Optical Camera Lens Aberration Correction
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Solution Overview
Problem
Conventional six-lens camera lens structures struggle to balance low total track length, large aperture, and low sensitivity while maintaining high imaging quality, especially with reduced pixel areas and increasing user demands for better imaging performance in portable devices.
Innovation Solution
The optical camera lens design incorporates a six-lens structure with specific refractive power and focal length configurations, including positive and negative refractive powers distributed across lenses, along with aspheric surfaces and carefully controlled curvature radii to correct aberrations and reduce sensitivity, while minimizing the total track length and maintaining a wide angle and large aperture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a six-lens structure is adopted to correct optical aberrations and improve imaging quality, then imaging quality is improved, but total track length increases
Solution Approach 1:
The patent applies parameter changes by optimizing the refractive indices, Abbe numbers, and curvature radii of the six lens elements. Specific conditional expressions define the relationships between these parameters (e.g., 1.0 < (f1 + f2)/(f3 + f4 + f5 + f6) < 3.0, where f represents focal length). By precisely controlling these optical parameters within defined ranges, the system achieves effective aberration correction while maintaining a compact total track length suitable for mobile devices.
Solution Approach 2:
The patent employs aspheric surfaces on multiple lens elements to correct optical aberrations more effectively than spherical surfaces. The aspheric shapes allow for better control of light rays, reducing spherical aberration, coma, and other distortions. This enables the six-lens system to achieve high imaging quality with reduced total track length compared to traditional spherical lens designs.
2Measurement precision
If the number of lenses is increased to six to correct optical aberrations, then imaging quality is improved, but device complexity increases
Solution Approach 1:
The patent segments the optical system into six distinct lens elements, each with specific optical characteristics. This segmentation allows independent optimization of each element's refractive index, Abbe number, and surface curvature to correct different types of aberrations. The conditional expressions establish relationships between these segmented elements, ensuring coordinated performance that achieves high imaging quality while managing system complexity through systematic design.
3Volume of moving object
If pixel size is reduced to enable miniaturization, then device size is reduced, but sensitivity decreases
Solution Approach 1:
The patent addresses the sensitivity issue by optimizing the optical parameters of the six-lens system, including refractive indices (nd1-vd1, nd2-vd2, etc.), Abbe numbers, and focal length relationships. The conditional expressions control these parameters to maximize light transmission and minimize optical losses, thereby maintaining high sensitivity even with reduced pixel sizes. This enables miniaturization while preserving imaging performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design effectively corrects optical aberrations, reduces system sensitivity, and achieves a shorter total track length, ensuring high imaging quality and miniaturization while supporting a wide angle and large aperture, thus addressing the limitations of conventional lens structures.
Implementation Method 1
an optical camera lens, from an object side to an image side, successively includes: an aperture St, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6
Data Source
AI summary
The present disclosure relates to field of optical lens, and discloses an optical camera lens, which, from the object side to the image side, successively includes: an aperture, first, second, third, fourth, fifth, sixth lenses; a curvature radius of an object-side surface of the second lens r3, a curvature radius of an image-side surface of the fourth lens r8, a total track length of the optical camera lens TTL, an image height IH, a curvature radius of an object-side surface of the fifth lens r9, a curvature radius of an image-side surface r10, a focal length of the integral optical camera lens f, focal lengths of the second, third, fourth lens f2, f3, f4 satisfy the relational expressions: −0. 7<r3/r8<−0.5; TTL/IH<1.35; 1.24<(r9−r10)/(r9+r10)<1.4; 1.5<|(f2+f4)/f3|<2.4; −3.5<f2/f<−2.5. The optical camera lens provided by the present disclosure can achieve low TTL, and meanwhile having the advantages of large aperture and low sensitivity.