Lens Holder Fixing Assembly for Reduced-Thickness Modules
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Solution Overview
Problem
Electronic devices, such as digital cameras and video cameras, face challenges in miniaturization due to the large size of their lens modules, which hinder their ability to be thinner and lighter.
Innovation Solution
A fixing assembly comprising a lens holder, lens, and aperture that are assembled through snap-fit connections, allowing the lens to be accommodated in a groove of the lens holder, reducing the overall thickness and enabling easy assembly without additional fixing means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If traditional lens modules are used in electronic devices, then the lens can be securely fixed, but the device size increases and cannot be made thinner
Solution Approach 1:
The aperture is nested within the lens holder structure, with the aperture plate positioned inside the lens holder and secured by the pressing portion. This nesting arrangement integrates multiple components into a compact configuration, reducing the overall thickness of the lens module while maintaining secure fixation of all elements.
Solution Approach 2:
The pressing portion extends from the lens holder in a direction perpendicular to the optical axis, utilizing the thickness dimension to achieve secure fixation. This dimensional approach allows the aperture to be firmly pressed against the lens holder without increasing the radial size, thereby reducing the overall lens module thickness while maintaining fixing reliability.
2Reliability
If additional fixing means are used to secure the lens, then the fixing reliability improves, but the device complexity and assembly difficulty increase
Solution Approach 1:
The pressing portion is integrated directly into the lens holder structure, combining the functions of structural support and fixation into a single component. This merging eliminates the need for separate fixing mechanisms such as additional screws or clips, thereby maintaining fixing reliability while reducing device complexity and simplifying assembly.
Solution Approach 2:
The lens holder structure itself provides the fixation function through its integrated pressing portion, which automatically secures the aperture when assembled. This self-service approach eliminates the need for additional fixing components or complex assembly steps, as the structure performs both support and fixation functions inherently.
3Volume of moving object
If the lens module size is reduced for miniaturization, then the device can be made thinner, but the lens fixation becomes less secure
Solution Approach 1:
The lens holder is formed from a single piece of metal material that provides both structural integrity and fixation strength. This monolithic construction ensures that the pressing portion maintains sufficient fixation strength even in a compact lens module design, preventing the lens from becoming loose while keeping the overall volume small for miniaturization.
Data Source
AI summary
A fixing assembly of reduced size, with a light-passing aperture for a lens holder and lens, includes a sidewall and an extending portion, the first sidewall is a ring-shaped structure, the extending portion is disposed on inner wall of the first sidewall, and the extending portion extends from an inner surface of the first sidewall. A top surface of the extending portion is recessed relative to a top surface of the first sidewall to form a groove. The lens is received in the groove and connected to the extending portion. The light-passing aperture is disposed on a surface of the lens away from the at least one extending portion, and the aperture is clamped with the lens holder.