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Safe Light Visual Surveilance – Mechanisms of safe light countermeasures

Safe Light Visual Surveilance - Mechanisms of safe light countermeasures

Continuing blinding (light curtain, light halo)

  • Light scattering in the eye tissues
  • Light scattering on transparent objects (optical devices, window glass…)

Flash blindness

Fluorescence of eye tissues or objects in front of them (veiling glare)

Continuing blinding

Flash blindness

 

(Light) scattering in eye tissues

(Light) scattering in eye tissues

 

Image contrast

Safe Light Visual Surveilance - Mechanisms of safe light  countermeasures

Safe Light Visual Surveilance - Mechanisms of safe light  countermeasures

 

Image contrast

Cmax ≈ 30 % Cmax ≈ 3 % Cmax ≈ 1 %

Safe Light Visual Surveilance - Mechanisms of safe light  countermeasures

 

Special laser flashlight “POTOK”

AO «NPO Spetsmaterialov»

Special laser flashlight "POTOK"

Minimal permissible distance when used is no less than 4 m

  • Coherent radiation wavelength is 635-660 nm. The optical power density of coherent radiation at a distance of 4 m is a 3A class.
  • Laser mark size at a distance of 4m is 280±70 by 15±10 mm.
  • MVD operational article

The SKNV (“СКНВ”) system of complex non-lethal impact

The SKNV ("СКНВ") system of complex non-lethal impact

Light intensity relative to the axis of the light flux in continuous mode at a distance of 10,0 ± 0,5 m is no less than 20 000 lux.

The maximum power density of the 1st channel laser radiation

— wavelength λ=532 nm (green light) at a distance of 10,0 ± 0,5m is no more than 43 mW/cm2.

The maximum power density of the 2nd channel laser radiation — wavelength λ=635 nm (red light) at a distance of 10,0

± 0,5m is no more than 90 mW/cm2.

Luminous flux over 20,000 lumens ( 33 W if converted to 532 nm)

Saber 203

Saber 203

PHaSR (Personnel Halting and Stimulation Response)

PHaSR (Personnel Halting and Stimulation Response)

Battlefield Optical Surveillance System(BOSS)

Air Force’s Phillips Laboratory

Air Force's Phillips Laboratory

  • 1 W 532nm laser
  • And also:
  • 45-W 808 nm searchlight
  • 8-12 µm FLIR

Laser dazzlers in the USA operational service first-generation

Laser dazzlers in the USA operational service first-generation

 

Laser dazzlers in the USA operational service second generation

Laser dazzlers in the USA operational service second generation

 

StunRay® XL-2000

Genesis Illumination, Inc (USA)

StunRay® XL-2000

Light intensity of 105 candelas (45 times more than a car headlight)

 

Megaray MR175

Megaray, USA

Megaray MR175

  • Power: 175 W
  • Divergence: 2о – 6о
  • Mode: continuous or 8 Hz strobe
  • Weight: 3.6 kg

 

ShipRayTM BBL-3

Genesis Illumination, Inc (USA)

ShipRayTM BBL-3

  • Power: 6 х 1 kilowatt
  • divergence: 1.4о
  • weight: 98 kg
  • Range of: illumination – a few nautical miles inhibition – 0.5nautical miles (at night)

Illuminance range

 

E b , lxconditions
3∙10-4Moonless star sky
0.1-1Full-moon clear sky
2-300Twilight
30-70House lighting
101 – 102Maximum light intensity limit for an eye exposed to the
635-650 nm laser radiation
102 – 103Grey day
102 – 103Maximum light intensity limit for an eye exposed to the
532 nm laser radiation
104In th shade under a clear sky
(0.3-1.3) ∙105In the full sun

 

International Commission on Illumination (CIE)

Safe Light Visual Surveilance - Mechanisms of safe light  countermeasures

– an angle between the direction of the light source and the line of sight ( 0. 1о < Θ < 100о) А – observer’s age (years)

р – eye pigmentation factor (р = 0-1.2 )

eye pigmentation factor

  • P=1.2
  • P=0
  • A=30, Lb=10

Light Cone Limit

Light Cone Limit

Maximum angle of lighting  at the laser power limit P=79 µW and 532 nm

 

Light sources available at the market

λ, nmtypeР, WSF, lm
440-450LDup to 5 – single0.05170-3400
up to 100 – matrix0.4-0.45 -night
473DPSSUp to 10.12up to 90
0.72 –night
520-555LD3@555 nm (matrix?)0.6-1.02000
7@520 nm (matrix)
2600
532DPSS160.899700
635-650LD40 (638 nm) fiber 400 µm,0.25-0.155500
NA=0.22
whiteХеup to 50025 lm/Wup to 12000
4375 – MegaRay
MR175
whiteLEDUp to 100
273lm/W
CVM-32-56-95-54-FC00-F2-224800
(LUMINUS)91 lm/W

 

Pulse lighting (illuminance)

Pulse lighting (illuminance)

 

«LS-101» (ЛС-101) sniper countermeasures laser station

ОAO «OKB Granat»

«LS-101» (ЛС-101) sniper countermeasures laser station

 

PAPV  sniper countermeasures device

(portable automatic optical-electronic countermeasures device) АО EKBtochmash im. A.E.Nudelman

PAPV  sniper countermeasures device

  • Probing radiation: 2 W @ 0.86 μm, 6 kHz
  • Radiation power (laser power emission):
  • Pulse frequency 0.1 Hz
  • Pulse energy:
  • 200 mJ @ 0.53 μm
  • 1.5 J @ 1.06 μm Operating range: 300 – 1500 m Weight: 56 kg
  • 5P-42 Philin and 5P-42E Grach visual- optical jamming stations

 

AO “Opytnyi Zavod “Integral”

AO "Opytnyi Zavod "Integral"

  • Spectral range: 0.35-2.5 μm
  • Modulation frequency: 5-15 Hz
  • Consumed power: 2.4 kW

 

Megaray MR175

Megaray, USA

Megaray MR175

  • Power: 175 W
  • Divergence: 2о – 6о
  • Mode: continuous or 8 Hz strobe
  • Weight: 3.6 kg

 

Maximum eye-safe lighting (Maximum eyesafe exposure limit)

Maximum eye-safe lighting (Maximum eyesafe exposure limit)

Calculated eye recovery time after foveal exposure to laser radiation with a wavelength of 550 nm at different background illuminations. The black color shows an eye-safe area, and the grey shows a damaged area.

 

LED incapacitation

Intelligent Optical Systems etc.

Intelligent Optical Systems etc.

 

Eye tissues luminance

Eye tissues luminance

 

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