Design of an improved Offner spectrometer for crop fluorescence detection

doi:10.37188/CO.2021-0073

CIOMP OpenIR

	Design of an improved Offner spectrometer for crop fluorescence detection
	J.-Z. Fan; B. Li; L. Zhang and Y.-F. Ju
	2021
发表期刊	Chinese Optics
ISSN	20951531
卷号	14 期号:6 页码:1459-1467
摘要	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 m. The proposed system can meet the requirements of highly precise real-time monitoring in crop growth chlorophyll detection. 2021, China Science Publishing & Media LTD. All right reserved.
DOI	10.37188/CO.2021-0073
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收录类别	EI
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65154
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	J.-Z. Fan,B. Li,L. Zhang and Y.-F. Ju. Design of an improved Offner spectrometer for crop fluorescence detection[J]. Chinese Optics,2021,14(6):1459-1467.
APA	J.-Z. Fan,B. Li,&L. Zhang and Y.-F. Ju.(2021).Design of an improved Offner spectrometer for crop fluorescence detection.Chinese Optics,14(6),1459-1467.
MLA	J.-Z. Fan,et al."Design of an improved Offner spectrometer for crop fluorescence detection".Chinese Optics 14.6(2021):1459-1467.

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