Researchers devise a full-color night vision goggle
摘要
北京理工大学辛焘和葛牧团队研制出一种新型全彩色夜视镜。该设备利用碲化汞胶体量子点吸收红外光，并通过双层OLED将吸收的能量转换为可见光，从而将不同红外波长映射到可见光谱的不同部分，生成接近自然视觉的全彩图像，而非传统夜视镜的单色绿光显示。
Human eyes don’t register the infrared portion of the light spectrum because infrared photons don't carry enough energy to trigger the signaling pathway inside our light-sensing cells. But we’ve been able to make devices that give us a visual representation of what’s happening in the infrared.
A team at the Beijing Institute of Technology, led by Xin Tang and Ge Mu, has now built a device that lets people see infrared in a new way. Instead of just translating it to visible shades of green as it’s done in standard night-vision goggles, it translates different infrared wavelengths into distinct parts of the visual spectrum, giving the eye something closer to natural vision.
Researchers achieved that by combining mercury telluride colloidal quantum dots, which absorb infrared light, and a dual-layer OLED, which converts that absorbed energy into visible color. Stacked together with the right internal wiring, they make incoming infrared radiation come out the other side as an ordinary-looking, full-color image.
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