This is a dome shaped desk lamp that uses a candelabra light insert from Westinghouse.

You should use an LED bulb in the candelabra cord set to avoid melting the plastic lamp.

I've included the 123D Design file for remixing.

http://www.homedepot.com/p/Westinghouse-6-ft-Cord-Set-with-Candelabra-Base-Socket-and-Cord-Switch-7000300/204835972

http://www.westinghouselighting.com/lighting-accessories/light-fixture-accessories/lamp-accessories-and-hardware/6-cord-set-with-snap-in-pigtail-socket-and-cord-switch-7000300.aspx