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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.
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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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Low-power gradient-index microscope objective: design.

K S Krishna, A Sharma

    Applied Optics
    |December 4, 2010
    PubMed
    Summary
    This summary is machine-generated.

    We designed a new gradient-index (GRIN) microscope objective using a spectral model. This GRIN objective offers superior performance with simpler configurations compared to conventional designs.

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    Area of Science:

    • Optical engineering
    • Microscopy instrumentation

    Background:

    • Conventional microscope objectives often involve complex lens configurations and can be limited in performance.
    • Gradient-index (GRIN) materials offer unique optical properties that can simplify lens design.

    Purpose of the Study:

    • To design an achromatic, low-power gradient-index (GRIN) microscope objective using a novel spectral model.
    • To demonstrate the superior performance and simpler configurations achievable with GRIN technology.

    Main Methods:

    • Utilized the gradient-index (GRIN) spectral model for objective design.
    • Employed simpler lens configurations compared to traditional designs.

    Main Results:

    • Developed a new GRIN microscope objective with enhanced performance.
    • The designed GRIN objective outperforms currently available conventional objectives.
    • Achieved superior performance with a simpler optical design.

    Conclusions:

    • The GRIN spectral model is a valuable tool for designing advanced optical systems.
    • GRIN technology enables improved performance and simplified configurations for microscope objectives.
    • Provides design guidelines for future optical system development using GRIN spectral modeling.