Compact Camera Module Without Lens Barrel
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Solution Overview
Problem
Current camera modules are hindered by their large size due to the need for a fixed lens barrel, which occupies excess space and prevents them from meeting the requirements of thinner and lighter electronic devices, while also limiting the expansion of screen ratios in devices like smartphones.
Innovation Solution
A camera module design where the optical lens is directly assembled on a molded base without a fixed lens barrel, allowing for a more compact structure and reduced size, with the molded base integrally molded on the circuit board and photosensitive element, eliminating the need for safe spaces and enhancing space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed lens barrel is used to hold the optical lens, then the optical lens can be securely positioned, but the overall size of the camera module increases
Solution Approach 1:
The patent removes the fixed lens barrel from the camera module structure. Instead of using a separate lens holder component, the optical lens is directly mounted on the circuit board, eliminating the unnecessary structural element that was occupying excess space while still achieving secure positioning of the lens
Solution Approach 2:
The patent merges the functions of the lens holder and the circuit board mounting structure. The circuit board itself serves as the mounting platform for the optical lens, combining multiple functions into a single integrated structure, thereby reducing the overall number of components and the module's volume
2Reliability
If safe spaces are reserved between the lens holder, electronic components, and photosensitive chip, then component reliability is improved, but the camera module size increases
Solution Approach 1:
The patent applies partial safety margins selectively rather than uniformly across all components. By directly mounting the optical lens on the circuit board and using precise positioning structures, the design achieves necessary reliability while minimizing the safety space requirements, allowing electronic components to be arranged more densely on the circuit board
3Volume of moving object
If the camera module size is reduced to increase screen ratio, then device compactness is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent incorporates preliminary positioning structures directly into the circuit board design, such as precise mounting holes and alignment features, that are prepared in advance during PCB fabrication. This preliminary action ensures that when components are assembled, the required precision is already built into the structure, reducing the difficulty of achieving high precision in the final compact assembly
Data Source
AI summary
A camera module and an electronic device having the same, and a method for manufacturing the camera module, wherein the fixed-focus camera module comprises a circuit board; a photosensitive element, which is conductively connected to the circuit board; a molded base, wherein the molded base is integrally molded on the circuit board and the photosensitive element, and the molded base forms a light window, so as to provide a light passage for the photosensitive chip through the light window; and an optical lens, wherein the optical lens is supported on the molded base and corresponds to the light window formed by the molded base, wherein the circuit board comprises a circuit board substrate and at least one electronic component, wherein the at least one electronic component is electrically connected to the circuit board substrate, wherein the circuit board substrate has a blank side, and wherein the blank side of the circuit board substrate is free of the at least one electronic component.