Global EditionASIA 中文雙語Fran?ais
China
Home / China / Innovation

Scientists develop contact lenses surpassing human eye

By Zhou Wenting in Shanghai | China Daily | Updated: 2025-05-27 09:06
Share
Share - WeChat

Finding a better solution for visual disorders such as color blindness, a team of scientists from home and abroad have jointly devised a unique contact lens that surpasses current human visual capabilities. These contact lenses capture things even naked eyes cannot see, according to the researchers.

In their research, the scientists, including those from the University of Science and Technology of China in Hefei, Anhui province, and Fudan University in Shanghai, ingeniously combined rare earth particles emitting multiple fluorescent signals with contact lenses.

By wearing such special lenses, human eyes can perceive light beyond the visible spectrum into the near-infrared range, allowing individuals to access multi-dimensional information in terms of time, space, and color from near-infrared light.

"With the aid of such invisible glasses, people can see things that were previously invisible to them," said Zhang Fan, one of the lead researchers on the team and a professor of chemistry from Fudan University.

"And for individuals suffering from color blindness, by supplementing visible light information with near-infrared wavelengths, wearers can enhance their ability to differentiate between colors like red and green," he said.

The research results also hold vast application potentials in fields, such as information processing and visual assistance technologies, said the researchers.

"For example, information encoding, transmission and decryption can all be carried out in the near-infrared band. If using near-infrared light to light up particular information such as patterns, only those who wear the special contact lenses can see the patterns, while those who don't will never see them as the near-infrared bands are outside the range of their visual perception," said Zhang.

Scientists explained that there are cone cells on human's retina that respond specifically to the primary colors of red, green and blue. The proportion of activation in these cells responding to the three colors determines the colors that people see.

However, compared to the broad optical spectrum in nature, the human eye can only perceive wavelengths ranging from 400 to 700 nanometers, leading to the neglect of a significant amount of potential information. By extending perception to the near-infrared range, 700 to 2,500 nanometers, the technology may open new possibilities for pushing boundaries for human vision.

"Rare earth elements possess unique optical properties, allowing the conversion of different colors of light through near-infrared excitation. By discerning the fluorescence colors of nano-particles, individuals can identify near-infrared wavelengths invisible to the naked eye, realizing the recognition of near-infrared 'colors'," said Chen Zihan, a researcher on the team from Fudan University.

The team further modified the surface of the nano-particles and dispersed them in polymer solutions, ultimately creating highly transparent contact lenses.

In their research, volunteers who wore the contact lenses were able to perceive near-infrared light through the fluorescence of red, green and blue visible wavelength bands, and distinguish various compositions of near-infrared light wavelengths and patterns. This demonstrated the effective visualization of near-infrared images using multi-color rare earth luminescent materials, said the scientists.

A paper about the research, a collaborative effort between domestic and international research institutions, was published in the journal Cell on Thursday.

Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 国产精品亚洲精品日韩已满| 日本电影在线观看免费影院| 四影虎库1515mc海外| 香蕉视频国产在线观看| 性生交大片免看| 久草精品视频在线播放| 特级毛片在线播放| 国产免费一区二区三区免费视频| 91在线精品中文字幕| 成人综合在线视频| 九九久久精品无码专区| 波多野结衣中文字幕一区二区三区| 国产AV无码专区亚洲AV| 欧美一级久久久久久久大片 | 日本爽爽爽爽爽爽在线观看免| 亚洲日韩精品国产一区二区三区 | 久久综合国产乱子伦精品免费| 法国性XXXXX极品| 国产成人精品福利网站人 | 欧美人妖视频网站| 免费无码又爽又刺激高潮的视频| 香蕉视频网站在线| 国产精品午夜剧场| 一二三四视频日本高清| 日韩精品无码人妻一区二区三区 | 99热在线免费播放| 成人性开放大片| 久久棈精品久久久久久噜噜| 欧美在线观看第一页| 人人妻人人澡人人爽人人dvd| 美女被网站大全在线视频| 日本黄大片在线观看| 亚洲精品亚洲人成人网| 美女免费视频一区二区三区| 国产性生大片免费观看性| 69视频免费在线观看| 女子校生下媚药在线观看| 中文字幕永久免费| 日韩免费无砖专区2020狼| 亚洲人成在线观看| 欧美高清在线视频在线99精品|