LED Lighting Module Resin-Hole Optics for Uniform Line Light
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Solution Overview
Problem
Conventional LED lighting devices have limited light emission angles, making them less effective as vehicle lamps due to their small size, which restricts design freedom and increases light loss, leading to inefficient light distribution and reduced luminous intensity.
Innovation Solution
A lighting module with a substrate, light emitting devices, a resin layer, and reflective members, where the resin layer includes holes that overlap with the light emitting devices to diffuse light, enhancing light emission in a line-shaped surface light source and improving light efficiency and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional LED is used as light source, then power consumption is reduced, but light emission area is limited due to small size and small emission angle
Solution Approach 1:
The patent transitions from point-source LED illumination to a line-shaped surface light source by arranging multiple LEDs in a specific pattern and using optical elements to distribute light across a two-dimensional surface area, thereby increasing the effective light emission area while maintaining low power consumption
Solution Approach 2:
The lighting module divides the light emission function into multiple segments by using several individual LEDs arranged in a matrix pattern, where each LED contributes to a portion of the overall line-shaped light output, collectively achieving a larger emission area than a single LED could provide
2Area of stationary object
If multiple light emitting devices are arranged to increase light emission area, then light distribution is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines multiple LEDs, resin layers, and reflective members into a single integrated lighting module assembly, where components are pre-arranged in specific patterns and manufactured as a unified structure, reducing the complexity of final assembly and installation while maintaining the large light emission area
3Illumination intensity
If light emitting devices are densely arranged, then light uniformity is improved, but light loss increases due to interference and inefficiency
Solution Approach 1:
The patent introduces resin layers and reflective members as intermediary optical elements between the LEDs and the final light output surface. These intermediaries manage light distribution, reduce interference between adjacent LEDs, and redirect otherwise lost light toward the emission surface, thereby improving uniformity while minimizing energy loss
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 increases luminous intensity, reduces manufacturing complexity, enhances light uniformity, and improves optical reliability, allowing for more flexible design and efficient light distribution in line-shaped surface lighting applications.
Implementation Method 1
the resin layer includes a first surface facing emission surfaces of the plurality of light emitting devices, and a hole disposed between the first surface and the plurality of light emitting devices
Implementation Method 2
a first reflective member disposed on the resin layer
Data Source
AI summary
A lighting device disclosed in an embodiment of the invention includes a substrate; a plurality of light emitting devices disposed on the substrate; a resin layer covering the plurality of light emitting devices on the substrate; and a first reflective member disposed on the resin layer, wherein the resin layer includes a first surface facing the plurality of light emitting devices, and a hole disposed between the first surface and the plurality of light emitting devices and the hole penetrates in the direction of the substrate from a lower surface of the first reflective member, and the hole and the light emitting device may overlap in a light emission direction of the light emitting device.