bandpass filters used in aesthetics. filters can be with or without coating. Bandpass FiltersCo-Energy supplies IPL filters with all surfaces ... BK7, Fused Silica, sapphire and so on.IPL filters are the key optical element for IPL (intense ... Pulsed Light) machine, which filters the UV wave and reserve the useful wave from ... 1200, 695 ∼ 1200, 755 ∼ 1200, 780 ∼ 1200 nm Bandpass Filters