Stretchable Fabric Cover for Head-Mounted Device Optical Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Head-mounted devices struggle to accommodate variations in interpupillary distances among users, as existing mechanisms often fail to effectively adjust the positions of optical modules while hiding internal components from view.
Innovation Solution
A head-mounted device with adjustable optical modules and a cosmetic covering made from stretchable fabric, featuring warp knit and zig-zag strands that provide four-way stretch and opacity, allowing the modules to move relative to each other while concealing internal structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a rigid cosmetic covering is used to hide internal components, then cosmetic appeal is improved, but adaptability to accommodate optical module movement deteriorates
Solution Approach 1:
The patent applies a flexible fabric cover instead of a rigid cosmetic covering. The fabric cover can stretch and deform to accommodate the movement of optical modules while maintaining cosmetic appeal by concealing internal components. The flexibility of the fabric allows it to adapt to changing positions of the optical modules without compromising the aesthetic appearance of the device.
Solution Approach 2:
The cosmetic covering transitions from a static rigid structure to a dynamic flexible fabric cover that can change shape and stretch. This dynamic property allows the cover to adapt to the movement of optical modules, providing both cosmetic appeal and adaptability simultaneously.
2Adaptability or versatility
If the cosmetic covering is made stretchable to accommodate optical module movement, then adaptability is improved, but ability to hide internal components deteriorates
Solution Approach 1:
The flexible fabric cover maintains its ability to conceal internal components while accommodating movement. The fabric's flexibility allows it to stretch and deform without becoming transparent or revealing internal structures, thus maintaining both adaptability and cosmetic coverage.
3Stability of the object's composition
If a non-stretchable cosmetic covering is used to maintain structure, then structural stability is improved, but ease of adjustment for different users deteriorates
Solution Approach 1:
The cosmetic covering transitions from a static rigid structure to a dynamic flexible fabric cover that can change shape and stretch. This dynamic property allows the cover to adapt to the movement of optical modules, providing both cosmetic appeal and adaptability 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
Enables precise adjustment of optical module positions to suit different interpupillary distances, maintaining cosmetic appeal and hiding internal components, thereby enhancing user compatibility and device aesthetics.
Implementation Method 1
The first strands may be elastic and may provide stretch in the warp direction
Implementation Method 2
the second strands may be covered strands that provide stretch in the weft direction
Implementation Method 3
The covered strands may have a drawn textured yarn covering that forms a fuzzy and opaque layer for hiding electrical components
Data Source
AI summary
Electronic devices such as head-mounted electronic devices may include displays for presenting images to users. To accommodate variations in the interpupillary distances associated with different users, a head-mounted device may have left-eye and right-eye optical modules that move with respect to each other. To hide internal structures from view, the rear of a head-mounted device may be provided with a stretchable fabric cover with openings for receiving optical modules. The fabric cover may have first strands forming a warp knit layer with diamond-shaped openings and second strands that zig-zag back and forth within the diamond-shaped openings. The first strands may stretch in the warp direction, while the second strands may stretch in the weft direction. The second strands may have a fuzzy covering for hiding electrical components even as the diamond-shaped openings expand when the fabric is stretched.