Unknown Manufacturer Rotating Prism Light

I don't recall where I found this unit. Currently it is white, but it is going in for a paint job! This unknown manufacturer rotating prism light tag says BEI, but I have never heard or seen of this company?? Unit is small, but with the way the optics are places it puts out a ton of light! The dichoric prism rotates at a constant speed and makes a unique pattern around the room. Bulbs are 2 X 12 volt, 50 watt EXN bulbs. No cooling fan needed as the bulb power is very low. Unit uses only 1 motor for rotation. I have no idea where this unit is produced as it is not listed.