Curved Optical Layer Lighting Device for Thin Flexible Linear Light
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LED lighting devices using light guide plates are limited in reducing overall thickness, are not flexible, and have high manufacturing costs due to the need for large circuit boards and resin layers, which complicates product design and application in various lighting scenarios.
Innovation Solution
A lighting device design that omits the resin layer and positions the circuit board outside the conversion unit, utilizing a curved optical layer with a reflective layer to convert point light sources into linear light, maintaining a desired length and intensity of the light image while reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light guide plate is used to achieve surface light emission, then the lighting function is improved, but the overall thickness cannot be reduced and the structure becomes rigid and inflexible
Solution Approach 1:
The patent removes the light guide plate from the structure and extracts only the essential light emission function, implementing it directly through LEDs mounted on a circuit board. This eliminates the thick light guide plate component while maintaining the lighting function, thereby reducing overall thickness.
Solution Approach 2:
The patent adopts a thin circuit board structure instead of a rigid light guide plate, enabling the lighting device to be more flexible and adaptable to different housing shapes and bending applications.
2Length of moving object
If a resin layer is added to thin the lighting device, then the thickness is reduced, but the lighting image deteriorates due to surface imperfections and foreign substances
Solution Approach 1:
The patent removes the resin layer entirely from the structure, eliminating the source of surface imperfections and foreign substance problems while maintaining thickness reduction through the direct LED-to-air emission path.
3Stability of the object's composition
If a large-sized circuit board is used to support the resin layer, then the structural integrity is maintained, but manufacturing costs increase
Solution Approach 1:
The patent uses a smaller, more cost-effective circuit board design that only supports the necessary LED components, eliminating the need for large-area boards required to support resin layers, thereby reducing manufacturing costs.
4Illumination intensity
If a light guide plate is used, then surface light emission is achieved, but product design and modification become difficult
Solution Approach 1:
By removing the light guide plate and implementing direct LED emission, the patent simplifies the overall structure, making product design and modification more flexible and easier to adapt to different applications.
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 allows for a thinner, more flexible lighting device with improved stereoscopic effects and reduced manufacturing costs by optimizing the optical layer curvature and light emission angle, enabling efficient linear light conversion without the need for a resin layer.
Implementation Method 1
a conversion unit including an optical layer having a plurality of optical patterns; a light emitting element configured to emit light toward the optical patterns
Implementation Method 2
utilizing a curved optical layer with a reflective layer to convert point light sources into linear light
Data Source
AI summary
An embodiment provides a lighting device comprising: a conversion unit including an optical layer having a plurality of optical patterns; a light emitting element for emitting light toward the optical patterns; and a circuit board on which the light emitting element is disposed, wherein the plurality of optical patterns are spaced apart from each other in a first direction and extend in a second direction intersecting the first direction, and the optical layer has a curvature in the first direction.