Zero Light Bleed Rigid Light Pipes BIVAR Zero Light Bleed Rigid Light Pipes come with zero light bleed adapters that surround SMD LEDs and channel light directly to the lens. These light pipes eliminate light bleed at the source. The zero light bleed pipes are manufactured with a polycarbonate material and feature flat and domed lens styles. These economical light pipes are meant for high-vibration environments. The zero light bleed pipes come to use with a variety of surface-mount LEDs.