Lighting Module With Resin-Layer Holes for Wide-Angle Uniformity
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Solution Overview
Problem
Existing lighting technologies using LEDs struggle to provide a wide emission angle and efficient light distribution, limiting design freedom and light uniformity, especially in applications like vehicle lamps.
Innovation Solution
A lighting module design featuring a substrate with light emitting devices, a resin layer with holes, and reflective members that enhance light emission as a line-shaped surface light source, improving luminous intensity and reducing light loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LEDs are used as vehicle lamps, then power consumption is reduced, but emission angle is limited
Solution Approach 1:
The patent transitions from point-source LED illumination to line-source illumination by arranging multiple LEDs in a linear sequence. This dimensional change from zero-dimensional point sources to one-dimensional line sources naturally expands the emission angle and creates a distributed light source that illuminates a broader area while maintaining low power consumption characteristics of individual LEDs
Solution Approach 2:
Multiple LED elements are combined into a single integrated lighting module where individual LED light sources are merged with optical components (lens array, reflector) to function as a unified line source. This merging of multiple point sources into a coordinated system achieves wide emission angle while preserving the energy efficiency of LED technology
2Adaptability or versatility
If LED size is increased to widen emission angle, then design freedom is reduced, but light distribution improves
Solution Approach 1:
The lighting system is segmented into multiple discrete LED elements arranged in a line, each contributing to the overall light distribution. This segmentation allows the system to achieve wide emission angle through the collective effect of multiple small sources rather than requiring a single large source, thereby preserving design flexibility
Solution Approach 2:
Optical intermediary components such as lens arrays and reflectors are introduced between the LED sources and the final light output. These intermediaries shape and distribute the light from multiple small LEDs to achieve wide emission angle, allowing the LEDs themselves to remain small while still providing broad illumination coverage
3Ease of manufacture
If conventional LED arrangement is used, then manufacturing is simple, but light uniformity is poor
Solution Approach 1:
The patent modifies optical parameters of the lighting system by introducing specific optical components (lens array with controlled refractive indices, reflective surfaces with precise angles) that change the light distribution characteristics. These parameter changes transform the output from uneven conventional LED arrangement to uniform line source illumination while maintaining manufacturing feasibility
Solution Approach 2:
Different regions of the lighting module are assigned different optical properties - for example, specific areas may have enhanced reflective surfaces or lens elements with different refractive indices positioned to correct local light distribution issues. This localized optimization ensures uniform light output across the entire line source while keeping the overall manufacturing process straightforward
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 design enhances light efficiency, improves light uniformity, increases design freedom, and increases optical reliability, making it suitable for various lighting applications including vehicle lamps.
Implementation Method 1
a resin layer including 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
the hole passes through the resin layer in a direction of the substrate from a lower surface of the first reflective member, and the hole and the light emitting device may overlap in the light emission direction
Implementation Method 3
a first reflective member disposed on the resin layer... the hole and the light emitting device may overlap in the light emission direction
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.