Adjustable Local and Remote Visoring for LED Beam Control
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Solution Overview
Problem
Conventional lighting designs for difficult to light or non-standard areas, such as racetracks, face limitations in achieving precise sharpness of cutoff and beam control due to constraints on mounting heights, complex target shapes, and high lighting uniformity, often resulting in undesirable beam shift and glare.
Innovation Solution
The integration of adjustable local and remote visoring systems that allow for precise LED lighting by combining light directing and redirecting means at the lighting fixture with remote visoring, enabling uniform and individual adjustments to achieve sharper cutoff and beam control without significant beam shift or cost prohibitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If local visoring is extended to increase sharpness of cutoff, then beam control improves, but weight and cost increase prohibitively
Solution Approach 1:
The visoring system is divided into local visoring (attached to the fixture) and remote visoring (separate, adjustable components). This segmentation allows the sharpness of cutoff to be achieved through combination of both systems rather than requiring excessively long local visors, thereby reducing weight and cost while maintaining beam control precision.
2Manufacturing precision
If local visoring is pivoted to improve beam control, then cutoff sharpness improves, but beam shift occurs and beam control is lost
Solution Approach 1:
The system incorporates adjustable remote visoring that can be dynamically positioned to achieve the desired beam control without requiring excessive pivoting of local visors. This dynamic adjustment capability allows optimization of beam control while maintaining beam stability and preventing beam shift.
3Ease of operation
If conventional lighting designs are used for difficult to light areas, then mounting constraints are simplified, but sharpness of cutoff and beam control deteriorate
Solution Approach 1:
Remote visoring acts as an intermediary component that bridges the gap between conventional lighting designs and the requirements for sharp cutoff in difficult-to-light areas. It provides the necessary beam control and cutoff sharpness while maintaining ease of mounting and installation.
4Manufacturing precision
If second surface mirrors are used in local visoring to improve beam control, then cutoff sharpness improves, but handling and installation difficulty increases
Solution Approach 1:
The patent uses alternative reflective surfaces that replicate the beam control functionality of second surface mirrors without the handling and installation difficulties. These alternative surfaces provide the necessary beam control and cutoff sharpness while being easier to handle and install during commissioning.
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
This approach provides precise LED lighting with increased sharpness of cutoff and beam control, addressing the limitations of conventional designs by allowing for flexible and cost-effective solutions in complex lighting applications, including pole mounting and stacked fixtures, while minimizing glare and spill light.
Implementation Method 1
light directing and redirecting means at the lighting fixture with remote visoring, enabling uniform and individual adjustments to achieve sharper cutoff and beam control
Data Source
AI summary
Lighting applications which are particularly difficult to light because of “non-standard” target areas (or otherwise) would benefit from advancements in lighting design. That being said, conventional wisdom in lighting design has practical limitations—conventional means of visors at/on lighting fixtures (i.e., local visoring) can only become so long to provide beam cutoff before becoming prohibitively heavy or costly, for example. Local visoring can only be pivoted so far before beam shift occurs (e.g., shifting the physical location of maximum candela or photometric center), as another example. Conventional wisdom can only buy so much cutoff and beam control before the overall lighting design is impacted—and so an alternative approach is warranted. One such alternative approach which relies upon a combination of remote visoring and local visoring is discussed; additional approaches are also discussed.