Six-Lens Optical System Aberration Control
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Solution Overview
Problem
Traditional optical image capturing systems for portable electronic devices face challenges in achieving high imaging quality with increased pixel count, large aperture, and wide view angle, due to issues like aberration and distortion, which complicates manufacturing and image formation.
Innovation Solution
The optical image capturing system employs a combination of six-piece optical lenses with specific refractive powers, convex and concave surfaces, and inflection points to enhance light intake and view angle, correcting aberrations and improving imaging quality, while being compact enough for miniaturized electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the aperture is increased to improve light intake and imaging quality, then the quantity of incoming light increases, but aberration increases resulting in deterioration of quality in peripherical image formation
Solution Approach 1:
The optical system is divided into six separate lens elements with different refractive powers and surface curvatures. Each lens element is optimized to handle specific portions of the light cone, allowing the system to maintain a large aperture while correcting aberrations through the combined action of multiple elements rather than relying on a single element that would need to be excessively complex
Solution Approach 2:
Different lens elements are assigned different local optical properties - some with positive refractive power and convex surfaces, others with negative refractive power and concave surfaces. The object-side and image-side surfaces of each element have specifically designed curvatures to correct aberrations in different regions of the optical field, ensuring high image quality across the entire periphery while maintaining large aperture
2Adaptability or versatility
If the view angle is increased to improve wide-angle imaging capability, then the view angle increases, but distortion rate increases resulting in deterioration of image formation quality
Solution Approach 1:
The wide-angle light cone is divided and handled by six different lens elements, each optimized for specific angular ranges. This segmentation allows the system to achieve a wide overall view angle while each individual element operates within its optimal range, minimizing distortion through the cumulative correction effect of all elements
Solution Approach 2:
The lens elements feature locally optimized surface curvatures - with object-side surfaces and image-side surfaces having different radius of curvature relationships. This local quality variation allows each element to correct distortion in its specific operational zone, enabling the system to maintain high image quality across the entire wide field of view
3Measurement precision
If the pixel count is increased to improve imaging quality and resolution, then the total pixels increase, but the requirement for manufacturing precision and aberration control increases
Solution Approach 1:
By dividing the optical system into six elements with distributed refractive powers, the aberration correction burden is segmented across multiple components. This allows each element to be manufactured with moderate precision while the cumulative effect of all elements achieves the high imaging quality needed for high-pixel sensors, reducing the manufacturing precision requirement for any single element
Solution Approach 2:
Each lens element is designed with locally optimized surface curvatures and refractive powers tailored to correct specific types of aberrations. This local quality optimization allows the system to achieve comprehensive aberration control for high-pixel imaging without requiring excessive manufacturing precision, as each element addresses specific aberration components in its designated zone
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
This configuration effectively increases pixel count and imaging quality, reduces aberration, and allows for dual-mode focus on visible and infrared light, making it suitable for high-resolution imaging in various lighting conditions.
Implementation Method 1
a first, second, third, fourth, fifth and sixth lens elements with refractive power
Data Source
AI summary
A six-piece optical lens for capturing image and a six-piece optical module for capturing image are provided. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power and a sixth lens with refractive power. At least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.