Imaging Device Shutter Vibration Isolation Mount Base
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Solution Overview
Problem
Imaging devices with mechanical shutters positioned near the image shake correcting unit face challenges in accurately correcting image shake due to vibration from the shutter's opening and closing operation, which is transmitted to the image shake correcting mechanism.
Innovation Solution
The imaging device incorporates a shutter mechanism adjacent to the imaging element's light receiving surface, with a mount base supporting the lens mount and image shake correcting unit, where the exterior housing has a lower natural frequency than the mount base, and optionally includes attenuation members to minimize vibration transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the mechanical shutter is disposed in the immediate vicinity of the imaging element, then the device structure is simplified and compact, but vibration from the shutter operation is transmitted to the image shake correcting unit, degrading correction accuracy
Solution Approach 1:
The device is divided into separate vibration isolation zones: the shutter mechanism is isolated from the image shake correcting unit through distinct mounting structures. The front housing supports the shutter mechanism while the mount base supports the image shake correcting unit, creating spatial and structural segmentation that prevents vibration transmission despite close physical proximity.
Solution Approach 2:
The mount base acts as an intermediary structure between the exterior housing and the image shake correcting unit. By supporting the image shake correcting unit separately from the shutter mechanism's mounting point on the front housing, the mount base serves as a vibration isolation mediator that prevents direct transmission of shutter-induced vibrations to the sensitive imaging components.
2Length of moving object
If the mechanical shutter is positioned close to the imaging element, then the light path is shortened and the device is more compact, but the vibration from shutter operation directly affects the image shake correction mechanism
Solution Approach 1:
The support structure is segmented into distinct zones: the front housing supports the shutter mechanism while the mount base supports the image shake correcting unit. This segmentation allows the light path to remain short while creating separate vibration zones, maintaining both compactness and vibration stability.
Solution Approach 2:
Different parts of the housing structure have different functional qualities: the front housing is optimized for shutter mechanism support and light path geometry, while the mount base is optimized for stable support of the image shake correcting unit. This local differentiation allows short light path and vibration stability to coexist.
3Volume of moving object
If the shutter mechanism is disposed adjacent to the light receiving surface, then the device achieves a compact design, but vibration from shutter operation is transmitted to the imaging element and correction mechanism
Solution Approach 1:
The device structure is segmented into separate support systems: the shutter mechanism is mounted on the front housing while the image shake correcting unit is mounted on the mount base. This segmentation maintains compact device volume while creating vibration isolation pathways that prevent harmful vibration transmission to the imaging element.
Solution Approach 2:
The mount base serves as an intermediary support structure that decouples the image shake correcting unit from direct vibration sources. By providing a separate mounting path for the correction mechanism, the mount base mediates between the compact device structure and the need to isolate vibration-sensitive 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
This configuration effectively attenuates vibration from the shutter mechanism, improving image shake correction performance and maintaining compact device design by isolating the shutter mechanism's vibration from the image shake correcting unit.
Implementation Method 1
an exterior housing that has an opening into which the lens mount is inserted, a shutter mechanism that has, at a position adjacent to a light receiving surface of the imaging element in the image shake corrector, an opening through which a member blocking light incident on the light receiving surface passes, and a mount base that is disposed between the exterior housing and the shutter mechanism, to support the lens mount, in which a part of the exterior housing supports the shutter mechanism, the mount base supports the image shake corrector, and the mount base is supported by the part of the exterior housing
Data Source
AI summary
A digital camera includes an image shake corrector that moves an imaging element to perform image shake correction, a shutter mechanism that has, at a position adjacent to a light receiving surface of the imaging element of the image shake corrector, an opening through which a member blocking light incident on the light receiving surface passes, an exterior housing that supports the shutter mechanism, and a mount base that supports the image shake corrector, in which the mount base is supported by the exterior housing.