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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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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: May 21, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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适应式无透镜显微镜成像,未知相位调制.

Xiangyu Chen1, Hao Sha1, Chunyu Chen2

  • 1School of Computer Science and Technology, Harbin Institute of Technology, Shenzhen, Guangdong 518055, China.

Biomedical optics express
|March 20, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的无透镜成像技术,使用空间光调制器 (SLM) 和螺旋扫描. 该方法克服了传统方法的局限性,实现了更快,更准确的图像重建.

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Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
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相关实验视频

Last Updated: May 21, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

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Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
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科学领域:

  • 光学和光子学 在光学和光子学.
  • 计算成像技术的成像
  • 波工程 波工程

背景情况:

  • 无镜头成像提供了诸如小型化和广视场之类的优势,但面临着诸如缓慢融合和机械错误之类的挑战.
  • 像广度相检索 (APR) 和扩展型图形代引擎 (ePIE) 这样的传统算法与空间光调节器 (SLM) 的未知或不准确的相调节值作斗争.

研究的目的:

  • 开发一种强大的无透镜成像方法,即使在未知空间光调制器 (SLM) 阶段调制值的情况下,也能够准确地进行复杂的振幅重建.
  • 研究调制函数和连贯光源特征对图像重建质量的影响.

主要方法:

  • 开发了一种新的无镜头成像方法,将螺旋路径上的图解扫描与扩展的图解代引擎 (ePIE) 算法相结合.
  • 该系统使用空间光调制器 (SLM) 来调制物体波面,并通过螺旋扫描收集衍射数据.

主要成果:

  • 拟议的螺旋扫描图形法成功重建了复杂的振幅信息,克服了具有未知SLM参数的传统算法的局限性.
  • 与传统的无透镜成像技术相比,图像重建的准确性和速度得到了显著的改进.
  • 在重建美国空军相板图像时,可以达到高达14微米的分辨率.

结论:

  • 开发的螺旋扫描图形无透镜成像方法为传统技术提供了优越的替代方案,特别是当SLM相调未知时.
  • 这种方法通过提高恢复速度和准确性来提高无镜头成像系统的实际应用性.