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相关概念视频

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Atomic Force Microscopy01:08

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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
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相关实验视频

Updated: Jan 11, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
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A Multimodal Wide-Field Fourier-Transform Raman Microscope

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快速单像素自动对焦使用单个里埃调制模式.

Huiling Chen, Kaixin Yin, Dongfeng Shi

    Optics express
    |November 11, 2025
    PubMed
    概括
    此摘要是机器生成的。

    一种新的单像素自动对焦 (AF) 方法使用单个里埃基调制 (SFBM) 模式来实现快速,准确的对焦. 这种非成像技术简化了硬件和计算,在具有挑战性的低光条件下表现出色.

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    科学领域:

    • 光学工程是指光学工程.
    • 图像处理 图像处理
    • 传感器技术 传感器技术

    背景情况:

    • 传统的自动对焦 (AF) 系统使用多像素传感器和度指标.
    • 在低照明,低对比度和成本敏感的应用中存在性能限制.

    研究的目的:

    • 引入非成像,单像素AF技术,使用福利埃基调制.
    • 为了展示一个简化的,高速的自动对焦解决方案.

    主要方法:

    • 使用单个里埃基调制 (SFBM) 模式来探测光学系统.
    • 使用单像素探测器来检测失焦,而不需要图像重建.
    • 利用单个空间频率对失焦的灵敏度.

    主要成果:

    • 实现了500kHz的聚焦率,超过了数字微镜设备 (DMD) 的限制.
    • 在低光,宽带和太赫兹条件下有效运行.
    • 显著简化了硬件和计算要求.

    结论:

    • 该SFBM-AF方案提供了一个紧的,高速的替代传统的基于图像的AF.
    • 适合各种光学应用,需要强大高效的自动对焦.