Six-Element Optical Lens Assembly for Compact Wide-Angle Imaging
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Solution Overview
Problem
Conventional camera modules face challenges in miniaturization, image quality, and environmental durability, particularly in automotive applications, due to limitations in lens shape, material selection, and sensitivity to environmental conditions.
Innovation Solution
An optical imaging lens assembly with six lens elements, featuring specific refractive powers and curvature radii, including aspheric surfaces and cemented elements, to achieve a compact, high-quality lens system with wide field of view and improved aberration correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional lens shapes and materials are used, then manufacturing is simpler, but miniaturization and image quality cannot be achieved
Solution Approach 1:
The patent employs aspheric lens surfaces instead of conventional spherical surfaces. The aspheric design allows for better light ray control and aberration correction, enabling miniaturization while maintaining high image quality. The curved aspheric surfaces optimize the optical path within a compact form factor.
Solution Approach 2:
The patent uses cemented lens elements combining different materials with specific refractive indices and Abbe numbers. This composite approach allows for superior aberration correction and optical performance in a compact design, resolving the contradiction between miniaturization and manufacturing complexity.
2Volume of moving object
If lens assembly is miniaturized, then compact size is achieved, but environmental durability and heat resistance deteriorate
Solution Approach 1:
The patent carefully selects and optimizes optical parameters including refractive indices, Abbe numbers, and curvature radii of lens elements. These parameter changes enable the design of a compact lens assembly with six elements that maintains high environmental durability and heat resistance through optimized optical characteristics rather than increased size.
3Manufacturing precision
If more lens elements are added for better image quality, then aberration correction improves, but device complexity increases
Solution Approach 1:
The patent divides the optical system into six distinct lens elements with specific functions. Each element is designed with particular refractive power and surface curvature to address specific aberrations. This segmentation allows for systematic correction of optical defects while maintaining a manageable assembly structure.
Solution Approach 2:
The patent employs cemented lens elements where multiple elements are optically bonded together. This merging reduces the number of air-glass interfaces, minimizes internal reflections, and simplifies the overall assembly structure while maintaining superior aberration correction capabilities.
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 lens assembly provides high image quality, wide field of view, and resistance to environmental changes, enhancing performance in various conditions, including low light and temperature variations.
Implementation Method 1
The six lens elements are, 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 with negative refractive power has an image-side surface being concave in a paraxial region thereof.
Data Source
AI summary
An optical imaging lens assembly includes six lens elements which are, 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 with negative refractive power has an image-side surface being concave in a paraxial region thereof. The fifth lens element has negative refractive power. The sixth lens element has positive refractive power.