Array Lens Module Coaxiality via Merged Glass Lenses
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Solution Overview
Problem
Existing 3D lens modules for mobile devices face challenges in maintaining high coaxiality and stability due to separate assembly of lens barrels, leading to inaccuracies in image quality and depth-of-field representation.
Innovation Solution
An array lens module design featuring a housing with isolated apertures and stacked glass lenses, where each lens has multiple optical surfaces with aligned optical centers, and an image sensor that captures images from corresponding areas to achieve high coaxiality and stability, with antireflection and infrared cut coatings for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If two lens modules are separately assembled with respective lens barrels, then assembly flexibility is improved, but assembling accuracy and coaxiality deteriorate due to tolerance accumulation
Solution Approach 1:
The patent merges two separate lens modules into a single integrated lens module. The first and second lens barrels are combined into one unified structure, and the first and second lens sets are integrated within the same housing. This integration eliminates the need for separate assembly operations and removes the accumulation of tolerances between independent components, thereby achieving high coaxiality and assembling accuracy while maintaining manufacturing efficiency.
2Adaptability or versatility
If lens barrels are separately designed for each lens module, then design adaptability is improved, but coaxiality between optical axes deteriorates due to tolerance influences
Solution Approach 1:
The patent combines multiple lens barrel functions into a single integrated lens barrel structure. The housing contains both the first and second lens sets, and a single aperture serves both optical paths. This unified design ensures that the optical axes of the first and second lenses remain coaxial, eliminating the reliability issues caused by separate lens barrel designs while still allowing for design flexibility in the overall module configuration.
3Adaptability or versatility
If multiple lens sets are used to achieve 3D imaging, then imaging functionality is improved, but assembly complexity increases leading to reduced assembling accuracy
Solution Approach 1:
The patent integrates multiple lens sets within a single housing structure. The first lens set and second lens set are both contained within the same lens barrel, sharing common mechanical support and alignment features. This integration reduces the number of separate assembly operations required, simplifies the overall assembly process, and maintains high assembling accuracy by eliminating the need to separately align multiple independent lens modules.
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-resolution 3D imaging with improved coaxiality and stability, allowing for precise depth-of-field calculation and reduced assembly requirements, resulting in enhanced image quality and cost-effective production.
Implementation Method 1
Lens set comprises at least two pieces optical lenses... Straight lines passing by geometric center of the loophole and the optical axis of these optical lenses should coincide
Implementation Method 2
with antireflection and infrared cut coatings for improved performance
Implementation Method 3
with antireflection and infrared cut coatings for improved performance
Data Source
AI summary
An array lens module includes a housing, an image sensor with photosensitive area and a lens module installed inside the housing. The lens module is formed by at least two pieces glass lens. The first lens with the first imaging area and the second lens with the second imaging area are molded on the lens module. The image processor is respectively capturing the first image area and the second image area by a certain length-width ratio in the first imaging area and the second imaging area. A parallax between image in the first image area and image in the second image area is accordingly generated. The lens module is all-glass structure with a high transmittance and excellent achromatization performances.