Camera Shutter Elastic Support for Vibration and Position Stability
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Solution Overview
Problem
Existing imaging devices face challenges in effectively suppressing vibrations caused by shutter operation and maintaining the position of the shutter unit with high accuracy, particularly during camera shake.
Innovation Solution
The imaging device employs a shutter unit supported by at least three elastic members disposed on its outer periphery, with intersecting elastic forces in specific directions to stabilize the shutter unit, and incorporates a shake correction mechanism that moves the image sensor or vibration-proof lens to correct shake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the shutter unit is supported by elastic members to suppress vibration, then vibration suppression is improved, but position holding accuracy deteriorates
Solution Approach 1:
The patent applies local quality by making the elastic members have different elastic forces in different directions. Specifically, the elastic force in the optical axis direction (first direction) is made larger than the elastic force in the plane perpendicular to the optical axis (second direction). This anisotropic elastic property allows the system to suppress vibrations effectively while maintaining position holding accuracy, as the stronger elastic force in the optical axis direction prevents excessive displacement during shutter operation.
Solution Approach 2:
The patent employs dynamics by allowing the shutter unit to oscillate within a controlled range against the elastic forces of the elastic members. The shutter unit is supported from a side of the outer periphery by the elastic members in a state where the shutter unit is oscillatable, creating a dynamic support system that can adapt to vibrations while maintaining positional stability through the balanced elastic forces.
2Object-affected harmful factors
If multiple elastic members are used to support the shutter unit, then vibration suppression is improved, but device complexity increases
Solution Approach 1:
The patent merges the functions of multiple elastic members by disposing them on the outer periphery of the shutter unit with their first directions intersecting at a specific spot. This configuration allows the elastic members to work together as a unified support system, where the combined elastic forces provide both vibration suppression and position holding functions, reducing the need for additional complex mechanisms.
Solution Approach 2:
The patent applies dimensionality change by arranging elastic members in three-dimensional space with different orientation directions. The elastic members are disposed on the outer periphery and extend in different directions (first direction along optical axis, second direction perpendicular to optical axis), creating a spatial arrangement that provides comprehensive vibration suppression while maintaining structural efficiency.
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
This configuration achieves both precise shutter position holding and effective shake suppression, ensuring clear and stable image capture by minimizing vibrations.
Implementation Method 1
each of the at least three or more elastic members is elastically deformed in a first direction that is a direction in which each of the at least three or more elastic members presses the shutter unit from the frame
Implementation Method 2
a shake correction mechanism that moves the image sensor in a plane perpendicular to an optical axis of the imaging optical system to correct a shake
Data Source
AI summary
An imaging device that includes a shutter unit including a shutter adjusting an amount of subject light incident on an image sensor through an imaging optical system. The shutter unit being mounted on a frame. The at least three or more elastic members are disposed on an outer periphery of a contour of the shutter unit in a front view and press the shutter unit from the frame to support the shutter unit, each of the at least three or more elastic members is elastically deformed in a first direction that is a direction in which each of the at least three or more elastic members presses the shutter unit from the frame and a second direction that is a direction perpendicular to the first direction, and the first directions of the at least three or more elastic members intersect with each other at a specific spot inside the contour.