Six-Element Optical Imaging Lens Miniaturization
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Solution Overview
Problem
The challenge lies in designing an optical imaging lens that balances miniaturization with desirable imaging quality and field of view while maintaining a reduced system length, as scaling down existing lenses does not adequately address consumer demands for lighter, thinner, and smaller electronic products.
Innovation Solution
The optical imaging lens is designed with a specific arrangement of six lens elements, featuring concave and convex surface shapes along the optical axis, which includes a first lens element with a concave object-side surface and a convex periphery, and subsequent elements with varying refracting powers and surface curvatures, satisfying specific ratios of thickness and air gaps to enhance optical performance and field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lens is scaled down to reduce system length, then the system length is reduced, but the imaging quality deteriorates
Solution Approach 1:
The patent applies local quality by giving different surface curvature characteristics to different regions of the lens elements. Specifically, the first lens element has a concave object-side surface, the third lens element has a concave image-side surface, and the fifth lens element has a convex image-side surface. This localized variation in surface geometry allows the compact lens to maintain proper light ray control and image quality despite the reduced overall system length.
Solution Approach 2:
The patent utilizes curvature principles by employing aspheric surfaces on multiple lens elements. The object-side surface of the first lens element, the image-side surface of the third lens element, and the image-side surface of the fifth lens element all feature specific curvature profiles that are optimized to maintain imaging quality in the miniaturized system. These curved surfaces enable effective light ray manipulation within the constrained space.
2Length of moving object
If the lens is scaled down to reduce system length, then the system length is reduced, but the field of view deteriorates
Solution Approach 1:
The patent applies local quality by giving different surface curvature characteristics to different regions of the lens elements. Specifically, the first lens element has a concave object-side surface, the third lens element has a concave image-side surface, and the fifth lens element has a convex image-side surface. This localized variation in surface geometry allows the compact lens to maintain proper light ray control and image quality despite the reduced overall system length.
Solution Approach 2:
The patent employs dimensionality change by optimizing the lateral dimensions and surface curvatures of the lens elements to compensate for the reduced axial length. The specific arrangement of concave and convex surfaces across multiple elements creates effective light ray paths that expand the field of view capability within the miniaturized form factor, utilizing spatial optimization in multiple dimensions rather than simply scaling all dimensions proportionally.
3Length of moving object
If the lens is scaled down to reduce system length, then the system length is reduced, but the aperture size deteriorates
Solution Approach 1:
The patent applies local quality by giving different surface curvature characteristics to different regions of the lens elements. Specifically, the first lens element has a concave object-side surface, the third lens element has a concave image-side surface, and the fifth lens element has a convex image-side surface. This localized variation in surface geometry allows the compact lens to maintain proper light ray control and image quality despite the reduced overall system length.
Solution Approach 2:
The patent employs preliminary action by pre-configuring the surface geometries of the lens elements to optimize light ray paths from the outset. The concave object-side surface of the first lens element and the subsequent convex and concave surfaces are designed in advance to efficiently guide light rays through the compact system while maintaining adequate aperture size. This preliminary optimization of surface profiles ensures that the miniaturized lens can capture sufficient light despite the reduced system length.
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 reduces the system length while maintaining or improving imaging quality and field of view, facilitating the miniaturization of optical imaging lenses and addressing manufacturing complexities.
Implementation Method 1
Each of the first to sixth lens elements includes an object-side surface facing the object side and allowing imaging rays to pass through and an image-side surface facing the image side and allowing the imaging rays to pass through
Data Source
AI summary
An optical imaging lens includes a first, a second, a third, a fourth, a fifth, and a sixth lens elements from an object side to an image side arranged in order along an optical axis. The six lens elements are the only lens elements having refracting power in the optical imaging lens. An optical axis region of an object-side surface of the third lens element is concave. A periphery region of an image-side surface of the fourth lens element is concave. An optical axis region of an image-side surface of the sixth lens element is concave.