Non-Reciprocity of Exposure of UV-Curable Materials and the Implications for System Design

It is a fairly common practice for a supplier of commercial formulations to indicate the "cure" requirement of a UV-curable coating, ink, adhesive, or paint in "joules per square centimeter" (J/cm²) or in "millijoules per square centimeter" (mJ/cm²). Typically, this does not include much more additional information than the identification of the general UV wavelength band of interest, or the general type of lamp to be used.