Dark Field Ring Light RL/DF Series

Ring Light / Dark Field (RL/DF Series) The Spectrum Illumination Series RL/DF Ring Lights are used for both bright field and dark field applications. Dark field lights are used in order to illuminate edges and surface defects. The four arrays on the RL/DF Lights are able to be adjusted from 0-90 degrees so that edges and features will be illuminated properly.