Camera Module Dust Collection Base with Sticking Layer
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Solution Overview
Problem
Camera modules in small-sized electronic devices face issues with dust generation due to shock, which can lead to dust falling onto the imaging area and causing blurred images.
Innovation Solution
A camera module design featuring a concaved dust collecting portion with a dust sticking layer on the base surface and a dust falling preventing wall around the opening, preventing dust from entering the imaging area and ensuring it sticks to the layer, thus maintaining image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera module uses a conventional base structure with an opening for light passage, then the imaging function is achieved, but dust generated from shock can fall into the opening and reach the imaging area causing blurred images
Solution Approach 1:
The base structure is segmented into functional zones: a dust collection area with a dust sticking layer and a light passage area with an opening. The dust falling preventing wall separates these zones, directing dust particles away from the opening while allowing light to pass through unobstructed.
Solution Approach 2:
A dust falling preventing wall is introduced as an intermediary structure between the dust collection area and the opening. This wall acts as a barrier that intercepts dust particles in motion, preventing them from reaching the imaging area while not interfering with light passage.
2Ease of manufacture
If the base surface is made flat and simple, then the manufacturing is easy, but dust particles can easily accumulate and fall into the opening
Solution Approach 1:
The dust sticking layer is applied to the base surface in advance, creating a surface that actively attracts and holds dust particles before they can reach the opening. This preliminary treatment ensures dust capture capability is built into the base structure itself.
Solution Approach 2:
The base surface is transformed from a flat two-dimensional surface to a three-dimensional structure with a concaved dust collection area and a dust falling preventing wall. This dimensional change creates functional zones that guide dust particles away from the opening while maintaining manufacturing feasibility.
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 prevents dust from reaching the imaging area, ensuring clear images even when the device is dropped, by using a dust sticking layer and wall to collect and stick dust falling onto the base surface.
Implementation Method 1
a surface of the concaved dust collecting portion includes a dust sticking layer to which fallen dust is adapted to stick
Implementation Method 2
achieved by an interaction between a magnetic field generated by an electrical current flowing in a coil and a magnetic field generated by a yoke and magnets provided on the yoke
Data Source
AI summary
A camera module that can obtain a clear image even in the case where dust is generated inside the camera module due to a shock applied thereto is provided. The camera module includes a base and a cover attached to the base so as to define a space therebetween in which the holder can be displaced. The base has an upper surface which faces the cover, and the upper surface of the base includes a concaved dust collecting portion and a dust falling preventing wall formed on the upper surface so as to surround an entire circumference of an opening of the base, and wherein a surface of the concaved dust collecting portion includes a dust sticking layer to which fallen dust is adapted to stick, whereby when dust is generated in the space between the cover and the base and such dust is fallen onto the upper surface of the base, it is possible to prevent such dust from entering into the opening by the dust falling preventing wall and such dust is stuck to the dust sticking layer of the dust collecting portion provided on the upper surface of the base.