Optical Lens Fastener Assembly for Low-Tilt Camera Modules
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Solution Overview
Problem
The existing connection methods for optical lenses in camera modules, such as thread and fastener connections, result in increased module volume, particulate pollution, and manufacturing errors leading to lens deviation from the optical axis, affecting imaging quality and assembly yield.
Innovation Solution
A novel fastener connection method involving inclined fasteners and double-layer fastener structures, along with thread portions, to ensure precise alignment and minimize lens displacement during assembly, reducing eccentricity and tilt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lens is disposed inside a housing in a prior art camera module, then the lens is protected from external contaminants, but the lens cannot be effectively cleaned when contaminated
Solution Approach 1:
The housing is divided into a first housing and a second housing that can be separated from each other. The lens is disposed between these two housings, allowing the second housing to be removed for lens cleaning while the first housing remains in place. This segmentation enables both protection during operation and accessibility during maintenance.
Solution Approach 2:
The housing structure transitions from a fixed, sealed configuration to a dynamic, separable configuration. The first and second housings are designed to be detachably connected, allowing the system to switch between a protected state (when assembled) and an accessible state (when disassembled for cleaning).
2Ease of manufacture
If the lens surface is exposed for easy cleaning, then cleaning accessibility is improved, but the lens becomes vulnerable to external contaminants and damage
Solution Approach 1:
The housing is segmented into removable and fixed portions. The second housing can be removed to expose the lens for cleaning, while the first housing remains to provide structural support and protection when assembled. This allows the lens to be protected when needed and accessible when needed.
Solution Approach 2:
The second housing acts as an intermediary component that can be selectively removed. When present, it protects the lens; when removed, it allows cleaning access. This intermediary structure mediates between the conflicting requirements of protection and accessibility.
Data Source
Figure 1
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AI summary
Provided is an optical lens, including: a lens component (2001) including at least one first lens and a lens barrel portion (2005) holding the at least one first lens therein, wherein an outer part of the lens barrel portion (2005) having a first fastener (2002) arranged in a circumferential direction; a lens driving component including a drive portion and a drive portion carrier, wherein the drive portion driving the lens component (2001), and an inner part of the drive portion carrier having a second fastener arranged in a circumferential direction, and the first fastener (2002) and the second fastener being engaged to couple the lens component (2001) and the lens driving component, and one of the first fastener (2002) and the second fastener has an inclined portion (2003) that is inclinedly configured in the circumferential direction. There also provides a corresponding manufacturing method for the optical lens and a camera module. The assembly tolerance, optical lens tilt and optical lens volume can be reduced, and the imaging quality of the optical lens or the camera module can be improved.