Mobile Display Waveguide Illumination for Image Capture
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Solution Overview
Problem
Mobile devices often encounter poor lighting environments, leading to suboptimal image and video capture quality due to varying illumination conditions.
Innovation Solution
A method that detects illumination conditions using ambient light and proximity sensors, adjusting the luminance of the display device by emitting light through apertures and waveguides to improve object illumination, allowing for real-time adjustments in intensity, contrast, and color scheme to enhance image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display device emits light through apertures to illuminate the object, then the object illumination is improved, but the device complexity increases due to additional components like waveguides and apertures
Solution Approach 1:
The display device is designed to perform dual functions: displaying visual content and providing object illumination. The same display components (backlight, waveguide, apertures) serve both display and illumination purposes, eliminating the need for separate illumination hardware and reducing overall device complexity despite the multi-functional requirement
Solution Approach 2:
The display device's backlight system serves itself by channeling light through waveguides and apertures to illuminate objects. The illumination function is integrated into the existing display structure, allowing the display components to provide illumination without requiring external or additional dedicated illumination sources
2Reliability
If the luminance of the display device is adjusted in real-time to adapt to lighting conditions, then the image capture quality is improved, but the use of energy increases due to dynamic luminance adjustments
Solution Approach 1:
The display device implements dynamic luminance adjustment by detecting ambient lighting conditions and proximity of objects, then real-time adjusting the backlight intensity and aperture configurations. This dynamic adaptation ensures optimal illumination for image capture while consuming only the necessary energy required for each specific lighting scenario
Solution Approach 2:
The system uses sensors to detect ambient light levels and object proximity, providing feedback that triggers appropriate luminance adjustments. This feedback mechanism ensures the display emits only the required amount of light for effective illumination, avoiding excessive energy consumption while maintaining image capture quality across varying environmental conditions
3Measurement precision
If multiple sensors (ambient light sensor and proximity sensor) are used to detect illumination conditions, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
Both the ambient light sensor and proximity sensor are integrated into the display device's existing sensor array, allowing these components to serve dual purposes: proximity detection for user interaction and illumination assessment for image capture optimization. This multi-functional integration improves measurement precision without significantly increasing device complexity
Solution Approach 2:
The patent combines the functions of ambient light detection and proximity sensing within a unified control system that processes data from both sensors to determine optimal illumination settings. By merging these detection functions into a single control architecture, the system achieves high measurement precision while minimizing the complexity increase that would result from separate processing systems
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
Improves image and video capture quality by dynamically adapting to lighting conditions, ensuring better object illumination and reducing the need for additional lighting sources, thereby enhancing the overall imaging capabilities of mobile devices.
Implementation Method 1
a waveguide diffuses the light from the light source before emitting it from the one or more apertures
Implementation Method 2
detecting incident light information on an ambient light photosensor
Data Source
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AI summary
A method (500) for adjusting object illumination with a mobile device (100) having a display device (118) is described. The method includes detecting (510) illumination of an object and generating illumination data information; and adjusting (520) a luminance of the display device in dependence on the object illumination data to adjust image lighting.