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

Phase Contrast and Differential Interference Contrast Microscopy

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...

Time and frequency -Domain Interpretation of Phase-lead Control

Time and frequency -Domain Interpretation of Phase-lead Control

Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...

You might also read

Related Articles

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

Sort by

Same author

Reduced Image Quality Impairs Monocular Blur-Driven Accommodation in Keratoconus.

Investigative ophthalmology & visual science·2026

Same author

Effect of spherical aberration on the vergence-accommodation conflict.

Biomedical optics express·2026

Same author

Comparison of decentration, tilt, and dynamic stability between retropupillary iris claw and scleral fixated intraocular lenses with flanged haptics.

Journal of cataract and refractive surgery·2026

Same author

Impact of Myopia Control Spectacles on Retinal Image Contrast.

Investigative ophthalmology & visual science·2026

Same author

Evidencing the capability of Debaryomyces hansenii for using VFAs from organic digestates as feedstock.

Biotechnology for biofuels and bioproducts·2026

Same author

Optical quality and anisotropy across the retina of Chinese children's eyes.

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

Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026

Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026

Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026

Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026

Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026

Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Mar 3, 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

Chromatic aberration control with liquid crystal spatial phase modulators.

Jose L Martinez, Enrique J Fernandez, Pedro M Prieto

|May 5, 2017

Summary

This summary is machine-generated.

Diffractive optical elements on liquid crystal spatial light modulators (LC-SLMs) act as multi-focal lenses due to chromatic behavior. Their dispersion can compensate for the eye

More Related Videos

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Published on: September 20, 2017

Related Experiment Videos

Last Updated: Mar 3, 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

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Published on: September 20, 2017

Area of Science:

Optics and Photonics
Liquid Crystal Displays
Diffractive Optics

Background:

Diffractive optical elements (DOEs) with 2π-wrapped phase profiles are implemented using liquid crystal spatial light modulators (LC-SLMs).
Wrapped phase profiles deviate from continuous profiles at wavelengths other than the design wavelength, leading to unwanted phase jumps.
These deviations cause the DOEs to function as multi-focal lenses, exhibiting multiple orders of optical power.

Purpose of the Study:

To describe the chromatic behavior of DOEs implemented on LC-SLMs.
To analyze the optical power dispersion and energy distribution across different orders of the multi-focal lens.
To demonstrate the application of this chromatic dispersion for compensating longitudinal chromatic aberration.

Main Methods:

Theoretical analysis of the chromatic behavior of 2π-wrapped phase profiles on LC-SLMs.
Characterization of optical power dispersion and energy dependence on wavelength and material dispersion.
Experimental demonstration of chromatic aberration compensation using programmed defocus on an LC-SLM.

Main Results:

The optical power dispersion for each diffractive order is linearly proportional to the wavelength.
The energy of each order is influenced by the design wavelength and material dispersion.
The first-order defocus is typically the most relevant for visible light, though other orders can be significant.

Conclusions:

LC-SLM-based DOEs exhibit predictable chromatic behavior, acting as multi-focal lenses.
The inherent dispersion of these diffractive lenses can be harnessed for optical applications.
Longitudinal chromatic aberration, such as that in the human eye, can be effectively compensated by programming appropriate defocus profiles into the LC-SLM.