Contact lenses with a spiral design
Laurent Galinier
Lenses featuring a trippy spiral design could be an alternative to traditional multifocal lenses. It seems to produce clearer images than standard multifocal lenses, even in dimly lit areas.
The lens was created by the inventor Laurent Galinier.when bertrand simon He met Galinier through a scientific collaboration at the Institute of Optics Graduate School in France, and he immediately wanted to test lenses in the lab.
They are round lenses like traditional contact lenses, but the surface is carefully turned into a spiral using a lathe. This spiral shape changes the path that light rays take through the lens. That is, the lens does not have a single focal point, but several focal points, some closer to the lens and some farther from it.
It's unclear exactly how the spiral shape does this, but Simon said it appears to twist the light rays and create vortexes of light (like small tornadoes of light) that somehow influence each other. ing.
In the lab, Simon and his colleagues analyzed laser light passed through a spiral lens and simulated the process on a computer. In direct comparison with traditional multifocal lenses, the spiral lenses provided more clarity and detail when more light passed through them, and performed better in dim light conditions.
Therefore, spiral lenses may be suitable under various lighting conditions. For example, it could be useful for people who use multifocal lenses while driving at night, Simon said. He tried the spiral contact lenses himself and said that while the hard material was uncomfortable in contact with his eyes, it saved him the hassle of removing his glasses to look at his cell phone. With the spiral lens, I could see the screen clearly.
james wolfthorn According to researchers at Aston University in the UK, many people experience problems focusing on nearby objects, even if their distance vision is corrected. Innovations like spiral lenses are promising, but only clinical trials can prove how much of a difference new technology will actually make for people, he says.
Simon says it's possible to create a more compact camera by replacing part of the lens with a spiral lens version, but the team will first investigate the science behind spiral light. We would like to do further testing.
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Source: www.newscientist.com
