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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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相关实验视频

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Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
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非代相位倾斜干扰计用于倾斜转移计算和相位提取.

Zhe Zhang, Donghui Zheng, Lei Chen

    Optics express
    |June 29, 2023
    PubMed
    概括

    一种新的非代相位倾斜干扰计 (NIPTI) 方法准确计算倾斜转移和提取相位,解决振动引起的错误. 这种技术为干涉测量提供了高精度,即使在具有挑战性的环境中.

    科学领域:

    • 光学计量学 在光学计量学
    • 干涉测量是干涉测量的方法.
    • 振动分析 振动分析

    背景情况:

    • 外部振动通常会在干扰度测量中引发随机倾斜移位错误.
    • 精确的相位提取对于高精度光学计量学至关重要.
    • 现有的方法可能会在动态倾斜转移补偿方面遇到困难.

    研究的目的:

    • 开发一种非代相位倾斜干扰测量 (NIPTI) 方法.
    • 为了解决和解决由外部振动引起的随机倾斜移位问题.
    • 为了实现精确的相位提取和倾斜偏移计算.

    主要方法:

    • 对线性拟合的更高阶相项的近似.
    • 最小方程方法用于准确的倾斜偏移估计,无需代.
    • 在时间域相位转移Fizeau干扰计中用于空腔测量中的应用.

    主要成果:

    • 阶段计算的模拟根平均平方误差达到0.0002λ.
    • 实验阶段计算显示Fizeau干扰度没有显著的波纹.
    • 计算阶段的根平均平方重复率达到0.0006λ.

    结论:

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    • 尼普蒂为振动下的干扰测量提供了一种高效和高精度的解决方案.
    • 该方法有效地弥补了随机倾斜转移错误.
    • 尼普蒂提高了动态环境中相位测量的可靠性和准确性.