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

Focusing of Light in the Eye

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...

You might also read

Related Articles

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

Sort by

Same author

Needle immersed vitrification can lower the concentration of cryoprotectant in human ovarian tissue cryopreservation.

Fertility and sterility·2010

Same author

Maternal control of early mouse development.

Development (Cambridge, England)·2010

Same author

Characterization of EndoTT, a novel single-stranded DNA-specific endonuclease from Thermoanaerobacter tengcongensis.

Nucleic acids research·2010

Same author

Association study between three polymorphisms and myocardial infarction and ischemic stroke in Chinese Han population.

Thrombosis research·2010

Same author

Arabidopsis IWS1 interacts with transcription factor BES1 and is involved in plant steroid hormone brassinosteroid regulated gene expression.

Proceedings of the National Academy of Sciences of the United States of America·2010

Same author

Effect of isoflavone extracts from glycine max on human endothelial cell damage and on nitric oxide production.

Menopause (New York, N.Y.)·2010

Search research articles

Related Experiment Video

Updated: Jul 25, 2025

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

Adaptive liquid lens with controllable light intensity.

Yangyu Li, Ziyi Zhang, Xuning Liu

|June 29, 2023

Summary

An adaptive liquid lens controls light intensity and beam size using three liquid layers. This innovation offers improved laser illumination homogenization and may reduce vignetting in imaging systems.

Area of Science:

Optics and Photonics
Materials Science

Background:

Controlling light intensity and beam size is crucial for applications like laser illumination and imaging.
Existing optical systems often face challenges with inhomogeneous light attenuation and limited optical power tuning ranges.

Purpose of the Study:

To demonstrate an adaptive liquid lens capable of simultaneously modulating light intensity and beam spot size.
To address limitations in current optical systems, specifically inhomogeneous attenuation and vignetting.

Main Methods:

Fabrication of a liquid lens comprising a dyed water solution, a transparent oil, and a transparent water solution.
Utilizing the liquid-liquid (L-L) interface of the dyed layer to adjust light intensity distribution.
Employing the transparent liquids and their L-L interfaces to control the beam spot size.

More Related Videos

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

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

Related Experiment Videos

Last Updated: Jul 25, 2025

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

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

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

Main Results:

Achieved an optical power tuning range from -44.03 m⁻¹ to +39.42 m⁻¹.
Demonstrated an approximate 89.84% homogenization level for laser illumination.
The adaptive liquid lens effectively modulated both light intensity and beam spot size.

Conclusions:

The proposed adaptive liquid lens offers a novel solution for controlling light intensity and beam dimensions.
The design enables inhomogeneous light attenuation and a broad optical power tuning range.
Potential applications include enhanced laser illumination homogenization and mitigation of vignetting in imaging systems.