Imaging Lens Module With Dual Rollable Supports for Precise Assembly
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Solution Overview
Problem
Conventional optical systems in electronic devices face challenges in achieving high image quality and compactness due to complex structures and assembly issues such as warpage and increased size, which affect the manufacturing yield and functionality.
Innovation Solution
The imaging lens driving module incorporates a lens system with a lens holder assembly, a base, and a rollable support assembly, featuring principal and auxiliary rollable support elements with different diameters, allowing parallel movement and assembly foolproof mechanisms to address assembly errors and improve recognition efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional optical systems use complex structures to achieve high image quality, then image quality is improved, but device size and structural complexity increase
Solution Approach 1:
The optical system is divided into multiple lens holders (first lens holder, second lens holder, etc.) that can be independently assembled and adjusted. Each lens holder contains specific lens elements and can be positioned separately, allowing complex optical functionality to be achieved through modular assembly rather than a single complex structure
Solution Approach 2:
Multiple lens holders are nested within the same optical path structure, with each lens holder containing lens elements that work together in sequence. The first lens holder, second lens holder, and additional lens holders are arranged concentrically or in series, allowing compact integration of multiple optical components without increasing overall device size
2Adaptability or versatility
If conventional camera modules add functionalities such as auto focus and optical image stabilization, then functionality is improved, but module size increases
Solution Approach 1:
The lens holder assembly structure serves multiple functions simultaneously: it provides mechanical support for lens elements, enables auto-focus through axial movement, allows optical image stabilization through lateral adjustment, and facilitates assembly alignment. The same structural components perform multiple roles, eliminating the need for separate mechanisms for each function
Solution Approach 2:
Multiple optical functions (auto-focus, optical image stabilization, zoom) are merged into a single integrated lens holder assembly that moves as one unit or in coordinated fashion. The first lens holder, second lens holder, and additional lens holders work together in a unified structure, combining multiple functionalities without requiring separate modules
3Ease of manufacture
If conventional optical systems use standard assembly processes, then manufacturing is simplified, but assembly errors and warpage increase defective rate
Solution Approach 1:
The lens holders are pre-assembled with precision positioning features and guiding grooves before final assembly. The guiding grooves are预先 formed with specific orientations and dimensions to ensure correct positioning, and lens elements are pre-aligned within each lens holder, reducing assembly errors during final integration
Solution Approach 2:
Guiding grooves and guiding structures act as intermediaries between lens holders and the optical system framework. These guiding features mediate the assembly process by providing mechanical constraints that automatically align components, reducing the skill level required for assembly while ensuring high positioning accuracy
Data Source
AI summary
An imaging lens driving module includes a lens system, a lens holder accommodating optical lens elements of the lens system, a base, a rollable support assembly and a driving mechanism. The base includes first and second guiding grooves extending in a direction parallel to the optical axis, disposed opposite to each other and facing the lens holder. The rollable support assembly is in physical contact with and disposed between the lens holder and the base and includes principal and auxiliary rollable support elements. The principal rollable support element is disposed between the lens holder and the first guiding groove. The auxiliary rollable support element is disposed between the lens holder and the second guiding groove. The driving mechanism is configured to drive the lens holder to move. Diameters of the principal and auxiliary rollable support elements in physical contact with the lens holder are different from each other.