OIS Flexible Wiring Layout for Miniaturized Lens Barrels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The miniaturization of lens barrels is hindered by the space required for routing a flexible printed wiring board used to energize position detection sensors in optical image stabilization units.
Innovation Solution
An optical image stabilization unit design that overlaps the bending portion and sensor mounting portion of the flexible printed wiring board when viewed from the optical axis direction, eliminating the need for additional space and allowing for compact integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible printed wiring board is routed to energize the position detection sensor in the optical image stabilization unit, then the sensor can be powered and function properly, but the space required for routing the wiring board hinders miniaturization of the lens barrel
Solution Approach 1:
The patent applies dimensional change by overlapping the bending portion and sensor mounting portion of the flexible printed wiring board when viewed from the optical axis direction. This transforms a two-dimensional routing problem into a three-dimensional space utilization solution, allowing the wiring board to occupy vertical space rather than horizontal space, thereby enabling lens barrel miniaturization while maintaining sensor power supply functionality
Solution Approach 2:
The flexible printed wiring board is designed with overlapping portions where the bending portion and sensor mounting portion are disposed to overlap each other. This nesting arrangement allows one part of the wiring board to be positioned within or adjacent to another part, maximizing space utilization and eliminating waste space, which directly addresses the miniaturization requirement
Data Source
AI summary
An optical image stabilization unit capable of being miniaturized is provided. The optical image stabilization unit includes a fixed member, a lens, a movable member that holds the lens and is movable on a plane, which is substantially perpendicular to an optical axis direction, in the fixed member, a position detection sensor held by the movable member, and a flexible printed wiring board. The flexible printed wiring board includes a fixed side holding portion that is fixed to the fixed member, a movable side holding portion that is fixed to the movable member, a bending portion that connects the fixed side holding portion and the movable side holding portion, and a sensor mounting portion, on which the position detection sensor is mounted. When the flexible printed wiring board is viewed from the optical axis direction, the bending portion and the sensor mounting portion are disposed to overlap each other.