Head-Mountable Device Fit Guidance for Facial Alignment and Comfort

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Solution Overview

Problem

Existing head-mountable devices often fail to achieve optimal positioning and alignment with respect to the user's face, leading to suboptimal user experience and discomfort due to improper placement.

Innovation Solution

The system includes sensors to detect facial features, forces, and alignment, providing guidance for optimal placement and alignment of the head-mountable device through user interfaces, adjusting components like displays and light seals to ensure comfort and alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual placement is used for head-mountable devices, then device complexity is reduced, but positioning precision and alignment accuracy deteriorate

Engineering Contradiction:
Improvepositioning precisionVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system uses sensors integrated into the head-mountable device to automatically detect facial features, forces, and alignment without requiring manual measurement or external tools. The device self-adjusts based on sensor feedback, eliminating the need for complex manual positioning procedures while achieving high precision alignment.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Sensors continuously monitor the device's position, forces applied to the face, and alignment with facial features, providing real-time feedback to the control system. This feedback loop enables automatic adjustment of the device position and orientation to achieve optimal alignment without increasing manual complexity.

Inventive Principle:
Principle #23Feedback

2Adaptability or versatility

If fixed positioning is used for head-mountable devices, then device complexity is reduced, but adaptability to different users and conditions deteriorates

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system transitions from fixed positioning to dynamic adjustment, where the device can automatically modify its position, orientation, and force distribution based on real-time sensor data about the user's face and usage conditions. This dynamic adaptability accommodates different users and scenarios without requiring multiple fixed configurations.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control system changes key parameters such as position coordinates, orientation angles, and force magnitude based on sensor inputs. By dynamically adjusting these parameters in response to detected facial features and usage conditions, the system achieves high adaptability while maintaining a unified device structure.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If frequent adjustments are made during use, then alignment accuracy is improved, but user comfort and ease of operation deteriorate due to repeated manipulation

Engineering Contradiction:
Improvealignment accuracyVSAvoidease of operation
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The device performs self-alignment by automatically detecting misalignment through sensors and adjusting its own position without requiring user intervention. This eliminates the need for users to frequently manually adjust the device, maintaining both high alignment accuracy and ease of operation throughout usage.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Real-time sensor feedback continuously monitors alignment status and triggers automatic corrections when deviations are detected. This closed-loop control maintains precise alignment without requiring user awareness or action, preserving ease of operation while ensuring continuous accuracy.

Inventive Principle:
Principle #23Feedback

4Reliability

If force distribution is not optimized, then device complexity is reduced, but user comfort and reliability of wear deteriorate

Engineering Contradiction:
Improvereliability of wearVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system dynamically adjusts force distribution across the device components based on real-time sensor data about the user's facial geometry and usage conditions. This dynamic optimization ensures comfortable and reliable wear by adapting force application to individual users without requiring complex manual tuning.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control system changes force parameters such as magnitude and distribution pattern based on sensor inputs detecting facial features and usage conditions. By automatically optimizing these parameters, the system improves wear reliability and comfort while maintaining a unified control architecture.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12393267B2Fit guidance for head-mountable devices
Publication Date: 2025.08.19 APPLE INC
  • US12393267B2 patent drawing
  • US12393267B2 patent drawing
  • US12393267B2 patent drawing

AI summary

A head-mountable device and/or another electronic device can provide guidance for optimal placement of the head-mountable device. The head-mountable device and/or another electronic device can be operated to guide a user to position the head-mountable device in a manner that will achieve proper alignment of components with respect to the user and maximize user comfort. For example, the head-mountable device and/or another device can include sensors for detecting features of the user's face, forces distributed on the face when worn, and/or alignment with the face (e.g., eyes). By further example, the head-mountable device and/or another device can detect changes in adjustment and infer user discomfort based on the frequency and/or magnitude of such changes. By further example, the head-mountable device and/or another device can detect changes in features of the user's face before, during, and/or after use of the head-mountable device.