Synergy Light began designing an IR Marker with a goal that is lightweight, has extremely bright light output, and runtimes that lasts for days on end. It’s also rechargeable with a battery pack that maintains its charge, even in storage.
They developed 850 and 940 nm prototypes of a device they are calling the 120IR, a 10” by 1 3/8” diameter polycarbonate tube that contains over 40 IR LED emitters. This unit is powered by a rechargeable lithium battery pack and weighs under 8 ounces.
Prototypes frature one second on, one second off, repeat, and the unit will run for 40 hours. Production quality units however, will be able to run five times longer.