Head-Mounted Display Auto-Fit Mechanism for Faster Adjustment
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Solution Overview
Problem
Adjustment structures in head-mounted displays are time-consuming and require trial and error to achieve a comfortable fit for users with varied head shapes and sizes.
Innovation Solution
Head-mounted displays incorporate passive or active adjustment structures that automatically conform to the user's head shape and size, using mechanisms such as motor-driven adjustment, pneumatic or shape-memory alloy devices, and passive mechanical components to adjust the fit without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual adjustment structures are used in head-mounted displays, then the device can be adjusted to fit different head shapes and sizes, but the adjustment process becomes time-consuming and requires trial and error
Solution Approach 1:
The head-mounted display incorporates sensors that automatically detect the user's head shape and size, and the adjustment mechanism autonomously modifies the headband tension and positioning without requiring manual intervention. The system serves itself by using sensor data to directly control the adjustment mechanism, eliminating the trial-and-error manual adjustment process while maintaining adaptability to different head geometries
Solution Approach 2:
The patent replaces traditional manual mechanical adjustment mechanisms with an automated system that uses sensors to detect head geometry and electronically controls the adjustment mechanism. This substitution of manual mechanical operation with sensor-based electronic control reduces adjustment time while preserving the ability to adapt to various head shapes and sizes
2Loss of time
If automated adjustment mechanisms are implemented, then adjustment time is reduced and fit is improved, but device complexity increases
Solution Approach 1:
The adjustment mechanism is integrated with the existing head-mounted display structure, serving multiple functions: it provides automated tension adjustment, maintains secure fit during movement, and adapts to different head shapes. By combining these functions into a single integrated system rather than separate components, the patent reduces overall device complexity while achieving automated adjustment
Solution Approach 2:
The system automatically adjusts physical parameters such as headband tension, spacing between contact points, and positioning of the display device based on sensor-detected head geometry. By dynamically changing these parameters through automated control rather than requiring complex mechanical reconfiguration, the patent reduces adjustment time without proportionally increasing device complexity
Data Source
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AI summary
A head-mounted display to be worn by a user includes a housing, and an eye chamber to be positioned adjacent to eyes of the user. A support assembly includes a headband and an adjustment mechanism that is operable to change fit of the headband relative to the head of the user in response to a control signal, wherein the adjustment mechanism includes a feedback component, and the control signal is generated based on output from the feedback component.