Cell：突破人类视觉极限，我国学者开发红外隐形眼镜，闭眼也能“看见”红外世界

Core Viewpoint - The article discusses the development of wearable near-infrared (NIR) upconversion contact lenses (UCL) that enable humans to perceive NIR images, expanding the visual spectrum beyond the visible light range [3][9]. Group 1: Research Development - A research team from multiple institutions developed UCL that possess suitable optical properties, hydrophilicity, flexibility, and biocompatibility, allowing for the perception of NIR spatial and temporal color images [3][5]. - The UCL achieved a high doping ratio (7-9%) of upconversion nanoparticles (UCNP) while maintaining over 90% transparency in the visible light spectrum, significantly outperforming previously reported materials [5][6]. Group 2: Functional Capabilities - Mice wearing UCL were able to perceive NIR light and distinguish different temporal frequencies and orientations of NIR information [6]. - Human volunteers wearing UCL could see a range of NIR light intensities and accurately identify time-encoded information [6][9]. Group 3: Technological Innovations - The research team developed a wearable eyeglass system integrated with UCL to enhance spatial resolution, allowing volunteers to recognize complex NIR patterns with clarity similar to visible light vision [6][9]. - The use of trichromatic UCNP in the UCL enables the conversion of three different NIR wavelengths into red, green, and blue visible light, facilitating the perception of multi-spectral NIR colors [7][9]. Group 4: Future Applications - This technology has potential applications in medical fields, information processing, and visual assistance technologies, and may offer new solutions for treating visual disorders such as color blindness [9][12]. - The research emphasizes the need for further optimization, including improving upconversion efficiency and achieving directional emission of light from the lenses [12].