Six-Lens Image Capturing Assembly for Compact Electronic Devices
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Solution Overview
Problem
Conventional optical systems for portable devices struggle to miniaturize lens assemblies, making them unsuitable for the compact size requirements of modern electronic devices.
Innovation Solution
An image capturing assembly comprising six lens elements with specific refractive powers and surface configurations, including positive and negative refractive powers, convex and concave surfaces, and inflection points, optimized to reduce size while maintaining image quality and correcting aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional optical systems are used in portable devices, then image capturing functionality is provided, but the lens assembly size cannot be reduced and miniaturized
Solution Approach 1:
The patent applies parameter changes by optimizing the refractive indices, Abbe numbers, and curvature radii of the six lens elements. Specific parameter ranges are defined (e.g., 0.5 < f1/f < 1.0, 20 < V2 < 60, -5.0 < f2/f < 5.0) to achieve miniaturization while maintaining image quality. This systematic parameter optimization allows the lens assembly to be compact without sacrificing optical performance.
Solution Approach 2:
The patent uses composite material principles by combining lens elements with different refractive indices and Abbe numbers (e.g., combining elements with V2, V3, V5 in specific ranges). This composite approach allows different lens elements to complement each other's optical properties, enabling size reduction while correcting chromatic and spherical aberrations through material diversity.
2Volume of moving object
If lens assembly size is reduced for portable devices, then compactness is achieved, but image quality and aberration correction deteriorate
Solution Approach 1:
The patent segments the optical system into six distinct lens elements, each with specific functions. The first lens element (positive power) handles initial light convergence, while subsequent elements (with alternating positive and negative powers) progressively correct aberrations. This segmentation allows each element to be optimized for specific tasks, achieving compact size without compromising overall image quality.
Solution Approach 2:
The lens elements are designed with multi-functionality where each element serves multiple purposes. For example, the fourth lens element with positive refractive power not only converges light but also helps correct spherical aberration. The sixth lens element with inflection points on its image-side surface simultaneously controls field curvature and distortion. This multi-functionality reduces the need for additional corrective elements, maintaining compact size.
3Manufacturing precision
If six lens elements with specific configurations are used, then image quality and aberration correction are improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics principles through the inflection points on the image-side surface of the sixth lens element. These inflection points create dynamic surface geometry that efficiently corrects field curvature and distortion. The aspheric surfaces with defined curvature radii also provide dynamic light path control, achieving superior aberration correction without requiring additional lens elements, thus managing complexity.
Solution Approach 2:
The patent converts potential harmful effects into benefits by using negative refractive power elements (second, third, and fifth elements) to counterbalance the positive power elements. The chromatic aberration introduced by high-power elements is converted into a corrective opportunity by strategically placing elements with complementary Abbe numbers (V2, V3, V5 in specific ranges), transforming what would be optical defects into correction mechanisms.
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 solution enables a compact image capturing assembly that enhances image quality, corrects aberrations, and improves the angle of view, making it suitable for compact electronic devices without increasing size.
Implementation Method 1
The first lens element has positive refractive power. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element has an image-side surface being concave.
Data Source
AI summary
An image capturing assembly includes six lens elements, the six lens elements being, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element has an image-side surface being concave. The sixth lens element has an image-side surface being concave, wherein the image-side surface of the sixth lens element includes at least one inflection point.