Camera Module Filter Attachment via Segmented Molded Base
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Solution Overview
Problem
The existing camera module design faces challenges due to transition arc surfaces in the molded base, which reduce the attachment area and connection strength between the filter and the molded base, affecting the reliability and assembly quality of the camera module.
Innovation Solution
The design includes a molded base with a second molded portion that provides a flat attachment surface for the filter, allowing it to be attached without avoiding the transition arc surface, and features a notch for air escape and reinforcement to enhance attachment strength and prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the filter is attached to the groove of the molded base, then the distance between the filter and photosensitive chip is reduced, but the transition arc surface reduces the attachment area and connection strength
Solution Approach 1:
The molded base is divided into a first molded portion and a second molded portion, where the second molded portion provides a flat attachment surface for the filter that is elevated above the transition arc surface, allowing the filter to be attached without avoiding the arc surface while maintaining large attachment area
Solution Approach 2:
The second molded portion elevates the attachment surface to a higher dimension (above the transition arc surface level), creating a flat surface that extends in the horizontal direction without being constrained by the arc surface geometry below
2Manufacturing precision
If the filter avoids the transition arc surface, then attachment flatness is ensured, but the attachment area becomes smaller
Solution Approach 1:
The molded base is segmented into two portions: the first molded portion contains the groove with transition arc surface, while the second molded portion provides a separate flat attachment surface elevated above the arc surface, allowing both flatness and large area
Solution Approach 2:
The second molded portion acts as an intermediary structure that bridges the gap between the groove structure and the filter attachment requirement, providing a flat surface that is not constrained by the arc surface geometry
Data Source
AI summary
Provided are a camera module, a molded photosensitive assembly and a manufacturing method thereof, and an electronic device. The molded photosensitive assembly is assembled with at least one optical lenses to form a camera module. The molded photosensitive assembly includes an imaging assembly, a molded base, and a filter member. The molded base includes a first molded portion and a second molded portion. The first molded portion embeds a part of the imaging assembly. The second molded portion is integrally formed on a first upper surface of the first molded portion, and the second molded portion has a second upper surface and a second outer side surface. A filter member is attached to the second upper surface of the second molded portion, and corresponds to a photosensitive path of the imaging assembly. The second upper surface of the second molded portion is higher than the first upper surface of the first molded portion, so as to define and form an outer space by a second outer side surface of the second molded portion and the first upper surface of the first molded portion.