Volume 14 Issue 6
Nov.  2021
Turn off MathJax
Article Contents
FAN Ji-ze, LI Bo, ZHANG Lu, JU Yan-fang. Design of an improved Offner spectrometer for crop fluorescence detection[J]. Chinese Optics, 2021, 14(6): 1459-1467. doi: 10.37188/CO.2021-0073
Citation: FAN Ji-ze, LI Bo, ZHANG Lu, JU Yan-fang. Design of an improved Offner spectrometer for crop fluorescence detection[J]. Chinese Optics, 2021, 14(6): 1459-1467. doi: 10.37188/CO.2021-0073

Design of an improved Offner spectrometer for crop fluorescence detection

doi: 10.37188/CO.2021-0073
Funds:  Supported by National key Research and Development Program of China (No. 62005268)
More Information
  • Corresponding author: libo0008429@163.com
  • Received Date: 2021-04-07
  • Rev Recd Date: 2021-04-29
  • Available Online: 2021-06-26
  • Publish Date: 2021-11-19
  • To monitor crop growth more efficiently, various kinds of hyperspectral spectrometers have been designed to detect chlorophyll fluorescence. In this paper, the traditional Offner spectrometer system is improved, and a structure with a higher spectral resolution is obtained. The double-reflection telescope system is selected, and the spectrometer adopts a highly dense linear reflective convex grating to achieve higher spectral resolution. On this basis, an amplifying lens is added to meet the need for a long slit. An Offner structure is obtained with a slit and image plane on the same side of the grating. The initial structure of the telescope system and the spectrometer are optimized by codeV software. The results show that the spectral resolution is 0.3 nm in the range of 670~780 nm, the overall Modulation Transfer Function (MTF) is greater than 0.75 at the cut-off frequency of 17 lp/mm, and the Root Mean Square radius (RMS) of the speckle is less than 15 μm. The proposed system can meet the requirements of highly precise real-time monitoring in crop growth chlorophyll detection.
  • loading
  • [1]
    杨卫梅, 刘刚, 欧全宏, 等. 红外光谱结合曲线拟合对自然老化豆类种子的研究[J]. 分析化学,2019,47(12):2004-2016.

    YANG W M, LIU G, OU Q H, et al. Study on natural aging legume seeds by infrared spectroscopy combined with curve fitting[J]. Chinese Journal of Analytical Chemistry, 2019, 47(12): 2004-2016. (in Chinese)
    刘亚超, 李永玉, 彭彦昆, 等. 红外漫透射光补偿法无损快速检测大米直链淀粉[J]. 分析化学,2019,47(5):785-793.

    LIU Y C, LI Y Y, PENG Y K, et al. Non-destructive rapid detection of rice amylose content by near-infrared diffuse transmission optical compensation method[J]. Chinese Journal of Analytical Chemistry, 2019, 47(5): 785-793. (in Chinese)
    马文强, 张漫, 李源, 等. 基于高光谱成像的核桃仁品质检测与分类方法[J]. 分析化学,2020,48(12):1737-1746.

    MA W Q, ZHANG M, LI Y, et al. Detection and grading method of walnut kernel quality based on hyperspectral image[J]. Chinese Journal of Analytical Chemistry, 2020, 48(12): 1737-1746. (in Chinese)
    王恒. 应用于植物生理检测的高通量叶绿素荧光成像系统研究[D]. 杭州: 浙江大学, 2018.

    WANG H. Research on high throughput chlorophyll fluorescence imaging system applied in plant physiology detection[D]. Hangzhou: Zhejiang University, 2018.
    TOPPING M Q, PFEIFFER J E, SPARKS A W, et al. Advanced airborne hyperspectral imaging system (AAHIS)[J]. Proceedings of SPIE, 2002, 4816: 1-11. doi: 10.1117/12.453794
    COPPO P, PETTINATO L, NUZZI D, et al. Instrument predevelopment activities for FLEX mission[J]. Optical Engineering, 2019, 58(7): 075102.
    付严宇, 杨桄, 关世豪. 航空航天高光谱成像仪研究现状及发展趋势[J]. 红外,2020,41(8):1-8, 14. doi: 10.3969/j.issn.1672-8785.2020.08.001

    FU Y Y, YANG G, GUAN SH H. Research status and development trend of hyperspectral imagers onboard airborne and spaceborne platforms[J]. Infrared, 2020, 41(8): 1-8, 14. (in Chinese) doi: 10.3969/j.issn.1672-8785.2020.08.001
    刘玉娟, 崔继承, 巴音贺希格, 等. 凸面光栅成像光谱仪的研制与应用[J]. 光学 精密工程,2012,20(1):52-57. doi: 10.3788/OPE.20122001.0052

    LIU Y J, CUI J CH, BAYANHESHIG, et al. Design and application of imaging spectro meter with convex grating[J]. Optics and Precision Engineering, 2012, 20(1): 52-57. (in Chinese) doi: 10.3788/OPE.20122001.0052
    朱雨霁, 尹达一, 陈永和, 等. 高光谱分辨率紫外Offner成像光谱仪系统设计[J]. 光学学报,2018,38(2):0222001. doi: 10.3788/AOS201838.0222001

    ZHU Y J, YIN D Y, CHEN Y H, et al. Design of hyperspectral resolution ultraviolet Offner imaging spectrometer system[J]. Acta Optica Sinica, 2018, 38(2): 0222001. (in Chinese) doi: 10.3788/AOS201838.0222001
    朱嘉诚, 沈为民. 紧凑型消像散长狭缝光谱仪光学系统[J]. 红外与毫米波学报,2019,38(4):542-548. doi: 10.11972/j.issn.1001-9014.2019.04.022

    ZHU J CH, SHEN W M. Compact anastigmatic long-slit spectrometer[J]. Journal of Infrared and Millimeter Waves, 2019, 38(4): 542-548. (in Chinese) doi: 10.11972/j.issn.1001-9014.2019.04.022
    徐达, 张国玉, 孙高飞. 改进Offner型凸面光栅光谱辐射定标光学系统设计[J]. 光学学报,2020,40(8):0822002. doi: 10.3788/AOS202040.0822002

    XU D, ZHANG G Y, SUN G F. Design of advanced Offner-type convex grating spectral radiation calibration optical system[J]. Acta Optica Sinica, 2020, 40(8): 0822002. (in Chinese) doi: 10.3788/AOS202040.0822002
    周正平, 赵知诚, 靳阳明, 等. 大相对孔径宽视场无遮拦平场两反射镜望远物镜分析与设计[J]. 光学学报,2015,35(3):0322002. doi: 10.3788/AOS201535.0322002

    ZHOU ZH P, ZHAO ZH CH, JIN Y M, et al. Analysis and design of unobscured flat-field two-mirror telescopic objective with wide field of view and large relative aperture[J]. Acta Optica Sinica, 2015, 35(3): 0322002. (in Chinese) doi: 10.3788/AOS201535.0322002
    杨拓拓, 陈新华, 赵知诚, 等. Offner分光成像系统的球面自准直法快速装调[J]. 中国光学,2020,13(6):1324-1331. doi: 10.37188/CO.2020-0058

    YANG T T, CHEN X H, ZHAO ZH CH, et al. Fast alignment of an offner imaging spectrometer using a spherical autostigmatic method[J]. Chinese Optics, 2020, 13(6): 1324-1331. (in Chinese) doi: 10.37188/CO.2020-0058
    兰卫华, 王欣, 刘银年, 等. 凸面光栅的衍射效率计算及其二级光谱抑制[J]. 红外技术,2009,31(5):256-258. doi: 10.3969/j.issn.1001-8891.2009.05.003

    LAN W H, WANG X, LIU Y N, et al. The convex grating diffractive efficiency calculating and second diffraction suppression[J]. Infrared Technology, 2009, 31(5): 256-258. (in Chinese) doi: 10.3969/j.issn.1001-8891.2009.05.003
    徐达, 岳世新, 张国玉, 等. Offner型凸面光栅宽动态范围辐射定标光源设计[J]. 中国光学,2020,13(5):1085-1093. doi: 10.37188/CO.2019-0221

    XU D, YUE SH X, ZHANG G Y, et al. Design of an Offner convex grating radiation calibration light source with a wide dynamic range[J]. Chinese Optics, 2020, 13(5): 1085-1093. (in Chinese) doi: 10.37188/CO.2019-0221
    陈醒, 胡春晖, 颜昌翔, 等. 大视场空间可见光相机的杂散光分析与抑制[J]. 中国光学,2019,12(3):678-685. doi: 10.3788/co.20191203.0678

    CHEN X, HU CH H, YAN CH X, et al. Analysis and suppression of space stray light of visible cameras with wide field of view[J]. Chinese Optics, 2019, 12(3): 678-685. (in Chinese) doi: 10.3788/co.20191203.0678
  • 加载中


    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(14)  / Tables(2)

    Article views (300) PDF downloads(36) Cited by()
    Proportional views


    DownLoad:  Full-Size Img  PowerPoint