Transparent Display Color Filtering for Ambient Light Matching
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Solution Overview
Problem
Transparent displays face challenges in accurately controlling the color gamut and chromaticities of overlaid content due to the dynamic and unpredictable nature of ambient light, leading to computational inefficiencies and reduced color gamut when adjusting display light to match ambient light.
Innovation Solution
Implementing a configurable color filter in the optical stack of a transparent display to adjust ambient light to conform to the display light, rather than adjusting the display light to match the ambient light, thereby reducing computational load and maintaining a consistent, vibrant color gamut across varying environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If display light is adjusted to match ambient light characteristics, then color accuracy is improved, but computational complexity and processing time increase significantly
Solution Approach 1:
Instead of adjusting the display light to match the ambient light (conventional approach), the patent inverts the approach by adjusting the ambient light to match the display light characteristics. This is achieved through a configurable color filter that transforms the ambient light's spectral power distribution to resemble the display panel's spectral power distribution, thereby reducing computational complexity while maintaining color accuracy.
Solution Approach 2:
The patent changes the spectral power distribution parameter of the ambient light using a configurable color filter. By dynamically adjusting the filter's characteristics, the system transforms the ambient light's spectral parameters to match the display panel's spectral power distribution, enabling color accuracy without complex real-time calculations.
2Stability of the object's composition
If display light is adjusted to match ambient light, then color consistency is improved, but the color gamut is reduced
Solution Approach 1:
The patent inverts the conventional approach by not adjusting display light to match ambient light, but rather adjusting ambient light to match display light. This preserves the display panel's native color gamut while achieving color consistency through the configurable color filter that transforms ambient light characteristics.
3Productivity
If ambient light is filtered to match display light, then computational resources are reduced, but device complexity increases
Solution Approach 1:
The patent introduces a configurable color filter as an intermediary component in the optical stack. This filter acts as a mediator that transforms the ambient light's spectral power distribution to match the display panel's characteristics, reducing computational requirements while managing device complexity through a dedicated optical component.
4Measurement precision
If display content is dynamically adapted to ambient light, then color accuracy is improved, but processing time increases
Solution Approach 1:
The patent inverts the dynamic adaptation approach by having the ambient light adapt to the display content rather than the display content adapting to ambient light. The configurable color filter continuously transforms ambient light characteristics to match the display panel's fixed spectral power distribution, eliminating the need for complex real-time color calculations and reducing processing time.
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
This approach eliminates the need for significant computational resources to adjust display light, allows for a wider color gamut determined by the display panel design, and ensures accurate and efficient color presentation regardless of ambient light conditions.
Implementation Method 1
The optical stack may include a configurable color filter that filters the portion of the ambient light to change the first spectral power distribution based on the second spectral power distribution
Data Source
AI summary
Systems and methods for ambient light management for a transparent display are described herein. For example, an illustrative display system may comprise an ambient light sensor configured to detect a first spectral power distribution associated with ambient light. The display system may further comprise a transparent display including a display panel and an optical stack. The display panel may be associated with a second spectral power distribution and may be configured to generate display light. The optical stack may be configured to present the display light while allowing passthrough of a portion of the ambient light. The optical stack may include a configurable color filter that filters the portion of the ambient light to change the first spectral power distribution based on the second spectral power distribution. Corresponding devices and processes are also disclosed.