Optical Imaging Lens with Compound Assemblies for Low Distortion
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Solution Overview
Problem
Designing an optical imaging lens that achieves high image quality with low distortion while considering constraints of size and cost, particularly for applications in portable devices and automotive systems where temperature variations affect image quality.
Innovation Solution
The optical imaging lens is composed of multiple assemblies with specific refractive powers, including compound lenses formed by adhering two or more lenses, with aspheric surfaces and a biconvex structure, optimized to maintain performance across visible and infrared spectra, and various temperature conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple lens assemblies with compound lenses are used to improve image quality and reduce distortion, then optical performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The optical imaging lens is divided into five distinct lens assemblies (first through fifth assemblies), each with specific refractive power characteristics. This segmentation allows each assembly to be optimized for particular optical functions, enabling high image quality and low distortion while maintaining manageable complexity through modular design
Solution Approach 2:
The patent combines multiple lenses within assemblies (e.g., compound lenses formed by adhering at least two lenses) to achieve complex optical corrections. This merging approach consolidates multiple optical elements into integrated units that deliver superior image quality without proportionally increasing overall system complexity
2Manufacturing precision
If lens elements are optimized for visible spectrum, then visible light image quality improves, but infrared spectrum performance deteriorates
Solution Approach 1:
The patent specifies refractive index parameters (Nd) and Abbe number parameters (vd) for each lens element that are optimized to perform across both visible and infrared spectra. By carefully selecting and controlling these optical parameters, the lens assemblies achieve high image quality in visible light while maintaining adequate performance in infrared spectrum
Solution Approach 2:
The optical imaging lens is designed with multi-functional capability to operate effectively across different spectral ranges (visible and infrared) and temperature conditions. The lens assemblies are configured to provide universal performance for diverse application scenarios including portable devices and automotive systems
3Volume of moving object
If lens structure is optimized for compact size, then device size is reduced, but manufacturing precision and image quality deteriorate
Solution Approach 1:
The patent employs a compact nested arrangement where lens assemblies are closely integrated along the optical axis with minimized spacing. The compound lenses within assemblies are adhered together in a nested configuration, achieving space-efficient design that maintains high image quality despite reduced overall lens size
Solution Approach 2:
The patent utilizes aspheric surfaces on multiple lens elements to correct optical aberrations in a more space-efficient manner compared to traditional spherical lenses. This dimensional sophistication in surface geometry allows compact lens design while maintaining or improving image quality
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 enhances image quality by reducing distortion and chromatic aberration, maintaining optimal performance across different temperatures and spectral ranges, thus addressing the challenges of size, cost, and environmental factors.
Implementation Method 1
an optical imaging lens, which provides a better optical performance of high image quality and low distortion... a first optical assembly having negative refractive power, a second optical assembly having negative refractive power, a third optical assembly having positive refractive power... a fourth optical assembly having positive refractive power, and a fifth optical 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 optical assembly, a second optical assembly, a third optical assembly, an aperture, a fourth optical assembly, and a fifth optical assembly, wherein one of the first optical assembly, the second optical assembly, the third optical assembly, the fourth optical assembly, and the fifth optical assembly is a compound lens formed by adhering at least two lenses, while the others are single lenses. The optical imaging lens satisfies 0.07>f56/F>0.015 in both visible spectrum and infrared spectrum, wherein F is a focal length of the optical imaging lens, and f56 is a focal length of the fifth optical assembly, thereby achieving the effect of high image quality and low distortion.