Optical Vibrator Assembly for Uniform Adhesive Layer Thickness
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Solution Overview
Problem
Existing imaging units face challenges in achieving a uniform adhesive layer thickness between a light transmission body and a vibrator, leading to deteriorated vibration performance and potential deformation of the vibrator due to non-uniform pressure application.
Innovation Solution
Incorporating a joining member between the light transmission body and the vibrator to ensure a uniform adhesive layer thickness, using a rectangular-shaped joining member to uniformly distribute pressure and prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If pressure is applied to the adhesive by applying a force to an end of the vibrator on an opposite side, then the adhesive can be hardened, but the pressure distribution becomes non-uniform causing variations in adhesive layer thickness
Solution Approach 1:
A pressing member is introduced as an intermediary between the application unit and the vibrator. This pressing member has a pressing surface that contacts the vibrator's end surface, allowing force to be applied more uniformly across the adhesive area. The intermediary structure distributes the applied force to achieve both adequate bonding strength and uniform adhesive layer thickness.
Solution Approach 2:
The design changes the geometric parameters of the vibrator, specifically making the end surface area larger than the adhesive application area. This parameter change allows the pressing force to be distributed over a larger area, improving pressure uniformity while maintaining adequate bonding strength through proper force magnitude selection.
2Strength
If a force is applied to the end of the vibrator to harden the adhesive, then bonding is achieved, but the vibrator may be deformed due to its shape
Solution Approach 1:
The pressing member serves as a mediator that distributes the compressive force uniformly across the vibrator's end surface. This intermediate structure prevents stress concentration that would cause vibrator deformation, while still transmitting sufficient force to harden the adhesive through the larger contact area.
3Ease of manufacture
If the adhesive layer thickness varies, then the structure can be assembled, but vibration performance deteriorates
Solution Approach 1:
A pressing member with a pressing surface is used to apply uniform pressure during adhesive hardening. This mechanical pressure system ensures consistent adhesive layer thickness across the bonding area, maintaining vibration performance while allowing feasible assembly of the components.
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 maintains consistent vibration performance by ensuring a uniform adhesive layer thickness, preventing deformation of the vibrator and enhancing the reliability of the imaging unit.
Implementation Method 1
a piezoelectric element connected the second portion at the second end of the vibrator and constructed to vibrate the vibrator
Implementation Method 2
a vibrator having a cylindrical body having a first end with a first portion that contacts the joining member, and a second end with a second portion, the vibrator constructed to vibrate the light transmission body through the joining member
Data Source
AI summary
An optical device that includes: a light transmission body that transmits light having a predetermined wavelength; a housing that holds the light transmission body; a joining member adhered to part of the light transmission body; a vibrator having a cylindrical body having a first end with a first portion that contacts the joining member, and a second end with a second portion, the vibrator constructed to vibrate the light transmission body through the joining member; and a piezoelectric element connected the second portion at the second end of the vibrator and constructed to vibrate the vibrator.