Photometric Diagram and Photometric Data Files

This article will provide a basic overview on how to read a photometric diagram and interpret it into a useful information. So, what exactly a photometric diagram stands for? It is a visual representation of a light diffused by a lighting fixture, which provides a valuable information on how the light is distributed and falls upon a surface. In other words, the diagram shows what kind of light distribution is expected from the lighting fixture. Interpretation of the photometric diagram In order to better understand the logic behind the photometric diagram, let’s review diagram of Hydra lighting fixture as an example. | ![](... Read more