Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Confocal Fluorescence Microscopy

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,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Elimination of detrimental grain boundary segregation in Garnets.

Nature communications·2026

Same author

Electric mobility and the green transition: A spatial econometric perspective on global decarbonization.

Journal of environmental management·2026

Same author

Combined Chemical and Mechanical Debridement Enhances Salivary Protein Removal from Titanium while Maintaining Biological Properties.

ACS biomaterials science & engineering·2026

Same author

A Triterpenoid-Enriched GLE70 Fraction From <i>Ganoderma lingzhi</i> Ameliorates Alcoholic Liver Disease via Multi-Target Regulation.

Food science & nutrition·2026

Same author

Magnetic order and excitations in Ce<sub>3</sub>TiBi<sub>5</sub>and Ce<sub>3</sub>ZrBi<sub>5</sub><sup></sup>.

Journal of physics. Condensed matter : an Institute of Physics journal·2026

Same author

Postmarketing safety surveillance for GSK's AS01<sub>E</sub>-adjuvanted respiratory syncytial virus prefusion F protein-based vaccine in the USA: protocol for a non-interventional postauthorisation safety study.

BMJ open·2026

Same journal

Multi-module collaborative optimization-driven fast speckle correlation imaging in variable environments.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026

Same journal

Secrecy performance analysis of NOMA-UWOC systems over a vertically stratified WGG oceanic turbulence channel.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026

Same journal

Backscattering of plane waves in a composite system containing a rough surface and anisotropic scatterers.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026

Same journal

Aspherical surface construction methods based on extended Jacobi polynomials.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026

Same journal

OCT sidelobe suppression method based on dual-path phase sinusoidal modulation and minimum value fusion.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026

Same journal

Optical design concepts using wavelength-selective diffractive optics to enable miniaturized multimodal endoscopic imaging across separated spectral ranges.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Feb 20, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Analysis of laser speckle reduction utilizing microlens-array-based projection screen.

Qianli Ma, Chang-Qing Xu

Journal of the Optical Society of America. A, Optics, Image Science, and Vision

|October 17, 2017

Summary

This summary is machine-generated.

This study theoretically analyzes laser speckle reduction using a microlens array (MLA). It provides a guideline for selecting an MLA to ensure speckle contrast ratio (SCR) is imperceptible to the human eye.

More Related Videos

A Novel Approach to Overcome Movement Artifact When Using a Laser Speckle Contrast Imaging System for Alternating Speeds of Blood Microcirculation

A Novel Approach to Overcome Movement Artifact When Using a Laser Speckle Contrast Imaging System for Alternating Speeds of Blood Microcirculation

Published on: August 30, 2017

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Published on: June 2, 2010

Related Experiment Videos

Last Updated: Feb 20, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

A Novel Approach to Overcome Movement Artifact When Using a Laser Speckle Contrast Imaging System for Alternating Speeds of Blood Microcirculation

A Novel Approach to Overcome Movement Artifact When Using a Laser Speckle Contrast Imaging System for Alternating Speeds of Blood Microcirculation

Published on: August 30, 2017

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Published on: June 2, 2010

Area of Science:

Optics and Photonics
Display Technology
Image Processing

Background:

Laser speckle is a common artifact in coherent imaging systems, degrading image quality.
Microlens arrays (MLAs) are optical components that can manipulate light wavefronts.
Reducing speckle contrast ratio (SCR) is crucial for clear visual perception in projection systems.

Purpose of the Study:

To theoretically analyze the effectiveness of microlens arrays (MLAs) in reducing laser speckle.
To develop a model for understanding the screen effect on speckle reduction.
To establish a guideline for selecting MLAs to achieve imperceptible speckle contrast.

Main Methods:

Development of a theoretical model for speckle reduction using MLAs.
Analysis of the influence of MLA cell size and projection/detection resolution on speckle contrast ratio (SCR).
Investigation of the relationship between MLA cell size and SCR in projection systems.

Main Results:

A theoretical model was established to quantify speckle reduction by MLAs.
The study identified the critical role of MLA cell size in suppressing speckle.
The relationship between MLA cell size and speckle contrast ratio (SCR) was mathematically defined.

Conclusions:

Microlens arrays are effective for laser speckle reduction in projection systems.
MLA cell size is a key parameter for controlling speckle contrast ratio (SCR).
A practical guideline is proposed for selecting MLAs to ensure speckle is below the threshold of human perception.