Miniaturized Wide-Angle Camera Lens Assembly Design
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Solution Overview
Problem
Current cellphone lens assemblies face challenges in achieving both a large field of view and high resolution while maintaining miniaturization, compactness, and low aberration levels, which are essential for dual camera technology.
Innovation Solution
A miniaturized wide-angle camera lens assembly is designed with a specific configuration of lenses, including a first lens with negative refractive power and a third lens with positive refractive power, along with optimized radii of curvature and thicknesses, to achieve a balanced refractive power and correct various aberrations, ensuring high image quality and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a wide-angle lens assembly is used to achieve a large field of view, then the field of view angle increases, but the resolution and image quality deteriorate
Solution Approach 1:
The lens assembly 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 work together to correct aberrations while maintaining wide-angle performance. Each group is optimized for specific functions to balance field of view and image quality
Solution Approach 2:
The patent specifies precise parameter ranges including focal length ratios (f1/f within -6 to -4), radius of curvature ratios (R1/R5 within 1 to 1.5), and spacing ratios (d12/d34 within 0.5 to 1.2) to optimize the balance between wide field of view and high image quality
2Manufacturing precision
If a telephoto lens assembly is used to achieve high resolution, then the resolution improves, but the field of view angle decreases
Solution Approach 1:
The lens assembly 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 work together to correct aberrations while maintaining wide-angle performance. Each group is optimized for specific functions to balance field of view and image quality
Solution Approach 2:
The patent specifies precise parameter ranges including focal length ratios (f1/f within -6 to -4), radius of curvature ratios (R1/R5 within 1 to 1.5), and spacing ratios (d12/d34 within 0.5 to 1.2) to optimize the balance between wide field of view and high image quality
3Manufacturing precision
If multiple lenses are added to correct aberrations and improve image quality, then the image quality increases, but the total length and complexity of the lens assembly increase
Solution Approach 1:
The patent specifies precise parameter ranges including focal length ratios (f1/f within -6 to -4), radius of curvature ratios (R1/R5 within 1 to 1.5), and spacing ratios (d12/d34 within 0.5 to 1.2) to optimize the balance between wide field of view and high image quality
Solution Approach 2:
The lens groups are designed with adjustable spacing between them, allowing the optical system to dynamically adapt to different imaging requirements while maintaining compact form factor and correcting various aberrations
4Length of moving object
If the lens assembly is miniaturized to achieve compactness, then the total length decreases, but the aberration control and image quality deteriorate
Solution Approach 1:
The patent specifies precise parameter ranges including focal length ratios (f1/f within -6 to -4), radius of curvature ratios (R1/R5 within 1 to 1.5), and spacing ratios (d12/d34 within 0.5 to 1.2) to optimize the balance between wide field of view and high image quality
Solution Approach 2:
The lens groups are designed with adjustable spacing between them, allowing the optical system to dynamically adapt to different imaging requirements while maintaining compact form factor and correcting various aberrations
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 effectively shortens the total length of the lens assembly, ensures miniaturization, corrects aberrations, and improves image quality, enabling a larger field-of-view angle while maintaining high resolution.
Implementation Method 1
The first lens has a negative refractive power
Implementation Method 2
The third lens has a positive refractive power
Implementation Method 3
The sixth lens has a negative refractive power
Data Source
AI summary
The present disclosure describes a camera lens assembly. The camera lens assembly comprises, sequentially along an optical axis from an object side to an image side, the first to the seventh lenses. The first lens has a negative refractive power, and an object side surface of the first lens is a convex surface. The third lens has a positive refractive power, and an object side surface of the third lens is a convex surface. The sixth lens has a negative refractive power, and an image side surface of the sixth lens is a concave surface. The second lens, the fourth lens and the fifth lens respectively have a positive refractive power or a negative refractive power. An effective radius of the object side surface of the first lens DT11 and an effective radius of an object side surface of the second lens DT21 may satisfy: 1<DT11/DT21<1.5.