Lens Module Vibration Lock with Elastic Pretightening
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Solution Overview
Problem
Existing lens modules for cameras, especially those used in aerial vehicles, tend to loosen and come off due to vibration, affecting photography stability.
Innovation Solution
A lens module design featuring a base with a stepped surface and internal thread, an elastic element providing pretightening force, and a receiving element with external and internal threads, along with an abutting member and gasket, securely fastens the optical lens to prevent loosening during vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed mode filter is applied to an aerial vehicle, then the filter can be used for photography, but the lens loosens and comes off due to vibration
Solution Approach 1:
The elastic element is pre-compressed between the receiving element and the base, creating a pretightening force that acts continuously to counteract vibration-induced loosening. This preliminary action ensures the lens remains securely attached during aerial vehicle operation
Solution Approach 2:
The elastic element provides a dynamic, self-adjusting connection that can accommodate vibration and movement while maintaining secure attachment. The elastic deformation allows the system to absorb vibrational energy rather than rigidly resisting it, preventing loosening
2Strength
If a threaded connection is used to secure the lens, then the lens attachment is strengthened, but the receiving element volume increases
Solution Approach 1:
The threaded portion is integrated directly into the receiving element structure, merging the fastening function with the receiving structure. This eliminates the need for separate mounting brackets or additional attachment components, reducing overall volume while maintaining secure threaded connection
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
The design effectively prevents the lens module from loosening and coming off during vibrations, while reducing the volume and manufacturing cost of the receiving element by using internal and external threads for secure attachment.
Implementation Method 1
an elastic element abutting against the threaded portion to provide a pretightening force for the receiving element
Data Source
AI summary
The present invention discloses a lens module, which includes a base, an elastic element, an optical lens, and a receiving element. The base includes a bottom portion and an extension portion extending vertically along the bottom portion. A stepped surface is formed where the bottom portion is connected with the extension portion. An internal thread is formed on an inner wall of the extension portion. The elastic element is disposed on the stepped surface. The receiving element is used for receiving the optical lens. The receiving element includes a threaded portion and a receiving portion connected with the threaded portion. The threaded portion is provided with an external thread. The external thread matches with the internal thread. The external thread connects the internal thread by threading to connect the receiving element with the base by threading. The elastic element abuts against the threaded portion to provide a pretightening force for the receiving element.