Imaging Lens Carrier Structure for Stray Light Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in the industry is to develop an imaging lens assembly driving module that reduces the possibility of stray light generation while maintaining better image quality, particularly in portable electronic devices.
Innovation Solution
The module incorporates a lens carrier, first and second molded structures with light blocking structures, and a driving mechanism to form light passing holes with specific geometric configurations, ensuring that the cross section includes valley and crest points within defined ratios, allowing for effective light blocking and improved imaging quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional lens assembly structure is used, then the device complexity is low, but stray light enters the imaging system degrading image quality
Solution Approach 1:
The light blocking structure is divided into multiple segments including a first light blocking structure and a second light blocking structure positioned at different locations. Each segment blocks stray light from different angles or regions, providing comprehensive stray light protection while keeping each individual segment relatively simple in design
Solution Approach 2:
The light blocking structures are designed with specific three-dimensional geometric features including valley points and crest points with defined dimensional relationships (d1/D and d2/D ratios). This multi-dimensional geometric design effectively blocks stray light paths while maintaining a compact overall structure that integrates well within the lens assembly
2Object-affected harmful factors
If light blocking structures are added to reduce stray light, then imaging quality improves, but the manufactured precision requirements increase
Solution Approach 1:
The first and second molded structures are combined into an integrated assembly where the light blocking structures are formed as integral parts of the molded components. This merging approach ensures consistent positioning and geometric relationships between the light blocking features, reducing the need for high-precision assembly while maintaining effective stray light blocking
Solution Approach 2:
The design specifies particular parameter relationships (d1/D and d2/D ratios) for the light blocking structure geometry. By optimizing these dimensional parameters during the design phase, the structure achieves effective stray light blocking with relaxed manufacturing tolerances, as the geometric relationships are built into the molded structures themselves rather than requiring precision assembly
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 effectively blocks non-imaging light, reduces stray light generation, and maintains coaxiality, thereby enhancing the imaging quality and stability of the lens assembly.
Implementation Method 1
the first molded structure is coupled to the second molded structure so that the first light blocking structure and the second light blocking structure are disposed correspondingly to each other for forming a light passing hole
Data Source
AI summary
An imaging lens assembly driving module includes a lens carrier, a first molded structure, a second molded structure, a driving mechanism and a mechanical member. The lens carrier defines an optical axis. The first molded structure is disposed correspondingly to the lens carrier and includes a first light blocking structure. The second molded structure is coupled to the first molded structure for forming an inner space, the lens carrier is accommodated in the inner space, and the second molded structure includes a second light blocking structure. The driving mechanism is for driving the lens carrier to move along the optical axis. The mechanical member is for connecting the lens carrier and the first molded structure. The first molded structure is coupled to the second molded structure so that the first light blocking structure and the second light blocking structure form a light passing hole.