Night Owl NONB2FF Owner's Manual
Also see for NOB3X: Owner's manual
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Frequently Asked QuestionsWhy are the projected images always green using Night Vision technology?The human eye resolves detail best at the wavelength of green light.How should I care for my Night Vision device?Do not operate in lighted conditions; device is for use in the dark.Do not drop the device. The internal intensifier tube is made of glass and is sensitive to impact.Why do you focus both the front (Objective lens) and Eyepiece (Ocular Lens)?You do not see through the Night Vision device, like a day binocular. Rather you see thephosphor screen on the back of the tube. The objective lens focuses the image on to the frontof the intensifier tube. That image is then converted into electrons. The electrons strike thephosphorous screen converting electrical energy into a visible image. The eyepiece focusesyour vision on to the image on the phosphorous screen.What is the effective range of Night Vision?The maximum viewing distance depends on the environmental conditions and the size ofthe object being viewed. Overcast conditions, fog or rain will reduce the effective distanceyou can see. The Infrared Illuminator will increase viewing range, especially in areas ofcomplete darkness where there is no ambient light.What is the maximum effective distance of the Infrared Illuminator?75 to 125 yds. The farther the object, the less intense the infrared light will be on the target.Are Night Vision devices safe?Night Vision products include shield-encased image intensifiers. The infrared illuminatorutilizes light emitting diodes (LED’s) operating in the near-infrared range and will not harmyour eyes like a laser.CAUTION: Do not point Infrared Emitter directly into eye at close range.The infrared Emitter emits a BRIGHT, although invisible, beam of light.As with any bright light, do not point into the eye.Recognize that the image produced on the phosphorous screen can be very bright. Staring intoa very bright light causes the pupil to constrict. Your eye needs time to adjust to ambient light.When can I expose the unit to light?For demonstration purposes there is a pinhole in the lens cap, which enables you to power onthe unit in a lighted environment. The lens cap can be taken off during daylight, but the unithas to be powered off.What is Generation 1? How does it differ from other Generations of Night Vision devices?Generation 1, 2, 3 and 4 all employ electron bombardment technology. All of thesetechnologies convert light into electrons and reproduce the image on a phosphorous screen.Generation 1 produces a higher resolution image than Generation 2.Generation 3 and 4 are used by the United States Military and are very expensive. |
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