Head-Mountable Device Fit Detection Through Modular Component Selection
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Solution Overview
Problem
Existing head-mountable devices struggle to accommodate diverse facial features, requiring costly customization or extensive selection from a variety of devices to achieve a proper fit, which affects the optimal positioning and orientation of components for user experience.
Innovation Solution
A fitting device that includes modular components, such as a face seal and head engager, is used to detect user features and guide the selection of optimal components for a custom fit, utilizing sensors to measure facial regions and fiducial markers for precise alignment and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If custom customization is performed for each user to achieve proper fit, then fit precision is improved, but manufacturing cost increases
Solution Approach 1:
The fitting device is divided into modular components including a face seal assembly and a head engager assembly that can be independently selected and combined. This segmentation allows users to choose from standardized modules rather than requiring custom-built devices, achieving proper fit without custom manufacturing costs.
Solution Approach 2:
The system provides universal standardized modules that can be combined in different configurations to fit various users. The face seal assembly and head engager assembly serve multiple users through standardized interfaces and adjustable mechanisms, eliminating the need for custom customization while maintaining fit precision.
2Manufacturing precision
If extensive selection from various devices is made to achieve proper fit, then fit precision is improved, but device complexity increases
Solution Approach 1:
By segmenting the fitting device into standardized modular components, the system reduces selection complexity. Users choose from discrete, pre-engineered modules rather than navigating through extensive variations of complete devices, simplifying the selection process while maintaining fit precision.
Solution Approach 2:
The system uses adjustable parameters within standardized modules (such as head engager size and face seal configuration) to accommodate different users. This approach provides fit precision through parameter adjustment rather than requiring extensive device selection, reducing overall system complexity.
3Ease of manufacture
If modular components are used to reduce costs, then manufacturing cost is reduced, but fit precision may worsen
Solution Approach 1:
The system replaces manual measurement and custom fabrication with automated 3D scanning and computer-generated fitting recommendations. This substitution ensures that standardized modular components achieve precise fits through digital modeling and virtual try-on techniques, maintaining fit precision while reducing manufacturing costs.
Solution Approach 2:
The system incorporates feedback mechanisms where users can try on virtual representations of the modular fitting device, and the system adjusts recommendations based on actual fit feedback. This iterative feedback process ensures that standardized modules achieve optimal fit precision for each user.
4Measurement precision
If 3D scanning and virtual try-on are implemented to improve fit detection, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system uses an intermediary smartphone application as a mediator between the 3D scanning hardware and the final fitting recommendations. The smartphone serves as a portable, accessible platform that handles image capture, 3D reconstruction, and virtual try-on simulations, improving fit detection precision without requiring complex dedicated hardware systems.
Data Source
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AI summary
A fitting device that can be worn by a user to facilitate detection of the user's features and guide the user to selecting components (e.g., modules) of a head-mountable device that will provide the best fit when assembled together. By providing head-mountable devices with modular features, certain modules can provide a custom fit without requiring the entire head-mountable device to be custom fitted to each user. An electronic device can be operated to guide a user to select the optimal components, such as a face seal and/or head engager for use with an HMD module.