Multi-Lens Assembly Venting for Precise Optical Alignment
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Solution Overview
Problem
The expansion of air during the baking process of lens glue in multi-lens assemblies causes misalignment of optical elements, while existing air escape holes introduce dust and dirt, necessitating a solution that prevents contamination while maintaining optical integrity.
Innovation Solution
A method involving the use of first glue to connect lenses, providing an air escape hole for gas discharge during baking, followed by sealing with second glue that cures without baking, thereby preventing dust and dirt ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an air escape hole is added to discharge expanded gas during baking, then the optical alignment is improved, but dust and dirt contamination increases
Solution Approach 1:
The patent divides the sealing process into two stages: first allowing air escape through a controlled opening during baking, then separately sealing the opening after curing. This segmentation resolves the contradiction by separating the air discharge function from the sealing function in time, preventing dust contamination while maintaining optical alignment.
Solution Approach 2:
The patent performs the air escape hole creation and baking process before final sealing. By preliminarily establishing the air discharge path during the critical baking phase, then sealing it afterward, the invention prevents dust contamination while ensuring proper optical alignment was achieved during curing.
2Strength
If baking is performed to completely cure the glue, then the lens connection strength is improved, but the air expansion causes misalignment of optical elements
Solution Approach 1:
The patent extracts the harmful expanded air from the system by providing a dedicated air escape hole during baking. This allows the glue to be fully cured achieving strong lens connection, while the extracted air prevents pressure buildup that would cause optical element misalignment.
Solution Approach 2:
The air escape hole acts as an intermediary mechanism that mediates between the conflicting requirements of complete glue curing and optical alignment maintenance. It provides a controlled path for air discharge, enabling strong bonding without misalignment.
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
Ensures precise optical alignment and protection from contamination by effectively sealing the air escape hole post-curing, enhancing imaging quality and reliability of multi-lens assemblies.
Implementation Method 1
curing the first glue through baking, so that expanded gas is discharged from the air escape hole
Implementation Method 2
the air between upper and lower lens components will expand, and the gas expansion will impact the upper and lower lens components
Implementation Method 3
sealing the air escape hole by using second glue that can be completely cured without baking
Data Source
Figure 1~2
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AI summary
Manufacturing methods for a multi-lens assembly and a camera module with a multi-lens assembly, and the multi-lens assembly and the camera module with a multi-lens assembly manufactured by the corresponding methods are disclosed. According to an implementation, a method for manufacturing a multi-lens assembly comprises the following steps: connecting a first lens and a second lens by using first glue; providing an air escape hole; curing the first glue through baking, so that expanded gas is discharged from the air escape hole; and after the first glue is completely cured, sealing the air escape hole by using second glue that can be completely cured without baking.