Lens Surface Segmentation for Uniform, Low-Glare Luminaire Light
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Solution Overview
Problem
Existing lenses suffer from uneven light transmission, color differences, and fail to meet anti-glare specifications such as Unified Glare Rating (UGR) requirements due to lack of light mixing and scattering features.
Innovation Solution
A lens design incorporating light diffusing features on one surface and light shaping features on the opposing surface to scatter and shape light for uniform distribution, reducing glare and color separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional lens with uniform convex or concave surfaces is used, then the lens structure is simple and easy to manufacture, but the light transmission is uneven and produces color differences
Solution Approach 1:
The lens surface is segmented into multiple functional zones with different curvatures. The first surface includes a central region and peripheral region with different curvature characteristics, while the second surface has corresponding segmented regions. This segmentation allows different light paths to be controlled independently, achieving uniform light transmission and eliminating color differences while maintaining manufacturability through modular design
Solution Approach 2:
Different regions of the lens surface are assigned different optical properties through varying curvature radii. The central region has different curvature characteristics compared to the peripheral region, allowing each zone to optimize light transmission for its specific function. This local quality variation ensures uniform overall light transmission while keeping each local region simple to manufacture
2Device complexity
If a conventional lens with uniform surfaces is used, then the lens structure is simple, but the light distribution is uneven and fails to meet anti-glare specifications
Solution Approach 1:
The lens is divided into multiple functional surfaces with segmented curvature patterns. The first surface has a central region and peripheral region with different curvatures, and the second surface correspondsingly segments the light paths. This segmentation creates multiple light transmission paths that naturally mix and diffuse light, eliminating glare and color separation without requiring complex additional components
Solution Approach 2:
The lens design introduces curvature variation in multiple dimensional directions. By varying the curvature radius in different directions across the lens surface, the patent creates three-dimensional light path control that achieves uniform light distribution and eliminates glare. This multi-dimensional curvature approach provides effective glare control while maintaining relatively simple lens structure
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 lens achieves improved anti-glare characteristics by obscuring light source patterns and ensuring uniform light distribution while meeting UGR standards.
Implementation Method 1
The plurality of light diffusing features is adapted to diffuse light incident on the first surface to create diffused light
Implementation Method 2
The second surface includes a plurality of light shaping features protruding outwardly from the second surface in a direction away from the first surface and adapted to receive and shape the diffused light such that a desired light distribution exits the lens
Data Source
AI summary
A lens configured to cover light sources. The lens includes a first surface including a plurality of light diffusing features protruding from the first surface to a side of the light sources, and a second surface opposite to the first surface and arranged away from the light sources. The second surface includes a plurality of light shaping features protruding outwardly from the second surface away from or curved inwardly towards the first surface. The light diffusing features are adapted to diffuse light incident on the first surface. The light shaping features are adapted to shape the diffused light before being directed towards the outside.