Six-element Camera Lens with Glass-Plastic Hybrid Elements
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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, where the shrinking pixel size of photosensitive devices and increasing demand for high imaging quality require more complex lens structures.
Innovation Solution
A six-piece camera optical lens design is proposed, with specific refractive power, curvature radius, and thickness conditions for each lens element, including a combination of glass and plastic materials, to achieve ultra-thin and wide-angle capabilities while correcting aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a three-piece or four-piece lens structure is used, then the lens can be manufactured with simpler structure, but the imaging quality and chromatic aberration correction are insufficient
Solution Approach 1:
The lens system is divided into six distinct lens elements (L1-L6), each with specific optical properties and functions. This segmentation allows each element to contribute to correcting specific types of aberrations, achieving superior imaging quality and chromatic aberration correction that cannot be obtained with fewer elements.
Solution Approach 2:
The patent employs a combination of different materials for the lens elements, including glass and plastic materials with different refractive indices and dispersion characteristics. This composite material approach enables effective correction of chromatic aberrations while maintaining the desired optical performance.
2Manufacturing precision
If more lens elements are added to improve imaging quality, then the chromatic aberration correction improves, but the lens thickness and device size increase
Solution Approach 1:
The patent optimizes various parameters of the lens elements including curvature radii (R1-R12), thicknesses (d1-d6), and refractive powers (f1-f6) to achieve the desired optical performance with minimized thickness. The specific parameter ranges and relationships defined in the patent enable compact lens design while maintaining superior chromatic aberration correction.
Solution Approach 2:
Each lens element is designed with specific local optical properties tailored to its position in the system. The first lens element has positive refractive power with specific curvature characteristics, while subsequent elements have varying properties optimized for their specific functions in the optical path, enabling efficient space utilization.
3Volume of moving object
If the pixel size of photosensitive devices shrinks to achieve miniaturization, then the device size decreases, but the requirement for imaging quality and chromatic aberration correction becomes more stringent
Solution Approach 1:
The six-element lens structure provides sufficient degrees of freedom to correct various optical aberrations that become more pronounced with smaller pixel sizes. Each element contributes to optimizing the optical performance for the specific application requirements of miniaturized devices with high-resolution sensors.
Solution Approach 2:
The patent defines specific parameter relationships and ranges that optimize the lens performance for miniaturized applications. By carefully controlling parameters such as the focal length ratios, curvature radii, and thickness proportions, the lens achieves superior imaging quality suitable for small pixel size sensors while maintaining compact dimensions.
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 an ultra-thin camera optical lens with excellent optical characteristics and fully corrected on-axis and off-axis chromatic aberrations, maintaining miniaturization and high imaging quality.
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 arranged from the object side to the image side
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 glass material, the second lens is made of plastic material, the third lens is made of plastic 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.