Shake Correction Device with Composite Holder for Heat Dissipation
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Solution Overview
Problem
Existing shake correction devices for imaging elements are heavy and costly, with inadequate methods for fixing the imaging element to the holder and insufficient heat dissipation, leading to inefficiencies in weight, cost, and performance.
Innovation Solution
A shake correction device utilizing a drive mechanism with a magnet and yoke, a movable section held by a resin member with high thermal conductivity, and a voice coil motor, where the imaging element and holding member are adhered with adhesives, and the holding member is molded in a frame shape with aligned fibrous fillers to enhance thermal conductivity and adhesive area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal materials are used for the holding member, then strength and rigidity are improved, but weight and cost increase
Solution Approach 1:
The holding member is made from a composite material consisting of a resin matrix with fibrous fillers (such as carbon fibers or glass fibers) embedded within. This composite structure provides high strength and rigidity comparable to metal materials while significantly reducing the weight of the holding member, directly resolving the contradiction between strength and weight.
2Strength
If metal materials are used for the holding member, then strength and rigidity are improved, but cost increases
Solution Approach 1:
The composite material construction using resin and fibrous fillers offers a cost-effective alternative to metal materials. The resin matrix is generally less expensive than metal, and the fibrous fillers provide reinforcement at lower cost, achieving the required strength while reducing manufacturing cost.
Solution Approach 2:
By changing the material parameters from metal to composite resin with controlled fiber content and orientation, the holding member achieves adequate strength properties at a lower cost point, resolving the contradiction between strength and manufacturing cost.
3Ease of manufacture
If conventional adhesive application is used, then manufacturing simplicity is maintained, but adhesive area and bonding strength are insufficient
Solution Approach 1:
The holding member features localized protrusions that concentrate the adhesive application at specific high-stress areas between the imaging element and holding member. This local quality enhancement ensures adequate bonding strength is achieved at the critical interfaces while maintaining simple manufacturing processes and avoiding complex adhesive application systems.
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 reduces weight and cost while effectively correcting image shake and improving heat dissipation, ensuring precise positioning and reducing electromagnetic noise interference.
Implementation Method 1
a drive unit that includes a coil and a magnet and that moves the movable section relative to the base section by using an electromagnetic force
Implementation Method 2
a movable section that includes a holding member that holds a coil constituting the drive mechanism and the imaging element, and that supports the holding member in a movable manner
Data Source
AI summary
Provided is a shake correction device that can reduce weight and cost. A shake correction device drives an imaging element (210) by using a drive mechanism to perform a shake correction. The shake correction device includes: a fixing section (102) that includes a magnet (113b, 115b, 117b), a first yoke (103), and a second yoke (105) that constitute the drive mechanism (voice coil motor); and a movable section (101) that includes a holding member (104) that holds a coil (113a, 115a, 117a) constituting the drive mechanism and the imaging element (210), and that supports the holding member (104) in a movable manner, in which the imaging element (210) and the holding member (104) adhere to each other with a first adhesive (150a, 150b).