HMD Face Member Segmentation for Light Blocking

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Solution Overview

Problem

Current head-mounted display devices cause discomfort due to a single-piece face member or gasket design, leading to poor user experience under long-term wear, as they fail to effectively block external ambient light and adjust to the user's face shape.

Innovation Solution

A head-mounted display device featuring a front piece and an annular piece with compression and rotating portions that conform to the user's face, allowing for external light blocking and improved comfort through adjustable fitting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single-piece face member or gasket is used, then the device structure is simple, but the user comfort and light blocking performance deteriorate under long-term wear

Engineering Contradiction:
Improveface member structureVSAvoiduser comfort
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The face member is divided into multiple independent segments: a first face member and a second face member that can relatively move against each other. This segmentation allows each segment to independently adapt to the user's face contours, improving comfort and light blocking performance while maintaining reasonable structural complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The face member transitions from a static single-piece structure to a dynamic multi-segment structure that can move and adjust. The first and second face members can relatively move to conform to different face shapes, providing adaptability and comfort during long-term wear.

Inventive Principle:
Principle #15Dynamics

2Ease of manufacture

If a single-piece face member is used, then the manufacturing process is simple, but the light blocking effectiveness deteriorates

Engineering Contradiction:
Improvemanufacturing processVSAvoidambient light intrusion
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The face member is segmented into multiple sections that can independently position themselves against the user's face. This segmentation creates multiple light-blocking interfaces that collectively prevent ambient light from entering the display device more effectively than a single-piece structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different segments of the face member can be optimized for specific local functions. The first and second face members can be designed with different material properties or geometric features to enhance light blocking in specific areas while maintaining ease of manufacture.

Inventive Principle:
Principle #3Local quality

3Device complexity

If a single-piece face member is used, then the device structure is simple, but the adaptability to different user faces deteriorates

Engineering Contradiction:
Improveface member structureVSAvoidface shape adaptation
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The face member is divided into multiple movable segments that can independently adjust to different face shapes and contours. This segmentation provides superior adaptability compared to a single-piece structure, allowing the device to fit various user faces effectively.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The face member becomes a dynamic structure with movable segments that can adapt to different user faces. The first and second face members can move relative to each other to conform to various facial geometries, enhancing versatility without significantly increasing structural complexity.

Inventive Principle:
Principle #15Dynamics

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 device effectively blocks ambient light and provides a more comfortable wearing experience by compressing and rotating to fit the user's eyes, enhancing immersion and usability.

Implementation Method 1

the head-mounted display device is compressed toward the front piece by an external force applied by the user's face

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 2

the pair of rotating portions are rotated relative to the pair of compression portions by the pair of compression portions being compressed

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS11048093B2Head-mounted display device
Publication Date: 2021.06.29 HTC CORP
  • US11048093B2 patent drawing
  • US11048093B2 patent drawing
  • US11048093B2 patent drawing

AI summary

A head-mounted display device includes a front piece and an annular piece. The front piece is adapted for placing a display device. The annular piece includes a pair of compression portions and a pair of rotating portions. The pair of rotating portions are respectively located at two opposite ends of each of the pair of compression portions. The annular piece is connected to the front piece via the pair of compression portions. When the pair of compression portions are compressed toward the front piece, the pair of rotating portions are adapted to be rotated relative to the pair of compression portions by the pair of compression portions being compressed, and rotation directions of the pair of rotating portions are opposite to each other.