Lamp Optical Layer Layout for Uniform LED Light and 3D Images
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Solution Overview
Problem
Conventional light emitting diode (LED) lamps for vehicles face issues with limited light distribution due to small exit angles, heat-induced performance degradation, and the inability to create diverse stereoscopic images, limiting their application in providing uniform and varied lighting.
Innovation Solution
A lighting device comprising a substrate with a light source portion, a resin layer, a light blocking layer, and an optical layer, where the resin layer includes grooves and strategically arranged openings to guide and distribute light uniformly, allowing for the creation of stereoscopic images with varying shapes and intensities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional light emitting diodes are used as light sources, then the lighting device has low power consumption and long lifespan, but the light emitting area is limited and the exit angle of emitted light is small
Solution Approach 1:
The patent divides the light source into multiple individual light emitting diodes arranged in an array, where each LED emits light through a corresponding opening in the light blocking layer. This segmentation allows the system to maintain the energy efficiency of individual LEDs while achieving a larger overall light emitting area through the collective arrangement of multiple LEDs.
Solution Approach 2:
The patent transitions from point light sources to a surface light source configuration by arranging multiple LEDs in a two-dimensional array and using a light blocking layer with corresponding openings. This dimensional change from one-point emission to multi-point surface emission increases the effective light emitting area while maintaining the directional control of individual LEDs.
2Device complexity
If conventional light emitting diodes are used, then the lighting device is simple in structure, but the uniformity of emitted light is reduced and hot spots are formed
Solution Approach 1:
The patent introduces a light blocking layer as an intermediary component between the light sources and the external environment. This layer with precisely positioned openings controls and uniformizes the light emission from multiple LEDs, preventing hot spots and ensuring uniform light distribution across the light emitting surface.
Solution Approach 2:
The light blocking layer provides different local qualities by having openings at specific positions corresponding to individual LEDs and blocking areas between them. This local differentiation allows each LED to emit light uniformly through its designated opening while preventing light from adjacent LEDs, thereby achieving overall uniformity.
3Device complexity
If conventional light emitting diodes are used, then the lighting device has simple configuration, but the light source is visually recognized from the outside and characteristics are deteriorated
Solution Approach 1:
The patent extracts the light emitting function from the visible LED components by placing the actual light sources behind a light blocking layer with openings. The openings are positioned and sized to allow light emission while concealing the LED components from external view, thus removing the harmful visual recognition of the light source structure.
4Adaptability or versatility
If multiple light emitting diodes are used to implement stereoscopic images, then various images can be expressed, but the number of light emitting diodes increases and diversity of images is limited
Solution Approach 1:
The patent makes each light emitting diode multi-functional by enabling it to contribute to multiple stereoscopic images simultaneously. Through the light blocking layer with strategically positioned openings and the optical layer, each LED can participate in forming different image patterns, reducing the total number of LEDs needed while maintaining image diversity.
Solution Approach 2:
The patent merges the functions of multiple LEDs to create stereoscopic images, where light from multiple individual LEDs is combined and directed through the optical layer to form coherent three-dimensional image patterns. This merging allows a smaller number of LEDs to produce diverse images through coordinated light emission.
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 provides a uniform point light source and stereoscopic images with improved light distribution and reduced heat-related performance issues, enabling flexible application in various lighting scenarios, including vehicle lamps.
Implementation Method 1
a resin layer disposed on the substrate and covering the light source portion, wherein the resin layer includes a groove disposed between the first and second regions
Implementation Method 2
a light blocking layer disposed on the resin layer and having an opening portion
Implementation Method 3
an optical layer disposed on the light blocking layer
Data Source
AI summary
The lighting device disclosed in the embodiment includes a substrate, a light source portion disposed on the substrate, a resin layer disposed on the substrate and covering the light source portion, a light blocking layer disposed on the resin layer and having an opening portion, and an optical layer disposed on the light blocking layer, wherein the light source portion includes a plurality of first light sources disposed in a first region of the resin layer and a plurality of second light sources disposed in a second area of the resin layer, wherein the resin layer includes a groove disposed between the first and second regions.