Matte Bracket Surface and Viscous Colloid for Anti-Ghosting Camera Modules
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Solution Overview
Problem
Camera modules suffer from image degradation due to light reflection from the lens bracket, leading to ghosting and flare in captured images.
Innovation Solution
A camera device design featuring a printed circuit board with an image sensor, a supporting bracket with a matte surface to reduce light reflection, and a viscous colloid to prevent light leakage between the lens module and the bracket, along with a protecting sheet to filter out unwanted light and protect the sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lens bracket is used to support the lens module, then the lens module is securely positioned, but light reflection from the lens bracket causes ghosting and flare in captured images
Solution Approach 1:
The patent applies a matte anti-reflective coating specifically on the light-shielding portion of the lens bracket that contacts the lens module. This local treatment reduces light reflection and ghosting at the critical interface between the lens bracket and lens module, while maintaining the structural support function of the entire bracket assembly.
Solution Approach 2:
The patent introduces a light-shielding layer as an intermediary substance between the lens bracket and the lens module. This layer serves dual purposes: it maintains the mechanical positioning function of the bracket while simultaneously blocking and absorbing stray light to prevent reflection-induced ghosting and flare.
2Strength
If a viscous colloid is used to fix the lens module to the supporting bracket, then the lens module is securely attached, but light can leak through the gap between the lens module and bracket
Solution Approach 1:
The patent uses a composite bonding solution consisting of black viscous colloid mixed with transparent bonding agent. The black colloid provides light-absorbing properties to prevent light leakage, while the transparent bonding agent ensures strong adhesive attachment between the lens module and supporting bracket, creating a composite material that achieves both mechanical strength and optical blocking.
3Ease of manufacture
If a smooth surface is used on the supporting bracket, then assembly is easier, but light reflection is increased causing image degradation
Solution Approach 1:
The patent applies the matte anti-reflective treatment only to specific light-shielding surfaces of the supporting bracket that are prone to causing ghosting, rather than treating the entire bracket. This localized approach reduces light reflection where critical while maintaining easier assembly characteristics in non-critical areas.
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
Significantly reduces light reflection and ghosting, enhancing image quality by diffusing incident light and preventing light leaks, while also securing the protecting sheet and reducing assembly costs.
Implementation Method 1
the top bearing surface with a matte surface... significantly reduces light reflection and ghosting, enhancing image quality by diffusing incident light
Implementation Method 2
The lens module fixed on the supporting bracket by a viscous colloid, the viscous colloid being solidified to form a barricade, the barricade preventing light from leaking
Data Source
AI summary
A camera device with anti-ghosting and anti-flare properties includes a printed circuit board; an image sensor mounted on the printed circuit board; and a supporting bracket fixed on the printed circuit board. The supporting bracket includes a supporting plate and perpendicular side wall. The supporting plate and the side wall together form a receiving room covering the image sensor, the supporting plate is opened to form a step portion. The step portion comprises a matte top bearing surface, and a protecting sheet fixed on the matte top bearing surface.