yes, we thought about it in 2015, and we tested on our Mars II 700. if we use a secondary lens, it will increase the PAR at the center point, but at the same time, the coverage will be reduced dramatically. also, the secondary lenses will reduce the output of light also. so we do not think putting a secondary lenses is the right thing. lenses will reduce the output of lights, that is the reason we design our reflector series.