HMD Face Interface With Variable Compliance for Stable Comfort

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Solution Overview

Problem

Existing head-mounted displays suffer from issues such as light pollution, discomfort due to clamping pressure, difficulty in adjusting for different head sizes, and poor fit, leading to reduced usability and enjoyment, especially during prolonged use.

Innovation Solution

A positioning and stabilising structure for head-mounted displays that includes a rear support structure with a hoop and adjustable components, such as extensible and resilient materials, and an interfacing structure with variable compliance to distribute force evenly, allowing for customizable fit and improved comfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If rigid clamping structures are used to hold the display unit in position, then the display unit is securely stabilized, but user comfort deteriorates due to concentrated clamping pressure on the face

Engineering Contradiction:

Improvestability of display unitVSAvoidclamping pressure discomfort

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The patent employs a flexible hoop structure made of extensible and resilient material that conforms to the user's head shape. This flexible hoop replaces rigid clamping structures, distributing pressure evenly across the head while maintaining stable positioning of the display unit through elastic resistance.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent utilizes materials with variable compliance and adjustable elasticity. The resilient material's elastic modulus and extensibility can be modified to balance between providing sufficient clamping force for stability and reducing pressure to comfortable levels, thereby resolving the contradiction between secure positioning and user comfort.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If a fixed-size interfacing structure is used, then manufacturing is simplified, but adaptability to different head sizes deteriorates

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidfit for different head sizes

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent implements an adjustable hoop structure that can dynamically change its dimensions to accommodate different head sizes. The extensible material allows the hoop to expand or contract as needed, providing a customized fit for each user while maintaining a standardized base design for manufacturing efficiency.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs resilient material with adjustable elastic properties that can be tuned during manufacturing or by the user. This allows a single interfacing structure design to adapt to various head sizes by changing the effective compliance and dimensions of the hoop, bridging the gap between manufacturing simplicity and user-specific adaptability.

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If uniform compliance material is used in the interfacing structure, then manufacturing is easier, but force distribution effectiveness deteriorates for complex facial geometries

Engineering Contradiction:

Improvematerial uniformityVSAvoidforce distribution effectiveness

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The patent incorporates zones of varying compliance within the interfacing structure. Different regions of the hoop or interfacing material have different elastic moduli or thicknesses, allowing areas of higher compliance to conform to complex facial geometries and distribute force effectively, while maintaining an overall uniform manufacturing process for the base structure.

Inventive Principle:

Principle #3Local quality

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

The solution provides enhanced comfort and reduced light pollution by distributing force evenly and adjusting to fit various head sizes, improving the overall user experience and usability of head-mounted displays.

Implementation Method 1

adjustable components, such as extensible and resilient materials

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS12535688B2Positioning, stabilising, and interfacing structures and system incorporating same

Publication Date: 2026.01.27 RESMED PTY LTD

AI summary

A head-mounted display system includes a positioning and stabilising structure structured and arranged to hold a display unit in an operational position over a user's face in use and an interfacing structure for the display unit constructed and arranged to be in opposing relation with the user's face. The interfacing structure comprises a substantially continuous face engaging surface adapted to contact the user's face around a periphery of the user's eyes. The interfacing structure comprises silicone. The interfacing structure is configured and arranged such that force applied to the user's face is distributed around the periphery thereof. The interfacing structure comprises a first compliance at a first region and a second compliance at a second region, wherein the first region and the second region are configured around the periphery of the interfacing structure to allow selective distribution of the force onto the user's face.