Six-Lens Optical Imaging Assembly for Wide Field of View
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Solution Overview
Problem
Conventional compact optical systems fail to simultaneously achieve a wide field of view and high image resolution, which is essential for modern electronic devices such as smartphones and cameras.
Innovation Solution
An optical imaging lens assembly comprising six lens elements with specific refractive powers and surface curvatures, including a concave image-side surface with at least one inflection point, and an aperture stop placement that satisfies certain conditions to optimize light path control and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional compact optical systems are used, then the device size is reduced, but the field of view and image resolution cannot be simultaneously achieved
Solution Approach 1:
The optical system is divided into six separate lens elements instead of using fewer cemented elements. Each lens element is independently designed with specific refractive powers and surface curvatures, allowing precise control of optical paths to achieve both wide field of view and high resolution while maintaining compact size
Solution Approach 2:
Different regions of the lens elements have different surface curvatures and refractive properties. The object-side and image-side surfaces of each lens element are designed with specific curvature characteristics (convex or concave in paraxial regions) to optimize light control at different field positions, enabling simultaneous achievement of wide angle and high resolution
2Manufacturing precision
If more lens elements are added to improve image quality and field of view, then the optical system becomes more complex and larger, but compactness is compromised
Solution Approach 1:
The lens elements are designed with aspheric surfaces featuring inflection points, allowing the surface curvature to dynamically vary across different radial positions. This enables a single surface to perform multiple optical functions (correcting spherical aberration, controlling field curvature, managing distortion) without adding more elements
Solution Approach 2:
The patent optimizes specific parameter relationships (such as the ratio of axial distances SD/TD and TL/f) to achieve optimal performance. By carefully controlling these parameters, the system achieves high image quality with exactly six elements, avoiding unnecessary complexity from additional elements
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 provides a compact optical system with a wide field of view and high image resolution, effectively addressing the limitations of conventional systems by enhancing image quality and reducing aberrations while maintaining a compact size.
Implementation Method 1
an optical imaging lens assembly includes, 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
Data Source
AI summary
An optical imaging lens assembly includes, 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 second lens element has positive refractive power. The third lens element has positive refractive power. The fourth lens element has positive refractive power. The fifth lens element has positive refractive power. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the sixth lens element has at least one inflection point. The optical imaging lens assembly has a total of six lens elements.