Six-Element Camera Lens for Ultra-Thin 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 existing lens structures struggle to achieve both miniaturization and high imaging quality.
Innovation Solution
A six-piece camera optical lens design is proposed, comprising lenses made of plastic with specific refractive powers and curvature radii, optimized to achieve a short total optical length and correct aberrations, ensuring ultra-thin and wide-angle capabilities while maintaining miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of lens pieces is increased to improve imaging quality, then chromatic aberration correction and imaging quality improve, but the total optical length increases and the lens becomes thicker
Solution Approach 1:
The patent applies parameter changes by precisely controlling the refractive indices and Abbe numbers of each lens element, along with their respective thicknesses and curvature radii. By optimizing these parameters within specific ranges, the design achieves effective chromatic aberration correction while maintaining a compact total optical length suitable for ultra-thin devices.
Solution Approach 2:
The patent uses composite materials by combining multiple lens elements made from different plastic materials with distinct optical properties (different refractive indices and Abbe numbers). This composite approach allows each lens element to contribute differently to the overall optical correction, achieving superior chromatic aberration control in a compact configuration.
2Length of stationary object
If the lens structure is miniaturized to reduce device size, then the total optical length decreases, but imaging quality and chromatic aberration correction deteriorate
Solution Approach 1:
The patent achieves miniaturization while maintaining imaging quality by carefully adjusting the parameters of each lens element. The specific ranges for refractive indices (1.50-1.70), Abbe numbers (20-60), and thickness ratios are optimized to ensure that even in a compact form factor, the lens system can effectively correct chromatic aberration and maintain sharp imaging.
Solution Approach 2:
The patent applies local quality by assigning different optical properties to different lens elements within the system. Each lens element is designed with specific refractive index and Abbe number characteristics tailored to its position and function in the optical path, allowing the compact system to achieve comprehensive aberration correction through localized optimization of each component.
3Adaptability or versatility
If the lens is designed for wide-angle viewing to increase field of view, then the angular coverage improves, but optical aberrations increase and imaging quality deteriorates
Solution Approach 1:
The patent controls optical aberrations in wide-angle design by optimizing the curvature radii and thickness parameters of each lens element. The specific parameter ranges are selected to balance the field of view requirement with aberration control, ensuring that even at wide angles, the imaging quality remains high through precise parameter tuning.
Solution Approach 2:
The patent uses composite lens materials with different optical properties to counteract the aberrations inherent in wide-angle designs. By combining lens elements with complementary chromatic and spherical aberration characteristics, the system achieves wide field of view coverage while maintaining image quality across the entire field.
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 excellent optical characteristics, including full correction of on-axis and off-axis chromatic aberrations, resulting in high-quality imaging with a wide field of view and ultra-thin lens structure, suitable for modern handheld devices.
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 first lens L1 has a positive refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a negative refractive power, the fifth lens L5 has a positive refractive power, and the sixth lens L6 has a negative refractive power
Data Source
AI summary
The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, 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 satisfies following conditions: 1.00≤f1/f≤1.50; 25.00≤R5/d5≤35.03, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R11 denotes a curvature radius of an object-side surface of the sixth lens; and d11 denotes an on-axis thickness of the sixth lens. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.