Researchers devise a full-color night vision goggle
Summary
Researchers at the Beijing Institute of Technology created a new type of night vision goggle that shows infrared light in full color instead of just green shades. This is done by using tiny quantum dots that absorb different parts of infrared light and a special screen that turns this into colorful images.Key Facts
- Human eyes cannot see infrared light because it lacks enough energy to trigger our light sensors.
- Most night vision devices translate infrared light into green shades, showing brightness but not color differences.
- The new device uses mercury telluride quantum dots, which are tiny particles about 4 nanometers wide.
- These quantum dots absorb specific infrared wavelengths and produce electrical signals that vary with the infrared color.
- A dual-layer OLED screen converts these signals into full-color images visible to the human eye.
- This technology improves on traditional night vision by showing different infrared wavelengths as different colors.
- The device better uses human eyes’ ability to detect color differences, potentially giving clearer, more natural views at night.
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