/ Production from the Best Russian manufacturers /
   EPM221G 2+ generation 18mm tube with glass input and output
logo

These tubes produced by Ekran-FEP Ltd. and applied in popular night vision goggles PN-14K of Novosibirsk instrument making plant.
 

Main parameters:

Technical data

221G-00-11A

221G-00-11B

221G-00-11C

Useful diameter, mm

18

Photocathode type

S-25

Resolution, lp/mm

57

51

64

Signal to noise (at 108µlx)

22

20

24

Luminous sensitivity at 2850oK, μA/lm

550

550

600

Radiant sensitivity at λ=850 nm, mA/W

55

50

45

Gain at 2×10-5 cd/m2/lx, min

20000/π

20000/π

20000/π

Equivalent Background Input (EBI), µlx, max

1,5×10-3

Input current, mA

25

Input voltage, V

2,0÷3,6

Weight, g

55

MTTF (Mean time to failure), hours

5000

Field of view cleanness:

Zone
number

Circular
zone
dimensions, mm

Maximum diameter of spots

Admitted total
area of spots, mm2

neglected

admitted

diameter, mm

quantity

I

9.0

0.06

0.15

1

0.12

II

9.0-14.4

0.08

0.25

2

0.27

III

14.4-18.0

0.10

0.35

2

0.45

Main modifications of the image intensifiers: glass output, invertor, non-invertor.

 
Designed by © 2002 T|Design © Telescopes.ru