Nine-Lens Optical Imaging Assembly for Chromatic Aberration
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Solution Overview
Problem
Existing optical imaging lenses face challenges in achieving high image quality while meeting requirements for low distortion, small size, and cost efficiency, particularly in applications such as portable electronic devices, drones, and automotive systems where temperature variations affect image quality.
Innovation Solution
An optical imaging lens design comprising at least nine lenses, including specific refractive powers and configurations of biconcave and biconvex lenses, with two compound lenses to improve chromatic aberration, and incorporating an infrared filter and protective glass for enhanced image fidelity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a lens with high imaging quality is designed, then image quality is improved, but device complexity increases
Solution Approach 1:
The lens system is divided into multiple lens assemblies, with each assembly containing specific lenses with designated refractive powers. The first lens assembly includes a first lens with negative refractive power, a second lens with positive refractive power, and a third lens with negative refractive power. The second lens assembly includes a fourth lens with positive refractive power, a fifth lens with positive refractive power, a sixth lens with negative refractive power, a seventh lens with positive refractive power, an eighth lens with positive refractive power, and a ninth lens with negative refractive power. This segmentation allows each lens to be optimized for specific functions while achieving overall high imaging quality.
Solution Approach 2:
The patent employs compound lenses formed by adhering lens surfaces together, creating composite optical elements with customized refractive properties. The second lens and third lens are adhered to form a compound lens with positive refractive power, while the fifth lens and sixth lens are adhered to form a compound lens with negative refractive power. These composite structures enable precise control over chromatic aberration and overall optical performance.
2Manufacturing precision
If the number of lenses is increased to reduce chromatic aberration, then image quality is improved, but device complexity increases
Solution Approach 1:
The lens system is divided into multiple lens assemblies, with each assembly containing specific lenses with designated refractive powers. The first lens assembly includes a first lens with negative refractive power, a second lens with positive refractive power, and a third lens with negative refractive power. The second lens assembly includes a fourth lens with positive refractive power, a fifth lens with positive refractive power, a sixth lens with negative refractive power, a seventh lens with positive refractive power, an eighth lens with positive refractive power, and a ninth lens with negative refractive power. This segmentation allows each lens to be optimized for specific functions while achieving overall high imaging quality.
Solution Approach 2:
The patent employs compound lenses formed by adhering lens surfaces together, creating composite optical elements with customized refractive properties. The second lens and third lens are adhered to form a compound lens with positive refractive power, while the fifth lens and sixth lens are adhered to form a compound lens with negative refractive power. These composite structures enable precise control over chromatic aberration and overall optical performance.
3Volume of moving object
If a compact lens design is used, then device size is reduced, but imaging quality deteriorates
Solution Approach 1:
The lens assemblies are arranged in a compact configuration where the first lens assembly and second lens assembly are positioned adjacent to each other with an aperture between them. The compound lenses are formed by adhering lens surfaces together, reducing the overall space required. This nested arrangement achieves high imaging quality while maintaining a compact form factor suitable for portable electronic devices.
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 reduced chromatic aberration, ensuring accurate color representation and improved image fidelity across varying temperatures and conditions.
Implementation Method 1
a first lens having negative refractive power, a second lens having positive refractive power, and a third lens having negative 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 consists of, in order from the object side to the image side along the optical axis, a first lens having negative refractive power, a second lens having positive refractive power, and a third lens having negative refractive power. The second lens assembly consists of, in order from the object side to the image side along the optical axis, a fourth lens having positive refractive power, a fifth lens having positive refractive power, a sixth lens having negative refractive power, a seventh lens having positive refractive power, an eighth lens having positive refractive power, and a ninth lens having negative refractive power.