Basics of Purchasing a Night Vision Optic
Other than choosing between a night vision monocular, binocular, or goggle, the biggest decision relates to desired image quality, and this is a direct function of the method of image intensification employed. In the world of night vision optics, these differences are most commonly classified as "generations."
Generation I optics use a photocathode tube and provide good performance at a reasonable cost.
Generation II units add a micro-channel plate (MCP) to decrease image distortion and increase light amplification.
Generation III adds Gallium Arsenide to the intensifier tube, producing an even brighter and sharper image.
Generation IV optics employ the latest technological advance, Gated Filmless tubes, to provide excellent low light level performance and triple the high light level resolution.
Night vision monoculars and binoculars differ from their daylight counterparts in that they are used to see in the dark rather than at long distances. Depending on the size of the object and the amount of ambient light, Generation I units provide maximum image detection at 75-750 yards, Generation II at 100-100 yards, Generation III at 150-1250 yards, and Generation IV at 200-1400 yards. However, 10-100 feet is typically the maximum range for detecting image detail for average sized objects such as viewing wildlife.
All night vision optics require some light to work. However, many units include an infra-red illuminator to allow their use even in total darkness. Depending on the strength of that illuminator, detection may extend to 100 yards, allow the viewing range may be decreased by 50%.
Technology does come at a price. For each generational advance, the cost increases by two or threefold. That's why Generation I night vision optics are still the most popular, allowing users to explore a previously undiscovered world.
Related Tags: night vision monoculars, night vision, monoculars, binoculars, goggles
Bruce Nesbitt is a retired dentist and 20 year resident of Alaska. His interests are naturally outdoor related and include hunting, fishing, camping, and photography. Living in the land of the midnight sun, the extended periods of darkness led to his interest in low level light illumination and the development of his website, offering a full range of night vision products. For more information please visit http://www.nightvisionmonoculars.net/index.html
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