The top priority when choosing lighting is presenting the goods appropriately, and that their form encourages customers to buy. This means that “good lighting” and “light efficiency” are relative terms. Both of these depend not only on the overall brightness of the LED lighting (indicated in lumens) but first and foremost on the individual demands of the lit object. A more precise consideration of the brightness shone onto the goods (measured in lux) is required here.
In comparison with a conventional LED product without a lens, directional light from the ledxon product series for refrigerated cabinets provides better, and more even, illumination of products at the same output, despite their lower lumen rating. Depending on the refrigerated display unit, ledxon recommends an ideal brightness of 1,000 or 1,500 lux on the products.
Looking at the measurement points, it can be seen that directional light achieves significantly better, as well as consistent, product illumination that also creates a sense of depth in the display. In comparable products without a lens, all of the light radiates onto the refrigerated cabinet without any direction, resulting in too much light in some areas, and too little in others. This makes the LED lighting less efficient.
|DLB–B asym||1,600 lx||2,200 lx||1,600 lx||2,325 lm|
|Competing product||400 lx||900 lx||2,300 lx||2,760 lm|
Summary: The lens means that an average of 1,500 lx is achieved at all measurement points, and the light is evened out.
|DLB–B asym||2,000 lx||4,300 lx||900 lx||2,325 lm|
|Competing product||5,700 lx||1,100 lx||300 lx||2,760 lm|
|MDL–T||800 lx||1,900 lx||500 lx||1,680 lm|
|Competing product||300 lx||2,600 lx||300 lx||2,400 lm|
|MDL–H||700 lx||1,300 lx||—||965 lm|
|Competing product||300 lx||1,500 lx||—||1,380 lm|
MDL–T summary: The double light outlet enables both the top levels of the shelving as well as the front of the goods to be lit evenly, and the display to be illuminated to its full depth. With a lens, 500 lx is achieved, even at the base.
MDL–H summary: The light even reaches the rearmost point on the shelf.
|MDL–V||3,400 lx||1,500 lx||2,680 lm|
|Competing product||10,800 lx||200 lx||3,840 lm|
Summary: The lens guides the light onto the centre of the refrigerated cabinet’s front edge. This almost completely eliminates shady corners.