光谱仪系统的示意图，该系统包括成像镜头单元1、扫描单元2、预览成像单元3、光谱分光单元4、探测单元5和计算机单元6；Fig. 1 is a schematic diagram of a scanning imaging spectrometer system provided by an embodiment of the present invention, the system includes an imaging lens unit 1, a scanning unit 2, a preview imaging unit 3, a spectrum splitting unit 4, a detection unit 5 and a computer unit 6;
所述成像镜头单元1，用于收集地物样品的漫反射光信号；该成像镜头单元可由成像镜头组成，通过其中的成像镜头收集地物样品的漫反射光信号。The imaging lens unit 1 is used to collect the diffuse reflection light signal of the surface feature sample; the imaging lens unit may be composed of an imaging lens, and the diffuse reflection light signal of the ground feature sample is collected through the imaging lens.
所述扫描单元2包括摆镜，通过所述摆镜实现所述系统在预览模式与光谱成像模式之间的切换，当所述系统处于预览模式时，所述摆镜以静止的状态将所述漫反射光信号反射至所述预览成像单元，当所述系统处于光谱成像模式时，所述摆镜以摆扫的状态将所述漫反射光信号反射至光谱分光单元；The scanning unit 2 includes an oscillating mirror, through which the switching of the system between the preview mode and the spectral imaging mode is realized. When the system is in the preview mode, the oscillating mirror scans the The diffuse reflection light signal is reflected to the preview imaging unit, and when the system is in the spectral imaging mode, the swing mirror reflects the diffuse reflection light signal to the spectrum splitting unit in a swinging state;
所述预览成像单元3，用于将接收的漫反射光信号进行聚焦，并将所述聚焦后的漫反射光信号转向至所述探测单元5的光敏面上；The preview imaging unit 3 is configured to focus the received diffuse reflection light signal, and turn the focused diffuse reflection light signal to the photosensitive surface of the detection unit 5;
所述光谱分光单元4，用于对接收的漫反射光信号进行分光，并将所述分光得到的光信号反射至所述探测单元5的光敏面上；其中，光谱分光单元4的另一端口与探测单元5相连，探测单元5的另一端口与计算机单元6连接；光谱分光单元可以采用凸面光栅的色散方式或PGP(棱镜-光栅-棱镜)色散分光方式，还可改用滤光片转轮、液晶可调滤光片、声光可调滤光片等可以实现同样的光谱成像功能。The spectrum splitting unit 4 is used to split the received diffuse reflection light signal, and reflect the light signal obtained by the splitting to the photosensitive surface of the detection unit 5; wherein, another port of the spectrum splitting unit 4 It is connected with the detection unit 5, and the other port of the detection unit 5 is connected with the computer unit 6; the spectral light splitting unit can adopt the dispersion mode of the convex grating or the PGP (prism-grating-prism) dispersion mode, and can also use a filter to switch Wheels, liquid crystal tunable filters, acousto-optic tunable filters, etc. can achieve the same spectral imaging function.
所述计算机单元6，与所述探测单元相连，用于当所述系统处于预览模式时根据所述探测单元探测的信息得到预览信息，当所述系统处于光谱成像模式时根据所述探测单元探测的信息得到光谱信息。通过该计算机单元可对系统的软硬件进行控制，以便对光谱数据进行采集，处理，展示以及存储。The computer unit 6 is connected to the detection unit, and is used to obtain preview information according to the information detected by the detection unit when the system is in the preview mode, and to obtain preview information according to the detection information of the detection unit when the system is in the spectral imaging mode. information to obtain spectral information. The computer unit can control the software and hardware of the system, so as to collect, process, display and store the spectral data.
优选地，参见图1，上述系统还包括外壳18，所述扫描单元2、预览成像单元3、光谱分光单元4以及探测单元5均位于所述外壳18内。具体地，可将扫描单元放置在成像镜头单元的后方，通过成像镜头的前方收集地物样品的漫反射光信号，并将计算机单元和成像镜头之外的光学器件封装在外壳中，可以有效的减少背景光的影响，提高了系统的信噪比，改善了光谱数据的质量。Preferably, referring to FIG. 1 , the above system further includes a housing 18 , and the scanning unit 2 , the preview imaging unit 3 , the spectroscopic unit 4 and the detection unit 5 are all located in the housing 18 . Specifically, the scanning unit can be placed behind the imaging lens unit, and the diffuse reflection light signal of the surface object sample can be collected through the front of the imaging lens, and the computer unit and optical devices other than the imaging lens can be packaged in the housing, which can effectively Reduce the influence of background light, improve the signal-to-noise ratio of the system, and improve the quality of spectral data.
本发明通过单片摆镜实现系统在预览模式与光谱成像模式之间的切换，并同时完成光谱成像模式摆扫功能，减少了系统器件数量，减少系统复杂程度，增加了稳定性。从而可以在光谱成像模式之前对成像区域进行预览，预览模式因此可以减小成像区域选择的时间，提高系统的效率，有效利用野外时间的有效光照，克服了光谱成像过程较慢，时间较长，不适用于选择视场区域的缺点。本发明将扫描单元安装在成像镜头的后方，如此可以使用外壳将光学器件和探测器件封装在密闭环境中，有效的减少了背景杂散光的影响。The invention realizes switching between the preview mode and the spectral imaging mode of the system through a single-chip swinging mirror, and simultaneously completes the swinging function of the spectral imaging mode, reduces the number of system components, reduces the complexity of the system, and increases stability. Therefore, the imaging area can be previewed before the spectral imaging mode. The preview mode can therefore reduce the time for selecting the imaging area, improve the efficiency of the system, effectively use the effective illumination of the field time, and overcome the slow and long time of the spectral imaging process. Disadvantages of not being able to select the field of view area. In the present invention, the scanning unit is installed behind the imaging lens, so that the optical device and the detection device can be packaged in a closed environment by using a casing, and the influence of background stray light is effectively reduced.
参见图2，图2是本发明实施方式提供的另一种扫描成像光谱仪系统的示意图，该系统包括成像镜头单元1、扫描单元2、预览成像单元3、光谱分光单元4、探测单元5和计算机单元6；Referring to Fig. 2, Fig. 2 is a schematic diagram of another scanning imaging spectrometer system provided by an embodiment of the present invention, the system includes an imaging lens unit 1, a scanning unit 2, a preview imaging unit 3, a spectrum splitting unit 4, a detection unit 5 and a computer Unit 6;
其中，扫描单元2包括摆镜10，还包括电机11和控制器12，所述控制器12通过所述电机11对所述摆镜10的状态进行控制，当系统处于预览模式时，控制器12控制摆镜10处于静止的状态，将漫反射光信号反射至预览成像单元，当系统处于光谱成像模式时，控制器12控制摆镜10处于摆扫的状态，将漫反射光信号反射至光谱分光单元。其中，上述电机可以为步进电机或者伺服电机。例如，上述的电机可以为步进电机，控制器可以为步进电机控制器，摆镜10为镀膜的反射镜，通过机械连接的方式与步进电机11相连，步进电机11在步进电机控制器12的控制下控制摆镜10的转动，步进电机控制器可以为商用控制卡，采集卡，或者自发设计的电路板卡。当系统处于预览成像模式时，控制器控制摆镜处于静止状态，并使摆镜与漫反射光信号的入射光轴保持预设的夹角，例如其夹角可以为135度；当系统处于光谱成像模式时，控制器控制摆镜以预设的角度内来回摆扫，将扫描线对应地物样品的光信号反射到光谱分光单元。Wherein, the scanning unit 2 includes an oscillating mirror 10, and also includes a motor 11 and a controller 12, the controller 12 controls the state of the oscillating mirror 10 through the motor 11, and when the system is in preview mode, the controller 12 Control the oscillating mirror 10 to be in a static state, and reflect the diffuse reflected light signal to the preview imaging unit. When the system is in the spectral imaging mode, the controller 12 controls the oscillating mirror 10 to be in a state of swinging, and reflect the diffuse reflected light signal to the spectral spectroscopic unit. Wherein, the above-mentioned motor may be a stepping motor or a servo motor. For example, the above-mentioned motor can be a stepper motor, the controller can be a stepper motor controller, and the pendulum mirror 10 is a coated reflector, which is connected to the stepper motor 11 by a mechanical connection, and the stepper motor 11 is connected to the stepper motor. The rotation of the swing mirror 10 is controlled under the control of the controller 12, and the stepping motor controller can be a commercial control card, an acquisition card, or a self-designed circuit board. When the system is in the preview imaging mode, the controller controls the oscillating mirror to be in a static state, and keeps the oscillating mirror and the incident optical axis of the diffuse reflection light signal at a preset angle, for example, the angle can be 135 degrees; when the system is in the spectrum In the imaging mode, the controller controls the oscillating mirror to sweep back and forth within a preset angle, and reflects the optical signal of the ground object sample corresponding to the scanning line to the spectral spectroscopic unit.
所述预览成像单元3包括第一反射镜7、透镜8、第二反射镜9；The preview imaging unit 3 includes a first mirror 7, a lens 8, and a second mirror 9;
所述第一反射镜7，用于将所述预览成像单元接收的漫反射光信号反射至所述透镜；The first reflector 7 is configured to reflect the diffuse reflection light signal received by the preview imaging unit to the lens;
所述透镜8，用于对漫反射光信号进行聚焦；The lens 8 is used to focus the diffusely reflected light signal;
所述第二反射镜9，用于将所述聚焦后的漫反射光信号反射至所述探测单元的光敏面上。The second reflector 9 is used to reflect the focused diffuse reflection light signal to the photosensitive surface of the detection unit.
所述光谱分光单元4包括中继透镜13、狭缝14、第一球面反射镜15、分光结构16、第二球面反射镜17；The spectrum splitting unit 4 includes a relay lens 13, a slit 14, a first spherical reflector 15, a light splitting structure 16, and a second spherical reflector 17;
所述中继透镜13，用于将所述光谱分光单元接收的漫反射光信号聚焦在所述狭缝处；其中，通过使预览成像单元中的透镜的焦距与光谱分光单元中的中继透镜相匹配使得预览成像模式和光谱成像模式的视场一致。The relay lens 13 is used to focus the diffusely reflected light signal received by the spectrum splitting unit at the slit; wherein, by making the focal length of the lens in the preview imaging unit and the relay lens in the spectrum splitting unit Matching makes the fields of view of preview imaging mode and spectral imaging mode consistent.
所述狭缝14，用于限制漫反射光信号的光通量，进而与分光结构、探测单元一起决定了整个系统的光谱分辨率；The slit 14 is used to limit the luminous flux of the diffusely reflected light signal, and then determines the spectral resolution of the entire system together with the light splitting structure and the detection unit;
所述第一球面反射镜15，用于将透过所述狭缝的漫反射光信号聚焦到所述分光结构；The first spherical mirror 15 is used to focus the diffusely reflected light signal passing through the slit to the light splitting structure;
所述分光结构16，用于对透过所述狭缝的漫反射光信号进行分光；其中，分光结构16可以为凸面光栅结构，通过该分光结构将光信号色散分光，按照不同的波长分布在不同的位置；The light-splitting structure 16 is used to split the diffusely reflected optical signal passing through the slit; wherein, the light-splitting structure 16 may be a convex grating structure, and the light signal is dispersed and split according to different wavelengths by the light-splitting structure. different locations;
所述第二球面反射镜17，用于将分光后得到的光信号聚焦至所述探测单元的光敏面上。The second spherical reflector 17 is used to focus the light signal obtained after light splitting onto the photosensitive surface of the detection unit.
此外，还可以在光谱分光单元中的中继透镜前增加滤光片改用荧光谱成像方式可以实现同样的光谱成像功能。In addition, the same spectral imaging function can be realized by adding a filter before the relay lens in the spectral beam splitting unit and using the fluorescent spectral imaging method instead.
具体地，当系统处于预览模式时，成像镜头单元1收集地物样品的漫反射光信号进入扫描单元2，控制器12控制扫描单元2中的摆镜与入射光轴成135度夹角静止，将漫反射光信号的光路折向预览成像单元3，预览成像单元3中的第一反射镜7将光路转向透镜8，镜头8将信号聚焦，第二反射镜9将聚焦状态的光束转向探测单元5的光敏面上进行探测，此时只具有成像功能，可以通过转动成像平台的方式对成像视场进行快速切换；当系统处于光谱成像模式时，控制器12控制扫描单元2中的摆镜10转向光谱分光单元4，摆镜10在一定角度内来回摆扫将成像镜头单元1收集的地物样品的漫反射光信号反射进入光谱分光单元4，光谱分光单元4中的中继透镜13将摆镜10反射的光束聚焦在光谱分光单元4的狭缝14处，第一球面反射镜15将通过狭缝14的狭长光束聚焦在分光结构16上，分光结构16对光束进行色散分光，第二球面反射镜17将色散分光后的光束聚焦在探测单元5的光敏面上。其中，探测单元5可以为面阵探测器，例如可以是CCD、sCMOS、平板探测器或者其他具有同样功能的面阵探测器，探测器光敏面平行于狭缝的方向称为空间维，每一行的光敏面元是地物条带一个光谱通道的像；探测器光敏面垂直于狭缝的方向是光谱维，光敏面每一列光敏面元上是地物条带一个空间采样视场(像元)光谱色散的像，探测单元5中的面阵探测器将探测得到的光谱信息交由计算机单元6处理得到每一像素点的光谱信息，一般，成像光谱仪每一次成像针对一条地物扫描线，通过摆镜10来回摆扫就可以对成像镜头单元1视场内的地物样品进行光谱成像。Specifically, when the system is in the preview mode, the imaging lens unit 1 collects the diffuse reflection light signal of the surface object sample and enters the scanning unit 2, and the controller 12 controls the pendulum mirror in the scanning unit 2 to be stationary at an angle of 135 degrees to the incident optical axis. The optical path of the diffuse reflection light signal is turned to the preview imaging unit 3, the first mirror 7 in the preview imaging unit 3 turns the optical path to the lens 8, the lens 8 focuses the signal, and the second mirror 9 turns the focused light beam to the detection unit 5 for detection on the photosensitive surface, which only has an imaging function at this time, and the imaging field of view can be quickly switched by rotating the imaging platform; when the system is in the spectral imaging mode, the controller 12 controls the swing mirror 10 in the scanning unit 2 Turning to the spectroscopic unit 4, the swing mirror 10 swings back and forth within a certain angle to reflect the diffuse reflection light signal of the feature sample collected by the imaging lens unit 1 into the spectroscopic unit 4, and the relay lens 13 in the spectroscopic unit 4 will swing The light beam reflected by the mirror 10 is focused on the slit 14 of the spectrum beam splitting unit 4, and the first spherical reflector 15 focuses the narrow and long beam passing through the slit 14 on the beam splitting structure 16, and the beam splitting structure 16 disperses and splits the light beam, and the second spherical mirror 15 The reflective mirror 17 focuses the dispersed beam on the photosensitive surface of the detection unit 5 . Wherein, the detection unit 5 can be an area array detector, such as CCD, sCMOS, flat panel detector or other area array detectors with the same function. The photosensitive bin is the image of a spectral channel of the feature strip; the direction of the photosensitive surface of the detector perpendicular to the slit is the spectral dimension, and each column of photosensitive bins on the photosensitive surface is a spatial sampling field of view of the feature strip (pixel ) image of spectral dispersion, the area array detector in the detection unit 5 hands over the detected spectral information to the computer unit 6 for processing to obtain the spectral information of each pixel point, generally, each imaging of the imaging spectrometer is aimed at a feature scanning line, By swinging the mirror 10 back and forth, spectral imaging can be performed on the feature samples within the field of view of the imaging lens unit 1 .
在本发明实施方式提供的扫描成像光谱仪系统中，使用摆镜通过转动不同角度切换预览模式和光谱成像模式，在光谱成像之前切换到感用户兴趣的区域，不但减少光谱成像的准备时间，以便在有限的光照时间内对更多的感兴趣区域进行成像，还减少了系统中光学元件的数量，简化了系统的复杂程度，此外，系统将扫描单元安装在成像镜头单元后方，该系统将计算机单元与成像镜头外的光学器件封装在外壳内，有效的减少了背景杂散光的影响，提高了信噪比，改善了光谱数据的质量。In the scanning imaging spectrometer system provided by the embodiment of the present invention, the preview mode and the spectral imaging mode are switched by rotating different angles by using the swing mirror, and the area of interest to the user is switched before spectral imaging, which not only reduces the preparation time for spectral imaging, but also reduces the preparation time for spectral imaging. Imaging more regions of interest within a limited illumination time also reduces the number of optical components in the system and simplifies the complexity of the system. In addition, the system installs the scanning unit behind the imaging lens unit, and the system integrates the computer unit The optical device outside the imaging lens is packaged in the housing, which effectively reduces the influence of background stray light, improves the signal-to-noise ratio, and improves the quality of spectral data.
以上实施方式仅用于说明本发明，而并非对本发明的限制，有关技术领域的普通技术人员，在不脱离本发明的精神和范围的情况下，还可以做出各种变化和变型，因此所有等同的技术方案也属于本发明的范畴，本发明的专利保护范围应由权利要求限定。The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Those of ordinary skill in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all Equivalent technical solutions also belong to the category of the present invention, and the scope of patent protection of the present invention should be defined by the claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410342293.1A CN104155002B (en) | 2014-07-17 | 2014-07-17 | Scanning imagery spectrometer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410342293.1A CN104155002B (en) | 2014-07-17 | 2014-07-17 | Scanning imagery spectrometer system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104155002A true CN104155002A (en) | 2014-11-19 |
| CN104155002B CN104155002B (en) | 2016-03-02 |
Family
ID=51880565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410342293.1A Active CN104155002B (en) | 2014-07-17 | 2014-07-17 | Scanning imagery spectrometer system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104155002B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656100A (en) * | 2015-02-25 | 2015-05-27 | 中国科学院遥感与数字地球研究所 | Line-scanning hyperspectral real-time anomaly detection method and system |
| CN105043541A (en) * | 2015-09-08 | 2015-11-11 | 四川双利合谱科技有限公司 | Polygon mirror assembly of swing-scanning spectrometer |
| CN105292508A (en) * | 2015-11-24 | 2016-02-03 | 孙颖 | Imaging method for rotor wing unmanned aerial vehicle-based scanning imaging system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1567852A1 (en) * | 2002-12-02 | 2005-08-31 | Erasmus University Rotterdam | Use of high wavenumber raman spectroscopy for measuring tissue |
| CN101504316A (en) * | 2008-12-16 | 2009-08-12 | 北京理工大学 | Color filter tuning type window scanning optical spectrum imaging system and method |
| CN101806622A (en) * | 2010-03-22 | 2010-08-18 | 中国科学院遥感应用研究所 | Ground imaging spectral measurement system |
| CN103913419A (en) * | 2014-03-20 | 2014-07-09 | 中国科学院遥感与数字地球研究所 | Double-optical path switching imaging spectral system |
-
2014
- 2014-07-17 CN CN201410342293.1A patent/CN104155002B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1567852A1 (en) * | 2002-12-02 | 2005-08-31 | Erasmus University Rotterdam | Use of high wavenumber raman spectroscopy for measuring tissue |
| CN101504316A (en) * | 2008-12-16 | 2009-08-12 | 北京理工大学 | Color filter tuning type window scanning optical spectrum imaging system and method |
| CN101806622A (en) * | 2010-03-22 | 2010-08-18 | 中国科学院遥感应用研究所 | Ground imaging spectral measurement system |
| CN103913419A (en) * | 2014-03-20 | 2014-07-09 | 中国科学院遥感与数字地球研究所 | Double-optical path switching imaging spectral system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656100A (en) * | 2015-02-25 | 2015-05-27 | 中国科学院遥感与数字地球研究所 | Line-scanning hyperspectral real-time anomaly detection method and system |
| CN105043541A (en) * | 2015-09-08 | 2015-11-11 | 四川双利合谱科技有限公司 | Polygon mirror assembly of swing-scanning spectrometer |
| CN105292508A (en) * | 2015-11-24 | 2016-02-03 | 孙颖 | Imaging method for rotor wing unmanned aerial vehicle-based scanning imaging system |
| CN105292508B (en) * | 2015-11-24 | 2018-06-29 | 孙颖 | A kind of imaging method of the scanning imaging system based on rotor wing unmanned aerial vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104155002B (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103913419B (en) | Dual optical path switching imaging spectroscopy system | |
| CN101793559B (en) | A light and small interference imaging spectrum full polarization detection device | |
| CN101806625B (en) | Static Fourier transform interference imaging spectrum full-polarization detector | |
| CN204359434U (en) | A kind of imaging spectral instrument system | |
| CN103344333A (en) | Quick quasi-continuous multi-spectral imaging system and imaging method thereof | |
| US20130321806A1 (en) | Image mapped spectropolarimetry | |
| CN103196889A (en) | Portable raman spectrometer based on spectral analysis of micro electro mechanical system | |
| WO2014123613A1 (en) | Plasmonic projected diffraction sensor | |
| CN104155002B (en) | Scanning imagery spectrometer system | |
| TWI794686B (en) | Fluorescence imaging of gemstone on transparent stage | |
| CN203275287U (en) | Portable optical filter color wheel type multispectral imaging system | |
| CN102226718A (en) | Acousto-optic polarization spectroscopy camera | |
| CN108332853A (en) | A kind of vehicle-mounted 360 degree of panorama target identification systems based on spectrum | |
| CN214374364U (en) | Defect detection device based on optical imaging | |
| CN208171443U (en) | A kind of hyperspectral imager device of Wavelength tunable | |
| CN202189010U (en) | Optical detection system for spectrophotometer of automatic biochemical analyzer | |
| CN115901722A (en) | Raman spectrometer | |
| CN106128514B (en) | Laser fusion target states of matter information multiaxis measuring system | |
| JP3365474B2 (en) | Polarizing imaging device | |
| CN107356333A (en) | An infrared spectrum polarization imaging system and its parameter optimization configuration method | |
| CN101076867A (en) | Total internal reflection fluorescent (TIRF) microscope | |
| US20070171409A1 (en) | Method and apparatus for dense spectrum unmixing and image reconstruction of a sample | |
| CN107782448B (en) | Novel imaging spectrometer and construction method of data cube thereof | |
| CN207923289U (en) | A kind of wide spectrum imaging system for historical relic in-situ scanning | |
| CN105511096A (en) | A single-input four-camera real-time polarization imaging system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |