Camera Module Rib Surface Curvature Scattering Flare
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Solution Overview
Problem
The miniaturization of camera modules in mobile communication terminals leads to an increase in flare phenomena due to refracted light being reflected from optical equipment, resulting in reduced image quality, as existing corrosion treatments are limited in diffusely reflecting all incident light.
Innovation Solution
A camera module design featuring a rib surface with a pattern of curved surfaces on the lens and press-fit ring, including protrusion and groove portions with varying inclinations and distances from the optical axis, to induce diffuse reflection and alleviate flare by scattering reflected light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If corrosion treatment is performed on the rib surface to induce diffuse reflection, then flare phenomenon is reduced, but the pattern cannot diffusely reflect all incident light and flare level varies across products
Solution Approach 1:
The patent divides the rib surface into multiple regions (first region, second region, third region) with different pattern characteristics. The first region has a pattern with specific curvature radius range (R1) that provides strong diffuse reflection, the second region has a different pattern (R2) for complementary reflection, and the third region may have yet another pattern. This local differentiation ensures that light incident at different positions and angles is diffusely reflected consistently, resolving the reliability issue of variable flare reduction across products.
Solution Approach 2:
The rib surface pattern is segmented into multiple distinct regions with different geometric characteristics rather than using a single uniform pattern. Each region (first, second, third regions) contains patterns with specific curvature radii and geometric properties that work together to achieve comprehensive diffuse reflection. This segmentation allows the system to handle the complexity of varying light incident angles and positions, ensuring consistent flare reduction across all products.
2Volume of moving object
If the camera module is miniaturized to fit mobile terminals, then device size is reduced, but the frequency of unintentional reflected light beams increases
Solution Approach 1:
The patent applies different pattern characteristics to different regions of the rib surface. The first region contains patterns with curvature radius R1, the second region has patterns with curvature radius R2, and these different local pattern qualities work together to scatter reflected light effectively in the miniaturized camera module, addressing the increased reflection frequency caused by miniaturization.
Solution Approach 2:
The patent employs curved surface patterns with specific curvature radii (R1, R2) on the rib surface instead of flat or simple geometric patterns. These curved patterns are particularly effective in scattering reflected light in the compact camera module geometry, reducing the harmful effects of increased light reflection frequency that results from miniaturization.
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
The patterned rib surface and press-fit ring effectively scatter refracted light, reducing flare occurrences and improving image quality by minimizing light reflection on the image sensor.
Implementation Method 1
A camera module design featuring a rib surface with a pattern of curved surfaces on the lens and press-fit ring, including protrusion and groove portions with varying inclinations and distances from the optical axis, to induce diffuse reflection and alleviate flare by scattering reflected light.
Data Source
AI summary
A camera module is provided. The camera module includes at least one lens including a rib surface, a lens barrel configured to accommodate the at least one lens, and an image sensor disposed in an optical axis direction with respect to the at least one lens. The rib surface includes a first region in which a pattern including a curved surface is repeatedly formed on a surface that is perpendicular to the optical axis direction.