Optical Image Capturing Module Multi-Lens Frame Alignment
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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 a CMOS active pixel sensor during assembly, and managing the complex composition of components, especially when requiring multiple lenses for enhanced photographic capabilities.
Innovation Solution
An optical image capturing module is designed with a circuit assembly, lens assembly, and multi-lens frame, where the optical axis of auto-focus lens assemblies overlaps the central normal line of the sensing surface, allowing light to pass through and ensuring image quality, with specific conditions for focal length, entrance pupil diameter, and lens positioning to optimize image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple lenses are used to enhance photographic capabilities, then imaging quality and functionality are improved, but optical axis calibration difficulty and assembly complexity increase
Solution Approach 1:
The patent merges multiple lens assemblies into a single integrated module with a common optical baseline. The multi-lens structure integrates multiple imaging units (including color cameras and depth sensors) into one unified assembly, eliminating the need for separate calibrations and reducing overall system complexity despite the increased number of optical elements.
Solution Approach 2:
The patent segments the complex optical system into modular lens assemblies, each with its own optical axis that converges at a common baseline. This segmentation allows each lens assembly to be independently optimized while maintaining overall system coherence through the shared baseline architecture.
2Reliability
If multiple lenses are used to enhance photographic capabilities, then imaging quality is improved, but optical axis calibration precision becomes more difficult
Solution Approach 1:
The patent establishes the optical baseline and lens assembly positions during the manufacturing process rather than during field calibration. The mechanical structure pre-positions each lens assembly's optical axis to converge at the predetermined baseline, performing the calibration action in advance during production when precision fixtures are available.
Solution Approach 2:
The multi-lens structure is designed with self-aligning features where the mechanical mounting structure automatically ensures optical axis convergence at the baseline. The rigid connection between lens assemblies and the common baseline creates a self-calibrating system that maintains precision without requiring external calibration equipment.
3Adaptability or versatility
If at least four lenses are used to meet photographic requirements, then imaging functionality is enhanced, but manufacturing and assembly difficulty increases
Solution Approach 1:
The patent implements a universal mounting structure that accommodates multiple lens types (color cameras, depth sensors, telephoto, wide-angle) within a single multi-lens assembly. The common baseline architecture serves multiple photographic functions simultaneously, allowing the same mechanical structure to support diverse optical configurations without requiring separate assembly procedures for each lens type.
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 accurately aligning the optical axis with the sensing surface, improving the assembly and packaging of components, and enabling the use of multiple lenses while maintaining fine imaging quality.
Implementation Method 1
Each of the auto-focus lens assemblies may have at least two lenses with refractive power... An optical axis of each of the auto-focus lens assemblies may overlap the central normal line of the sensing surface in such a way that light is able to pass through each of the auto-focus lens assemblies
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, an auto-focus lens assembly, and a driving assembly. The lens base may be fixed to a multi-lens frame. The auto-focus lens assembly may have at least two lenses with refractive power.