Optical Device Vibration Absorber Thickness Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical devices for projectors face a paradox where achieving high-resolution image projection is hindered by vibration noise, as noise suppression mechanisms can compromise motion followability and increase vibration, and complex mechanisms lead to increased size and noise.
Innovation Solution
An optical device with a movable frame, coupling frame, and stationary frame using a vibration absorbing member, where the thickness of the vibration absorbing member between the coupling frame and the stationary frame is greater than between the coupling frame and the shaft, allowing for effective noise suppression and motion followability without a complex configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If attachment members are used to suppress vibration noise, then noise is reduced, but motion followability deteriorates and accuracy decreases
Solution Approach 1:
The patent changes the physical parameters of the vibration absorbing member, specifically its thickness at different locations. The member has a first thickness between the coupling frame and first surface, and a second thickness between the coupling frame and second surface, where the second thickness is greater than the first. This differential thickness design allows the member to absorb vibration effectively while maintaining the accuracy of the reciprocal drive mechanism.
2Object-affected harmful factors
If complicated mechanisms are provided for micro vibration suppression, then noise is reduced, but device complexity increases and size grows
Solution Approach 1:
The patent extracts the vibration suppression function from a complex mechanical mechanism and implements it through a simple vibration absorbing member with specific thickness characteristics. This member is integrated into the existing structure between the coupling frame and stationary frame, eliminating the need for complicated suppression mechanisms while maintaining effectiveness.
Solution Approach 2:
The vibration absorbing member has non-uniform thickness distribution, with different thickness values at different locations. The first thickness region provides adequate vibration absorption, while the second thickness region (greater than the first) enhances suppression of micro vibrations. This local quality variation allows effective vibration control without requiring a complex overall structure.
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 enables low-noise, high-resolution image projection with a simple configuration by effectively absorbing micro-vibrations, ensuring accurate reciprocal drive and maintaining motion followability.
Implementation Method 1
a stationary frame to which the coupling frame in the optical device is fixed via a vibration absorbing member
Data Source
AI summary
An optical device includes an optical device including, a movable frame configured to hold an optical member, and a coupling frame to be coupled to the movable frame via an oscillation axis, and a stationary frame to which the coupling frame is fixed via a vibration absorbing member. The stationary frame has a shaft part to which the vibration absorbing member is attached, and a first surface and a second surface opposed to each other outside the shaft part, the coupling frame is disposed so as to be separated from the shaft part, the first surface, and the second surface with the vibration absorbing member, and a thickness of the vibration absorbing member existing between the coupling frame and the first surface and/or the second surface is thicker than a thickness of the vibration absorbing member existing between the coupling frame and the shaft part of the stationary frame.