xR Headset Pupil State Display Control
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Solution Overview
Problem
Conventional Ambient Light Sensor (ALS)-based techniques are ineffective in adjusting display brightness in virtual, augmented, and mixed reality (xR) applications, particularly when dealing with single light sources, varying light angles, reflective objects, and individual user sensitivity to light.
Innovation Solution
An xR headset with an inward-facing camera and an ALS that identifies the user's pupil state to dynamically adjust display settings such as brightness, image size, position, and color scheme based on pupil size and ambient light conditions, ensuring a personalized and comfortable user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If ALS-based techniques are used to adjust display brightness, then automatic brightness correction is achieved, but the technique becomes ineffective in complex lighting conditions such as single light sources, varying light angles, and reflective objects
Solution Approach 1:
The patent introduces the user's pupil state as an intermediary indicator to infer ambient light conditions. Instead of directly measuring ambient light with ALS in complex conditions, the system uses the camera to capture the user's eye image and analyzes pupil size, which naturally responds to ambient light levels. This intermediary measurement approach resolves the contradiction by providing reliable brightness control data even when direct ALS measurement fails in complex lighting scenarios.
2Extent of automation
If ALS-based brightness correction is implemented, then display brightness can be automatically adjusted, but individual user sensitivity to light cannot be accommodated
Solution Approach 1:
The patent implements a feedback mechanism by continuously monitoring the user's pupil state through camera-based eye tracking. The system measures pupil size changes in response to display brightness and uses this feedback to iteratively adjust the display settings. This closed-loop feedback enables automatic adaptation to individual user light sensitivity without requiring manual input, as each user's pupil response naturally reflects their personal comfort threshold.
Solution Approach 2:
The system enables self-service by allowing the user's own physiological response (pupil size变化) to serve as the control signal for display adjustment. The user's eyes essentially 'vote' for the optimal brightness level, and the system automatically adjusts accordingly without requiring the user to manually configure personal preferences or sensitivity settings.
3Adaptability or versatility
If camera-based pupil state identification is implemented, then individualized display control is achieved, but device complexity increases
Solution Approach 1:
The patent leverages the existing camera component in the xR headset, which is already present for other functions such as gaze tracking or user identification. By repurposing this existing camera for pupil state analysis, the system achieves individualized display control without adding dedicated hardware. The same imaging sensor and processing pipeline serve multiple purposes, thereby minimizing the increase in device complexity while enabling sophisticated adaptive functionality.
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 solution provides a natural and individualized user experience by dynamically adjusting display settings based on pupil size and ambient light, enhancing user comfort and immersion in xR environments.
Implementation Method 1
identify, via the camera, a pupil state of a user wearing the xR headset
Data Source
AI summary
Systems and methods for display control based on pupil size in virtual, augmented, and mixed reality (xR) applications. In some embodiments, a method may include: identifying, via a camera mounted to a body a headset facing an eye of a user wearing the headset, a pupil state of the user; communicating an indication of the pupil state to an Information Handling System (IHS) coupled to the headset, wherein the IHS is configured to select a setting based upon the pupil state and transmit an indication of the setting to the headset; and applying the setting, via a controller of the headset, to at least one of: (a) a display mounted on the body of the headset, or (b) an image shown to the user via the display.