Armasight IR850 (long-range infrared illuminator) provides greater image intensified viewing capabilities for operations in little to no ambient light. Infrared illuminator is used in areas where the level of natural light is not sufficient. An IR850 illuminator provides near-infrared light which, although invisible to the naked eye, can greatly enhance the performance of night vision devices. The illuminator features adjustments for field of view divergence and output power. Armasight long-range IR850 illuminator significantly extends capabilities of Gen 2+ and Gen 3 night vision weapon sights and observation devices.