Multi-lens Frame Optical Module for Axis Alignment
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Solution Overview
Problem
Video-recording devices 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, leading to issues with image quality and the need for a solution that ensures proper alignment and light passage through multiple lenses.
Innovation Solution
An optical image capturing module with a circuit assembly and lens assembly, featuring a multi-lens frame, conductive lines, and electric conductors, where the optical axis of each lens assembly overlaps the central normal line of the sensing surface, allowing light to pass through and be emitted to the image sensor, ensuring accurate image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple lenses are used to meet higher photographic requirements, then the photographic capability is improved, but the alignment accuracy between optical axis and sensor deteriorates
Solution Approach 1:
The patent divides the multi-lens system into separate lens assemblies (first lens assembly with fixed-focus lens, second lens assembly with auto-focus lens) that can be independently manufactured and aligned. Each lens assembly has its own optical axis that is independently calibrated to overlap with the central normal line of the sensing surface, reducing the cumulative alignment errors that would occur in a fully integrated multi-lens system.
Solution Approach 2:
The patent introduces a new dimensional reference - the central normal line of the sensing surface - as the alignment基准 for each lens assembly's optical axis. This vertical dimension reference (perpendicular to the sensor surface) provides a more accurate and consistent alignment standard than traditional planar alignment methods, ensuring that light from each lens assembly passes through the light channel and reaches the corresponding sensing surface accurately.
2Manufacturing precision
If more lenses are included in the device, then the imaging quality requirement is met, but the difficulty of assembling and manufacturing increases
Solution Approach 1:
The patent segments the complex multi-lens system into manageable lens assemblies that can be pre-assembled and tested independently before final integration. Each lens assembly (fixed-focus and auto-focus) is a self-contained unit with its own optical path, making the overall assembly process more systematic and less error-prone.
Solution Approach 2:
The patent implements preliminary alignment and calibration of each lens assembly's optical axis to ensure it overlaps with the central normal line of the sensing surface before final assembly. This preliminary action ensures that when multiple lenses are integrated, the alignment is already established, reducing the need for complex post-assembly adjustments and calibrations.
3Ease of manufacture
If optical axis alignment is not accurate during assembly, then the manufacturing process is simpler, but the image quality deteriorates
Solution Approach 1:
The patent designs the lens assemblies with self-aligning features where the optical axis is inherently oriented to overlap with the central normal line of the sensing surface. The lens assembly structure itself provides alignment references (such as the central normal line definition) that guide proper positioning during assembly, reducing the need for complex external alignment tools and procedures while ensuring accurate image quality.
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, allowing light to pass through the fixed-focus and auto-focus lens assemblies, effectively addressing the misalignment issues in multi-lens video-recording devices.
Implementation Method 1
Each of the at least one fixed-focus lens assembly has at least two lenses with refractive power... light is able to pass through the fixed-focus lens assembly in each of the accommodating holes, pass through each of the light channels, and be emitted to the sensing surface
Data Source
AI summary
An optical imaging module utilizes conductive lines and electric conductors to reduce the overall thickness of an image sensor element. With the configuration of a fixed lens assembly and an auto lens assembly, and a multi-lens frame, incident light passes through the fixed lens assembly and is accurately focused on the image sensor element. In the same way, incident light passes through the auto lens assembly and is accurately focused on the image sensor element. The image sensor element is thus fully imaged and can be used to form images by alternating the fixed lens assembly and the auto lens assembly according to image requirements.