Is this a 10x10 cold light head?
It looks like a UV contact printer.
If not a UV printer, it may designed for erasing PROM chips. It looks like a UV box and could be used, or modified to use, for printing.
In addition to zapping PROMs, it could have been used to expose circuit boards for photo etching too.
"Vocation to Solitude -- To deliver oneself up, to hand oneself over, entrust oneself completely to the silence of a wide landscape of woods and hills, or sea, or desert; to sit still while the sun comes up over the land and fills its silences with light." Thomas Merton