LED flood light is designed for indoor and outdoor applications, including Billboard lighting, Sport lighting, and Parking Lots. It is an energy-saving replacement for traditional flood light. This article is to share how to design and optimize LED flood light.
There are several tools available to model optomechanical designs like an LED optics. For the top of the light, a point source will be used in conjunction with 9 reflectors to illuminate an 80 x 80 mm square – represented by an absorbing detector – some distance from the flood light. The flood light casing may be modelled in a variety of ways.
In this article, we will use the above objects to model a LED flood light and will optimize for maximum flux to and uniformity across the detector. The final design file after optimization is provided at the end of this article.
The LED flood light designed in this article is similar to the model laid out in the mechanical drawing below.
First, we need to create a sketches titled “GrooveSketch”, “ShellSketch” and “ReflectorSketch” using the part designer, draw the sketch shown below.
The curved line segment between the points “ReflectorTop” and “ReflectorBottom” is an arc segments. Arc segments in ZPD are restricted to half arcs. This means that the radius of curvature must be greater than the distance between the start point and the end point. In this particular example, the radius must be greater than 5.385 units in length.
To optimize the optical properties of this part, the reflectors radius must be exposed.
Once the sketches for the LED flood light are finished, Navigate back to the Script Mode tab of ZPD and input the script as shown below:
Next, let’s go the optimization of LED flood light
The setting of the design is as below:
The setting of the design is as below
Once the Merit Function has been set up, start a local optimization by navigating to Optimize…Optimize!
We could built an LED flood light and optimized it for maximum flux and distribution across our detector.
The design file used in this particle is attached, please download it here (How to design)
Reference Source:
- https://www.zemax.com/
- Zemax Optical Design Program User’s Guide, Zemax Development Corporation
- https://en.wikipedia.org/wiki/Main_Page
