Head-Mounted Display Brightness Warning for Safe Visual Transition
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Solution Overview
Problem
Users of immersive head-mounted displays (HMDs) face difficulties in adapting to changes in surrounding brightness, leading to reduced visibility and potential hazards when removing the HMD, and existing solutions compromise the sense of immersion.
Innovation Solution
The HMD is equipped with a surrounding light sensor, processor, and notification device to compare ambient brightness with a threshold, providing warnings and adjusting display settings or external lighting to assist users in transitioning to the surrounding environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the luminance of the HMD screen is adjusted in real time according to surrounding brightness, then user visibility in the surrounding environment is improved, but the sense of immersion is impaired
Solution Approach 1:
The system performs preliminary detection of surrounding brightness and user preparation actions before the user actually removes the HMD. By detecting when the user is preparing to remove the HMD (through sensor inputs, gaze detection, or removal motion detection), the system proactively provides warnings and adjusts settings in advance, allowing the user to mentally prepare for the brightness transition without constantly adjusting the HMD screen luminance during use.
Solution Approach 2:
The notification device acts as an intermediary between the HMD display system and the surrounding environment. Instead of directly adjusting the HMD screen luminance to match surrounding brightness (which would break immersion), the notification device provides indirect assistance through warnings and guidance messages that help the user prepare for the brightness transition, maintaining immersion while still supporting user safety.
2Adaptability or versatility
If the HMD screen luminance is kept high to maintain immersion, then user experience is improved, but visibility in the surrounding environment upon removal is reduced
Solution Approach 1:
The system continuously monitors surrounding brightness levels and user behavior through various sensors (light sensors, motion sensors, gaze detection). Based on this feedback, the system determines when the user is preparing to remove the HMD and provides appropriate warnings. This feedback mechanism allows the HMD to maintain high screen luminance during use for immersion while automatically providing visibility assistance when needed.
Solution Approach 2:
The HMD system automatically detects surrounding brightness conditions and user preparation actions, then self-adjusts by providing notifications and warnings without requiring manual user input. The system serves itself by using its own sensors and processing capabilities to monitor the situation and provide appropriate assistance, eliminating the need for the user to manually adjust settings or activate warning features.
3Adaptability or versatility
If no notification is provided to warn users of low surrounding brightness, then the sense of immersion is maintained, but user safety is compromised
Solution Approach 1:
The system applies preliminary anti-action by providing warnings and notifications before the user actually encounters the brightness transition problem. When the system detects that surrounding brightness is low and the user is preparing to remove the HMD, it proactively issues warnings to counteract the potential harmful effect of sudden brightness change, allowing the user to prepare mentally and physically for the transition.
Solution Approach 2:
The notification device serves as an intermediary that bridges the gap between maintaining immersion and ensuring safety. Instead of directly compromising immersion by continuously adjusting HMD screen luminance, the notification device provides indirect safety assistance through warnings and guidance messages, maintaining immersion while still protecting user safety through information provision.
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 reduces user inconvenience by minimizing visibility differences between the HMD screen and external light, maintaining immersion while ensuring safe transitions.
Implementation Method 1
a surrounding light sensor for detecting a brightness in a surrounding environment
Data Source
AI summary
A head-mounted display compares a brightness in a surrounding environment based on a result of measurement by a surrounding light sensor with a surrounding light threshold predetermined for providing a user with a warning, and when the brightness in the surrounding environment is equal to or less than the surrounding light threshold and also when detecting that the user wearing the head-mounted display has performed a surrounding-environment-recognition-preparation-action for switching an action of viewing the display to an action of viewing the surrounding environment, executes control of outputting notification information for letting the user know that a visibility in the surrounding environment reduces, or executes control of outputting a control signal for a lighting fixture.