Freeform lenses are excellent at controlling distortion. Traditional wide-angle lenses tend to produce significant distortion when used, especially barrel distortion, which causes straight lines at the edges of the image to become curved. The free-form lens can reduce this distortion through its special design, making the effect of ultra-wide-angle photography more natural and realistic. In addition, free-form lenses can also be used in other scenarios that require high-precision optical correction, such as ultra-wide-angle lenses in multi-camera systems on mobile phones.
Historical background and development trends
The concept and application of free-form lenses have gradually attracted attention in recent years. The earliest application can be traced back to the Huawei Mate40 Pro+ model, and subsequently flagship models such as OnePlus 9 Pro and OPPO Find X3 Pro also adopted this technology. The application of free-form lenses not only improves the image quality of ultra-wide-angle lenses, but also promotes the advancement of mobile phone photography technology. With the continuous advancement of technology and reduction of costs, it is expected that more devices will adopt this technology in the future to further improve the photography effect.