Nine-Lens Camera Optical System for Large Aperture and Wide-Angle Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current camera optical lenses with a nine-piece structure fail to meet design requirements for large aperture, ultra-thin, and wide-angle imaging due to unreasonable optical focal length, lens spacing, and shape, leading to suboptimal optical performance.
Innovation Solution
A camera optical lens design comprising nine lenses with specific refractive powers and curvature radii, optimized by satisfying a set of conditions for focal lengths, on-axis thicknesses, and curvature ratios, which balances spherical aberration, field curvature, and achieves ultra-thin and wide-angle capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a nine-piece lens structure is adopted to improve optical performance, then imaging quality is improved, but the lens cannot meet design requirements for large aperture, ultra-thin, and wide-angle due to unreasonable optical focal length, lens spacing, and shape
Solution Approach 1:
The patent applies parameter changes by systematically optimizing the optical focal lengths, lens spacing, and shapes of all nine lenses. Specific conditions are imposed on focal length ratios (e.g., −5.50≤f1/f≤−2.00), thickness ratios (e.g., 0.02≤d1/TTL≤0.11), and curvature ratios to achieve the desired balance between imaging quality, aperture, thinness, and wide-angle capability.
Solution Approach 2:
The patent employs dynamics by designing a flexible lens structure where the spacing between lenses and the curvature of lens surfaces can be adjusted within specific ranges. This allows the optical system to adapt to different imaging requirements while maintaining good optical characteristics, enabling the lens to meet diverse design requirements for aperture, thinness, and wide-angle.
2Volume of moving object
If the pixel size of photosensitive devices is reduced to meet miniaturization requirements, then device compactness is improved, but the requirement for imaging quality becomes more stringent and harder to achieve
Solution Approach 1:
The patent applies segmentation by dividing the optical system into nine distinct lens elements, each with specific refractive powers and functions. This segmented approach allows for more precise control over optical aberrations and enables the system to maintain high imaging quality despite the miniaturization constraints imposed by smaller pixel sizes.
Solution Approach 2:
The patent employs composite materials by using lenses with different refractive indices and optical properties arranged in a specific sequence. The combination of lenses with varying characteristics (positive and negative refractive powers, different curvatures) creates a composite optical system that can correct aberrations and maintain imaging quality in a compact form factor.
3Device complexity
If traditional three-piece to six-piece lens structures are used, then device complexity is reduced, but imaging quality and functional requirements are insufficient
Solution Approach 1:
The patent applies segmentation by dividing the optical system into nine distinct lens elements, each with specific refractive powers and functions. This segmented approach allows for more precise control over optical aberrations and enables the system to maintain high imaging quality despite the miniaturization constraints imposed by smaller pixel sizes.
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 optimized lens design achieves excellent optical characteristics, correcting on-axis and off-axis aberrations, enabling a large aperture and wide-angle imaging with improved imaging quality and reduced sensitivity.
Implementation Method 1
a first lens with a negative refractive power; a second lens with a positive refractive power; a third lens with a negative refractive power
Data Source
AI summary
Disclosed is a camera optical lens, including nine lenses, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a negative refractive power, a fourth lens with a positive refractive power, a fifth lens with a negative refractive power, a sixth lens with a positive refractive power, a seventh lens with a negative refractive power, an eighth lens with a positive refractive power and an ninth lens with a negative refractive power. The camera optical lens satisfies: −5.50≤f1/f≤−2.00; 3.00≤d11/d12≤12.00. The camera optical lens has good optical performance, and meets the design requirements of a large aperture, wide-angle and ultra-thin.