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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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Updated: Jul 3, 2025

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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双视场离轴空间复杂数字全息使用弗雷内尔的双镜.

Lavlesh Pensia1,2, Manoj Kumar3,4, Raj Kumar1,2

  • 1CSIR-Central Scientific Instruments Organisation, Sector 30C, Chandigarh 160030, India.

Sensors (Basel, Switzerland)
|February 10, 2024
PubMed
概括

这项研究引入了一种使用弗雷内尔数码全息系统的新型数字全息系统.

关键词:
弗雷内尔双镜镜子弗雷尼尔衍射法是一种法.数字全息图是数字全息图.多重复合全息影像的使用.

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 3D成像技术 3D成像技术

背景情况:

  • 数字全息 (DH) 通过记录振幅和相位来实现3D成像.
  • 在DH中,有限的视野 (FOV) 受到数字传感器像素距的限制.

研究的目的:

  • 为了增强摄像头FOV在离轴数字全息.
  • 用弗雷内尔的双镜来开发一个双FOV DH系统.

主要方法:

  • 使用弗雷内尔双镜实现了一个新的DH配置.
  • 通过对象束的空间频率复合实现了双FOV.
  • 采用了一次性采集和共同路径光学框架.

主要成果:

  • 与现有的DH系统相比,显示了相机FOV的翻倍.
  • 成功拍摄了测试对象的两个截然不同的区域.
  • 验证了系统在表面造型测量中的准确性,匹配光学造型仪的结果.

结论:

  • 拟议的双FOV-DH系统有效地扩大了成像范围.
  • 简单的配置在显微镜和光学计量学中提供了广泛的应用.