Camera Module Light-Blocking Wire Layout for Stray Light Control
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Solution Overview
Problem
Conventional optical systems struggle to prevent stray light reflection, which affects image quality in high-end electronic devices, making it difficult to meet progressive market requirements.
Innovation Solution
A camera module design incorporating a fixed base, carrier, elastic element, imaging lens, coil, magnetic element, connection wire, and light-blocking coating, where the light-blocking coating is applied to the connection wire and bobbin to prevent stray light reflection, ensuring the connection wire is securely fixed and maintaining structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional lens configuration is used, then device complexity is reduced, but stray light reflection increases affecting image quality
Solution Approach 1:
The patent extracts the light-blocking function from the lens configuration and relocates it to the connection wire and bobbin structures. By applying light-blocking coating to these components, the harmful reflection is addressed without modifying the lens design, thus maintaining optical simplicity while eliminating stray light.
Solution Approach 2:
The patent introduces a light-blocking coating as an intermediary substance between the connection wire/bobbin and the optical path. This coating acts as a mediator that prevents light reflection from these structural components without requiring changes to the lens system or optical elements.
2Object-affected harmful factors
If light-blocking coating is applied to connection wire, then stray light reflection is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent applies light-blocking coating selectively only to specific portions of the connection wire and bobbin that face the optical axis or are positioned to potentially reflect light into the lens. This localized application approach reduces the amount of coating material needed and simplifies the manufacturing process compared to coating entire components.
Solution Approach 2:
The patent implements partial light-blocking by coating only the critical surfaces of the connection wire and bobbin rather than the entire components. This partial action is sufficient to eliminate harmful reflections while reducing manufacturing complexity and material consumption.
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 design effectively reduces stray light reflection, enhancing image quality and maintaining structural integrity, suitable for wide-angle imaging applications with improved optical performance.
Implementation Method 1
The elastic element is connected to the fixed base and the carrier so as to provide freedom of movement of the carrier along a direction with respect to the fixed base
Implementation Method 2
The magnetic element is disposed corresponding to the coil so as to provide a driving force for moving the carrier along the direction
Implementation Method 3
The light-blocking coating is disposed on the at least part of the connection wire facing towards the optical axis
Data Source
AI summary
A camera module includes a fixed base, a carrier, an elastic element, an imaging lens, a coil, a magnetic element, a connection wire and a light-blocking coating. The carrier is disposed opposite to the fixed base and has a bobbin. The elastic element is connected to the fixed base and the carrier so as to provide freedom of movement of the carrier with respect to the fixed base. The imaging lens is disposed on the carrier and has an optical axis. The coil is disposed on the carrier. The magnetic element is disposed corresponding to the coil so as to provide a driving force for moving the carrier. The connection wire is disposed on the bobbin and electrically connected to the elastic element and the coil, and the connection wire has at least part facing towards the optical axis where the light-blocking coating is disposed.