The first preliminary model of liquid crystal dualities
Lin et al./app 2025
Liquid crystals lenses can lead to glasses that can easily turn between close and distant correction.
The bilateral glasses date back to 18Y The century, their design has not changed mainly since then. The lower half of their lenses are usually formed to look at nearby things, while the two upper half are designed for a long time – so the person who wears them must continue to convert his outlook, which can be uncomfortable. Yi Hsin Lane At Yang Ming Chey Tong University in Taiwan and her colleagues, her colleagues built glasses that can switch between the two positions when clicking on the button.
Instead of designing lenses only from the glass, which must be convex or concave depending on its function, the researchers filled it with a thin layer of liquid crystal. Crystal molecules bend a different light depending on their arrangement inside the layer, and this can be controlled with electric fields.
Lynn says that the idea of switching glasses is based on this principle, as it will create thin poles in the framework of the necessary electrical fields, nearly 50 years, but technical challenges have stopped developing. Its team overcame some of these and made a preliminary model that can be worn.
These glasses currently reach a limited group of energy, and it has a functional area of about 10 millimeters – three to four times smaller than traditional glasses – and take about 5 seconds to adjust after clicking the button on its frame. But Lynn says that her team has fully described the principles of physics that make glasses work, and that the group has a feeling of how to improve it to move forward, including shortening the time of switching by improving electronics. “Urgently or later, almost everyone needs prescription glasses, and therefore the potential market is huge,” says the team member. Victor Reshetnyak At Taras Shevchenko National University in Kyiv, Ukraine.
Viola KenifskyAwareness specialist in New York says that people who can take advantage of the switch glasses have technical functions as small things may be at the top of their vision. They may also be in a job that requires a wide offer – for example, architects who need to judge wide or straight lines who may need to see multiple large screens, near their heads constantly, without constantly running their heads.
But the new initial model is far from being clinical ready, partly due to the small operating area of the lenses, Mark Rosenfield At the College of Optics at New York State University in New York. The use of electronic components also increases the cost of producing and complex liquid crystals, which may quickly be an obstacle to them to billions of potential users. Joshua silver At Oxford University. In 2004, he and his colleagues developed a different self -design that can be self -adjusted using fluids.
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