Room Lamp with Segmented Light-Scattering Plate for Directed Illuminance
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Solution Overview
Problem
Existing room lights struggle to achieve high directed illuminance while also providing visually appealing radiation outside of the directed range.
Innovation Solution
A room light design featuring LEDs with a diffusely light-scattering plate-shaped body, where the openings on the emission side widen towards the LEDs, allowing primary radiation to be emitted unhindered while a portion of the radiation is scattered as secondary radiation, which is emitted diffusely and homogeneously on all sides, with the light-scattering body being transparent or translucent and aligned to maintain primary radiation intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a diffusely light-scattering plate-shaped body is used to provide visually appealing radiation, then the visual appeal and uniform illumination are improved, but the directed illuminance and radiation intensity in the main direction are reduced
Solution Approach 1:
The plate-shaped body is segmented into multiple openings arranged in a grid pattern, allowing different regions to serve different functions: some openings allow direct light transmission for high directed illuminance, while others interact with the light-scattering material for visual appeal
Solution Approach 2:
The light-scattering material is applied selectively in specific regions around the openings rather than uniformly across the entire plate, allowing local areas to scatter light for visual appeal while maintaining clear transmission paths in other areas for directed illuminance
2Illumination intensity
If the plate-shaped body is made translucent to allow light transmission, then the directed radiation is maintained, but the diffused secondary radiation is reduced
Solution Approach 1:
The plate-shaped body exhibits local quality variation: regions around the openings contain light-scattering material for diffused radiation, while the opening regions themselves remain transparent for direct light transmission
Solution Approach 2:
The light-scattering material acts as an intermediary that converts a portion of the direct light into diffused secondary radiation, while allowing the primary directed radiation to pass through the openings unhindered
3Illumination intensity
If openings are provided to maintain primary radiation intensity, then the directed illuminance is improved, but the diffused secondary radiation is reduced
Solution Approach 1:
The plate is segmented into multiple openings arranged in a grid pattern, with the density and size of openings optimized to balance direct light transmission for illuminance while leaving sufficient material between openings for diffused secondary radiation
Solution Approach 2:
Light-scattering material is applied locally around the openings rather than uniformly, creating a gradient where direct transmission is maximized at the opening centers while diffused radiation is enhanced in the surrounding regions
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 achieves high directed illuminance with a significant portion of the radiation focused in the main direction while providing a visually appealing diffused secondary radiation, with the secondary radiation's illumination power being 10-40% of the primary, enhancing the overall lighting effect.
Implementation Method 1
a diffusely light-scattering plate-shaped body provided on the emission side of the lighting sources, the diffusely light-scattering plate-shaped body having a plurality of openings
Implementation Method 2
the openings which widen towards the emission side of the lighting sources, through which the lighting sources, forming a primary radiation, emit essentially unhindered
Data Source
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AI summary
The lamp has multiple of light sources (4). The diffuser (8) has multiple openings (18) which extend radiation face, by which the lighting sources form a primary radiation, from which the material of the diffuser radiates freely. The light from the lighting source is not radiated through the extending opening as primary radiation, in which diffuser is fed. The light is radiated as diffused scattered secondary radiation.