Pan-Tilt Camera FPC Layout for Compact Durable Wiring
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Solution Overview
Problem
Conventional pan tilt camera wiring configurations using flexible printed circuits become complicated due to the need for multiple circuits to accommodate both pan and tilt rotations, leading to potential durability and space constraints.
Innovation Solution
The implementation of a flexible printed circuit design featuring arc-shaped portions coaxial with each rotation axis, allowing for bending around orthogonal axes, which simplifies the configuration and maintains coaxiality with the pan and tilt axes, reducing complexity and improving durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible printed circuits are used for both pan and tilt rotations, then the wiring can accommodate rotational movements, but the configuration becomes complicated
Solution Approach 1:
The patent combines the wiring structures for pan and tilt rotations into a single integrated flexible printed circuit board. The FPC is configured with a first bent portion for pan rotation and a second bent portion for tilt rotation, merging what would traditionally require separate wiring solutions into one unified structure that accommodates both rotational movements simultaneously
Solution Approach 2:
The flexible printed circuit board serves multiple functions: it provides electrical connections for both pan and tilt rotations, accommodates both rotational movements through its bent portions, and maintains signal transmission stability across different orientations. This multi-functional design eliminates the need for separate wiring systems for each rotation axis
2Ease of manufacture
If conventional wiring structures are used, then connections can be made, but the overall size of the camera increases
Solution Approach 1:
The flexible printed circuit board incorporates bent portions with specific curvature radii that match the rotation centers of pan and tilt movements. The first bent portion has a curvature radius R1 centered on the pan rotation axis, and the second bent portion has a curvature radius R2 centered on the tilt rotation axis, allowing the wiring to follow rotational paths without increasing overall camera dimensions
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement of the bent portions to accommodate rotational movements. The FPC is folded and positioned in multiple dimensions, with bent portions arranged to follow the rotational paths of both pan and tilt axes, efficiently using available space within the compact camera structure
Data Source
AI summary
An imaging apparatus according to the present invention includes a lens unit including an image sensor, and configured to be rotatable about a tilt rotation axis, a rotating unit configured to be rotatable about a pan rotation axis, a non-rotating unit to which the rotating unit is rotatably attached, and a flexible printed circuit configured to connect the lens unit with the non-rotating unit. The flexible printed circuit includes an arc-shaped first portion coaxial with the pan rotation axis in a plane perpendicular to the pan rotation axis, and an arc-shaped second portion coaxial with the tilt rotation axis in a plane perpendicular to the tilt rotation axis. The first portion is bent around an axis orthogonal to the pan rotation axis.