Six-Lens Camera Optical Lens with Mixed Plastic Glass Materials
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Solution Overview
Problem
There is a need for ultra-thin wide-angle camera lenses with good optical characteristics and fully corrected chromatic aberration, particularly for handheld devices like smartphones and digital cameras, where the shrinking pixel size of photosensitive devices and increasing demand for high imaging quality require advanced lens designs.
Innovation Solution
A six-piece camera optical lens structure is designed, comprising lenses made of different materials (plastic and glass) with specific refractive power and curvature radius conditions to achieve ultra-thin and wide-angle capabilities while correcting aberrations, with conditions such as -3≤f1/f≤-1 for the first lens and v3≥60 for the third lens to ensure effective aberration correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a three-piece or four-piece lens structure is used, then the lens can be manufactured with simpler processes, but the imaging quality and chromatic aberration correction are insufficient
Solution Approach 1:
The lens system is divided into six separate lens elements with different materials and functions. This segmentation allows each element to be optimized for specific aberration correction tasks, particularly chromatic aberration, while maintaining overall system manufacturability through modular assembly
Solution Approach 2:
The patent employs composite lens结构设计 combining plastic and glass materials with different Abbe numbers. Specifically, the first lens uses plastic material, while the third lens uses glass material with high Abbe number (v3≥60), creating a composite optical system that corrects chromatic aberration more effectively than single-material designs
2Length of moving object
If the total optical length is reduced for miniaturization, then the lens fits better in handheld devices, but the field curvature and aberration correction become more difficult
Solution Approach 1:
The patent introduces aspherical surfaces on multiple lens elements (first, second, fourth, and sixth lenses) with dynamically optimized curvature radii. These aspherical designs allow the optical system to maintain effective aberration correction and field flatness despite the reduced total optical length, as the variable curvature compensates for the shortened optical path
Solution Approach 2:
The patent optimizes specific parameter ratios including the focal length of the first lens relative to total optical length (-3≤f1/f≤-1), the Abbe number of the third lens (v3≥60), and various curvature radius relationships. These parameter constraints ensure that even in a compact design, the field curvature and other aberrations are properly corrected
3Manufacturing precision
If more lens elements are added to improve imaging quality, then the chromatic aberration correction improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Different lens elements are assigned specific material properties and optical functions tailored to their position in the system. The third lens specifically uses glass material with high Abbe number (v3≥60) to target chromatic aberration correction, while other elements use plastic materials optimized for their local optical requirements, creating a differentiated but manageable six-element structure
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 design results in a camera optical lens with high performance, low total optical length, and excellent imaging quality, maintaining miniaturization characteristics with fully corrected on-axis and off-axis chromatic aberrations and improved field curvature.
Implementation Method 1
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, from the object side to the image side in sequence
Data Source
AI summary
The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of glass material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.