DNT Optics The One 7-35×56 Illuminated TOR FFP – Zero Stop – 34mm TubeDNT (formerly Arken) stands for Day Night Technologies as a nod to our passion for seeing in the dark. Optics should not be limited to the time of day or the amount of available light. Typically being able to see in the dark is prohibitively expensive. Because of the evolution of technology, it is becoming more accessible and we are working to make it available to our customers. Seeing in the dark is not our only focus. As our name implies we will be