It looks like the Lightbinder Blade model is based upon concept art for the MMORPG Rift.
Side by side: https://imgur.com/a/DNViRF0#sr5dVx4
Concept art from game's site: http://community.riftgame.com/wp-content/uploads/2012/05/Guardian_warrior_wep.jpg
I don't know if the same artist is responsible, or if this is alright, but I am concerned about copyright infringement here. The designs are too similar for this to be a coincidence.