Seven-Lens Optical Assembly with Nested Structure

The patent implements a nested lens structure where lens elements are arranged in concentric circles with different diameters, allowing multiple lens elements to occupy overlapping radial spaces. This nesting arrangement enables 7 lens elements to be packed into a compact volume while maintaining proper optical spacing and preventing mechanical interference between adjacent elements.

The patent transitions from conventional linear axial arrangement of lens elements to a two-dimensional concentric circular arrangement. By utilizing radial distance from the optical axis as a new spatial dimension, the design accommodates multiple lens elements without proportionally increasing the axial length, thus improving image quality while controlling overall device volume.

The patent assigns different optical properties to different lens elements based on their specific positions in the concentric arrangement. Each lens element has customized curvature, thickness, and material characteristics tailored to its local role in the optical system. This localized optimization allows the system to achieve high light sensitivity through larger aperture while controlling aberrations through precise local design of each element.

The patent employs multiple lens materials with different refractive indices and aberration characteristics arranged in a composite optical system. By selecting appropriate materials for each lens element's specific function and position, the design achieves both high light sensitivity and effective aberration correction, leveraging the complementary properties of different optical materials.