Multi-Lens Frame Optical Module for CMOS Axis Calibration
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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 requiring multiple lenses for improved photographic capabilities.
Innovation Solution
An optical image capturing module with a circuit assembly, multi-lens frame, and lens assemblies, where the optical axis of fixed-focus and auto-focus lens assemblies overlap the central normal line of the sensing surface, allowing light to pass through and ensuring image quality, with specific conditions for lens parameters such as focal length, entrance pupil diameter, and arc length to optimize image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple lenses are used to improve photographic capabilities, then image quality and photographic requirements are met, but optical axis calibration difficulty and assembly complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-aligning the optical axes of multiple lens assemblies with the central normal line of the sensing surface during the module design and manufacturing stage. The lens assemblies are positioned in advance with predetermined optical paths that ensure accurate alignment with the CMOS active pixel sensor, eliminating the need for complex post-assembly calibration procedures.
Solution Approach 2:
The patent implements universality through a unified module design where the circuit substrate integrates both the sensing surface and multiple lens assemblies with fixed-focus and auto-focus functionalities. This multi-functional integration allows the same structural framework to support various lens configurations and focus mechanisms, simplifying the overall assembly process while maintaining precise optical alignment.
2Manufacturing precision
If more lenses are added to meet higher photographic requirements, then imaging capability is improved, but assembling and packaging quality becomes difficult to manage
Solution Approach 1:
The patent applies merging by integrating multiple lens assemblies (including fixed-focus and auto-focus lenses) directly onto a single circuit substrate with the sensing surface. This consolidation reduces the number of separate components and assembly steps, making it easier to manage assembling and packaging quality even when four or more lenses are included to meet high photographic requirements.
3Manufacturing precision
If optical axis alignment is not accurate, then image quality deteriorates, but calibration process becomes increasingly difficult
Solution Approach 1:
The patent applies preliminary action by pre-aligning the optical axes of multiple lens assemblies with the central normal line of the sensing surface during the module design and manufacturing stage. The lens assemblies are positioned in advance with predetermined optical paths that ensure accurate alignment with the CMOS active pixel sensor, eliminating the need for complex post-assembly calibration procedures.
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
The solution ensures high image quality by aligning optical axes with the sensing surface, improving the assembly and packaging of components, and enabling multiple lenses to function effectively while maintaining fine imaging quality.
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, be covered on the circuit substrate and the image sensor elements, and surround the image sensor elements and the signal transmission elements. 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.