Lighting Apparatus With Variable Gap For Artificial Sky Depth
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Solution Overview
Problem
Conventional lighting apparatuses struggle to replicate the natural appearance of a blue sky, especially when installed on walls or ceilings, due to uniform color temperature and luminance issues, and often reflect nearby structures, making it difficult to create a sense of infinite depth and openness.
Innovation Solution
A lighting apparatus comprising a light source, a reflector layer, a light diffuser layer, and a scatter panel, where the gaps between these components vary, allowing light to be emitted in a gradient-like manner, mimicking the natural sky's color and luminance changes, and using a wavelength-selective reflector to absorb red light and reflect blue light, creating a more realistic sky effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a planar lighting apparatus with uniform light emission is used, then color uniformity is achieved, but the natural appearance of sky with depth perception cannot be reproduced
Solution Approach 1:
The patent applies local quality by varying the gap distance between the light guide plate and reflector sheet across different regions. Specifically, the gap is smaller in the center region and larger at the edges, creating localized differences in light reflection intensity. This produces a luminance gradient where the center appears brighter and edges appear dimmer, mimicking the natural sky's depth perception while maintaining overall color uniformity through the diffuser plate.
Solution Approach 2:
The patent changes the physical parameter of gap distance between optical components to achieve varying light emission characteristics. By adjusting the gap distance from the light guide plate to the reflector sheet across different spatial locations, the system transforms uniform light input into non-uniform luminance output, creating the desired sky-like appearance with depth perception.
2Measurement precision
If a display device is used to reproduce blue sky, then color accuracy is achieved, but the physical granularity of image elements makes it difficult to create a natural sky appearance
Solution Approach 1:
The patent replaces the mechanical/digital image display system with an optical system using light guides, reflectors, and diffusers. Instead of using discrete image elements or pixels to create the sky appearance, the system uses continuous light distribution through optical components with varying gap distances, eliminating the granularity problem inherent in display devices while maintaining color accuracy.
3Illumination intensity
If a reflector layer is used to enhance light emission, then luminance is improved, but reflections of surrounding structures appear on the reflector surface
Solution Approach 1:
The patent introduces a diffuser plate as an intermediary component between the light guide plate and the reflector sheet. This diffuser plate scatters and softens the reflected light, preventing direct reflections of surrounding structures from appearing on the reflector surface while maintaining the enhanced luminance provided by the reflector. The diffuser acts as a mediator that preserves the beneficial light reflection while eliminating the harmful reflected images.
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 apparatus effectively reproduces an artificial sky with a simple configuration, providing a sense of depth and openness while minimizing installation costs and avoiding recognition of reflected images, thus enhancing the perceived natural lighting environment.
Implementation Method 1
a reflector layer which reflects light
Implementation Method 2
a light diffuser layer which is light transmissive
Implementation Method 3
a scatter panel which is light transmissive and disposed on an anterior surface side of the light diffuser layer to face the light diffuser layer
Data Source
AI summary
A lighting apparatus includes: a white light source; a blue light source; a reflector layer which reflects light; a light diffuser layer which is light transmissive and disposed on an anterior surface side of the reflector layer; and a scatter panel which is light transmissive and disposed on an anterior surface side of the light diffuser layer to face the light diffuser layer. At least a portion of a gap between the scatter panel and the reflector layer and at least a portion of a gap between the scatter panel and the light diffuser layer change from a first end side to a second end side of the lighting apparatus. The white light source and the blue light source are disposed on the first end side of the lighting apparatus to emit light toward the light diffuser layer and the scatter panel.