Lighting Apparatus Diffusion Shield for Spliced Black Border Elimination
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Solution Overview
Problem
Existing lighting apparatuses suffer from poor lighting uniformity and the formation of black borders when spliced together, leading to inadequate illumination and uneven light mixing.
Innovation Solution
A lighting apparatus design featuring a diffusion shield with a light shading area and a light transmitting area, along with an end cover, which allows partial lateral emission of light to reduce excessive diffusion and eliminate black borders, while maintaining directional illumination and uniformity when multiple units are spliced.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple lighting apparatuses are spliced together to increase brightness and illumination range, then the lighting coverage is improved, but black borders and poor lighting uniformity are generated at the splicing positions
Solution Approach 1:
The diffusion shield is divided into distinct functional zones: a light transmitting area that allows light passage and a light shading area that blocks light. This segmentation enables precise control over light emission directions, allowing lateral light emission to fill gaps between spliced apparatuses while preventing vertical light leakage that creates black borders.
Solution Approach 2:
Different areas of the diffusion shield are assigned different optical properties. The light transmitting area has high transparency to enable lateral light emission, while the light shading area has low transparency to prevent vertical light leakage. This local differentiation of material properties solves the contradiction by making each zone serve its specific function in eliminating black borders.
2Illumination intensity
If multiple lighting apparatuses are spliced together to increase brightness, then the illumination intensity is improved, but lighting uniformity deteriorates due to gradient brightness and shading
Solution Approach 1:
The diffusion shield is segmented into light transmitting and light shading areas with specific height ratios (h1/h2 between 0.5 and 0.75). This segmentation creates controlled light emission zones that work together to produce uniform illumination across the entire spliced array, eliminating gradient brightness variations.
Solution Approach 2:
The patent optimizes the height parameters of the light transmitting and light shading areas, establishing that h1/h2 should be between 0.5 and 0.75. This parameter optimization ensures that the lateral light emission from the light transmitting area and the blocked light from the light shading area combine to produce uniform illumination intensity across all spliced apparatuses.
3Manufacturing precision
If a diffusion shield is used to control light emission direction, then lighting uniformity is improved, but the device complexity increases
Solution Approach 1:
The diffusion shield is segmented into two functional areas (light transmitting and light shading) that can be manufactured as integral parts of a single component. This segmentation achieves complex light control functionality while maintaining simple manufacturing, as the differentiated areas are created through molding or coating rather than assembling separate parts.
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 ensures improved light uniformity and continuity across spliced lighting apparatuses, reducing the occurrence of black borders and enhancing the overall lighting performance by controlling light emission through the use of a diffusion shield and end cover.
Implementation Method 1
a diffusion shield, connected to the housing and spaced apart from the light source module; in which the diffusion shield comprises a first diffusion wall and a second diffusion wall positioned on two sides of the first diffusion wall
Implementation Method 2
the second diffusion wall further includes a light shading area and a light transmitting area both in a light emitting direction X, the light transmitting area connected to the first diffusion wall, the light shading area positioned on a side of the light transmitting area distal to the first diffusion wall
Data Source
AI summary
Disclosed in the present application is a lighting apparatus and a lighting system, including: a housing; a light source module, provided in the housing; a diffusion shield, connected to the housing and spaced apart from the light source module; and an end cover, provided on two ends of the housing and connected to the diffusion shield, in which the diffusion shield comprises a first diffusion wall and a second diffusion wall positioned on two sides of the first diffusion wall, in which the second diffusion wall further includes a light shading area and a light transmitting area both in a light emitting direction X, the light transmitting area connected to the first diffusion wall, the light shading area positioned on a side of the light transmitting area distal to the first diffusion wall, light of the light source module emitting from the first diffusion wall and the light transmitting area.