Image Display Apparatus Eye Safety Warning System
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Solution Overview
Problem
The increasing luminance of projectors poses a safety risk for users and observers, necessitating a technology that enhances safety while maintaining high luminance levels.
Innovation Solution
An image display apparatus that calculates a reference distance from the emission surface based on light properties, such as illuminance or luminance, and notifies users of the influence of emitted light, using a calculator and notification section to provide real-time warnings through image or audio, with a look-up table for efficient calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If solid-state light sources (LEDs, LDs) are used to increase luminance, then brightness and longevity are improved, but safety hazards to eyes from high luminance exposure worsen
Solution Approach 1:
The system performs preliminary calculation of the reference distance before projection begins, and displays warning information in advance to alert users of potential eye exposure hazards. The calculator computes the reference distance based on light source properties, and the notification section presents this information before the user may be exposed to high luminance
Solution Approach 2:
The notification section acts as an intermediary between the high luminance light source and the user. It mediates the hazard by providing warning information about the reference distance, allowing users to make informed decisions about their exposure to the projected light
2Reliability
If reference distance calculation and notification systems are added, then safety is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex physical safety mechanisms with information-based notification. Instead of adding physical barriers or complex control systems, the invention uses calculation and display of reference distance information to guide safe usage, substituting mechanical complexity with computational and informational elements
Data Source
AI summary
An image display apparatus according to an embodiment of the present technology includes an image display unit, a calculator, and a notification section. The image display unit includes an emission surface and displays an image by emitting light from the emission surface. The calculator calculates a reference distance from the emission surface, the reference distance serving as a determination criteria for an influence of emitted light that is emitted from the image projection section. The notification section notifies about information on the influence of the emitted light on the basis of the calculated reference distance.