Variable Optical Material for Ambient Light Control in AR Displays
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Solution Overview
Problem
Challenges exist in producing augmented reality technologies that provide a comfortable, natural-feeling, rich presentation of virtual image elements amidst real-world imagery, due to the complexity of the human visual perception system.
Innovation Solution
A user-wearable display device with a variable optical material that undergoes physical and/or chemical changes in response to stimuli, adjusting ambient light intensity, spectral content, or direction through sensors and processing electronics to enhance virtual image presentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If variable optical material is used to dynamically adjust light transmission, then light transmission characteristics are improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by utilizing variable optical materials that can dynamically alter their optical properties (such as refractive index, absorption coefficient, or transmission characteristics) in response to environmental conditions or control signals. This allows the system to adjust light transmission characteristics without adding complex mechanical or electronic components, resolving the contradiction between improving illumination control and maintaining device simplicity.
2Manufacturing precision
If ambient light is manipulated to enhance virtual image presentation, then image quality is improved, but visual perception complexity increases
Solution Approach 1:
The patent employs self-service principles by designing the optical system to automatically adapt to ambient lighting conditions without requiring complex user adjustments or sophisticated perception algorithms. The variable optical material responds autonomously to environmental light levels, automatically optimizing virtual image presentation while minimizing the cognitive and perceptual burden on the user.
3Ease of operation
If light transmission is dynamically altered to reduce glare, then visual comfort is improved, but system responsiveness requirements increase
Solution Approach 1:
The patent implements periodic action by using variable optical materials that can rapidly and reversibly switch between different transmission states in response to periodic or transient lighting conditions. This allows the system to maintain visual comfort during varying ambient light conditions (such as passing clouds or alternating indoor/outdoor environments) while maintaining manageable response time requirements through the inherent responsiveness of the optical material.
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 device improves the user experience by dynamically altering light transmission characteristics to better integrate virtual and real-world imagery, reducing glare and enhancing immersion in augmented reality environments.
Implementation Method 1
a variable optical material that undergoes a physical and/or a chemical change in response to a stimulus
Implementation Method 2
a variable optical material that undergoes a physical and/or a chemical change in response to a stimulus
Data Source
AI summary
An optical device includes variable optical material that alters at least one of: incident ambient light, spectral content of incident ambient light or direction of incident ambient light through the optical device in response to a stimulus provided by the device. The device can sense intensity and/or spectral characteristics of ambient light and provide appropriate stimulus to various portions of the optical device to activate the variable optical material and alter at least one of: incident ambient light, spectral content of incident ambient light or direction of incident ambient light.