Three tips to compare lighting design for LED grow lights

Growers buy LEDs with the aim of improving their crop yields. As a rule of thumb, 1% of the LED power corresponds to 1% of the crop yield. But growers need to be aware of a few things when growing under LEDs.

Here are three tips from Philips on how to get your money’s worth with your LED setup.

Free height

The free height is the height between the light and the top of the culture. It plays a big part in the uniformity. With some crops it can be difficult to find the best free height. For example, with high-wire tomato crops that can grow 5 to 8 feet tall, getting a good uniformity value can be a challenge.

For best results, measure your free height optimistically or measure at ground level as if there were no crop to improve evenness.

Reflection factors

Another set of parameters to be checked are the reflection factors of the lighting plan. Reflection factors indicate how much light is reflected from the greenhouse walls.

You don’t want to measure optimistically here. Use the DIALux calculation software to set the reflection values ​​for greenhouse lighting to 0%, since the glass for greenhouse walls should ideally not reflect any plant light.

Type of uniformity

There are many types of uniformity. The DIALux software offers you different types of uniformity. When comparing lighting designs, be sure to consider the nature of uniformity.

Philips strongly recommends uniformity as the average light intensity divided by the maximum light intensity as it best reflects a real situation.

To learn more and see two more tips, click here.


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