Adjustable Light Seal Module for Head-Mounted Display Fit

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Solution Overview

Problem

Existing head-mountable devices require customization to fit individual facial features, leading to high costs and limited accessibility, as they need to be tailored for each user's unique dimensions and preferences.

Innovation Solution

A head-mountable device with an adjustable light seal module and securement system that uses sensors to detect user features and activities, allowing for real-time adjustments in fit and alignment to optimize the display position and orientation for each user.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If head-mountable devices are customized to fit individual facial features, then fit quality and user comfort are improved, but manufacturing cost and device complexity increase

Engineering Contradiction:
Improveuser comfortVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The head-mountable device incorporates adjustable components including a movable display assembly that can shift position along the optical axis, an adjustable headband with variable tension, and reconfigurable nose pads that can be positioned at different locations. These dynamic adjustment mechanisms allow a single device design to adapt to different user facial features without requiring multiple customized versions, thereby improving user comfort while avoiding the complexity of mass customization.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If head-mountable devices are customized to fit individual facial features, then fit quality is improved, but manufacturing cost increases

Engineering Contradiction:
Improvefit qualityVSAvoidmanufacturing cost
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The device employs universal adjustment mechanisms that can accommodate a wide range of facial dimensions and shapes. The display assembly can be positioned at multiple locations, the headband can be adjusted for different head sizes, and the nose pads can be repositioned to fit various nose structures. This multi-functional adjustment capability allows a single standardized device to serve multiple user types, eliminating the need for expensive individual customization while maintaining high fit quality.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Manufacturing precision

If the display element is positioned optimally for each user, then visual experience is improved, but device complexity and adjustment mechanisms increase

Engineering Contradiction:
Improvedisplay alignmentVSAvoidadjustment mechanisms
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The display assembly is mounted on a movable mechanism that allows it to shift position along the optical axis and adjust its orientation. This dynamic positioning capability enables the display to be optimally aligned with the user's eyes without requiring extremely precise manufacturing tolerances. The adjustment mechanism compensates for variations in user facial dimensions, achieving high display alignment precision while using relatively simple mechanical components.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11982816B1Wearable devices with adjustable fit
Publication Date: 2024.05.14 APPLE INC
  • US11982816B1 patent drawing
  • US11982816B1 patent drawing
  • US11982816B1 patent drawing

AI summary

A head-mountable device can include an ability to adjust a fit as needed for a particular user or activity. For example, a light seal module that provides engagement of a user's face and transmits light from a display element can be coupled to an HMD module. The light seal module can be provided in a wide variety of adjustable sizes and/or shapes to allow any given user to select an appropriate one for optimal alignment of an HMD module. The head-mountable device and/or other electronic devices can be operated to guide a user to select the optimal light seal module arrangement for use with an HMD module. For example, the head-mountable device or another device can include sensors for detecting an identity of a user, features of the user's face, forces distributed on the face when worn, and/or an activity being performed.