Lens Module Light-Shielding Sheet Tolerance for Flare Reduction
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Solution Overview
Problem
Large outer diameters of light-shielding sheets in lens modules cause instability and lead to line glare due to gaps between the sheets and fixing components, resulting in suboptimal image quality.
Innovation Solution
The lens module design incorporates light-shielding sheets with outer diameters that differ by 0.01-0.02 mm from the inner diameters of the lens cone, ensuring stable installation by preventing folding and maintaining a precise fit, thereby enhancing image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the outer diameter of the light-shielding sheet is increased to improve light shielding coverage, then the light shielding effect is improved, but the sheet becomes easily folded and unstable in installation
Solution Approach 1:
The patent applies parameter changes by precisely controlling the outer diameter of the light-shielding sheet to be 0.01-0.02 mm smaller than the inner diameter of the lens cone. This dimensional parameter adjustment prevents folding while maintaining effective light shielding coverage, resolving the contradiction between shielding effectiveness and installation stability.
2Object-affected harmful factors
If the outer diameter of the light-shielding sheet is too large, then light shielding coverage is improved, but gaps are generated between the sheet and fixing component
Solution Approach 1:
The patent employs parameter changes by optimizing the dimensional relationship between the light-shielding sheet and lens cone to a tolerance range of 0.01-0.02 mm. This precise parameter control ensures both adequate light shielding coverage and elimination of gaps that would compromise manufacturing precision.
3Stability of the object's composition
If the outer diameter of the light-shielding sheet is reduced to improve installation stability, then installation stability is improved, but light shielding coverage is reduced
Solution Approach 1:
The patent resolves this contradiction through parameter changes by determining the optimal dimensional range where the sheet outer diameter is 0.01-0.02 mm smaller than the cone inner diameter. This parameter optimization achieves both installation stability and sufficient light shielding coverage simultaneously.
Data Source
AI summary
A lens module capable of reducing flare includes a lens cone, a lens group, and a light-shielding sheet group. The lens group comprises a plurality of lenses formed from an object side of the lens module to an image side of the lens module. The light-shielding sheet group comprises a plurality of light-shielding sheets. The plurality of light-shielding sheets is embedded between each adjacent two lenses of the plurality of lenses. A difference value between an inner diameter of the lens cone corresponding to a first light shielding sheets arranged from the image side to the object side and an outer diameter of the first light shielding sheets arranged from the image side to the object side is greater than 0.01 mm and less than 0.02 mm. The disclosure also relates to an electronic device.