Heat-Resistant Camera Module with Integrated Barrel Mounting
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Solution Overview
Problem
Common camera modules lack heat resistance and are bulkier due to the housing required for mounting on circuit boards using surface mounted technology, which increases their volume.
Innovation Solution
A camera module design featuring a heat-resistant lens made of polymethyl methacrylate (PMMA) and a barrel made of liquid crystal polyester (LCP) with a positioning post, allowing direct mounting on a circuit board while minimizing volume, using surface mounted technology (SMT) for all components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a housing is used for mounting the camera module on a circuit board by surface mounted technology, then the camera module can be mounted on the circuit board, but the housing increases the volume of the camera module
Solution Approach 1:
The patent removes the traditional housing component from the camera module assembly. The lens barrel is designed with a mounting portion that directly engages with the circuit board, eliminating the need for a separate housing structure while maintaining SMT mounting capability.
Solution Approach 2:
The patent combines the mounting function previously performed by the housing into the lens barrel itself. The lens barrel integrates both optical function and mounting function through its designed mounting portion, reducing the total component count and volume.
2Ease of manufacture
If common lenses are used for camera modules, then the camera module can be manufactured with standard components, but the lenses are not heat-resistant
Solution Approach 1:
The patent changes the material parameter of the lens from common plastic to heat-resistant plastic, specifically polymethyl methacrylate (PMMA), which can withstand the temperatures of SMT reflow soldering processes while maintaining optical properties.
Solution Approach 2:
The patent uses composite material construction where the lens is made of heat-resistant plastic (PMMA) and the lens barrel is made of liquid crystal polyester (LCP), combining materials with complementary properties to achieve both manufacturability and heat resistance.
Data Source
AI summary
A camera module includes a lens of heat-resistant material, a barrel receiving the lens, a baseboard mounted on the barrel by surface mounted technology, an image sensor mounted on the baseboard receiving optical signals from the lens and converting the optical signals into electrical signals, and a transmitting member transmitting the electrical signals to the circuit board.