Six-Lens Camera Assembly for Wide Field of View and Thin Profile
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Solution Overview
Problem
High-end smartphone camera lens assemblies face challenges in achieving high pixel, high resolution, high relative brightness, and a larger field-of-view while maintaining miniaturization and ultra-thin design requirements.
Innovation Solution
A camera lens assembly comprising six lenses, with specific refractive powers and surface shapes, is designed to achieve a maximal field-of-view of greater than 55 degrees, ultra-thin profile, and high image quality by optimizing the distribution of refractive power, surface curvature, and axial spacing between lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of lenses is increased to achieve high image quality and large field of view, then the imaging performance is improved, but the overall size and thickness of the lens assembly increases
Solution Approach 1:
The lens assembly is divided into six distinct lens elements with alternating positive and negative refractive powers, allowing complex optical functions to be distributed across multiple components. This segmentation enables high image quality correction while managing overall size through modular design
Solution Approach 2:
The patent employs a compact nested arrangement where six lens elements are closely spaced along the optical axis with minimized air gaps. The lenses are nested within a constrained axial space, achieving high optical performance without proportionally increasing assembly thickness
2Adaptability or versatility
If the field of view is enlarged to meet consumer demands, then the viewing capability is improved, but the lens assembly size and complexity increases
Solution Approach 1:
Each lens element is designed with specific local optical properties - alternating positive and negative refractive powers, with carefully controlled surface curvatures and thicknesses. This local optimization of optical characteristics enables wide field of view achievement while managing overall system complexity
Solution Approach 2:
The patent achieves wide field of view by precisely controlling and varying key parameters including refractive power distribution, surface curvature radii, center thicknesses, and axial spacing between lenses. These parameter optimizations enable HFOV≥55° while maintaining manageable complexity through systematic design
3Length of stationary object
If the lens assembly is miniaturized to meet ultra-thin device requirements, then the device thickness is reduced, but the imaging performance and field of view are compromised
Solution Approach 1:
The lens design employs dynamic optimization of optical parameters including variable thickness distributions, adjusted surface curvatures, and optimized spacing between elements. This dynamic parameter tuning enables high imaging performance within ultra-thin constraints
Solution Approach 2:
The patent uses composite lens design combining materials with different refractive indices and dispersion properties to achieve superior image quality correction. This composite approach enables high performance imaging in a miniaturized form factor by maximizing optical efficiency per unit thickness
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
The solution enables a camera lens assembly with a wide field of view, high image quality, and low sensitivity, suitable for portable electronic devices like smartphones, while ensuring good processing characteristics and reduced aberrations.
Implementation Method 1
a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, sequentially from an object side to an image side along an optical axis. The first lens has a negative refractive power; the second lens has a positive refractive power
Data Source
AI summary
A camera lens assembly, sequentially from an object side to an image side along an optical axis, includes: a first lens having a negative refractive power; a second lens having a positive refractive power, an object-side surface thereof is a convex surface, and an image-side surface thereof is a concave surface; a third lens having a positive refractive power, and an object-side surface thereof is a convex surface; a fourth lens having a negative refractive power, and an image-side surface thereof is a concave surface; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, and at least one of an object-side surface and an image-side surface thereof has an inflection point. Half of a maximal field-of-view HFOV of the camera lens assembly satisfies: HFOV≥55°.