A lamp retainer for a UV lamp system includes a retainer bracket having a registration surface configured to engage a UV lamp to thereby facilitate accurate and repeatable positioning of the lamp in a lamp housing. In one embodiment, a gradient of an original surface is generated, and the data representing that gradient is compressed, then stored andor transmitted. The first and second semiconductor chips may have corresponding first regions and corresponding second regions. A seal is disposed between the shaft and the perforating member. This often includes transmission of a wireless signal through portions of the structure.