Flexible Circuit Board for Stereoscopic Camera Thermal Stability
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Solution Overview
Problem
Conventional stereoscopic cameras face misalignment issues due to thermal expansion and contraction of components, leading to inaccurate image capture, as existing designs lack effective mechanisms to isolate the circuit board from frame movement while maintaining optical axis alignment.
Innovation Solution
A stereoscopic-camera unit with a circuit board attached to a frame via flexible interconnects, allowing the circuit board sections to move relative to the frame while the flexible interconnects expand or contract, thereby isolating the floating board section from frame movement and maintaining optical axis alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the circuit board is rigidly attached to the frame, then structural stability is improved, but thermal expansion causes misalignment of image sensors
Solution Approach 1:
The circuit board is divided into multiple sections (first circuit board section, second circuit board section, and floating circuit board section) connected by flexible interconnects. This segmentation allows different parts of the circuit board to move independently relative to the frame during thermal expansion, preventing misalignment of the image sensors while maintaining overall structural stability.
Solution Approach 2:
The patent utilizes the flexible interconnects to change the physical state of the circuit board from rigid to flexible, allowing it to accommodate thermal expansion. The flexible interconnects enable the floating circuit board section to move relative to the frame, maintaining optical axis alignment despite temperature variations.
2Manufacturing precision
If the circuit board is made flexible to accommodate thermal expansion, then alignment stability is improved, but structural support and mounting stability deteriorate
Solution Approach 1:
The circuit board is segmented into rigid sections (first and second circuit board sections) that provide structural support and mounting stability, and a floating section connected by flexible interconnects. This segmentation allows the rigid sections to maintain structural integrity while the flexible interconnects accommodate thermal expansion, preventing misalignment.
Solution Approach 2:
The flexible interconnects act as intermediaries between the rigid circuit board sections and the frame. They transmit mechanical support while accommodating dimensional changes due to thermal expansion, thereby maintaining both structural support and alignment stability simultaneously.
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 solution minimizes the negative effects of thermal expansion, ensuring accurate and stable image capture by maintaining the alignment of image sensors' optical axes, even under temperature variations, and allows for secure mounting to structures for effective consumer traffic monitoring.
Implementation Method 1
Flexible interconnects are substantially flexible to allow expansion or contraction in a length thereof with expansion or contraction in the frame
Data Source
AI summary
An image capture device in accordance with the present disclosure includes a cover coupled to a mount to surround a stereoscopic-camera unit. The stereoscopic-camera unit includes a circuit board coupled to a frame. A floating board-section of the circuit board accommodates expansion and contraction of the frame.