Related Experiment Video
Updated: Jun 16, 2026
08:13
A Guide to Build a Highly Inclined Swept Tile Microscope for Extended Field-of-view Single-molecule Imaging
Published on: April 8, 2019
Microscope adapted for the generation of various contrast types: theory and experiment
Applied Optics
|February 20, 2010
Summary
This study presents a novel microscope adaptation using polarizers and birefringent plates to generate pure phase or amplitude contrast. This technique enhances imaging by isolating specific contrast types for clearer visualization.
Area of Science:
- Microscopy
- Optical Physics
- Image Analysis
Background:
- Microscopy commonly uses phase or amplitude contrast for sample visualization.
- Isolating specific contrast types can improve image clarity and data interpretation.
- Existing methods may not achieve pure contrast generation.
Purpose of the Study:
- To adapt a microscope for generating pure phase or amplitude contrast.
- To demonstrate a method for isolating differential and nondifferential contrast types.
- To provide theoretical and practical insights into the technique.
Main Methods:
- Utilized a polarizer and analyzer.
- Incorporated two birefringent double plates.
- Placed components at conjugate focal planes of the condenser and objective.
Main Results:
- Successfully generated pure forms of phase and amplitude contrast.
- Demonstrated the isolation of differential and nondifferential contrast.
- Presented practical results showcasing the technique's efficacy.
Conclusions:
- The adapted microscope effectively generates pure contrast types.
- The arrangement offers a method for enhanced microscopic imaging.
- The technique has practical applications in visualizing microscopic samples.
Related Concept Videos
01:26Phase 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...
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...
01:18Imaging 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...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
01:22Overview 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...
01:25Overview of Electron Microscopy
The wavelengths of visible light ultimately limit the maximum theoretical resolution of images created by light microscopes. Most light microscopes can only magnify 1000X, and a few can magnify up to 1500X. Electrons, like electromagnetic radiation, can behave like waves, but with wavelengths of 0.005 nm, they produce significantly greater resolution up to 0.05 nm as compared to 500 nm for visible light. An electron microscope (EM) can create a sharp image that is magnified up to 2,000,000X.
01:15Transmission Electron Microscopy
In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400 keV in...
01:29Two-Dimensional Microscopy in Microbiology
Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...