Aspherical Mobile Camera Lens Layout for Wide-Angle Aberration Control

The imaging optical system is divided into multiple lens groups (first lens group with negative refractive power, second lens group with positive refractive power, third lens group with negative refractive power) that can move independently along the optical axis. This segmentation allows each group to contribute differently to the overall field of view while maintaining a compact form factor, resolving the contradiction between large field of view and small device size.

The patent employs a zoom mechanism that dynamically adjusts the relative positions of the lens groups along the optical axis. By making the lens groups movable rather than fixed, the system can achieve variable field of view (wide-angle to telephoto) without requiring a large physical structure, thus resolving the contradiction between field of view and device size.

Different lens groups are assigned different refractive powers and surface characteristics (convex/concave) to address specific aberration issues in different regions of the optical path. The first lens group with negative refractive power corrects peripheral aberrations, while the second lens group with positive refractive power addresses central field aberrations, achieving comprehensive aberration correction across the wide field of view.

The imaging optical system uses a composite structure of multiple lens groups with different optical properties (refractive powers, surface curvatures, materials) rather than a single wide-angle lens. This composite approach allows each lens group to be optimized for specific functions, making aberration correction more manageable and improving manufacturing precision.

The patent utilizes the optical axis dimension efficiently by arranging lens groups in sequence along this dimension with optimized spacing. The movable lens groups can shift positions along the optical axis to achieve different focal lengths, maximizing the use of available space while maintaining imaging performance. This dimensional optimization allows compact design without sacrificing reliability.

The system achieves different imaging performances (wide-angle, standard, telephoto) by changing the positional parameters of the lens groups rather than changing the physical size of the device. By adjusting the distances between lens groups along the optical axis, the system maintains high imaging performance across different field of view settings while keeping the device compact.