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Related Concept Videos

Phase Contrast and Differential Interference Contrast Microscopy01:26

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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Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
14:09

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Published on: April 7, 2014

Quantitative characterization of x-ray differential interference contrast microscopy using modulation transfer

Takashi Nakamura1, Chang Chang

  • 1School of Biomedical Engineering, Science & Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, USA.

Optics Express
|September 22, 2011
PubMed
Summary
This summary is machine-generated.

Differential interference contrast microscopy objectives were compared using modulation transfer function. The zone-plate doublet showed better performance than the XOR pattern, especially under non-ideal conditions.

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Last Updated: May 29, 2026

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Area of Science:

  • Optical microscopy
  • Image analysis

Background:

  • Differential interference contrast (DIC) microscopy is crucial for visualizing transparent samples.
  • Objective lens performance significantly impacts image quality in DIC microscopy.
  • Quantitative comparison of different DIC objective designs is needed.

Purpose of the Study:

  • To quantitatively compare the performance of two DIC objective types: XOR pattern and zone-plate doublet.
  • To analyze the influence of various optical factors on objective performance.

Main Methods:

  • Modulation transfer function (MTF) was used for quantitative performance characterization.
  • Simulations and/or experiments were conducted to evaluate objective performance.
  • Effects of partial coherence, absorption, phase shifts, and bias retardation were investigated.

Main Results:

  • The zone-plate doublet objective demonstrated superior performance compared to the XOR pattern objective.
  • Performance differences were analyzed under conditions of partial coherence and finite absorption.
  • The impact of object phase and bias retardation on MTF was evaluated.

Conclusions:

  • The zone-plate doublet is a more effective design for DIC microscopy compared to the XOR pattern.
  • Understanding the influence of optical parameters is essential for optimizing DIC imaging.
  • This study provides a quantitative basis for selecting DIC objectives.