Transparent OLED Panels for Independent Direct Indirect Light Control
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Solution Overview
Problem
Conventional lighting devices cannot independently control the relative brightness of direct and indirect light, limiting flexibility in lighting applications.
Innovation Solution
The use of transparent organic light-emitting device (TOLED) light panels, where at least two panels are stacked or positioned to allow independent control of the ratio of direct to indirect light emission, with each panel emitting light unequally to achieve a desired balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single light source is used to provide both direct and indirect light, then the lighting device structure is simple, but the relative brightness of direct and indirect light cannot be independently controlled
Solution Approach 1:
The patent divides the lighting device into multiple separate light sources, with each light source dedicated to producing either direct or indirect light. This segmentation enables independent control of direct and indirect light brightness while maintaining reasonable device complexity through modular design.
2Adaptability or versatility
If multiple light sources are used to enable independent control of direct and indirect light, then lighting flexibility is improved, but the device complexity increases
Solution Approach 1:
The patent designs light sources that can serve multiple functions - each light source is positioned and configured to contribute to both direct illumination and indirect reflected illumination. This multi-functionality approach enables lighting flexibility without requiring separate dedicated light sources for each function, thereby controlling device complexity.
3Illumination intensity
If light sources emit at full capacity, then maximum illumination is achieved, but fixture lifetime is reduced
Solution Approach 1:
The patent utilizes multiple light sources where each source operates at reduced capacity (partial action) rather than full capacity. By distributing the total illumination requirement across multiple sources operating at lower intensities, the system achieves maximum overall illumination while extending the operational lifetime of each individual light source and the fixture as a whole.
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
Enables flexible control over the ratio of direct to indirect light, extending fixture lifetime and reducing glare by allowing each panel to emit only a percentage of the overall light, thereby improving lighting design and user experience.
Implementation Method 1
OLEDs make use of thin organic films that emit light when voltage is applied across the device
Data Source
AI summary
A lighting device for emitting direct light and indirect light, includes a first transparent light panel comprising at least one organic light emitting device, the first transparent light panel emitting direct light and indirect light during operation thereof; and at least a second transparent light panel comprising at least one organic light emitting device, the second transparent light panel emitting direct light and indirect light during operation thereof, the second transparent light panel being positioned so that at least a portion of indirect light emitted from the first transparent light is transmitted through the second transparent light panel and at least a portion of direct light emitted from the second transparent light panel is transmitted through the first transparent light panel, wherein the first transparent light panel is controllable independently from the second transparent light panel to control a ratio of direct light to indirect light emitted by the lighting device. Other aspects are described and claimed.