Since most products in supermarkets are displayed in a vertical fashion, the light detector measuring the illumination levels on the shelves needs to be held vertically. The ambient illumination is to be measured horizontally. In order to create the highlighting effect, the vertical illumination level on the product needs to be at least twice as much as the ambient illumination next to it. Investment in a well-lit store will result in a short payback. For example, in the Lighting Research Center study, the increase in sales in bakery resulted in a simple payback period of two years by assuming an average profit of 57 percent for in-store bakeries.
Customers often associate a store's lighting with the quality and cleanliness of the store.
Effective and selective use of lighting can influence customers' buying decisions. You only buy what you can see. The company designs and produces lighting fixtures for the display shelving.