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相关概念视频

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Imaging Biological Samples with Optical Microscopy01:18

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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相关实验视频

Updated: Jul 18, 2025

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
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Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

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通过在线电荷合装置 (CCD) 阵列上的多个数字锁定进行内置光学光谱学.

Hugo Fonsêca1,2, Diego Rativa1,2, Ricardo Lima2

  • 1Department of Computer Engineering, University of Pernambuco, Recife 50720-001, Brazil.

Sensors (Basel, Switzerland)
|August 26, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了CCD光谱仪的数字锁定处理,即使有可变的照明,也可以进行准确的光学测量. 该技术有效地减轻外部干扰,在不受控制的环境中进行可靠的光谱学.

关键词:
这是一个CCD光谱仪.数字锁定式放大器的数字放大器信号处理 信号处理 信号处理

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相关实验视频

Last Updated: Jul 18, 2025

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 频谱学是一种光谱学.
  • 数字信号处理 数字信号处理

背景情况:

  • 精确的光学属性测量对于工业至关重要,但受到外部光的波动挑战.
  • 不受控制的照明条件阻碍了标准光谱技术的可靠性.

研究的目的:

  • 为CCD光谱仪开发一种新的数字锁定处理技术.
  • 在不受控制和波动的照明条件下实现可靠的光学光谱学.

主要方法:

  • 数字锁定处理同时应用于电荷合装置 (CCD) 谱仪的每个像素.
  • 通过同时处理像素级处理来缓解外部光学干扰.

主要成果:

  • 在具有显著外部干扰的室外照明条件下成功恢复黄色LED光谱 (-70.45dB信号与噪声比).
  • 在户外环境中对金纳米颗粒进行光谱分析的应用性得到证明.

结论:

  • 拟议的数字锁定处理技术提高了CCD光谱仪的稳定性.
  • 这种方法对于在具有挑战性的,不受控制的照明环境中的光学测量是有效的,扩大了光谱学应用.