Head-Mounted AR Layout for Balanced Weight and Compact Fit

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Solution Overview

Problem

Compact AR devices face challenges in achieving a balance between functionality and socially acceptable form factor, with larger devices being inconvenient and uncomfortable, while smaller ones lack sufficient functionality.

Innovation Solution

A compact head-mounted AR device is designed with a front and rear portion connected by bands, balancing weight distribution and allowing for collapsible storage, featuring optical displays and flexible straps for adjustable fit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the components of a useful AR system are fitted in a glasses or headset form factor, then the functionality is improved, but the device becomes heavy and large which is inconvenient and uncomfortable

Engineering Contradiction:

ImprovefunctionalityVSAvoiddevice weight

Core Design Contradiction:

Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The AR device is divided into two separate portions: a front portion containing the optical display and sensors that rests on the user's face, and a rear portion containing the heavier electronic components (processor, memory, battery) that rests on the back of the user's head. This segmentation distributes the weight away from the face while maintaining full system functionality.

Inventive Principle:

Principle #1Segmentation

2Volume of moving object

If the AR device is made smaller to be more convenient and socially acceptable, then the form factor is improved, but the functionality and applicative value become too low

Engineering Contradiction:

Improvedevice sizeVSAvoidfunctionality

Core Design Contradiction:

Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The device leverages the third dimension (depth along the head) by extending components along the head-back direction rather than concentrating everything on the face. The rear portion houses electronic components that extend backward from the front portion, utilizing the depth dimension to accommodate necessary functionality while keeping the facial footprint small and socially acceptable.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Ease of operation

If the AR device is made smaller to be more convenient, then the ease of operation is improved, but the device lacks sufficient functionality

Engineering Contradiction:

ImproveconvenienceVSAvoidfunctionality

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

4Ease of operation

If the front and rear portions are connected by bands, then the weight distribution is balanced and comfort is improved, but the device complexity increases

Engineering Contradiction:

ImprovecomfortVSAvoidstructure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The front and rear portions are connected by flexible bands that can be adjusted to fit different head sizes and shapes. These bands provide a simple yet effective connection mechanism that distributes weight balance while allowing for user adjustment, avoiding the need for complex rigid mounting structures.

Inventive Principle:

Principle #30Flexible shells and thin films

Data Source

PatentUS12582902B2Compact head-mounted augmented reality system

Publication Date: 2026.03.24 NIANTIC SPATIAL INC

AI summary

A head-mounted device (HMD) may include a front portion, a rear portion and one or more bands. The front portion may include an optical display configured to output image light to a user's eyes. The rear portion may be arranged with the front portion to balance the HMD in weight. The one or more bands connect the front portion and the rear portion so that the two portions rest on either side of the user's head.