Huawei has released a post in which one of the engineers explained the benefits of Mate 40 Pro’s freeform lens technology. Machine translation is pretty rough, but we got it right.
Freeform lenses are arguably one of the iconic features of the Mate 40 Pro. Instead of using traditional spherical or aspheric optics, telephone 20MP ultra-wide-angle cameras use asymmetric lenses with complex, non-uniform surfaces. This allows engineers to tackle one of the biggest problems with ultra-wide cameras, distortion.
But distortion isn’t the only problem Huawei is trying to solve. Today’s smartphones are quite heavy, so freeform lenses are naturally light and thin, which helps in part. Perhaps in the future, refinement of this technology will result in a small bulge on the back of the device. This is because freeform lenses require fewer optics. In addition, new lens technology allows more light to enter the sensor, improving camera performance and quality.
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Huawei has been working on this lens for over two years and is finally ready for the mass market. Telephoto lenses also have their own distortions, so the company plans to do this. It is even more important to reduce the thickness of the optics.
Source (In Chinese)