Optical Imaging Lens Assembly with Focus Tunable Component
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Solution Overview
Problem
Existing photographing modules face challenges in achieving compact size, easy assembly, and high image quality due to physical structure limitations, which hinder the reduction of module size and complicate the assembly process.
Innovation Solution
The optical imaging lens assembly incorporates a focus tunable component and an imaging lens system with a specific configuration, including multiple lens elements with aspheric surfaces and inflection points, to achieve auto-focusing and optical image stabilization while maintaining a compact size and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional photographing modules use traditional lens structures to achieve auto-focusing and optical image stabilization, then image quality can be maintained, but the module size cannot be reduced and assembly becomes more difficult
Solution Approach 1:
The lens assembly is divided into multiple lens groups (first lens group with object-side first and second lens elements, second lens group with image-side first and second lens elements) that can be independently designed and assembled. This segmentation allows for compact configuration while maintaining ease of assembly through modular construction
Solution Approach 2:
The patent employs a nested structure where lens elements are arranged in concentric or stacked configurations, with the focus tunable component integrated within the lens group structure. This nesting approach maximizes space utilization and reduces overall module volume while keeping assembly straightforward through pre-integrated modules
2Manufacturing precision
If the lens system uses complex aspheric surfaces with inflection points to improve image quality, then optical performance increases, but manufacturing and assembly become more difficult
Solution Approach 1:
The patent specifies precise parameters for the aspheric surfaces including curvature radius (RLr2f, RLr2r), axial distances (DLr1Lr2), and thickness values (CTLr1) that are optimized to achieve high image quality. By carefully controlling these parameters within defined ranges, the patent balances optical performance with manufacturability
Solution Approach 2:
The patent employs aspheric surfaces with specific curvature characteristics including inflection points to correct optical aberrations and improve image quality. The curved surfaces are designed with controlled parameters that maintain manufacturability while achieving superior optical performance
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 proposed solution enables the optical imaging lens assembly to achieve high image quality, compact size, and easy assembly, addressing the limitations of existing technologies by allowing for adjustable focal length and optical image stabilization.
Implementation Method 1
at least one lens surface of at least one lens element in the imaging lens system is aspheric and has at least one inflection point
Data Source
AI summary
An optical imaging lens assembly includes a focus tunable component and an imaging lens system. The imaging lens system includes, in order from an object side to an image side, a first lens group and a second lens group. The first lens group includes, in order from the object side to the image side, an object-side first lens element and an object-side second lens element. The second lens group includes, in order from the image side to the object side, an image-side first lens element and an image-side second lens element. At least one lens surface of at least one lens element in the imaging lens system is aspheric and has at least one inflection point. The imaging lens system has a total of at least four lens elements.