Six-Lens Camera Module with Glass Element for Miniaturization

The patent applies parameter changes by precisely controlling the refractive powers, focal lengths, and surface curvatures of each lens element. The conditional expressions (e.g., -1.5<f1/f3<0, 0.5<f2/f3<1.5) define optimal parameter ranges that enable six lenses to achieve superior imaging quality without requiring more elements. This systematic parameter optimization allows the system to resolve the contradiction between imaging quality and device complexity.

The patent employs composite material strategies by combining different lens materials with varying refractive indices and Abbe numbers. Specific lenses use glass materials while others use plastic, creating a composite optical system that corrects chromatic and spherical aberrations more effectively. This material diversity enables six lenses to achieve imaging quality comparable to systems with more elements.

The patent applies dimensionality change by utilizing complex aspherical surface geometries instead of simple spherical surfaces. The aspherical surfaces (described by polynomial equations with multiple coefficients) enable the six-lens system to achieve wide angle capability and high imaging quality in a compact form factor. This geometric complexity in two dimensions compensates for the reduced number of elements in the third dimension (length).

The patent extensively uses curved and aspherical surfaces throughout the lens system. The object-side and image-side surfaces of multiple lenses are configured as aspherical surfaces with specific curvature profiles defined by mathematical equations. This curvature optimization enables light rays to be precisely controlled through the compact six-lens system, maintaining high imaging quality and wide angle performance despite miniaturization.

The patent applies segmentation by dividing the total refractive power requirement into six separate lens elements, each contributing a portion of the overall wide angle capability. No single lens element needs extremely high refractive power, which would cause severe aberrations. Instead, the refractive power is distributed across multiple elements with moderate individual powers, and their combined effect achieves the desired wide angle performance with controlled aberrations.

The patent converts the potentially harmful effect of high refractive power (which causes optical aberrations) into a beneficial outcome by using negative-powered lenses strategically positioned in the optical path. The negative lenses (first, fourth, and sixth lenses) counterbalance the positive power of other elements, correcting spherical and chromatic aberrations while maintaining wide angle capability. This transforms the aberration problem into a correction opportunity.