AR Display Light-Zone Mapping for Virtual Object Visibility

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Solution Overview

Problem

Augmented reality (AR) head-mounted displays (HMDs) suffer from light loss through the waveguide, leading to poor quality of experience (QoE) in well-lit environments, with narrow field of view and inability to clearly see virtual objects due to high light intensity.

Innovation Solution

The AR device measures light levels while spatially mapping a room, incorporating light level zones into the spatial map, and uses smart devices like smart bulbs and blinds to adjust lighting conditions to optimize virtual object placement and visibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the field of vision is kept narrow to maintain display brightness, then the brightness of virtual objects is improved, but the field of view becomes limited

Engineering Contradiction:

Improvedisplay brightnessVSAvoidfield of view

Core Design Contradiction:

Illumination intensityVSArea of stationary object

Solution Approach 1:

The system dynamically adjusts virtual object placement based on real-time light level measurements. Virtual objects are relocated from high-light-intensity zones to lower-intensity zones, allowing the display to maintain its narrow FoV configuration while adapting to changing environmental lighting conditions to preserve visibility

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system creates a spatial map with differentiated light level zones, treating different regions of the environment differently. By identifying and categorizing specific areas based on their light intensity characteristics, the system can place virtual objects in optically favorable locations while maintaining the overall display brightness

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If virtual objects are placed in front of high intensity light sources, then the spatial flexibility is improved, but the visibility of virtual objects deteriorates

Engineering Contradiction:

Improvevirtual object placement flexibilityVSAvoidvisibility of virtual objects

Core Design Contradiction:

Adaptability or versatilityVSIllumination intensity

Solution Approach 1:

The system continuously measures light levels in the environment and uses this feedback to automatically adjust virtual object placement. When a virtual object is placed or moves into a high-light-intensity zone, the system detects the degraded visibility and relocates the object to a more suitable zone, maintaining both spatial flexibility and visibility

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system pre-maps the environment into light level zones before virtual objects are placed. By having the spatial map and light level information ready in advance, the system can immediately determine appropriate placement locations for virtual objects, ensuring visibility from the start rather than correcting problems afterward

Inventive Principle:

Principle #10Preliminary action

3Illumination intensity

If light intensity in the environment increases, then the natural lighting quality is improved, but the quality of experience with AR displays deteriorates

Engineering Contradiction:

Improveenvironmental lighting qualityVSAvoidquality of experience

Core Design Contradiction:

Illumination intensityVSReliability

Solution Approach 1:

The system introduces smart lighting devices and window treatments as intermediary elements between the environment and the user. These intermediaries actively modulate the light reaching the user's field of view, allowing the environment to maintain its natural lighting quality while the intermediaries compensate for excessive intensity that would degrade AR display visibility

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12529892B2Systems and methods for improved quality of experience in augmented reality displays using light intensity measurements

Publication Date: 2026.01.20 ADEIA GUIDES INC

AI summary

An AR display compensates for excessive light levels in a location in which the AR display is being used. AR objects are rendered for display on the AR display. Light levels in a location at which an AR object is being rendered for display are monitored. If the light level in the location exceeds the threshold light level, a light source in the location is identified and light emissions from the identified light source are mitigated.