Six-element Camera Lens for Miniaturized Wide-Angle Imaging
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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 better imaging quality require more complex lens structures.
Innovation Solution
A six-piece camera optical lens design is proposed, with specific focal lengths, refractive powers, and thickness conditions for each lens element, made of different materials (plastic and glass), optimized to minimize total optical length and correct aberrations, including spherical and chromatic aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a three-piece or four-piece lens structure is adopted, then the device complexity is low, 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. Each lens element is optimized for specific aberration correction, allowing the system to achieve high imaging quality while maintaining manageable complexity through modular design
Solution Approach 2:
The patent employs a combination of plastic and glass lens materials with different refractive indices and aberration characteristics. This composite material approach enables sophisticated chromatic aberration correction and optical performance optimization without requiring excessive structural complexity
2Volume of moving object
If the pixel size of photosensitive devices is shrunk, then the device miniaturization is achieved, but the imaging quality deteriorates
Solution Approach 1:
The lens design optimizes parameters such as focal length, curvature radius, and thickness ratios to achieve ultra-thin configuration while maintaining optical performance. The specific parameter constraints (e.g., d3/TTL ratio, focal length relationships) are tuned to correct aberrations and preserve imaging quality despite the reduced pixel size and compact form factor
3Length of stationary object
If the total optical length is reduced for miniaturization, then the device thickness is decreased, but the chromatic aberration correction becomes difficult
Solution Approach 1:
By segmenting the optical path into six distinct lens elements, the patent distributes the chromatic aberration correction across multiple stages. Each lens element contributes to correcting specific wavelength deviations, enabling effective aberration control within a compact optical length
Solution Approach 2:
The strategic combination of plastic and glass materials with different dispersion characteristics allows the lens system to correct chromatic aberrations effectively within a reduced optical length. The varying refractive indices and Abbe numbers of the materials work together to balance optical path differences across wavelengths
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 achieves high-performance, ultra-thin, and wide-angle imaging with fully corrected on-axis and off-axis chromatic aberrations, maintaining miniaturization and improving image 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... the refractive power of the second lens L2 is defined as n2... the focal length of the first lens L1 is defined as f1
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 camera optical lens further satisfies specific conditions.