PR-581 (6x) night vision riflescope

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Night vision riflescope PR-581 (6x)

Night sights of PR 581 (6x) are designed for long-distance sight shooting during the night time, and provide high accuracy even under the most adverse weather conditions.

Night vision riflescope PR-581 (6x)
PR-581 Night vision riflescope (6x)
Night vision rifle scope PR-581 (6x)

The best series devices are equipped with the best as of today, IIT (Image Intensifier Tubes) of the 3rd generation manufactured by the Russian enterprise Katod (FOM> 1600). Optics and IIT parameters make it possible to define and detect targets at the maximum possible distance without any IR light source. Sighting lens include special high-aperture optics.
The night sights are equipped with green or white-black luminous color to provide the optimal observance convenience to avoid eyestrain. It is portable device with maximally light weight to provide optimal gun balancing.

The night sights are sealed and filled with nitrogen to prevent fogging, and have moisture and dust protection (IP67) that makes it possible to use it during wet weather (rain, snow, fog). These devices maintain all their functionality within the wide temperature range: from -40 to +50° С. Any of the night sights can be easily adapted for various gun manufactured in Russia or abroad. The wide product range provides devices that will satisfy any needs, tasks, or budged. The aiming is performed using the Mil-Dot reticle, which provides the value of the distance to a target on the base of its approximate dimensions. 

The sights are equipped with the automatic brightness control for aimpoints inner illumination, and a separate target reticle that can be of two types: red on green and yellow on green.
After a shift the reticle is always in the centre point of the device view to provide maximum image resolution.
The model is also equipped with an integral vision safe infrared high power light source (75MW) with brightness level and elevation adjusting.
The light source can also be adjusted in vertical plane to eliminate adverse side clutter from trees (grass, etc.)
The night sights have a perfectly durable design and can be freely mounted on guns with almost any bore (.375H&H and .50cal.). The eye relief is 45 mm, which provides safe shooting from large-bore guns without any accuracy losses.

Key features

  • Operability during 60 hours in the battery power mode.
  • Shockproof design
  • Waterproof.
  • Light weight.
  • Max. objects finding distance 440
  • Max. objects detection distance 275 meters
  • Automated brightness control
  • Bright-source protection
  • Wide range of infrared light, long-distance scanning.
  • Leak-proof design
  • Suitable for long-period observation
  • 1 year warranty

Specifications: Night vision riflescope PR 581 (6x)

CHARACTERISTICS PR 581 Night vision riflescope
Magnification 6x
Angular field of view, degree 8,6°
Lens system 150 mm. f. 2,0
Focus range, m. from 10 m. to infinity
Diopter setting from -4 to +3
Output pupil relief, mm. 45
Power supply lithium batteries CR123 / 3V (1 pc.)
Estimated battery life, hour 60
Operating temperature from -40 to +50° С   
Weight, g 1500
Overall dimensions, mm. 303x85x84

Specifications: IIT

Photocathode type S-25 Ga As
Photocathode sensitivity μA/lm. min. 500 min. 1800
Limiting resolution, lp/mm. 55-64 min. 64
Signal to noise ratio at 108 μlx,  min. 15 - 21 22 - 27
Minimum operating time, h. 10 000 12 000
Range of detection, m.:
- quarter moon to 310/350 to 400/440
- cloud cover to 200/220 to 250/275
Recognition range, m.:    
- quarter moon to 180/200  to 250/275
- cloud cover to 150/175 to 200/220