Multi-lens Frame Optical Module with Embedded Signal Traces
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Solution Overview
Problem
Current video-recording devices with multiple lenses face challenges in achieving accurate image quality due to difficulties in calibrating the optical axis with CMOS active pixel sensors during assembly, and managing the complex composition of components, especially when incorporating auto-focus functionality and multiple lenses.
Innovation Solution
An optical image capturing module with a multi-lens frame that embeds signal transmission elements, ensuring accurate alignment of fixed-focus and auto-focus lens assemblies with the image sensor's central normal line, and using a driving assembly to adjust the auto-focus lens assembly, while minimizing module size and preventing component deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple lenses are used to meet higher photographic requirements, then imaging capability is improved, but calibration accuracy of optical axis deteriorates
Solution Approach 1:
The patent merges multiple lens assemblies (fixed-focus and auto-focus) into a single integrated module with a common mounting structure. The lens holders are precisely positioned relative to the CMOS sensor, ensuring that optical axes of multiple lenses are accurately calibrated simultaneously rather than requiring separate calibration procedures for each lens.
Solution Approach 2:
The patent introduces a multi-lens frame structure as an intermediary component that precisely positions multiple lens assemblies relative to the CMOS sensor. This frame serves as a reference framework that ensures accurate optical axis alignment for all lenses during assembly, eliminating the need for complex post-assembly calibration.
2Adaptability or versatility
If auto-focus function is added to enhance functionality, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent combines fixed-focus and auto-focus lens assemblies into a single integrated module. The auto-focus driving assembly is integrated within the same structure that houses the fixed-focus lenses, sharing common mounting features and alignment references. This merging reduces the need for separate mounting structures and simplifies the overall assembly process despite the added functionality.
Solution Approach 2:
The patent designs the lens holder structure to serve multiple functions: it positions fixed-focus lenses, positions auto-focus lenses, and provides reference features for both types of assemblies. The multi-lens frame universally supports both fixed and variable focus functionality within a single structure, reducing the number of separate components needed.
3Ease of manufacture
If signal transmission elements are not embedded in the frame, then manufacturing ease is improved, but reliability deteriorates due to deformation and short-circuiting
Solution Approach 1:
The patent performs preliminary embedding of signal transmission elements into the lens frame structure during the frame manufacturing process itself. This preliminary action ensures that the conductive elements are securely positioned and protected before the lens assemblies are mounted, preventing deformation and short-circuiting that would occur if the elements were added or routed after assembly.
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
Ensures high image quality by accurately aligning lenses with the image sensor, preventing signal transmission issues, and maintaining a compact module size, while supporting auto-focus functionality and multiple lenses.
Implementation Method 1
The fixed-focus lens assembly and the auto-focus lens assembly may have at least two lenses with refractive power
Data Source
AI summary
An optical image capturing module is provided, including a circuit assembly and a lens assembly. The circuit assembly may include a circuit substrate, a plurality of image sensor elements, a plurality of signal transmission elements, and a multi-lens frame. The image sensor elements may be connected to the circuit substrate. The signal transmission elements may be electrically connected between the circuit substrate and the image sensor elements. The multi-lens frame may be manufactured integrally and covered on the circuit substrate and the image sensor elements. The signal transmission elements may be embedded in the multi-lens frame. The lens assembly may include a lens base, a fixed-focus lens assembly, an auto-focus lens assembly, and a driving assembly. The lens base may be fixed to a multi-lens frame. The fixed-focus lens assembly and the auto-focus lens assembly may have at least two lenses with refractive power.