Imaging Lens Assembly Frustum Spacing for Environmental Stability
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Solution Overview
Problem
Existing imaging lens assemblies in portable electronic devices face challenges in maintaining assembling stability under varying environmental conditions, particularly due to temperature and humidity fluctuations, leading to potential interference and deformation of optical elements.
Innovation Solution
The imaging lens assembly incorporates space adjusting structures with frustum surfaces, spatial frustum surfaces, and corresponding structures, allowing for adjustable spacing and alignment between lens elements to accommodate environmental variations, thereby preventing interference and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lens elements are fixed rigidly in the lens barrel, then assembling precision is maintained under controlled conditions, but the imaging lens assembly cannot adapt to environmental variations causing interference and deformation
Solution Approach 1:
The patent applies the dynamics principle by designing space adjusting structures that enable dynamic adjustment of spacing between lens elements. The frustum surfaces and corresponding structures allow the lens assembly to adapt its configuration in response to environmental changes, transforming a static rigid structure into a dynamic adaptable system that maintains optical performance across varying conditions.
Solution Approach 2:
The patent implements parameter changes by modifying the spacing parameter between lens elements through the space adjusting structures. The frustum surfaces with specific geometric parameters enable controlled variation of distances between optical components, allowing the system to optimize its optical path length and element spacing in response to temperature and humidity changes while maintaining assembling precision.
2Volume of moving object
If space between lens elements is reduced to minimize assembly size, then device compactness is improved, but environmental variations cause interference between elements
Solution Approach 1:
The patent applies the another dimension principle by introducing angular orientation through frustum surfaces with specific tilt angles. Instead of only adjusting spacing along the optical axis, the frustum structures enable spatial adjustment in multiple dimensions, allowing compact packaging while maintaining sufficient clearance between lens elements to prevent environmental-induced interference.
Solution Approach 2:
The space adjusting structures act as intermediary elements between the lens elements and the lens barrel. These structures mediate the spacing relationships, providing controlled clearance that prevents interference while maintaining compact overall dimensions. The frustum surfaces and corresponding structures serve as buffering intermediaries that absorb environmental variations.
3Reliability
If lens elements are made with larger clearance to prevent interference, then reliability under environmental conditions is improved, but device size increases
Solution Approach 1:
The patent applies the spheroidality principle through the use of frustum surfaces with curved or angled geometries instead of simple cylindrical spacing structures. The frustum shapes enable more efficient spatial utilization, providing the necessary clearance for reliability while minimizing the overall axial length of the lens assembly through optimized angular and radial configurations.
4Adaptability or versatility
If complex space adjusting structures are added to accommodate environmental variations, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the space adjusting function into multiple discrete frustum surfaces and corresponding structures positioned at different locations within the lens assembly. Each frustum structure handles specific spacing adjustments for particular lens elements, breaking down the complex adaptation task into manageable modular components that collectively provide environmental compensation.
Data Source
AI summary
An imaging lens assembly includes a first lens element, a second lens element and a lens barrel, and an optical axis passes through the imaging lens assembly. One of the space adjusting structures is formed via a first peripheral portion of the first lens element and a plate portion of the lens barrel, the other one of the space adjusting structures is formed via the first peripheral portion of the first lens element and a second peripheral portion of the second lens element. Each of the space adjusting structures includes a frustum surface, a spatial frustum surface, a corresponding structure and a spatial layer. Each of the frustum surfaces and each of the spatial frustum surfaces are disposed on an object-side surface of the first peripheral portion and an object-side surface of the second peripheral portion, respectively.