Lens Module Multi-Matching Structure Assembly Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lens structures face challenges with assembly stability and precision due to the combination of glass and plastic lenses, affecting the overall performance and image quality of lens modules.
Innovation Solution
A novel lens module design featuring a multi-matching structure between lenses and a lens barrel, with symmetrical shapes and specific matching surfaces, along with the use of plastic lenses and a light-shading sheet, to enhance assembly stability and imaging quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If glass lenses are used in the lens module, then imaging quality is improved, but assembly stability deteriorates due to outer diameter precision problems and difficulty in matching with lens barrels
Solution Approach 1:
The patent replaces expensive glass lenses with plastic lenses that have sufficient optical performance for the application. Plastic lenses are easier to manufacture with consistent precision and can be directly matched with the lens barrel without additional complex matching structures, thereby improving assembly stability while maintaining acceptable imaging quality.
Solution Approach 2:
The patent changes the material parameter from glass to plastic, which fundamentally alters the manufacturability and matching characteristics. Plastic lenses can be molded with precise outer diameters that directly match the lens barrel, eliminating the precision problems associated with glass lens processing and assembly.
2Manufacturing precision
If multiple lenses are combined in the lens module, then imaging performance is improved, but assembly stability deteriorates due to the complexity of matching multiple lenses together
Solution Approach 1:
The patent integrates multiple lens functions into a single plastic lens element where possible, reducing the total number of separate lenses that need to be matched and assembled. This merging approach simplifies the assembly process and improves stability by eliminating multiple matching interfaces.
Solution Approach 2:
The patent uses plastic lenses instead of glass lenses, which can be molded as integrated multi-element structures. This allows complex optical systems to be manufactured as single pieces or easily assembled components, avoiding the stability issues of matching multiple precision glass elements.
3Ease of manufacture
If traditional matching methods are used for lenses, then assembly is simpler, but assembly stability and precision are insufficient to meet lens accuracy requirements
Solution Approach 1:
The patent incorporates matching structures directly into the lens and lens barrel designs during the manufacturing stage. The outer diameter of plastic lenses is precisely controlled during molding to match the lens barrel, and positioning structures are pre-formed, eliminating the need for complex post-assembly matching operations while ensuring high assembly stability.
Solution Approach 2:
The patent changes the manufacturing method from precision machining and manual matching to precision molding with integrated matching features. This parameter change in the manufacturing process enables both simplicity and high stability by forming all matching surfaces in a single molding operation with controlled tolerances.
Data Source
AI summary
A lens module includes a lens barrel, and a lens group having a first and second lenses. An image side surface of a first barrel wall includes a first planar surface, a first oblique surface obliquely extending from the first planar surface, and a second planar surface extending from the first oblique surface. An object side surface of a peripheral portion of the first lens includes a second oblique surface attached to the first oblique surface and a fourth planar surface attached to the second planar surface. An image side surface of the peripheral portion of the first lens includes a fifth planar surface, a third oblique surface obliquely extending from the fifth planar surface, and a sixth planar surface extending from the third oblique surface towards the optical axis. An object side surface of the second lens includes a seventh planar surface and a fourth oblique surface.