  We have developed a passive 350 GHz (850 {\mu}m) video-camera to demonstrate
lumped element kinetic inductance detectors (LEKIDs) -- designed originally for
far-infrared astronomy -- as an option for general purpose terrestrial
terahertz imaging applications. The camera currently operates at a quasi-video
frame rate of 2 Hz with a noise equivalent temperature difference per frame of
$\sim$0.1 K, which is close to the background limit. The 152 element
superconducting LEKID array is fabricated from a simple 40 nm aluminum film on
a silicon dielectric substrate and is read out through a single microwave
feedline with a cryogenic low noise amplifier and room temperature frequency
domain multiplexing electronics.
