Nine-Lens Camera Optical Lens for Ultra-Thin Wide-Angle Imaging
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Solution Overview
Problem
Current camera optical lenses with a nine-piece structure face challenges in achieving ultra-thin and wide-angle designs while maintaining good optical characteristics due to unreasonable optical focal length, lens spacing, and lens shape configurations.
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, curvature ratios, and total track lengths, which balances spherical aberration, field curvature, and achieves an ultra-thin and wide-angle effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nine-piece lens structure is used to improve imaging quality, then optical performance is improved, but the lens cannot achieve ultra-thin and wide-angle design requirements
Solution Approach 1:
The patent applies parameter changes by optimizing the focal lengths, curvature radii, and spacing of the nine lenses according to specific mathematical relationships. By changing these optical parameters within defined ranges, the lens achieves both ultra-thin profile and wide-angle capability while maintaining good imaging quality, resolving the contradiction between thickness and optical performance.
2Reliability
If a nine-piece lens structure is used to improve imaging quality, then optical performance is improved, but the lens cannot achieve wide-angle design requirements
Solution Approach 1:
The patent achieves wide-angle capability by changing the optical parameters, particularly the focal lengths and curvature radii of the nine lenses. The specific parameter ranges defined in the patent enable the lens to achieve a wide field of view while correcting aberrations, thus resolving the contradiction between imaging quality and wide-angle design.
3Device complexity
If traditional three-piece, four-piece, or five-piece lens structures are used, then the lens is simpler, but imaging quality is insufficient for high pixel photosensitive devices
Solution Approach 1:
The patent applies preliminary anti-action by proactively designing the nine-piece lens structure with specific parameter relationships that pre-correct for the aberrations introduced by high pixel photosensitive devices. This anticipatory design approach ensures that even as pixel density increases, the lens maintains excellent imaging quality without requiring further structural changes.
4Ease of manufacture
If the optical focal length, lens spacing, and lens shape are arranged traditionally, then the design is conventional, but the lens cannot meet ultra-thin and wide-angle requirements while maintaining good optical characteristics
Solution Approach 1:
The patent changes the conventional optical parameters by defining specific mathematical relationships between the focal lengths, curvature radii, and spacing of the nine lenses. These parameter changes enable the lens to achieve ultra-thin and wide-angle design while maintaining excellent optical characteristics, moving beyond traditional design approaches.
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 effectively corrects on-axis and off-axis aberrations, achieving excellent optical performance and meeting the requirements for wide-angle and ultra-thin configurations, suitable for mobile phone and web camera lenses with high pixel cameras.
Implementation Method 1
a ninth lens with a negative refractive power; wherein the camera optical lens satisfies following conditions: −1.80≤f1/f≤−0.70; 2.00≤d15/d16≤12.00; −3.50≤R17/R18≤−1.50
Data Source
AI summary
The present disclosure relates to an optical lens and discloses a camera optical lens. The camera optical lens includes nine lenses, and the nine lenses from an object side to an image side are: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and an ninth lens. The second lens has a positive refractive power, and the camera optical lens satisfies: −1.80≤f1/f≤−0.70; 2.00≤d15/d16≤12.00; wherein, f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d15 denotes an on-axis thickness of the eighth lens, and d16 denotes an on-axis distance from an image-side surface of the eighth lens to an object-side surface of the ninth lens. The camera optical lens has good optical performance, and meets the design requirements of wide-angle and ultra-thin.