Porównanie noktowizorów TEST [ENG]
Porównanie wykonane przez:
Tactical Night Vision Company – TNVC
www.tnvc.com
(909) 796-7000Practical Application of Night Vision for Domestic
Law Enforcement & Homeland Security
By Chip Lasky, TNVC Manager, Marketing & Product Development And John Chapman, Director of Training, LMS Defense
Nie jestem autorem tekstu oraz zdjęć! Test został opisany przez "TNVC_Clasky" i pochodzi oryginalnie ze strony ar15.com (http://www.ar15.com/forums/t_6_18/329958_.html) skąd też pochodzą odnośniki do zdjęć - nie zostały one pobrane i umieszczone na własnym serwerze
Test został przeprowadzony na pięciu urządzeniach od generacji 1+ do 3 (ITTE-NEPVS-14-17 pinnacle, Litton PVS14, GT-14 SHP gen.2, d300 gen.2, ATN Viper gen.1+ ). Przeprowadzono test w 9 różnych sceneriach z użyciem wszystkich opcji (podczerwień wbudowana, latarka z filtrem IR) pokazując widoczność obiektu (w tym wypadku człowieka) w różnych odległościach przy różnym szczątkowym oświetleniu korzystając z różnych urządzeń o odmiennych parametrach. Każde zdjęcie opisano jest w jakich warunkach zostało wykonane a pod każdym zdjęciem wstawka ze spostrzeżeniami.
Urywek/Cytat w oryginalnej formie
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Test Scenario 7 – Parking Lot Search
This scenario was designed to test the equipment in a common patrol application, searching a parking lot for a hiding subject. Environmental lighting was minimal, as would be the case in an industrial parking area during non business hours.
ITT PVS-14 Night Enforcer Gen3 PINNACLE Auto-Gated Image Intensifier
The Gen3 PINNACLE Auto-Gated tube clearly acquires the subject behind the vehicle. The environment details are shown clearly. The subject is partially obscured and in shadow behind the vehicle. A weapon is partially visible in his hand.
The built-in IR illuminator did not add any value to the image. It is negligibly lighter.
The additional higher-power illuminator heavily brightens the image. The IR light reflects off the subject so much that he appears to glow. However, shadows are completely illuminated. The weapon clearly contrasts against the lighter shirt.
Litton PVS 14 Gen3 Auto-Gated Image Intensifier
As with the PINNACLE unit, the Litton Gen3 Auto-Gated tube clearly shows the scene with the subject behind the vehicle, holding a weapon.
The built-in IR illuminator did not add any value to the image. It is negligibly lighter, with some IR reflection on the tail light.
The additional higher-power illuminator heavily brightens the image. The IR light reflects off the subject so much that he appears to glow. However, shadows are completely illuminated. The weapon clearly contrasts against the lighter shirt.
GT14 Gen2SHP Image Intensifier
The Gen2 SHP tube does a good job of displaying the image. There is less resolution than with the Gen3 units, but the image is still useable, clearly showing the subject behind the vehicle with a weapon.
The built-in IR illuminator did not add any value to the image. It is negligibly lighter.
The additional higher-power illuminator brightens the shadows, revealing the subject more. The weapon is clearly seen against the subject’s shirt.
D300 Gen2+ MILSPEC Image Intensifier
The Gen2+ unit displays a very dark image. Details of the dark vehicle are indistinguishable. The light rims are easily seen. The subject is almost completely obscured behind the vehicle, making it almost impossible to acquire him.
The unit detects a reflection of IR light from the tail light when using the built-in illuminator. This inadvertently draws the user’s eye to that location where the subject is partially visible. The weapon is undetected.
The additional higher-power illuminator is required to observe the subject and see the presence of a weapon. Other details are still much obscured because of the relatively poor light-gathering abilities of the Gen2+ tube.
ATN Viper Gen1+ Image Intensifier
The Gen1+ unit produces no image without the addition of an IR light source. It is too weak to use the loading warehouse lights in the distance.
The built-in IR illuminator did not add any value to the image. All that can be seen is the reflection of IR light from the tail light, but it still does not produce enough light to see the subject.
The additional higher-power illuminator cannot help the Gen1+ tube much. It still does not have enough light to resolve an image. The subject is barely visible behind the vehicle, but there is not enough of an image to properly acquire him or identify a threat.
Thoughts-
Again, the Gen3 PINNACLE, Gen3 Auto-Gated, and Gen2 SHP performed well with the Gen2 SHP providing a darker, but still useable image. Searching a parking lot is a common scenario for law enforcement. The low-performing Gen2+ and Gen1+ units proved incapable of properly acquiring the subject and identifying the threat.
pełny test pod adresem (http://www.ar15.com/forums/t_6_18/329958_.html)
