Optical Image Capturing Module Multi-Lens Frame Alignment
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Solution Overview
Problem
Existing optical image capturing modules with multiple lenses face challenges in achieving accurate image quality due to misalignment of the optical axis with the CMOS active pixel sensor during assembly, particularly when trying to incorporate multiple lenses without compromising image quality.
Innovation Solution
The optical image capturing module incorporates a circuit assembly with image sensor elements and signal transmission elements, a multi-lens frame, and fixed-focus lens assemblies. The lens bases are made of opaque material with accommodating holes, and the fixed-focus lens assemblies are positioned to ensure the optical axis aligns with the image sensor, meeting specific conditions for focal length, entrance pupil diameter, and field of view to enhance image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple lenses are incorporated to meet higher photographic requirements, then the imaging capability and field of view are improved, but the alignment precision between optical axis and CMOS sensor deteriorates
Solution Approach 1:
The patent merges multiple lens assemblies with different focal lengths into a single integrated module, combining wide-angle and telephoto capabilities in one device. The multi-lens frame structure integrates multiple optical paths and image sensor elements into a unified assembly, achieving both versatility and precise alignment through consolidation.
Solution Approach 2:
The patent segments the optical system into multiple independent lens assemblies (wide-angle lens assembly and telephoto lens assembly), each with its own optical axis and image sensor elements. This segmentation allows each lens to be optimized for specific functions while maintaining overall alignment through the multi-lens frame structure.
2Adaptability or versatility
If at least four lenses are included to meet higher photographic requirements, then the imaging versatility is improved, but the image quality deteriorates due to alignment issues
Solution Approach 1:
The patent applies local quality by providing different optical characteristics to different regions of the module. Each lens assembly has optimized optical parameters (focal length, aperture, field of view) tailored to its specific function, with the wide-angle lens having different optical properties than the telephoto lens, thereby maintaining image quality while achieving versatility.
Solution Approach 2:
The patent replaces traditional mechanical adjustment methods with an integrated optical design where the multi-lens frame structure inherently ensures proper alignment. The optical paths are designed to converge at the image sensor elements through precise geometric configuration rather than mechanical adjustment, eliminating alignment issues.
3Adaptability or versatility
If multiple lens assemblies are integrated, then the functional capability is improved, but the structural complexity increases
Solution Approach 1:
The multi-lens frame structure serves multiple functions simultaneously: it provides mechanical support for multiple lens assemblies, ensures precise alignment of optical axes with image sensor elements, defines the optical paths, and facilitates compact integration. This multi-functionality reduces overall structural complexity despite having multiple lenses.
Solution Approach 2:
The patent employs a nested structure where lens assemblies are positioned within the multi-lens frame, with optical elements and image sensor elements arranged in concentric or nested configurations. This nesting allows compact integration of multiple functional components while maintaining a unified structural framework.
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
This configuration ensures accurate alignment and improved image quality by maintaining the optical axis alignment with the image sensor, allowing for effective light transmission and reducing aberrations, thereby enhancing the imaging capabilities of the module.
Implementation Method 1
Each of the fixed-focus lens assemblies 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 surround the image sensor elements and the signal transmission elements. The lens assembly may include a lens base and a fixed-focus lens assembly. The lens base may be fixed to a multi-lens frame. The fixed-focus lens assembly may have at least two lenses with refractive power.