Vehicle Optical Device With Reflective Cavity For OLED Luminance
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Solution Overview
Problem
Current motor vehicle optical devices using organic light-emitting diodes (OLEDs) face design constraints due to the need for flat surfaces and insufficient luminance for signaling functions, as well as issues with glare and orientation limitations.
Innovation Solution
An optical device incorporating a high-directivity OLED with a reflective optical system that deflects and spreads light rays, allowing for flexible positioning and increased luminance, while minimizing glare and accommodating various design requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organic light-emitting diodes are used with protective glass slides, then the light source is protected from water and oxygen, but the possible shapes are severely limited to flat surfaces
Solution Approach 1:
The patent replaces rigid glass slides with a flexible reflective optical system consisting of a reflective layer deposited on a flexible substrate. This allows the light-emitting surface to adopt curved and uneven shapes while maintaining protection and optical functionality, directly resolving the shape limitation imposed by traditional glass slides
2Shape
If organic light-emitting diodes are deposited on flexible substrates to achieve curved surfaces, then design flexibility is improved, but the luminance performance becomes very low
Solution Approach 1:
The patent introduces a reflective optical system with a reflective layer and substrate that creates a cavity structure behind the light-emitting surface. This adds a dimensional element (the cavity space) that enables optical resonance and light trapping effects, significantly enhancing luminance output while maintaining flexible substrate geometry
Solution Approach 2:
The patent employs a composite structure combining the organic light-emitting diode layer with a reflective optical system consisting of a reflective layer on a flexible substrate. This composite architecture synergistically combines the flexibility of the substrate with the optical enhancement of the reflective cavity, achieving both curved surface capability and high luminance
3Adaptability or versatility
If a reflective optical system is added to deflect light rays, then orientation constraints are overcome and light distribution is improved, but device complexity increases
Solution Approach 1:
The patent merges the reflective optical system directly with the light source assembly, where the reflective layer is deposited on the flexible substrate that forms part of the device structure. This integration combines multiple functions (light reflection, structural support, and shape definition) into a single unified component, reducing overall device complexity while maintaining positioning flexibility
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 solution enables a compact, high-luminance optical device that can perform multiple functions like signaling and road lighting without orientation constraints, with reduced glare and improved light distribution.
Implementation Method 1
a reflecting optical system deflecting the light rays emitted by the first surface light source
Data Source
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AI summary
The invention relates to an optical device (1) for a motor vehicle, including a first surface light source (2) emitting light rays (7), characterized in that said device includes a reflective optical system (4) diverting the light rays emitted by the first surface light source.