Five-Lens Camera Optical Lens Miniaturization and Chromatic Aberration Control
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Solution Overview
Problem
There is a growing demand 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 imaging quality requirements are not adequately met by existing lens structures.
Innovation Solution
A five-piece camera optical lens design comprising lenses made of different materials (plastic and glass) with specific refractive powers, thicknesses, and curvature radii, optimized to minimize system length and improve imaging quality, while reducing chromatic aberration and maintaining miniaturization characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the pixel size of photosensitive devices is shrunk to achieve miniaturization, then the device size is reduced, but the imaging quality deteriorates
Solution Approach 1:
The lens system is divided into multiple lens elements (at least five lenses) with different optical powers and materials. This segmentation allows each lens element to contribute to correcting specific aberrations, thereby maintaining imaging quality while enabling miniaturization of the overall device.
Solution Approach 2:
The patent employs lens elements made of different materials (plastic and glass) with different Abbe numbers. This composite material approach enables effective correction of chromatic aberration and other optical distortions, ensuring high imaging quality in the miniaturized lens system.
2Device complexity
If a three-piece or four-piece lens structure is used, then the device is simpler, but the chromatic aberration correction is insufficient
Solution Approach 1:
The lens system is divided into at least five lens elements with different optical powers and materials, allowing each element to contribute to correcting specific aberrations including chromatic aberration, thereby improving imaging quality beyond what simpler lens structures can achieve.
Solution Approach 2:
The patent employs lens elements made of different materials (plastic and glass) with different Abbe numbers arranged in a multi-element configuration, enabling effective correction of chromatic aberration through the complementary optical properties of the combined materials.
3Length of moving object
If the lens system is miniaturized, then the device becomes thinner and smaller, but the optical characteristics deteriorate
Solution Approach 1:
The lens system is divided into at least five lens elements with different optical powers and materials, allowing each element to contribute to correcting specific aberrations. This segmentation enables the system to maintain excellent optical characteristics including wide-angle performance and chromatic aberration correction while achieving miniaturization with a total length of less than 4.5mm.
Solution Approach 2:
The patent employs lens elements made of different materials (plastic and glass) with different Abbe numbers arranged in a multi-element configuration, enabling effective correction of chromatic aberration and other optical distortions within a miniaturized form factor.
4Measurement precision
If more lens elements are added (five-piece, six-piece, seven-piece), then the imaging quality improves, but the device complexity increases
Solution Approach 1:
The lens system is divided into at least five lens elements with different optical powers and materials, allowing each element to contribute to correcting specific aberrations. This segmentation achieves excellent imaging quality and chromatic aberration correction while avoiding the excessive complexity of six or seven element designs.
Solution Approach 2:
The patent employs lens elements made of different materials (plastic and glass) with different Abbe numbers arranged in a multi-element configuration, enabling effective correction of chromatic aberration and other optical distortions with an optimized five-element structure that balances performance and complexity.
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 better imaging quality, reduced system length, and improved performance in low-illumination environments, making it suitable for high-pixel portable cameras with a large aperture, while effectively controlling refractive power and chromatic aberration.
Implementation Method 1
from the object side to the image side, the camera optical lens comprises in sequence: an aperture stop, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens
Data Source
AI summary
The present disclosure discloses a camera optical lens. The camera optical lens includes, in an order from an object side to an image side, an aperture stop, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The camera optical lens further satisfies specific conditions.