Embedded Optical Imaging Lens Assembly Without a Lens Barrel
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Solution Overview
Problem
The challenge is to reduce the size of optical imaging lenses without affecting image height or imaging quality, while ensuring alignment, stability, and meeting quality requirements such as weight reduction, cost reduction, and easy assembly.
Innovation Solution
The optical imaging lens is designed with lens elements embedded and integrally assembled through glue, featuring specific propping and inclined surfaces and glue storage regions that allow for uniform pressure distribution and avoid glue overflow, eliminating the need for a lens barrel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lens size is reduced to meet miniaturization requirements, then the volume and weight are reduced, but the alignment stability and imaging quality deteriorate
Solution Approach 1:
The mounting portion of each lens element is segmented into multiple functional surfaces: a propping surface for mechanical support, an inclined surface for positioning, and multiple glue storage regions for adhesive application. This segmentation allows each surface to perform its specific function optimally, maintaining alignment stability while reducing overall lens volume.
Solution Approach 2:
The mounting portion is pre-formed with specific geometric features (propping surface, inclined surface, and glue storage regions) during lens manufacturing. These pre-formed structures ensure that when lenses are assembled, the alignment and positioning are predetermined and stable, eliminating the need for complex adjustment mechanisms that would increase volume.
2Volume of moving object
If the lens barrel is eliminated to reduce volume, then the device size is reduced, but the protection and positioning functions deteriorate
Solution Approach 1:
The mounting portion integrates multiple functions that were previously performed by separate lens barrel components: positioning (through the propping surface and inclined surface), protection (through the embedded structure), and light shielding (through the radial extension). This merging eliminates the need for a separate lens barrel, reducing overall volume while maintaining all necessary functions.
Solution Approach 2:
Each lens element's mounting portion is self-contained with built-in positioning features (propping surface, inclined surface) and glue storage regions. The structure serves itself by providing all necessary functions for assembly, protection, and alignment without requiring external lens barrel support, thereby achieving reliable positioning without increasing volume.
3Ease of manufacture
If the mounting portion structure is simplified to reduce manufacturing complexity, then the ease of manufacture is improved, but the alignment precision and glue application control deteriorate
Solution Approach 1:
The mounting portion features localized geometric variations: a flat propping surface for support, an inclined surface for angular positioning, and specifically shaped glue storage regions. Each local area has optimized geometry for its specific function, achieving high alignment precision through simple geometric features that are easy to manufacture using standard lens molding techniques.
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 design maintains image height, reduces volume, and satisfies quality requirements by improving alignment and stability, enabling weight reduction, cost savings, and easy assembly.
Implementation Method 1
The lens elements are embedded with each other and are integrally assembled through glue
Data Source
AI summary
An optical imaging lens includes lens elements arranged in sequence along an optical axis from an object side to an image side. Each lens element has an object-side surface facing the object side and an image-side surface facing the image side. Each lens element further includes an optical portion for allowing an imaging ray to pass through and a mounting portion extending radially outwards from an optical boundary. The lens elements are embedded with each other and are integrally assembled through glue. For the lens elements between a first lens element counting from the object side towards the image side and a first lens element counting from the image side towards the object side, the object-side surface of the mounting portion has a first propping surface, a first inclined surface, and at least three glue storage regions. The glue storage regions do not contact one another.