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Related Concept Videos

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

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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Confocal Fluorescence Microscopy

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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Phase Contrast and Differential Interference Contrast Microscopy

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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Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
Focusing of Light in the Eye01:16

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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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Super-resolution Fluorescence Microscopy

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 developed.

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Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging
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Diffractive optics and micro-optics: introduction to the feature issue.

J N Mait1, H P Herzig

  • 1US Army Research Laboratory, Mail Stop AMSRL-SE, 2800 Powder Mill Road, Adelphi, Maryland 20783, USA. mait@arl.mil

Applied Optics
|March 6, 2008
PubMed
Summary
This summary is machine-generated.

This Applied Optics issue covers diffractive and micro-optical elements, detailing their fabrication, design, and applications. Research explores advanced optical technologies and their practical uses in various scientific fields.

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Area of Science:

  • Optics and Photonics
  • Optical Engineering
  • Micro-optics

Background:

  • Diffractive and micro-optical elements are crucial components in modern optical systems.
  • Advancements in fabrication and design are continuously expanding their capabilities.
  • Understanding their applications is key to developing new optical technologies.

Purpose of the Study:

  • To present a collection of recent research on diffractive and micro-optical elements.
  • To highlight innovations in the fabrication, design, and application of these optical components.
  • To provide a comprehensive overview of the current state of the field.

Main Methods:

  • The issue compiles 16 peer-reviewed papers.
  • Research spans theoretical, experimental, and applied studies.
  • A companion feature in J. Opt. Soc. Am. A covers modeling aspects.

Main Results:

  • The papers showcase diverse applications of diffractive and micro-optical elements.
  • Innovations in fabrication techniques are presented.
  • New design methodologies are explored.

Conclusions:

  • The field of diffractive and micro-optical elements is rapidly advancing.
  • These elements offer significant potential for future optical technologies.
  • Continued research is essential for further development and application.