Camera Module Sub-Housing Gas Discharge Channels
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Solution Overview
Problem
The existing camera module designs face challenges with gas discharge during the curing of adhesives like epoxy resin, which can lead to foreign substance entry or flare phenomena due to inadequate gas discharge mechanisms.
Innovation Solution
The camera module incorporates a sub-housing with a frame portion that includes a gas discharge portion with a first channel communicating the inner and outer surfaces in one direction and a second channel extending along the optical axis direction in a different direction, along with a filler material to seal the gas discharge portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a space for gas discharge is provided with a space engraved on the seating portion of the sub-housing, then gas generated during adhesive curing can be discharged, but foreign substances may enter or flare phenomenon may occur
Solution Approach 1:
The gas discharge function is segmented into multiple independent channels (first channel and second channel) with different orientations. The first channel extends in a direction perpendicular to the optical axis, while the second channel extends along the optical axis direction, allowing gas to be discharged through multiple pathways simultaneously, reducing the risk of foreign substance entry and flare phenomena while maintaining effective gas discharge capability
Solution Approach 2:
The gas discharge mechanism transitions from a single-plane engraving to a three-dimensional multi-channel structure. By adding the second channel that extends along the optical axis direction (different dimension from the first channel), the system creates volumetric gas discharge pathways that reduce pressure buildup and minimize the formation of flare phenomena while maintaining foreign substance barrier integrity
2Object-generated harmful factors
If the sub-housing is configured to space apart the seating portion from the substrate, then gas discharge is facilitated, but structural stability may be compromised
Solution Approach 1:
The support portion is designed with localized reinforcement features including a reinforcement rib extending from the support portion and a reinforcement hole positioned at the intersection of the reinforcement rib and the substrate. This local quality enhancement provides targeted structural support at critical stress points, maintaining structural stability while preserving the overall spaced configuration necessary for effective gas discharge
Data Source
AI summary
A camera module includes a lens barrel; an image sensor, mounted on a substrate, disposed below the lens barrel along an optical axis direction of the lens barrel; and a sub-housing, disposed between the lens barrel and the substrate, comprising a seating portion on which an infrared filter is accommodated, and a frame portion supported by the substrate. The sub-housing is configured to space apart the seating portion from the substrate. The sub-housing comprises an inner surface facing the image sensor and an outer surface facing away from the inner surface. The frame portion includes a gas discharge portion including a first channel communicating the inner surface with the outer surface in a first direction and a second channel extending from the first channel to the outer surface along the optical axis direction in a second direction different from the first direction.