L3 Harris Filmless Image Intensifier Tube White Phosphor Black. A greater Signal-to-Noise Ratio (SNR) along with reduced halo size provide unrivaled sharpness and resolution in low-light scenarios. Specifications for L3 Harris Filmless Image Intensifier Tube: Manufacturer: L3 Color: Black Image Intensifier Color: White Phosphor Package Contents: L3 Harris Filmless Image Intensifier Tube L3 11769UW-SA-C001-20UM: Harris Filmless Image Intensifier Tube White Phosphor Black