Built-in HyperGen or Gen 3 Image Intensifier Tube (IIT), high FOM equivalent to Gen. 3 and XD-4.
Integrated power supply, provides Automatic Brightness Control (ABC) and Bright Source Protection (BSP) to guard against exposure to over brightness (Automatically shut down to protect IIT).
Built-in 5mW infrared illuminator for illuminating in the totally dark places.
Long eye relief distance, no need to adjust it.
Various optional C-mount objective lenses (4X, 10X or others) are interchangeable for long distance viewing.
Compact, endurable construction, light weight, waterproof and easy operation.
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Application diagram
Specifications
Model
NVS 7-2/XT
NVS 7-3/XT
Image Intensifier Tube (IIT)
Image Intensifier Tube
18 mm HyperGen
18mm
Gen 3
Grade
XT
Photocathode operating diameter, mm
18
Photocathode type
S-25
GaAs
Resolution, min, Lp/mm
57-64
Photocathode sensitivity, µA/lm
600-750
1200 above
Luminous Gain, fL/fc, min
40,000 fl/fc at 10-6 fcd
Image magnification
1
Dark background brightness, max. cd/m²
1.5x10-3
Signal-to-noise ratio, min.
20-23
20-24
Current consumption, max, mA
16
Mean time before failure, hours
10,000
Keep time, years
15
Magnification
1x (can add 4x lens directly, option)
Field of view
40°
Objective focal length, mm
25 ~ ∞
Objective F number
1.2
Eye relief, mm
25
Interpupillary distance, mm
57-73
Focus range, m
0.25
Dioptric correction
±5
Power supply
Standard AA batteries *2
Battery life, hours
80 (I/R off) above
30 (I/R on) above
Low battery indicator
V
I/R ON indicator
V
Dimensions (include 1X lens), mm
Approx. 135x120x55
Weight (include 1X lens), g
<430
Standard package
Main body of NVS-7
Short lens(1x), 30cm, 60 minutes immersed protection
Standard 25mm lens(1x), 30cm, 30 minutes immersed protection
