Adjustable Facial Interface Structure for Custom HMD Fit
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Solution Overview
Problem
Current facial interfaces for head-mounted devices are often made from a one-size-fits-all mold, leading to pressure points and discomfort for users with different facial features and head shapes, as they lack sufficient adjustability.
Innovation Solution
The implementation of adjustable facial interfaces with linear actuators that allow for translational and rotational adjustability, enabling the interface to conform to a wide range of facial shapes and sizes while maintaining stability during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a one-size-fits-all mold is used for the facial interface, then manufacturing simplicity is improved, but user comfort and adaptability deteriorate due to pressure points and discomfort
Solution Approach 1:
The facial interface incorporates movable components including a movable bridge that can translate along the nasal bridge and adjustable temples that can rotate and translate, transforming a static one-size-fits-all structure into a dynamic system that adapts to individual facial geometries while maintaining manufacturing efficiency
Solution Approach 2:
The facial interface is divided into multiple independently adjustable segments including the bridge, temples, and earpieces, each capable of movement to accommodate different facial features, allowing the system to maintain manufacturing simplicity while achieving high adaptability
2Adaptability or versatility
If adjustable components are added to the facial interface, then adaptability and user comfort are improved, but device complexity increases
Solution Approach 1:
The design employs dynamic elements such as the movable bridge with translation capability and rotatable temples that provide multiple adjustment options, achieving high adaptability through mechanical movement rather than electronic controls, thereby managing complexity
Solution Approach 2:
The facial interface allows adjustment of multiple geometric parameters including bridge position, temple angle, and earpiece orientation, enabling customization to individual facial geometries while maintaining a relatively simple mechanical structure without complex electronics
3Adaptability or versatility
If the facial interface is made more flexible to conform to different faces, then adaptability is improved, but structural stability deteriorates
Solution Approach 1:
The facial interface uses dynamic components like the movable bridge and adjustable temples that can move to conform to different facial shapes, while the overall frame structure maintains rigidity to ensure structural stability during use
Solution Approach 2:
The interface is segmented into flexible adjustment components and a stable base structure, allowing specific parts to conform to facial features while the main structure maintains its integrity and stability
Data Source
AI summary
A facial interface for a head-mounted display device can include a first frame, a second frame, and a linear actuator movably coupling the first frame to the second frame. The linear actuator can be coupled to the first frame at a first end and defines a spherical portion at a second end opposite the first end. The facial interface can further include a plate movably secured to the second frame, and the plate can define a slot configured to receive the spherical portion of the linear actuator.