Eight-Lens Wide-Angle Assembly for Compact FOV and Resolution
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Solution Overview
Problem
Current wide-angle lens assemblies struggle to simultaneously achieve a large field of view, miniaturization, and high resolution, while maintaining good optical performance.
Innovation Solution
The wide-angle lens assembly is designed with a specific configuration of eight lenses, including meniscus lenses with negative and positive refractive powers, arranged along an optical axis with air gaps between them, to enhance field of view, reduce total lens length, and improve resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the field of view is increased, then the lens length increases, but miniaturization is compromised
Solution Approach 1:
The lens assembly is divided into eight individual lens elements (first lens through eighth lens) with air gaps between them, allowing each element to contribute differently to the overall optical function. This segmentation enables achieving a wide field of view while controlling the total lens length by optimizing each individual element's contribution.
Solution Approach 2:
Each lens element has specific refractive power characteristics (positive or negative) and surface configurations (convex or concave) tailored to its position in the optical path. For example, the first lens is a meniscus lens with negative refractive power, while the third and fourth lenses have positive refractive power, creating localized optical corrections that collectively achieve wide field of view with compact length.
2Measurement precision
If the number of lenses is increased to improve resolution, then the device complexity increases
Solution Approach 1:
The resolution improvement is achieved through segmentation into eight lens elements, each with specific optical properties. This allows complex optical corrections for high resolution to be distributed across multiple simpler individual elements rather than requiring a single complex lens, making the overall system more manageable despite the increased number of components.
Solution Approach 2:
The patent specifies particular parameter ranges for each lens element, including refractive power (positive or negative), surface curvature (convex or concave), and spacing (air gaps). By optimizing these parameters systematically, high resolution is achieved while the complexity is controlled through standardized design rules for each element type.
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 the field of view, decreases the total lens length, and enhances resolution while maintaining good optical performance, addressing the limitations of existing wide-angle lens assemblies.
Implementation Method 1
The first lens is a meniscus lens with negative refractive power. The second lens is a meniscus lens with refractive power... The third lens is with positive refractive power...
Data Source
AI summary
A wide-angle lens assembly includes a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth lenses, all of which are arranged in order from an object side to an image side along an optical axis and are spaced apart with air gaps formed therebetween. The first lens is a meniscus lens with negative refractive power. The second lens is a meniscus lens with refractive power and includes a concave surface facing the object side and a convex surface facing the image side. The third lens and the fourth lens are with positive refractive power. The fifth lens is with negative refractive power. The sixth lens is with refractive power. The seventh lens is with positive refractive power and includes a convex surface facing the image side. The eighth lens is with refractive power and includes a convex surface facing the object side.