4x Telephoto Infrared Smart Lens RSE

Fluke 4x Telephoto IR Smart Lens for RSE300, RSE600; ideal for petrochemical, electrical utilities, and metals refinement.




View your target magnified 4 times more than a standard lens while staying on the ground or a safe distance away. A 4x telephoto lens can help identify a potential issue in your equipment, even when your target is as tiny and distant as a failed splice on a high electrical line or an overheated refractory on a tall flare stack.

  • Avoid the hassle of sending in your camera to calibrate with the lens – with smart lenses you can just attach the lens to any compatible camera and start taking images.
  • This lens includes a patent-pending lens attachment system that holds the lens securely in place, reducing lens wobble.
  • Made of 100 % diamond-turned germanium with an engineered coating, the most efficient available material to transmit energy to the detector.

Compatible with RSE300, and RSE600.


IFOV (spatial resolution)
320 x 240 camera : 0.33 mRad
640 x 480 cameras : 0.25 mRad
Field of view 
320 x 240 camera : 6° H x 4.5° V
640 x 480 cameras : 9° H x 7° V
Minimum focus distance : 254 cm (approximately 100 in) 


Model Name Description
FLK 4X LENS 4x Telephoto Infrared Smart Lens RSE
For use with the RSE300, and RSE600 Infrared Cameras.