Ptolemy's Refracting Mirror Lens

Origin
Ptolemy was an ancient astronomer and mathematician who wrote several discourses on constellations, orbits, geography and optics. It was through this work he discovered Archimedes plans of an invention that could burn down ships by the power of the sun. Ptolemy decided to remake his experiment but added his own tweaks to it. After a successful test run destroyed half of his home, Ptolemy decided to dismantle the device and sell it.

Although some of the lenses were collected during Warehouse 9, the rest are missing. The ones in Warehouse were used to create space for the construction of Warehouse 13 in its current mountainside. The only known recorded use of the missing lens was during the mid-18th century in London, which caused the Great Fire of Hindon.

Effects
Letting light into the lens allows the lens to convert the light into an extremely high concentrated beam of thermal energy, making it the first true death ray.