技术领域technical field
本发明涉及光谱测量领域，具体涉及一种宽波段太阳光谱辐照度监测装置。The invention relates to the field of spectrum measurement, in particular to a broadband solar spectrum irradiance monitoring device.
背景技术Background technique
目前，太阳光谱辐照度监测仪有NASA航天飞机的SOLSPEC仪器系列，美国的SORCE任务，以及正在研究的美国的CLARREO项目以及欧空局的TRUTHS计划的相关仪器。与本设计最接近的是欧空局的TRUTHS计划的相关仪器，其结构如图1所示，主要由积分球1、入射狭缝2、球面准直反射镜3、平面光栅4、球面聚焦反射镜5、分束器6和第一线阵探测器7、第二线阵探测器8组成。积分球1入口与两入射狭缝2分别位于以积分球1为中心的三维坐标轴与积分球1交点处。光由积分球1入口入射，经两入射狭缝2出射，并将全波段分为双通道进行分光。在每一个通道，均采用切尔尼特纳系统，即入射狭缝2出射的光经球面准直反射镜3出射为平行光，经过平面光栅4一、二级衍射产生色散，再经过球面聚焦反射镜5将其会聚成像，分束器6根据波长将光束分为两部分，第一线阵探测器7、第二线阵探测器8分别位于两部分光的像面位置。At present, the solar spectrum irradiance monitors include the SOLSPEC instrument series of the NASA space shuttle, the SORCE mission of the United States, and related instruments of the CLARREO project of the United States and the TRUTHS plan of the European Space Agency. The closest to this design is the relevant instrument of ESA’s TRUTHS program. Its structure is shown in Figure 1. It mainly consists of integrating sphere 1, incident slit 2, spherical collimating mirror 3, planar grating 4, and spherical focusing reflector. Mirror 5, beam splitter 6, first linear array detector 7, second linear array detector 8. The entrance of the integrating sphere 1 and the two incident slits 2 are respectively located at the intersections of the three-dimensional coordinate axes centered on the integrating sphere 1 and the integrating sphere 1 . The light is incident from the entrance of the integrating sphere 1, exits through two incident slits 2, and divides the whole wavelength band into two channels for light splitting. In each channel, the Czerny Turner system is adopted, that is, the light emitted from the incident slit 2 is emitted as parallel light through the spherical collimating mirror 3, and then undergoes first and second order diffraction of the plane grating 4 to generate dispersion, and then undergoes spherical focusing The mirror 5 converges the beam into an image, the beam splitter 6 divides the beam into two parts according to the wavelength, and the first line detector 7 and the second line detector 8 are respectively located at the image plane positions of the two parts of light.
上述系统中，两通道光谱范围分别为200-800nm和650-2500nm。对应两个通道四块线阵探测器探测范围分别为200-400nm、400-800nm、650-1300nm、1300-2500nm。光谱分辨率在200-1000nm波段为0.5nm，在1000-2500nm波段为1nm。如果按照上述波段划分，则1300-2500nm波段要达到1nm的光谱分辨率要求，则需要一块至少包含1200像元数的线阵探测器，而在这个光谱范围内，线阵探测器目前所能达到的仅仅是512像元数。In the above system, the spectral ranges of the two channels are 200-800nm and 650-2500nm respectively. The detection ranges of the four linear array detectors corresponding to the two channels are 200-400nm, 400-800nm, 650-1300nm, and 1300-2500nm. The spectral resolution is 0.5nm in the 200-1000nm band and 1nm in the 1000-2500nm band. If divided according to the above bands, to meet the spectral resolution requirement of 1nm in the 1300-2500nm band, a linear array detector containing at least 1200 pixels is required, and in this spectral range, the linear array detector can currently achieve The number of pixels is only 512.
另外，在切尔尼特纳系统中，由于像差的影响，宽光谱范围和高光谱分辨率难以在大相对孔径条件下同时获得。当该系统应用于太阳光谱辐照度监测时，由于太阳光谱范围宽，在确定线色散的条件下，增大相对孔径会增大以球差慧差为主的各项像差，导致光谱分辨率下降，并影响像面上的能量分布，进而影响测量太阳光谱辐照度的准确性。In addition, in the Czerny Turner system, due to the influence of aberrations, it is difficult to simultaneously obtain a wide spectral range and high spectral resolution under the condition of a large relative aperture. When the system is applied to the monitoring of solar spectral irradiance, due to the wide range of the solar spectrum, under the condition of determining the linear dispersion, increasing the relative aperture will increase the various aberrations mainly spherical aberration and coma, resulting in spectral resolution The rate decreases and affects the energy distribution on the image plane, which in turn affects the accuracy of measuring solar spectral irradiance.
因此，如何利用现有线阵探测器以保证光谱分辨率以及如何在大相对孔径条件下协调宽光谱范围和高光谱分辨率是太阳光谱辐照度测量中需要解决的问题。Therefore, how to use the existing linear array detectors to ensure the spectral resolution and how to coordinate the wide spectral range and high spectral resolution under the condition of large relative aperture are the problems that need to be solved in the measurement of solar spectral irradiance.
发明内容Contents of the invention
为了解决现有太阳光谱辐照度监测装置，无法利用现有线阵探测器实现目标光谱分辨率的问题，以及切尔尼特纳系统在宽光谱范围内大相对孔径条件下，像差严重、光谱分辨率低的问题，本发明提供一种太阳光谱辐照度监测装置。In order to solve the problem that the existing solar spectral irradiance monitoring device cannot use the existing linear array detector to achieve the target spectral resolution, and the Cherni Turner system has serious aberrations and poor spectral resolution under the condition of large relative aperture in a wide spectral range To solve the problem of low resolution, the present invention provides a solar spectrum irradiance monitoring device.
一种宽波段太阳光谱辐照度监测装置，该装置为三通道并列拼接组成，每一通道包括；积分球、入射狭缝、主反射镜、凸面光栅、次反射镜、分束器、第一线阵探测器和第二线阵探测器，积分球置于整个光路的最前端，积分球入口与入射狭缝分别位于以球心为坐标原点的二维坐标轴与积分球表面交点处，入射狭缝出射的光经主反射镜变为会聚光，所述会聚光经过凸面光栅反射发生一、二级衍射，衍射光经次反射镜反射后经过分束器分为两束光，所述两束光分别在第一线阵探测器和第二线阵探测器上成像。A wide-band solar spectrum irradiance monitoring device, the device is composed of three channels spliced side by side, each channel includes; integrating sphere, incident slit, primary reflector, convex grating, secondary reflector, beam splitter, first For the linear array detector and the second linear array detector, the integrating sphere is placed at the forefront of the entire optical path. The light emitted from the slit becomes converging light through the main reflector, and the converging light undergoes primary and secondary diffraction after being reflected by the convex grating, and the diffracted light is divided into two beams after being reflected by the secondary reflector, and the two beams The light is imaged on the first line detector and the second line detector respectively.
本发明的有益效果：采用三通道，每通道单独配有积分球，可提高进入分光系统的光能量。六块线阵探测器的结构，并且谱段根据现有线阵探测器规格划分，可实现利用现有线阵探测器达到高光谱分辨率的要求。实现宽波段、高分辨率、全谱瞬态直读的太阳光谱辐照度监测。采用高衍射效率的凸面光栅，凸面面型对系统中产生的像差进行补偿，相比利用平面光栅的切尔尼特纳系统，经过优化可以更好的抑制各类像差，实现大相对孔径，高信噪比系统。结构简单可靠，无活动部件。The beneficial effect of the present invention is that three channels are adopted, and each channel is equipped with an integrating sphere separately, which can increase the light energy entering the spectroscopic system. The structure of six linear array detectors, and the division of spectral segments according to the specifications of existing linear array detectors, can meet the requirements of using existing linear array detectors to achieve high spectral resolution. Realize wide-band, high-resolution, full-spectrum transient direct-reading solar spectrum irradiance monitoring. Using a convex grating with high diffraction efficiency, the convex surface compensates the aberrations generated in the system. Compared with the Czerny Turner system using a planar grating, it can better suppress various aberrations and achieve a large relative aperture after optimization. , high signal-to-noise ratio system. Simple and reliable structure, no moving parts.
附图说明Description of drawings
图1为现有TRUTHS计划中太阳光谱辐照度监测仪的整体结构示意图；Figure 1 is a schematic diagram of the overall structure of the solar spectrum irradiance monitor in the existing TRUTHS program;
图2为本发明的整体结构示意图；Fig. 2 is the overall structure schematic diagram of the present invention;
图3为现有切尔尼特纳系统分光光路结构示意图；Fig. 3 is the structural schematic diagram of the light splitting light path of the existing Cherni Turner system;
图4为本发明单一通道的分光光路剖视图。Fig. 4 is a sectional view of the splitting light path of a single channel of the present invention.
具体实施方式detailed description
具体实施方式一、结合图2和图4说明本实施方式，一种宽波段太阳光谱辐照度监测装置，由三通道并列拼接组成，每一个通道，对不同光谱范围进行分光，光谱范围分别是第一通道为400-800nm的一级光谱和200-400nm的二级光谱；第二通道为1200-2000nm的一级光谱和600-1000nm的二级光谱；第三通道为2000-2500nm的一级光谱和1000-1250nm的二级光谱。在每一个通道内，入射的太阳光经过积分球1后通过积分球1表面的狭缝出射，积分球1入口与入射狭缝2分别位于以球心为坐标原点的二维坐标轴与积分球表面交点处。结合图4，入射狭缝1出射的光经过主反射镜9反射为会聚光，其主光线离轴角为2α，主光线以入射角i射向凸面光栅10，经过凸面光栅10发生一、二级衍射，变为不同波长衍射角不同的发散光，发散光经过次反射镜11将其会聚成像，经过次反射镜11的中心波长光线离轴角为2β，次反射镜11反射的光经过分束器6分为两部分，分别入射第一线阵探测器7和第二线阵探测器8并成像。上述过程中，半离轴角α通常为5°～8°，入射角i通常为-5°～-12°，离轴角β通常为10°～18°。Specific Embodiments 1. This embodiment is described in conjunction with Fig. 2 and Fig. 4. A wide-band solar spectrum irradiance monitoring device is composed of three channels spliced side by side. Each channel splits light into different spectral ranges. The spectral ranges are respectively The first channel is the primary spectrum of 400-800nm and the secondary spectrum of 200-400nm; the second channel is the primary spectrum of 1200-2000nm and the secondary spectrum of 600-1000nm; the third channel is the primary spectrum of 2000-2500nm spectrum and secondary spectrum from 1000-1250nm. In each channel, the incident sunlight passes through the integrating sphere 1 and exits through the slit on the surface of the integrating sphere 1. surface intersection. Referring to Fig. 4, the light emitted from the incident slit 1 is reflected by the main reflector 9 as converging light. order diffraction, and become divergent light with different wavelengths and different diffraction angles. The divergent light passes through the sub-reflector 11 and converges it into an image. The off-axis angle of the central wavelength light passing through the sub-reflector 11 is 2β. The beamer 6 is divided into two parts, which are respectively incident on the first line array detector 7 and the second line array detector 8 and imaged. In the above process, the semi-off-axis angle α is usually 5°-8°, the incident angle i is usually -5°--12°, and the off-axis angle β is usually 10°-18°.
本实施方式所述的积分球1的作用是使进入积分球的光均匀出射，排除太阳光入射角度不同而引起的误差，用于该太阳光谱辐照度监测装置定标。入射狭缝2的作用是限制进入的光通量大小，其宽度决定光学系统的分辨率，要求光谱分辨率在200-1000nm为0.5nm，在1000-2500nm为1nm，现有线阵探测器像元宽度主要有25微米和50微米两种，根据采样定理，则可选择的狭缝宽度即为50微米和100微米，又因为当狭缝宽度为100微米时难以达到上述分辨率，且谱面尺寸过长，无法找到合适线阵探测器接收全光谱，因此综合考虑光谱分辨率的要求及现有线阵探测器的规格，狭缝宽度选择为50微米。The function of the integrating sphere 1 described in this embodiment is to make the light entering the integrating sphere exit uniformly, eliminate errors caused by different incident angles of sunlight, and be used for calibration of the solar spectrum irradiance monitoring device. The function of the entrance slit 2 is to limit the incoming luminous flux, and its width determines the resolution of the optical system. The spectral resolution is required to be 0.5nm at 200-1000nm, and 1nm at 1000-2500nm. The pixel width of the existing linear array detector is mainly There are two types of 25 microns and 50 microns. According to the sampling theorem, the selectable slit widths are 50 microns and 100 microns, and because it is difficult to achieve the above resolution when the slit width is 100 microns, and the spectrum size is too long , it is impossible to find a suitable linear array detector to receive the full spectrum. Therefore, considering the requirements of spectral resolution and the specifications of the existing linear array detector, the slit width is selected as 50 microns.
本实施方式所述的主反射镜9的作用是将通过入射狭缝2进入的光束会聚并反射到凸面光栅10上，主反射镜9的面型为凹球面。所述的凸面光栅10的作用是将入射的复色光根据波长分成具有不同衍射角的光束组。凸面光栅10可以通过优化曲率半径减少像差，提高系统光谱分辨率。凸面光栅10选用离子束刻蚀凸面光栅，本实施方式同时利用光的一级衍射和二级衍射，对应到三个通道为：第一通道为400-800nm的一级衍射和200-400nm的二级衍射；第二通道为1200-2000nm的一级衍射和600-1000nm的二级衍射；第三通道为2000-2500nm的一级衍射和1000-1250nm的二级衍射。其中波长为λ的二级衍射光束位置与波长为2λ的一级衍射光束位置重合，所述的次反射镜11的作用是将经过凸面光栅10分出的发散光束组聚焦，次反射镜11的面型为凹球面。The function of the main reflector 9 in this embodiment is to converge and reflect the beam entering through the incident slit 2 onto the convex grating 10 , and the surface of the main reflector 9 is a concave spherical surface. The function of the convex grating 10 is to divide the incident polychromatic light into beam groups with different diffraction angles according to the wavelength. The convex grating 10 can reduce aberrations and improve the spectral resolution of the system by optimizing the radius of curvature. Convex grating 10 adopts ion beam etching convex grating, this embodiment utilizes the first-order diffraction and second-order diffraction of light at the same time, corresponding to three channels: the first channel is the first-order diffraction of 400-800nm and the second-order diffraction of 200-400nm The second channel is the first-order diffraction of 1200-2000nm and the second-order diffraction of 600-1000nm; the third channel is the first-order diffraction of 2000-2500nm and the second-order diffraction of 1000-1250nm. Wherein the position of the second-order diffracted beam whose wavelength is λ coincides with the position of the first-order diffracted beam whose wavelength is 2λ. The surface type is concave spherical.
本实施方式所述的分束器6作用是将位置重合的一级光谱和二级光谱分开，因此三个通道的分束器的分光波长范围选择为第一通道400-800nm的光透射200-400nm的光反射；第二通道1200-2000nm的光透射600-1000nm的光反射；第三通道2000-2500nm的光透射1000-1250nm的光反射。第一线阵探测器7和第二线阵探测器8作用是接收光谱图像，并实现全光谱直读。在200-1000nm波段选用CCD，在1000nm-2500nm波段选用InGaAs。因为入射狭缝宽度为50微米，则根据采样定理选用像元宽度为25微米。The function of the beam splitter 6 described in this embodiment is to separate the overlapping primary spectrum and secondary spectrum. Therefore, the splitting wavelength range of the beam splitter of the three channels is selected as the first channel 400-800nm light transmission 200- 400nm light reflection; second channel 1200-2000nm light transmission 600-1000nm light reflection; third channel 2000-2500nm light transmission 1000-1250nm light reflection. The function of the first line array detector 7 and the second line array detector 8 is to receive spectral images and realize full spectrum direct reading. CCD is selected in the 200-1000nm wave band, and InGaAs is used in the 1000nm-2500nm wave band. Because the width of the incident slit is 50 microns, the pixel width is selected as 25 microns according to the sampling theorem.
具体实施方式二、本实施方式为具体实施方式一所述的一种宽波段太阳光谱辐照度监测装置的应用实施例：Embodiment 2. This embodiment is an application example of a broadband solar spectrum irradiance monitoring device described in Embodiment 1:
针对200nm-800nm通道设计太阳光谱辐照度监测仪，选择600线对/毫米的凸面光栅，凸面光栅曲率半径为170.58mm，主反射镜凹面曲率为319.53mm，次反射镜凹面曲率为319.52mm。半离轴角α设定为6°，凸面光栅入射角i设为-11°，半离轴角β设为15.43°。狭缝宽度设为50微米，线阵探测器选取为两块滨松的一款含有2048像元，像元尺寸为25μm×2.5mm线阵CCD。The solar spectrum irradiance monitor is designed for the 200nm-800nm channel, and the convex grating with 600 line pairs/mm is selected. The curvature radius of the convex grating is 170.58mm, the concave curvature of the primary reflector is 319.53mm, and the concave curvature of the secondary reflector is 319.52mm. The semi-off-axis angle α was set to 6°, the incident angle i of the convex grating was set to -11°, and the semi-off-axis angle β was set to 15.43°. The slit width is set to 50 microns, and the linear array detector is selected as two Hamamatsu ones with 2048 pixels, and the pixel size is 25 μm×2.5mm linear array CCD.
上述设计的太阳光谱辐照度监测仪，可以在400nm-800nm波段获得光谱分辨率为0.49nm，在200nm-400nm波段获得光谱分辨率为0.25nm，且光学系统的全波段截止频率处调制传递函数大于0.85，全波段最大弥散斑均方根半径小于像元宽度的1/6，最大谱线弯曲为50ppm。The solar spectral irradiance monitor designed above can obtain a spectral resolution of 0.49nm in the 400nm-800nm band, and a spectral resolution of 0.25nm in the 200nm-400nm band, and the modulation transfer function at the full-band cut-off frequency of the optical system Greater than 0.85, the root mean square radius of the maximum diffuse spot in the whole band is less than 1/6 of the pixel width, and the maximum spectral line bending is 50ppm.
本实施方式中改变半离轴角α为8°，经过优化计算获得凸面光栅曲率半径为170.66mm，主反射镜凹面曲率为319.61mm，次反射镜凹面曲率为319.54mm。半离轴角β为14.19°。此时在400nm-800nm波段获得光谱分辨率为0.47nm，在200nm-400nm波段获得光谱分辨率为0.24nm，且光学系统的全波段截止频率处调制传递函数大于0.7，全波段最大弥散斑均方根半径小于像元宽度的1/6，最大谱线弯曲为50ppm。In this embodiment, the semi-off-axis angle α is changed to 8°, and the radius of curvature of the convex grating is 170.66 mm, the curvature of the concave surface of the primary reflector is 319.61 mm, and the curvature of the concave surface of the secondary reflector is 319.54 mm. The semi-off-axis angle β is 14.19°. At this time, the spectral resolution obtained in the 400nm-800nm band is 0.47nm, and the spectral resolution obtained in the 200nm-400nm band is 0.24nm, and the modulation transfer function at the full-band cut-off frequency of the optical system is greater than 0.7, and the full-band maximum diffuse spot mean square The root radius is less than 1/6 of the pixel width, and the maximum spectral line bending is 50ppm.
具体实施方式三、本实施方式为具体实施方式一所述的一种宽波段太阳光谱辐照度监测装置的应用实施例：Specific embodiment three. This embodiment is an application example of a broadband solar spectrum irradiance monitoring device described in specific embodiment one:
针对600nm-1000nm及1200nm-2000nm通道设计太阳光谱辐照度监测仪，选择300线对/毫米的凸面光栅，凸面光栅曲率半径为169.21mm，主反射镜凹面曲率为312.80mm，次反射镜凹面曲率为313.73mm。半离轴角α设定为6°，光栅入射角i设为-5°，半离轴角β设为14.76°。入射狭缝的宽度设为50微米，线阵探测器选取为古德里奇的一款含有1024像元，像元尺寸为50μm×2.5mm线阵CCD和滨松的一款含有2048像元，像元尺寸为25μm×2.5mm线阵CCD。Design a solar spectrum irradiance monitor for 600nm-1000nm and 1200nm-2000nm channels, choose a convex grating with 300 line pairs/mm, the radius of curvature of the convex grating is 169.21mm, the curvature of the concave surface of the primary reflector is 312.80mm, and the curvature of the concave surface of the secondary reflector It is 313.73mm. The semi-off-axis angle α was set to 6°, the grating incident angle i was set to -5°, and the semi-off-axis angle β was set to 14.76°. The width of the incident slit is set to 50 microns, the linear array detector is selected as Goodrich’s one with 1024 pixels, and the pixel size is 50 μm×2.5mm linear array CCD and Hamamatsu’s one with 2048 pixels, like The cell size is 25μm×2.5mm linear array CCD.
上述设计的太阳光谱辐照度监测仪，可以在1200nm-2000nm波段获得光谱分辨率为0.95nm，在600nm-1000nm波段获得光谱分辨率为0.48nm，且光学系统的全波段截止频率处调制传递函数大于0.7，接近衍射极限。全波段最大弥散斑均方根半径小于像元宽度的1/8，远低于衍射极限。最大谱线弯曲为1/1000。The solar spectral irradiance monitor designed above can obtain a spectral resolution of 0.95nm in the 1200nm-2000nm band, and a spectral resolution of 0.48nm in the 600nm-1000nm band, and the modulation transfer function at the full-band cut-off frequency of the optical system Greater than 0.7, close to the diffraction limit. The root mean square radius of the maximum diffuse spot in the whole band is less than 1/8 of the pixel width, which is far below the diffraction limit. The maximum line bending is 1/1000.
通过改变本实施方式中的光栅入射角i为-11°，经过优化计算获得凸面光栅曲率半径为168.74mm，主反射镜凹面曲率为305.27mm，次反射镜凹面曲率为314.85mm。半离轴角β为18.38°。此时在1200nm-2000nm波段获得光谱分辨率为0.92nm，在600nm-1000nm波段获得光谱分辨率为0.46nm，且光学系统的全波段截止频率处调制传递函数大于0.6，全波段最大弥散斑均方根半径小于像元宽度的1/6，最大谱线弯曲为2/1000。By changing the incident angle i of the grating in this embodiment to -11°, the radius of curvature of the convex grating is 168.74mm, the curvature of the concave surface of the primary reflector is 305.27mm, and the curvature of the concave surface of the secondary reflector is 314.85mm. The semi-off-axis angle β is 18.38°. At this time, the spectral resolution obtained in the 1200nm-2000nm band is 0.92nm, and the spectral resolution obtained in the 600nm-1000nm band is 0.46nm, and the modulation transfer function at the full-band cut-off frequency of the optical system is greater than 0.6, and the full-band maximum diffuse spot mean square The root radius is less than 1/6 of the pixel width, and the maximum spectral line bending is 2/1000.
通过改变本实施方式中的半离轴角β为15°，经过优化计算获得凸面光栅曲率半径为167.05mm，主反射镜凹面曲率为315.02mm，次反射镜凹面曲率为308.99mm。光栅入射角i为-10.65°。此时在2000nm-2500nm波段获得光谱分辨率为2nm，在1000nm-1250nm波段获得光谱分辨率为1nm，且光学系统的全波段截止频率处调制传递函数大于0.7，约等于衍射极限。全波段最大弥散斑均方根半径小于像元宽度的1/25，最大谱线弯曲为5/10000。By changing the semi-off-axis angle β in this embodiment to 15°, the radius of curvature of the convex grating is 167.05mm, the curvature of the concave surface of the primary reflector is 315.02mm, and the curvature of the concave surface of the secondary reflector is 308.99mm. The grating incident angle i is -10.65°. At this time, the spectral resolution obtained in the 2000nm-2500nm band is 2nm, and the spectral resolution obtained in the 1000nm-1250nm band is 1nm, and the modulation transfer function at the full-band cutoff frequency of the optical system is greater than 0.7, which is approximately equal to the diffraction limit. The root mean square radius of the maximum diffuse spot in the whole band is less than 1/25 of the pixel width, and the maximum spectral line bending is 5/10000.
具体实施方式四、本实施方式为具体实施方式一所述的一种宽波段太阳光谱辐照度监测装置的应用实施例：Embodiment 4. This embodiment is an application example of a broadband solar spectrum irradiance monitoring device described in Embodiment 1:
针对1000nm-1250nm及2000nm-2500nm通道设计太阳光谱辐照度监测仪，选择150线对/毫米的凸面光栅，凸面光栅曲率半径为175.23mm，主反射镜凹面曲率为318.81mm，次反射镜凹面曲率为318.82mm。半离轴角α设定为5.5°，光栅入射角i设为-7°，半离轴角β设为13.31°。狭缝宽度设为50微米，线阵探测器选取为XENICS的一款含有512像元，像元尺寸为25μm×0.5mm线阵CCD和安道尔的一款含有512像元，像元尺寸为25μm×0.5mm线阵CCD。Design a solar spectrum irradiance monitor for 1000nm-1250nm and 2000nm-2500nm channels, choose a convex grating with 150 line pairs/mm, the radius of curvature of the convex grating is 175.23mm, the curvature of the concave surface of the primary reflector is 318.81mm, and the curvature of the concave surface of the secondary reflector It is 318.82mm. The semi-off-axis angle α was set to 5.5°, the grating incident angle i was set to -7°, and the semi-off-axis angle β was set to 13.31°. The slit width is set to 50 microns, and the linear array detector is selected as a XENICS type with 512 pixels and a pixel size of 25 μm×0.5mm, and a linear array CCD from Andor with 512 pixels and a pixel size of 25 μm ×0.5mm linear array CCD.
上述设计的太阳光谱辐照度监测仪，可以在2000nm-2500nm波段获得光谱分辨率为2nm，在1000nm-1250nm波段获得光谱分辨率为1nm，且光学系统的全波段截止频率处调制传递函数接近0.7，约等于衍射极限。全波段最大弥散斑均方根半径小于像元宽度的1/12，远低于衍射极限。最大谱线弯曲为2/10000。The solar spectral irradiance monitor designed above can obtain a spectral resolution of 2nm in the 2000nm-2500nm band, and a spectral resolution of 1nm in the 1000nm-1250nm band, and the modulation transfer function at the full-band cut-off frequency of the optical system is close to 0.7 , approximately equal to the diffraction limit. The root mean square radius of the maximum diffuse spot in the whole band is less than 1/12 of the pixel width, which is far below the diffraction limit. The maximum line bending is 2/10000.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213203.4ACN103292905B (en) | 2013-05-31 | 2013-05-31 | A kind of broadband solar spectrum irradiancy monitoring device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213203.4ACN103292905B (en) | 2013-05-31 | 2013-05-31 | A kind of broadband solar spectrum irradiancy monitoring device |
| Publication Number | Publication Date |
|---|---|
| CN103292905A CN103292905A (en) | 2013-09-11 |
| CN103292905Btrue CN103292905B (en) | 2016-01-13 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310213203.4AExpired - Fee RelatedCN103292905B (en) | 2013-05-31 | 2013-05-31 | A kind of broadband solar spectrum irradiancy monitoring device |
| Country | Link |
|---|---|
| CN (1) | CN103292905B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441559B (en)* | 2016-09-29 | 2017-11-21 | 山东大学 | Block formula solar halo photometer in side |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997028428A1 (en)* | 1996-02-02 | 1997-08-07 | Abbott Laboratories | Programmable standard for use in an apparatus and process for the noninvasive measurement of optically absorbing compounds |
| WO2006135389A2 (en)* | 2004-08-13 | 2006-12-21 | University Of Pittsburgh | Multi-channel dual phase lock-in optical spectrometer |
| CN102564591A (en)* | 2011-12-29 | 2012-07-11 | 聚光科技(杭州)股份有限公司 | Spectrum analyzer and spectrum analyzing method |
| CN103105284A (en)* | 2013-01-14 | 2013-05-15 | 中国科学院光电技术研究所 | Device and method for measuring transmittance of optical components of illumination system in photoetching machine |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997028428A1 (en)* | 1996-02-02 | 1997-08-07 | Abbott Laboratories | Programmable standard for use in an apparatus and process for the noninvasive measurement of optically absorbing compounds |
| WO2006135389A2 (en)* | 2004-08-13 | 2006-12-21 | University Of Pittsburgh | Multi-channel dual phase lock-in optical spectrometer |
| CN102564591A (en)* | 2011-12-29 | 2012-07-11 | 聚光科技(杭州)股份有限公司 | Spectrum analyzer and spectrum analyzing method |
| CN103105284A (en)* | 2013-01-14 | 2013-05-15 | 中国科学院光电技术研究所 | Device and method for measuring transmittance of optical components of illumination system in photoetching machine |
| Title |
|---|
| Experimental Solar Spectral Irradiance until 2500 nm: Results and Influence on the PV Conversion of Different Materials;J. J. Pe´rez-Lo´pez et al.;《Progress in Photovoltaics: Research and Applications》;20070630;第15卷(第4期);第1149-1159页* |
| Overview of the Earth Observing One (EO-1) Mission;Stephen G. Ungar et al.;《IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING》;20030630;第41卷(第6期);第23-28页* |
| THE SOLAR SPECTRAL IRRADIANCE FROM 200 TO 2400 nm AS MEASURED BY THE SOLSPEC SPECTROMETER FROM THE ATLAS AND EURECA MISSIONS;G. THUILLIER et al.;《Solar Physics》;20030531;第214卷(第1期);第1-22页* |
| 太阳辐照绝对辐射计及其在航天器上的太阳辐照度测量;方伟 等;《中国光学与应用光学》;20090228;第2卷(第1期);第303-315页* |
| 宽光谱棱镜型太阳光谱仪设计;张浩 等;《光学学报》;20130228;第33卷(第2期);第0222001-1至0222001-9页* |
| Publication number | Publication date |
|---|---|
| CN103292905A (en) | 2013-09-11 |
| Publication | Publication Date | Title |
|---|---|---|
| CN103293682A (en) | Light-splitting light path structure of broad-spectrum solar spectral irradiance monitor | |
| CN107728300B (en) | Small reflective off-axis telescopic system with wide view field and large relative aperture | |
| CN103411673B (en) | Imaging spectrometer based on concentric off-axis double reflection systems | |
| CN106441581B (en) | A kind of high-resolution line array CCD direct-reading type spectrometer | |
| US9638635B2 (en) | Spectrometer for analysing the spectrum of a light beam | |
| CN104729708B (en) | Anastigmatic broadband spectrum detection grating spectrometer | |
| CN101963529A (en) | Extreme ultraviolet scanning imaging spectrometer | |
| CN102809428A (en) | Method for adjusting small echelle grating spectrometer | |
| CN104266755B (en) | Spectral measurement method and system for improving luminous flux | |
| CN109974852A (en) | Snapshot Grating Spectrometer | |
| CN103245416A (en) | Hadamard-transform near-infrared spectrograph added with light harvesting structure | |
| WO2021051640A1 (en) | Spectral resolution enhancement device | |
| CN103234987A (en) | Time-resolved multicolor single-energy X-ray imaging spectrometer | |
| US12104948B2 (en) | Optical measurement device with universal metasurface and optical measuring method using the same | |
| CN104568148A (en) | Optical system of atmospheric CO2 hyperspectral imaging spectrometer | |
| CN110926613B (en) | A coma-ablation broadband high-resolution spectrometer | |
| CN103292905B (en) | A kind of broadband solar spectrum irradiancy monitoring device | |
| CN115585887A (en) | Optical system and design method of a Czerny-Turner spectrometer | |
| CN113865705B (en) | Dual-channel optical path system with shared optical path and spectrometer | |
| CN102589692A (en) | Vertical incidence broadband polarization spectrometer for splitting optical fiber bundle and optical measurement system | |
| CN110118602B (en) | Device for simultaneously acquiring broadband high-resolution spectral imaging information | |
| CN110501074A (en) | High-throughput wide-spectrum high-resolution coherent dispersion spectroscopy imaging method and device | |
| CN220104288U (en) | Spectral imaging system with variable spectral resolution | |
| CN108362379B (en) | Wide-spectrum high-resolution spectrum dispersion method and device | |
| CN105954286A (en) | Visibility measuring instrument based on rotary-light-filter monochromator |
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20160113 | |
| CF01 | Termination of patent right due to non-payment of annual fee |