Vibrating Device Dust Removal with Pressed Support
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Solution Overview
Problem
Dust accumulation on optical elements in imaging apparatuses, such as digital cameras and projectors, leads to image quality issues due to reflected shadows, and existing dust removal mechanisms are not effective in maintaining high vibration amplitude and efficiency.
Innovation Solution
A vibrating device with a plate-like dust-proof member, a vibration-applying member, a holder, a sealing member, and pressing supporting sections that elastically press the dust-proof member, maintaining high rigidity of the supporting sections to minimize vibration loss and maximize dust removal efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a dust-proof member is supported by a receiving member with contact at vibration nodes, then the dust-proof member can be supported during vibration, but the vibration amplitude is reduced due to support at node positions
Solution Approach 1:
The patent introduces a pressing member that applies force in the optical axis direction (third dimension) to press the dust-proof member against the receiving member. This dimensional approach allows the system to maintain both stable support and high vibration amplitude by utilizing the pressing force to compensate for the node-contact support limitation.
Solution Approach 2:
The patent changes the support configuration from simple node-contact support to pressed support where the dust-proof member is pressed against the receiving member by the pressing member. This parameter change in the support mechanism allows maintaining vibration amplitude while ensuring stable support during operation.
2Stability of the object's composition
If the dust-proof member is pressed against the receiving member, then support stability is improved, but vibration loss increases due to contact friction
Solution Approach 1:
The patent introduces a vibration-applying member as an intermediary that applies vibration to the dust-proof member at positions away from the contact region. This intermediary approach allows the pressing force to maintain stability while the vibration is applied through a different path that minimizes frictional energy loss at the contact interface.
Solution Approach 2:
The patent applies different functions to different regions: the pressing member and receiving member provide stable support at the contact region, while the vibration-applying member generates vibration at a different location. This local differentiation allows the system to optimize both stability and vibration efficiency without compromising either function.
3Strength
If a pressing member with low rigidity is used to press the dust-proof member, then vibration amplitude is maintained, but the pressing force is insufficient to ensure stable support
Solution Approach 1:
The patent divides the pressing member into multiple pressing sections that can independently press against the dust-proof member at different locations. This segmentation allows the system to distribute the pressing force to maintain stability while preserving vibration amplitude through the vibration-applying member's action.
Solution Approach 2:
The patent combines the pressing function and vibration application function into an integrated system where the pressing member provides stable support and the vibration-applying member generates vibration. This merging of functions allows the system to achieve both stable support and high vibration amplitude simultaneously.
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 solution effectively removes dust from optical elements by generating high vibration amplitude with minimal vibration loss, ensuring high image quality and robustness against external forces.
Implementation Method 1
a vibration-applying member arranged along an end side outer circumferential portion of the dust-proof member and configured to vibrate the dust-proof member
Implementation Method 2
pressing sections configured to elastically press the dust-proof member toward the sealing member
Data Source
AI summary
A vibrating device includes a transducer including a plate-like dust-proof member and a vibration-applying member configured to vibrate the dust-proof member, a holder arranged a predetermined space apart from the dust-proof member, a sealing member configured to seal a space between the dust-proof member and the holder, and a pressing supporting member having formed therein pressing sections configured to press the dust-proof member, supporting sections for maintaining supporting of the dust-proof member or the vibration-applying member when an external force is applied to the dust-proof member, and fixing sections with respect to the holder. The pressing sections are respectively provided in positions symmetrical to each other across an imaginary axis passing a center of gravity of the transducer. Rigidity of the supporting sections is set higher than rigidity of the pressing sections.