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Alternative TitleFreeform lens for two beam collimating of a spectrometer source
王晓朵; 刘华; 李云鹏; 全向前; 卢振武
Source Publication光子学报
Indexed ByEI ; CSCD
EI Accession number20163402737295
Contribution Rank1
Funding Organization国家自然科学基金(No.61137001)和吉林省中青年科技创新领军人才及团队项目(20160519021JH)资助
Keyword近红外光谱仪 自由曲面 双光束准直 偏微分方程组 荣格库塔法
Other AbstractTo extend the working spectral range of spectrometer while keeping the resolution the same, a freeform lens is designed, which can collimate the broadband source light into two beams with different wavelengths in different direction, to achieve the spectrum-fold on a two dimension array detector. First of all, a first-order partial differential equations set is obtained according to the vector relationship between the incident rays and the refractive rays on the freeform surface. Then Runge-Kutta methods is adopted to get the numerical solution of the partial differential equations which are the discrete points of the freeform surface, and the freeform lens is constructed by CAD software. The two beam collimating of the source is simulated in ZEMAX software, and the irradiance maps of the two collimated beams are simulated in Tracepro software. Finally, the freeform lens is applied to a spectrometer to collimate a source with wavelength ranging from 800 nm to 2400 nm into two beams with wavelength from 800 nm to 1600 nm and from 1600 nm to 2400 nm in different direction. After being dispersed by one grating and focused by imaging lens, two paralle and end to end spectra are distributed in the detector, and the spectral resolution is better than 10nm. The simulation results shows that, by using this kind of freeform lens, both high resolution and wide working wavelength range can be achieved in one spectrometer, and the structure of the spectrometer becomes much more compact.
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author刘华
Recommended Citation
GB/T 7714
王晓朵,刘华,李云鹏,等. 光谱仪光源双光束准直的自由曲面透镜[J]. 光子学报,2016,45(8):38-43.
APA 王晓朵,刘华,李云鹏,全向前,&卢振武.(2016).光谱仪光源双光束准直的自由曲面透镜.光子学报,45(8),38-43.
MLA 王晓朵,et al."光谱仪光源双光束准直的自由曲面透镜".光子学报 45.8(2016):38-43.
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