XD-4 Image Intensifier Tube Performance Outline

Minimum XD-4 performance outline:

Sensitivity:

Signal to noise ratio at 108 µlx : 20
Luminous sensitivity, white light : 700µA/lm
Radiant sensitivity at 830nm : 60mA/W

Image quality:

Resolution : 60lp/mm
Modulation transfer function
2.5lp/mm : 90%
7.5lp/mm : 75%
15lp/mm : 60%
25lp/mm : 38%
30lp/mm : 28%
Halo Diameter : 1mm (max)
Blemishes: 9 (max)

General Characteristics (maximum):

Input current : 18mA
Luminous gain : 50000lm/lm
Screen luminance : 15cd/m²
Equivalent background illumination : 0.25µlx
Shock : >5000m/s²
MTTF, (Mil-Spec) : 10 000 hours (min)