Optronics Scope Lamp

[tat2dman]

For Sale-Optromics 100 yard scope light,complete with red lens,wall charger and battery-looking for $35+$7.50 shipping(batterys pretty heavy)I`ll throw in a weaver ring to mount to your scope.A-1 Cond. :emoticon:

[PALTIK]

First time I've seen something like this...so here goes the dumb question: What is it for and what does it do?
Is it something like an illumination for nightvision optics?

[tat2dman]

Varmit hunting...