Optical Imaging Lens with Segmented Refractive Power for Low Distortion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional optical imaging lenses fail to meet the increasing demands for high image quality and low distortion, especially due to temperature variations in external environments, and are not adequately miniaturized or lightweight.
Innovation Solution
An optical imaging lens design comprising a first lens assembly with negative refractive power and a second lens assembly with positive refractive power, including specific lens configurations and surface shapes to minimize aberrations and distortion, while maintaining optical stability and ease of manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional optical imaging lenses are used, then the structure is simple and easy to manufacture, but the image quality is poor and distortion is high
Solution Approach 1:
The optical imaging lens is divided into six separate lens elements (L1-L6) with different refractive powers and surface configurations. Each lens element is optimized independently to correct specific types of aberrations, allowing the system to achieve high image quality while maintaining manageable manufacturing complexity through modular design
Solution Approach 2:
Different lens elements have different surface configurations (spherical or aspheric) and refractive powers tailored to their specific functions. For example, L1 and L2 have negative refractive power with specific convex-concave surface configurations to correct certain aberrations, while L3-L6 have positive refractive power with different surface types to address other optical issues, creating locally optimized quality throughout the system
2Manufacturing precision
If more lens elements are added to improve image quality, then optical performance improves, but the volume and weight increase
Solution Approach 1:
The lens system uses a combination of spherical and aspheric surfaces dynamically configured to achieve optimal correction of optical aberrations. The aspheric surfaces on specific lens elements allow for more compact design by correcting multiple types of aberrations simultaneously, reducing the overall volume needed compared to traditional spherical lens systems
Solution Approach 2:
The patent employs lens elements with varying refractive powers (negative for L1-L2, positive for L3-L6) and different surface curvatures to achieve compact arrangement. By carefully selecting and positioning lens elements with specific parameter combinations, the system achieves high image quality in a minimized volume
3Manufacturing precision
If more lens elements are added to improve image quality, then optical performance improves, but the manufacturing and assembly difficulty increases
Solution Approach 1:
The six-lens system is segmented into distinct elements with clearly defined functions and configurations, allowing each to be manufactured and tested independently before final assembly. This segmentation simplifies the manufacturing process by breaking down a complex optical system into manageable components with standardized interfaces
Solution Approach 2:
The patent uses a combination of spherical and aspheric surfaces that balance optical performance with manufacturability. While aspheric surfaces provide superior aberration correction, their application is selectively applied to specific lens elements where they provide the greatest benefit, rather than all elements, thereby managing manufacturing 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 high image quality with low distortion, reduces lens volume and weight, and is easily manufactured, addressing the limitations of conventional lenses.
Implementation Method 1
an optical imaging lens, in order from an object side to an image side along an optical axis, including a first lens assembly having negative refractive power, an aperture, and a second lens assembly having positive refractive power
Data Source
AI summary
An optical imaging lens, in order from an object side to an image side along an optical axis, includes a first lens assembly, an aperture, and a second lens assembly. The first lens assembly has negative refractive power and includes a first lens, a second lens, and a third lens. The first lens has negative refractive power. The second lens has negative refractive power. The third lens has positive refractive power. The second lens assembly has positive refractive power and includes a fourth lens, a fifth lens, and a sixth lens. The fourth lens has positive refractive power. The fifth lens has negative refractive power. The sixth lens has positive refractive power. In this way, the optical imaging lens of the present invention not only could achieve the effect of high image quality and low distortion, but also could reduce the volume of the optical imaging lens.