Lens Driver Elastic Member Power Supply Integration
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Solution Overview
Problem
Existing lens driving devices face challenges in durability against mechanical shock, structural complexity, weight, and size due to suspension wire support mechanisms and the need for separate power supply structures and additional components like yokes for OIS mechanisms.
Innovation Solution
A lens driving device with a movable member supported through contact by a base member via elastic members, allowing movement in both optical and perpendicular directions, using elastic members for power supply and eliminating the need for separate power structures and yokes, thus reducing complexity and component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If suspension wires are used to support the lens frame, then the lens frame can move perpendicular to the optical axis, but the unit structure becomes complex due to the need for a structure that prevents bending or flexing under large forces
Solution Approach 1:
The patent combines the support function and power supply function into a single elastic member. The elastic member both supports the movable member and serves as a power supply path, eliminating the need for separate suspension wires and power supply structures, thus reducing unit structure complexity while maintaining lens frame movement capability
Solution Approach 2:
The elastic member performs multiple functions simultaneously: it provides mechanical support, enables movement, and serves as an electrical power supply path. This multi-functionality reduces the number of components needed and simplifies the overall unit structure
2Reliability
If contact support through spherical bodies is used, then durability against mechanical shock is improved, but the unit weight increases due to the need for additional yoke components
Solution Approach 1:
The patent eliminates the separate yoke component by integrating the power supply function directly into the elastic member. The movable member is supported through contact by the base member via the elastic member, which also serves as the power supply path, removing the need for additional yoke components and reducing unit weight while maintaining durability
Solution Approach 2:
The patent extracts and eliminates the unnecessary yoke component from the system. By using the elastic member as both the support mechanism and power supply path, the yoke is rendered redundant and can be removed, thereby reducing unit weight while preserving shock durability through the contact support mechanism
3Use of energy by moving object
If separate flexible printed substrate is used for power supply, then the AF driving power can be supplied, but the unit size increases due to the need to secure space for the power supplying structure
Solution Approach 1:
The patent merges the power supply function with the mechanical support function by using the elastic member as both the support structure and the power supply path. This integration eliminates the need for a separate flexible printed substrate, thereby reducing the unit size while maintaining the capability to supply power to the AF driving mechanism
Solution Approach 2:
The elastic member serves as a multi-functional component that provides both mechanical support and electrical power transmission. This universality eliminates the need for dedicated power supply structures like flexible printed substrates, reducing the space required and thereby minimizing unit size
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 provides durability against mechanical shock, reduces the number of components and weight, and minimizes the size of the unit by using elastic members for both support and power supply, eliminating the need for complex structures and additional components.
Implementation Method 1
an elastic member that is connected on one end to the movable member side and connected on the other end to the base member side, to press the movable member elastically against the base member side
Implementation Method 2
power is supplied to the first driving portion, which is provided on the movable member side, through the elastic member from an interconnecting circuit that is provided on the base member
Data Source
AI summary
The lens driver having a lens frame; a movable member supports the lens frame so as to be able to move in the direction of the optical axis; a base member supporting the movable member through contact so as to enable movement in the directions perpendicular to the optical axis; elastic members with one end connected to the movable member and the other end connected to the base member, for pressing the movable member against the base member side elastically; a first driving portion for driving the lens frame in the direction of the optical axis; and second driving portions for driving the lens frame in directions that are perpendicular to the optical axis, wherein: power is supplied to the first driving portion, which is provided on the movable member side, through the elastic members from an interconnecting circuit that is provided on the base member.