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紧的数值光圈0.5光纤光谱仪设计使用主动图像平面倾斜.

Pinliang Yue1,2, Mingyu Yang1, Qingbin Jiao1

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

Sensors (Basel, Switzerland)
|June 27, 2024
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概括

这项研究引入了一种新的方法,通过倾斜图像平面来设计高数值孔径 (NA) 光谱仪. 这简化了大光圈聚焦镜头的设计,使光纤光谱仪能够增强弱信号检测.

关键词:
这是一种无色化症 (achromatism).纤维光谱仪的光纤光谱仪.高的NA高的NA图像平面倾斜图像平面倾斜

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科学领域:

  • 光学工程是指光学工程.
  • 频谱学是一种光谱学.
  • 仪器设计 仪器设计

背景情况:

  • 高数值光圈 (NA) 对于光谱仪中微弱信号的敏感检测至关重要.
  • 基于传输镜头的传统光谱仪在设计用于超高NA的大光圈聚焦镜头时面临着挑战.
  • 现有的设计受限于难以实现大的NA和材料限制.

研究的目的:

  • 提出一种设计高NA光谱仪的简化方法.
  • 为了克服与大光圈聚焦镜头设计相关的挑战.
  • 为了提高光纤光谱仪的灵敏度和光谱分辨率.

主要方法:

  • 在大光圈聚焦镜头的设计过程中引入图像平面倾斜.
  • 分析对聚焦镜头的特定需求,包括色差和单色偏差.
  • 使用光纤光谱仪设计,以NA 0.5作为示范.

主要成果:

  • 拟议的方法简化了高NA光谱仪设计过程.
  • 一个具有图像平面倾斜的聚焦镜头表现出对色差和单色偏差的需求减少,促进更高的NA.
  • 一个NA 0.5光纤光谱仪成功设计,使用两种材料的四个镜头.
  • 获得了6.5nm的光谱分辨率,光谱采样比为2:1.

结论:

  • 图像平面倾斜方法提供了一种可行的方法来简化高NA光谱仪的设计.
  • 这种技术对于材料选择有限且需要高灵敏度的应用是有益的.
  • 开发的方法为提高光谱仪性能提供了实际参考.