Looking for an inexpensive 2nd Generation Goggles? Our ATN NVG7-2B Night Vision Goggle System gives you a compact, lightweight and rugged hands free system at a bargain price.
Our "2B" B-Spot Spec Tubes are 2nd Generation units with blemishes within the viewing area that exceed the allowable amount for our standard grade.
Grade "B" Tubes with minor blemishes with severity that is not to detract from normal viewing. These are usually the result of manufacturing imperfections that have no or very negligible affect on reliability and are not a cause for repair work. Cosmetic Blemishes can include Emission Points, Black Spots or Dark Lines.
These cosmetic imperfections do not impair the performance or warranty of these Tubes, and provide a very cost effective option of owning a top-quality unit at a fraction of the regular price.
Emission Points.
A steady or fluctuating pinpoint of bright light in the image area that does not go away when all light is blocked from the objective lens of the Monocular. The position of an emission point within the image area does not move.
Black Spots.
These are cosmetic blemishes in the Image Intensifier or dirt or debris between the lenses. Black spots are acceptable as long as they do not interfere with viewing the image.
Dark Lines.
One or a few irregular dark thin lines seen in some areas within the field of view. This is typically viewed in high-light conditions.

Images for demonstration of possible blemishes only.
B-Spot spec tubes may be slightly worse or better then depicted images