Brightlx Optics

How to design a polarized LED street light lens?

Designing a polarized street light lens involves careful consideration of various optical and mechanical factors. Here are the key steps and factors to pay attention to in the optical design of such a lens:

1. Understand the Requirements:

Define the specific requirements of the street lighting application, including the desired light distribution, beam angle, and polarization angle.

2. select Suitable Materials:

Choose appropriate optical materials that offer good light transmission and can withstand outdoor environmental conditions, including UV resistance and thermal stability. (PC material is the choice of many customers)

3. Polarization Orientation:

Determine the desired polarization orientation. Polarized lenses are designed to filter and transmit light with a specific polarization angle. The orientation should be chosen to minimize glare and unwanted reflections in the target area.

4. Optimize Lens Shape:

Design the lens shape to control the direction of light and achieve the desired light distribution pattern. The lens may be designed with multiple facets, prisms, etc.
5. Surface Coatings:
Consider applying anti-reflective or polarization coatings to the lens surfaces to further control light transmission and minimize unwanted reflections.

6. Optical Simulation:

Use optical design software to perform ray tracing simulations to visualize and optimize the performance of the lens. This step helps in achieving the desired light distribution and polarization effects.