Camera Module Lens Barrel Recess for Coupling Member Thickness Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In camera modules for mobile devices, the thickness of the lens barrel is increased due to the presence of a coupling member like a pressing ring, which hinders the reduction of the overall camera thickness while maintaining high magnification and low F-number capabilities.
Innovation Solution
A lens module design where the lens barrel is configured to partially expose and overlap the coupling member, with a width in one direction being smaller than in a perpendicular direction, incorporating a recess to accommodate the coupling member and an adhesive for secure fixation, allowing for a reduced overall thickness without increasing the barrel's width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coupling member such as a pressing ring is used to fix the lens to the lens barrel, then the lens can be securely fixed, but the thickness of the lens barrel increases
Solution Approach 1:
The coupling member is nested within the lens barrel structure, specifically positioned in a recess formed in the lens barrel. This allows the coupling member to be accommodated without increasing the overall thickness of the lens barrel, as it is embedded within the existing structure rather than adding external volume.
Solution Approach 2:
The coupling member is configured with different width dimensions in different directions. It has a first width in a first direction and a second width in a second direction perpendicular to the first direction, where the second width is smaller than the first width. This asymmetric dimensional configuration allows the coupling member to fit within the lens barrel's recess while maintaining adequate fixation capability.
2Length of moving object
If the lens barrel thickness is reduced to meet mobile device requirements, then the overall camera thickness decreases, but the coupling member cannot be properly accommodated
Solution Approach 1:
The lens barrel is segmented with a recess that is specifically designed to accommodate the coupling member. This recess creates a dedicated space within the lens barrel structure, allowing the coupling member to be integrated without increasing the overall barrel thickness. The segmentation of the lens barrel wall creates an internal cavity for the coupling member.
Solution Approach 2:
The coupling member employs asymmetric dimensions with different widths in perpendicular directions. The first width in the first direction matches or is slightly less than the width of the lens barrel, while the second width in the perpendicular direction is smaller, allowing it to fit within the recess. This asymmetric design enables proper accommodation within the constrained thickness.
Data Source
AI summary
A lens module includes a lens barrel; a lens accommodated in the lens barrel; and a coupling member coupled to the lens barrel, disposed on one side of the lens to fix the lens to the lens barrel. A width of the lens in a first direction perpendicular to an optical axis is smaller than a width of the lens in a second direction perpendicular to the optical axis and intersecting the first direction. The lens barrel is disposed to at least partially expose the coupling member in the first direction and to at least partially overlap the coupling member in the second direction.