Nine-Lens Camera Optical Lens Aberration Correction
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Solution Overview
Problem
Current miniature camera lenses for handheld devices face challenges in achieving good optical performance, particularly in meeting design requirements for large aperture, ultra-thin, and wide-angle capabilities due to unreasonable optical focal length, lens spacing, and shape configurations in nine-piece lens structures.
Innovation Solution
A camera optical lens design comprising nine lenses with specific refractive powers and curvature radii, optimized by conditions such as focal length ratios, curvature radius ratios, and total track length, to achieve improved imaging quality and aberration correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nine-piece lens structure is adopted to improve imaging quality, then optical performance 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 lens shape arrangements
Solution Approach 1:
The patent applies parameter changes by optimizing specific optical parameters including the focal length ratio of the first lens to the total focal length (f1/f between -1.80 and -0.60), the thickness-to-distance ratio of the third lens (d5/d6 between 2.00 and 8.00), and the focal length ratio of the sixth lens to the total focal length (f6/f between 3.50 and 6.00). These parameter optimizations enable the nine-piece lens structure to achieve large aperture, ultra-thin, and wide-angle design requirements while maintaining good optical performance
2Reliability
If the number of lenses is increased to nine pieces to meet diverse user demands and improve imaging quality, then optical performance is improved, but the lens spacing and shape arrangements become unreasonable
Solution Approach 1:
The patent optimizes manufacturing precision by establishing specific parameter ranges for lens spacing and shape. Key parameters include the on-axis thickness of the third lens (d5), the on-axis distance from the image-side surface of the third lens to the object-side surface of the fourth lens (d6), and their ratio (d5/d6 between 2.00 and 8.00). These optimized parameters enable reasonable lens spacing and shape arrangements that are manufacturable while achieving excellent optical performance
3Length of stationary object
If the lens structure is optimized for ultra-thin design, then total track length is reduced, but it becomes difficult to maintain good optical characteristics with large aperture and wide-angle requirements
Solution Approach 1:
The patent achieves ultra-thin design with excellent optical characteristics by optimizing the parameter d5/d6 (on-axis thickness of third lens to on-axis distance to fourth lens) between 2.00 and 8.00, and the focal length ratio f6/f between 3.50 and 6.00. These parameter optimizations enable the lens to achieve large aperture, wide-angle, and ultra-thin design requirements simultaneously while maintaining good optical performance
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 characteristics, a large aperture, and a wide field of view, suitable for high-pixel camera components in mobile devices.
Implementation Method 1
a first lens having a negative refractive power
Implementation Method 2
a second lens having a positive refractive power
Implementation Method 3
a third lens having a positive refractive power
Implementation Method 4
a fifth lens with a negative refractive power
Implementation Method 5
a sixth lens with a positive refractive power
Implementation Method 6
a seventh lens with a negative refractive power
Implementation Method 7
an eighth lens with a positive refractive power
Implementation Method 8
an ninth lens with a negative refractive power
Data Source
AI summary
Disclosed is a camera optical lens. The camera optical lens includes nine lenses in total, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens, a third lens with a positive refractive power, a fourth lens, 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: −1.80≤f1/f≤−0.60; 2.00≤d5/d6≤8.00; 3.50≤f6/f≤6.00. The camera optical lens has good optical performance, and meets the design requirements of a large aperture, wide-angle and ultra-thin.