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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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数字自行调整的聚焦机schlieren.

Brett F Bathel, Joshua M Weisberger, Wayne E Page

    Optics letters
    |February 15, 2024
    PubMed
    概括

    一个新的数字自行调整聚焦闪光灯 (D-SAFS) 系统使用微液晶显示器 (μLCD) 进行灵活的控制. 这项创新通过使光学参数能够在没有物理网格操纵的情况下进行动态调整来增强schlieren成像.

    科学领域:

    • 光学物理学 光学物理学
    • 流体动力学 流体动力学
    • 仪器化 仪器化 仪器化

    背景情况:

    • 传统的自行调整聚焦schlieren (SAFS) 系统需要对源和切断网格进行物理操作以优化.
    • 在传统的SAFS设置中调整灵敏度和性能通常是繁且耗时的.

    研究的目的:

    • 为了引入一个新的数字自我调整的聚焦系统 (D-SAFS) 系统.
    • 为了证明数字方法对schlieren成像仪器仪表的优势.
    • 为了使schlieren系统参数能够在飞行中进行调整.

    主要方法:

    • 开发一个D-SAFS系统,采用数字透明微液晶显示器 (μLCD) 和线性偏振器.
    • 微光液晶显示器作为源和切断电网,可以操纵光的极化.
    • 实现对切断模式类型,空间频率和方向的数字控制.

    主要成果:

    • D-SAFS系统允许对光学参数进行动态的,由软件控制的更改.
    • 消除了修改源/切断网格的物理访问的需要.
    • 与传统的SAFS系统相比,提供了更高的灵活性和效率.

    结论:

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    • 数字自行调整的聚焦闪光系统为闪光成像提供了显著的进步.
    • 基于μLCD的方法为光学测量提供了卓越的适应性和易用性.
    • 这种数字系统为更复杂,更响应的流量可视化技术铺平了道路.