The adaptive liquid lens is based on a new fluid called dibutyl adipate. When a voltage is applied, the new lens changes shape and focal length. The Hefei University of Technology has a credit.
An adaptive liquid lens is based on a new fluid called dibutyl adipate that changes focal length when a voltage is applied. The lens is lightweight, compact and simple to fabricate, which makes it ideal for mobile phone cameras, endoscopes, eyeglasses and machine vision applications.
The research team leader said that the human eye can focus on objects at different distances at incredibly fast speeds. We developed an eye-like adaptive liquid lens that can be used to change the shape of the DBA liquid.
The researchers describe their new DBA-based adaptive liquid lens, which weighs just a few grams, and show that it exhibits high optical performance with good stability. DBA's structure allows an applied voltage to be used to quickly change the lens's shape. DBA is non-volatile and inexpensive, making it ideal for use in adaptive liquid lenses.
One day, adaptive liquid lens could replace conventional solid lens systems. "This would allow a mobile phone camera that can change focal length in a matter of seconds, while still being as thin as the phone itself." This type of lens can be used for a long time without needing mechanical elements.
Liquid is turned into a lens.
The researchers created the new liquid lens by filling an electrode with DBA liquid, which formed a dome shape because of the water-repelling layer on the inner surface. A direct current causes DBA molecule to accumulate at the anode, changing the dome shape in a way that is dependent on the voltage applied, thus changing the focal length. The DBA liquid is able to recover its initial shape when the electric field is removed.
The DBA lens has a significant improvement over adaptive liquid lenses that are commercially available. The liquid needs a film to separate the liquid from the metal.
The DBA liquid lens is unaffected by volatilization and has no need for an insulation layer. The DBA lens has a simpler structure and better stability compared to liquid lens.
The DBA liquid lens has a focal length that can be changed. The process is shown at 10 times the normal speed. The Hefei University of Technology has a credit.
Demonstrating optical performance.
The DBA-based liquid lenses exhibit an optical transmittance of around 95 percent at visible wavelength between 395 and 782 nm, and that their performance remains stable at room temperature to over 200 F.
The researchers are working on ways to reduce the voltage needed to drive the DBA-based liquid lens, increase the resolution and improve the response speed to the order of milliseconds. They want to reduce the effects of gravity on the DBA liquid so that larger glasses can be made.
The Variable-focus liquid lens is based on electrically responsive fluid. There is a book titled "10.368/OL.447182."
The journal has information about Optics Letters.
Researchers use fluid to make eye-like adaptive lens.
The document is copyrighted. Any fair dealing for the purpose of private study or research cannot be reproduced without written permission. The information provided is for educational purposes.
All Rights Reserved © 2024
