Abstract: Provided are lamp systems, such as ultraviolet light curing systems, having lamp modules, components of such lamp modules, and methods of manufacturing such components and of using such lamp systems. Each lamp module includes a housing for, e.g., a row of lamps, formed of parts formed by extrusion and having end plates on the extrusion parts. The extrusion parts provide supports for replaceable or changeable quartz plates, replaceable or changeable chill beds and/or heat shields, and replaceable or changeable lamps. The extrusion parts also form air intake and air exhaust structures for cooling the lamp modules; and vanes are provided in the air intake structure, and sinusoidal surfaces are provided at the inlet to and outlet from the housing for material to be treated (e.g., a web having a coating thereon), to act as light traps to at least reduce light leakage from the housing.