Slim Troffer Light Fixture with Flat Lenses for Uniform Illumination
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Solution Overview
Problem
Troffer light fixtures are too bulky and fail to provide uniform and adequate illumination.
Innovation Solution
A slim troffer light fixture design featuring a housing with a cover, multiple LED light sources, and optics arranged in rows, along with reflective paper and strategically positioned flat lenses to minimize light mixing and enhance uniformity, achieving a depth of less than three inches and reduced glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If traditional troffer light fixture design is used, then adequate illumination can be provided, but the fixture becomes too bulky
Solution Approach 1:
The fixture is divided into separate functional zones: LED light sources are positioned in specific areas with optics directed toward the ceiling, while reflective paper is placed on the housing sides to redirect light. This segmentation allows compact arrangement while maintaining illumination effectiveness.
Solution Approach 2:
Light distribution is achieved by directing light upward toward the ceiling rather than directly downward, utilizing the ceiling as a secondary light source. This dimensional approach allows for a thinner fixture profile while maintaining adequate illumination uniformity across the workspace.
2Illumination intensity
If multiple light sources are used to improve illumination uniformity, then light mixing occurs inside the housing causing glare
Solution Approach 1:
The optics are extracted and positioned separately from the light sources, mounted on the housing rather than attached directly to the LEDs. This separation allows for better light control and prevents excessive light mixing that would cause glare, while still achieving uniform illumination distribution.
Solution Approach 2:
Reflective paper is introduced as an intermediary element on the housing sides to redirect light in a controlled manner. This mediator helps distribute light uniformly while preventing direct light mixing between sources that would create glare and dark spots.
3Illumination intensity
If optics are placed directly on LED light sources, then light direction can be controlled, but the fixture height increases
Solution Approach 1:
Multiple optics are combined into a single optics housing structure mounted on the housing rather than having individual optics on each LED. This merging reduces the overall fixture height while maintaining the ability to control light direction and distribution effectively.
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 results in a thin, uniform, and glare-reduced lighting solution with improved illumination uniformity and minimal dark spots, maintaining a high footcandle ratio and low glare values, while allowing for color adjustment and easy installation in modular ceiling grids.
Implementation Method 1
The fixture can have a reflective paper on the housing around the optics
Implementation Method 2
one or more lenses configured to be attached to the cover
Data Source
AI summary
Provided is a light fixture comprising: a) a housing; b) a cover for the housing; d) one or more lenses configured to be attached to the cover; and d) a plurality of LED light sources placed inside of the housing to provide a substantially uniform light through the one or more lenses.