The world’s smallest lens, with a size twice the width of a human hair, was just created using 3D printing. Researchers from Germany created a triple lens device by combining three of these lenses into a ‘pinhead’ device.
According to the makers of the lenses, the lens could lead cameras of the future to the size of a grain of salt which will revolutionize different fields like medical, construction, military, manufacturing, robotics, and drone technology.
This lens is capable of razor sharp images and it can attach to the end of an optical fiber, and it is thin enough to fit in a hollow of a syringe.
According to the research team, the lenses can be directly printed onto image sensors, and even onto the tip of an endoscope—a camera used for inspecting internal body organs. They were able to print the triple lenses directly onto the end of an optical fiber so thin that it fits inside a syringe needle.