Examples of GRIN lenses, made from hundreds of thousands of layered and laminated nanoscale polymer films
One of the finished GRIN lenses
Scientists have created lenses that refract light in the same fashion as the lens in the human eye (Photo: Shutterstock)
Although many people may think that the lenses in our eyes are just like those found in cameras, there is in fact one key difference between the two – while man-made lenses have just a single index of refraction, meaning that they only bend light in one direction, our natural lenses refract light by varying degrees. This is why artificial implanted lenses, such as those used to treat cataracts, can create visual distortions. A new technology, however, now allows for the fabrication of lenses that work just like the ones in our eyes.
Other Images from this Gallery