Edge-Lit Lightguide Panels for Glare Reduction
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Solution Overview
Problem
Existing lighting systems using semiconductor light-emitting devices often fail to provide appropriate illumination for defined areas, neglecting the purpose of illumination and being inflexible for various area types, with issues in perceived brightness, color, and beam angle control, and often result in aesthetically unpleasing glare.
Innovation Solution
The lighting system incorporates edge-lit lightguide panels, total internal reflection lenses or bowl reflectors, and multiple visible-light sources with semiconductor light-emitting devices to control light propagation, forming a shielding zone that redirects light emissions and reduces glare by using edge-lit lightguide panels and reflective surfaces to manage light output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple edge-lit lightguide panels with semiconductor light-emitting devices are used to provide comprehensive illumination, then the illumination coverage and adaptability for various area types are improved, but the device complexity and structural configuration become more complex
Solution Approach 1:
The lighting system is divided into multiple independent edge-lit lightguide panels, each with its own semiconductor light-emitting devices. These modular panels can be selectively configured and positioned to illuminate different area types (walls, ceilings, floors), providing versatility without requiring a completely different system for each application.
Solution Approach 2:
The edge-lit lightguide panels are designed with multi-functional capability, serving as both light guides and structural elements. The same panel configuration can be used for wall washing, ceiling illumination, or floor lighting by adjusting the positioning and orientation, reducing the need for specialized components for different applications.
2Object-affected harmful factors
If light propagation is controlled using edge-lit lightguide panels and reflective surfaces to reduce glare, then the visual comfort and aesthetic quality are improved, but the device complexity increases due to additional optical components
Solution Approach 1:
Edge-lit lightguide panels serve as intermediary elements between the semiconductor light-emitting devices and the target surfaces. These panels guide light propagation through total internal reflection and controlled emission, acting as mediators that distribute light evenly while preventing direct line-of-sight to the light sources, thereby reducing glare without requiring additional reflective surfaces or complex optical assemblies.
3Stability of the object's composition
If semiconductor light-emitting devices are positioned along peripheral edges to direct light into lightguide panels, then the light distribution uniformity is improved, but the manufacturing precision requirements increase for accurate positioning
Solution Approach 1:
The semiconductor light-emitting devices are pre-positioned along the peripheral edges of the lightguide panels during the panel manufacturing process. This preliminary positioning ensures that the devices are correctly aligned with the lightguide structure before final assembly, allowing for tolerance accumulation to be managed at the panel level rather than requiring high precision at the system assembly level.
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 configuration provides adaptable, controlled illumination with improved brightness and color consistency, reducing glare and enhancing the effectiveness of light distribution across various areas.
Implementation Method 1
a total internal reflection lens... the total internal reflection side surface is extended along the central light-emission axis
Implementation Method 2
a bowl reflector... the visible-light-reflective side surface is extended along the central light-emission axis
Implementation Method 3
edge-lit lightguide panel... has a peripheral edge being extended along and spaced transversely away from the longitudinal axis
Data Source
AI summary
Lighting system including: two edge-lit lightguide panels; three visible-light sources; and total internal reflection lens or bowl reflector. Each edge-lit lightguide panel is extended along longitudinal axis, has pair of mutually-opposing panel surfaces, and has peripheral edge extended along and spaced transversely away from longitudinal axis. Panel surfaces include first and second light output interfaces. Two visible-light sources located along panel peripheral edges for directing light into panels. Lens or reflector has reflective side surface and central axis transverse to longitudinal axis for directing light to third light output interface located between the others. Output interfaces cooperatively define emission aperture forming shielding zone for redirecting combined light emissions.