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Xu Zhang^1,2, Bo Li¹, Xue Jiang¹

¹Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.

Sensors (Basel, Switzerland)

|June 10, 2023

概括

这项研究引入了使用InGaAs探测器的新成像光谱仪设计,实现了广泛的400-1750nm光谱范围. 创新的设计纠正了色谱偏差,使微型化和更容易安装可见光和近红外光谱学.

科学领域:

光学工程是指光学工程.
频谱学是一种光谱学.
探测器技术探测器技术

背景情况:

背面照明的印化 (InGaAs) 探测器的进步使得更广泛的光谱范围 (400-1800 nm) 能够具有高量子效率.
与新兴的InGaAs技术相比,传统探测器 (HgCdTe,CCD,CMOS) 在光谱覆盖和效率方面存在局限性.
在成像光谱仪中,更广泛的光谱范围带来了诸如轴向色态偏差,二次光谱和光轴对齐等挑战.

研究的目的:

设计一个宽光谱范围 (400-1750纳米) 传输镜格成像光谱仪.
在光谱仪内解决和纠正轴性色差偏差和二次光谱.
为了确保系统光学轴垂直于探测器平面,以简化安装后的调整.

主要方法:

使用Code V光学设计软件用于系统设计和分析.
通过选择合适的光学玻璃材料,应用了色态偏差校正理论.
实施了一个设计过程,重点是纠正轴向色差偏差和二次光谱.

主要成果:

在400-1750nm范围内达到5nm的光谱分辨率.
在整个视野中展示了一个根-平均-平方点图<8μm.
在30 lp/mm时获得了光学传输函数 (MTF) > 0.6
设计了一个尺寸小于90毫米的紧系统.
采用球形镜头来降低制造成本和复杂性.

结论:

成功设计了一种宽光谱范围成像光谱仪 (400-1750纳米),克服了传统设计的局限性.
拟议的色差偏差校正方法可确保高光谱分辨率和图像质量.
采用球形镜头的微型设计为可见光和近红外光谱学提供了具有成本效益,易于安装的解决方案.

关键词:

无色色的无色色的影像谱仪的成像谱仪.迷你化的迷你化二次频谱中的二次频谱.宽频带宽频谱带的使用.

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