Concentric Ring Beam Shaping Lens for LED Pixilation
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Solution Overview
Problem
Traditional lenses are ineffective in beam shaping for distributed LED sources, as they are designed for point sources and fail to eliminate pixilation and color separation, which are common issues in LED lighting systems.
Innovation Solution
A lens with repeated concentric rings of refractive features, having non-vertical sides and varying vertex angles, is used to concentrate or spread light, obscuring the pixelated nature of the LED source and eliminating color separation, with a textured exit surface for additional diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional lenses are used for LED lighting, then the lens structure is simple, but the lens fails to effectively shape the beam and eliminate pixilation and color separation
Solution Approach 1:
The lens surface is segmented into multiple concentric rings with different refractive features. Each ring acts as an independent optical element that manipulates light from specific LED regions, enabling effective beam shaping and elimination of pixilation effects from distributed LED sources
Solution Approach 2:
Different regions of the lens surface are given different optical properties through varying refractive indices and surface curvatures across the concentric rings. This local variation in optical quality allows the lens to address specific issues like color separation and pixilation in different parts of the LED array
2Manufacturing precision
If traditional lenses designed for point sources are used, then the lens design is straightforward, but the lens cannot eliminate color separation and pixilation from distributed LED sources
Solution Approach 1:
The lens is divided into concentric rings that correspond to different zones of the distributed LED source. Each ring is optimized to handle light from specific LED elements, thereby eliminating color separation and pixilation effects while maintaining compatibility with various distributed LED configurations
Solution Approach 2:
The lens employs varying refractive indices, surface curvatures, and ring spacing parameters across different concentric zones to adapt to the distributed nature of LED sources. These parameter variations enable the lens to effectively manage color uniformity and eliminate pixilation for different LED arrangements
3Manufacturing precision
If conventional optical elements are used, then the system is easier to manufacture, but the aperture size must be larger to achieve effective beam shaping
Solution Approach 1:
The lens utilizes concentric spherical or aspherical curvature patterns in its ring structures, which enhance light manipulation efficiency. This curved geometry allows for precise beam shaping and elimination of optical defects while reducing the overall aperture size required compared to conventional flat or simple curved lenses
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 effectively shapes the beam, reduces pixilation, and eliminates color separation, allowing for more efficient use of LED lighting systems in various fixtures, including those designed for indoor and outdoor applications, while maintaining a smaller aperture size compared to traditional systems.
Implementation Method 1
A lens according to example embodiments of the invention includes repeated concentric rings of refractive features
Implementation Method 2
In some embodiments, the exterior face or exit surface of the lens also includes texturing
Data Source
AI summary
A beam shaping lens and an LED lighting system are disclosed. The lens according to example embodiments can concentrate or spread light, depending on the specific embodiment used. The lens according to example embodiments of the invention includes repeated concentric rings of refractive features, with either a constant or gradient feature angle. These features may include substantially triangular concentric rings. These features are located on the interior face of the lens, facing the LED source. In some embodiments, the exterior or exit surface of the lens includes texturing. A lens according to example embodiments of the invention can be used with various fixtures. Light enters the lens through the entry surface including the concentric rings, and exits the fixture through a textured exit surface opposite the entry surface.