Disinfecting methods and apparatus

An assembly for bacterially disinfecting a designated target site, the assembly comprising:

• a first end emitting optical fiber having a terminal end configured to only end emit a first beam of bacterial disinfecting light from the terminal end;
• a first body including a plurality of optical surfaces that are configured to direct at least a portion of the first beam of bacterial disinfecting light to the target site, the plurality of optical surfaces including a first refractive optical surface, a second refractive optical surface and a first total reflective surface, the first total reflective optical surface being disposed between the first and second refractive optical surfaces in a designated optical pathway of the first beam of bacterial disinfecting light;
• and
• a substrate, the substrate including one or more channels in which reside one or more radially emitting optical fibers that are configured to radially emit bacterial disinfecting light, the substrate being at least partially transparent to the bacterial disinfecting light, the first body being positioned above and physically coupled to the substrate.