Flexible Lighting Structure With 3D Optical Pattern and Reduced Thickness
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Solution Overview
Problem
Conventional lighting devices using light guide plates are limited in thickness and flexibility, making it difficult to design products with curved surfaces and limiting design freedom, and they lack a geometric optical pattern.
Innovation Solution
A lighting device structure that removes the light guide plate and uses a flexible PCB and resin layer with a protrusion optical pattern, incorporating a reflection member and optical members to enhance flexibility and design freedom, while providing a geometric optical pattern and efficient light reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light guide plate is used to achieve plane light emitting function, then light distribution is improved, but the thickness of the lighting device increases
Solution Approach 1:
The patent extracts and removes the light guide plate from the lighting device structure, replacing it with a reflection member that has a reflection pattern formed directly on its surface. This eliminates the need for the separate light guide plate component while maintaining light distribution functionality through the reflection pattern.
Solution Approach 2:
The patent merges the functions of the light guide plate and reflection member into a single integrated reflection member structure. The reflection pattern is formed directly on the reflection member surface, combining light reflection and distribution functions in one component, thereby reducing overall device thickness.
2Ease of operation
If a light guide plate is used to guide light, then light guiding function is achieved, but the product design freedom is limited due to rigidity
Solution Approach 1:
The patent replaces the rigid light guide plate with a flexible reflection member that can be bent and conform to curved surfaces. The reflection member with its surface reflection pattern maintains light guiding functionality while providing the flexibility needed for diverse product designs and curved housing applications.
3Illumination intensity
If a light guide plate is used in the lighting device, then plane light emission is achieved, but the overall thickness cannot be reduced
Solution Approach 1:
The patent removes the light guide plate from the device structure and replaces it with a thin reflection member that has a reflection pattern on its surface. This extraction eliminates the thickness contribution of the light guide plate while maintaining light distribution capabilities through the reflection pattern.
Solution Approach 2:
The patent changes the optical parameters by forming a reflection pattern directly on the reflection member surface instead of using a separate light guide plate. This parameter change in the optical structure allows for thinner overall device thickness while achieving the desired plane light emission effect.
4Ease of operation
If a light guide plate is used, then light distribution is provided, but material flexibility is lost
Solution Approach 1:
The patent replaces the rigid light guide plate material with a flexible reflection member material. The reflection member can be made from flexible materials that allow bending and conforming to various shapes, while the reflection pattern on its surface maintains the light distribution function.
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 lighting device with enhanced design freedom, improved light efficiency, and a 3D light effect, reducing light loss and ensuring uniform light distribution.
Implementation Method 1
The LED (Light Emitting Diode) device is directed to converting an electric signal into infrared ray or light using the natures of a compound semiconductor
Implementation Method 2
provides a reflection member and a reflection pattern which define a structure configured to efficiently reflect the light emitted from the light emitting units, thereby maximizing luminance along with the enhanced reflectivity of light
Implementation Method 3
an optical member with a protrusion optical pattern formed between a resin layer and a reflection member is provided, so an effect that the shape and a 3D feeling of light change depending on a viewing angle
Implementation Method 4
an optical member comprising a protrusion optical pattern forming a gap with an adjacent layer
Data Source
Figure 1~2
Figure 3~4
Figure 5(a)~5(c)
AI summary
Disclosed is a lighting device which comprises: an optical member comprising a protruding optical pattern forming a gap with an adjacent layer; at least one light emitting unit inserted into the optical member; and a resin layer formed on the optical member and the at least one light emitting unit, whereby it is possible to obtain an effect that the shapes of light change depending on the viewing angle when viewing the light source by producing various protruding optical patterns, an effect that the whole thickness can be reduced, and an effect that the degree of design freedom can be enhanced when designing products thanks to an enhanced flexibility.