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How Night Vision Works
Light (like moonlight or starlight) coming into the device from the direction of the object is
gathered by the objective lens and focused onto the Image Intensifier Tube.
The front of the Image Intensifier Tube contains a photocathode which converts light into electrons.
The device contains a very high voltage power supply, which converts the 3 volts supplied by
the battery into 17 kilovolts.
The high voltage hurls the electrons into the phosphorous screen. The phosphorous screen
illuminates with an image when struck by electrons. The eyepiece optic then focuses the
phosphorous screen image to your eye.
Phosphorescent
Screen
Eyepiece
Photo Cathode
Screen
Electrons
Infrared
Illuminator (IR)
Object
Objective
Lens
6
In a DARK environment:
Step 6
In the dark, remove LENS CAP.
Step 7
Do NOT rotate EYEPIECE. Rotate OBJECTIVE LENS until objects come into focus.
You have already adjusted the EYEPIECE to your individual eyesight.
Rotate the OBJECTIVE LENS to focus on objects at varying distances.
Step 8
Click on the INFRARED button.
A beam of infrared light, invisible to the human and animal eye, provides extra illumination.
For technical assistance, call our customer service line at 1-800-444-5994.
If you have any problem, call before returning the product to the store where purchased.
Image Quality
The image you see through a Night Vision device is VERY DIFFERENT from the image observed
using day-time monoculars. A Night Vision image is electronically amplified and then
reproduced on a phosphorus screen and therefore not as "clear" as a day-time monocular
image.
Light and dark marks (spots) caused by the Electronic Intensifier Tube can be seen in the field
of view. These are normal and are not defects in the Electronic Intensifier Tube.
Image sharpness is also not consistent across the field of view. The image has very high
resolution in the center. The image becomes more distorted toward the periphery of the image.
Due to our sophisticated corrective optics, the amount of distortion in your Night Owl Optics
Night Vision device is less then the distortion found in other Night Vision devices.
Typical Image Appearance
Use of the Infrared Illuminator in a closed room, or at close range, will exaggerate the light and
dark spots on the Electronic Intensifier Tube. The Infrared Illuminator, although invisible to
human and animal eyes, is very bright at close range when viewed through the device. This
bright light exaggerates the spots on the Electronic Intensifier Tube. Testing your Night Vision
device indoors with the Infrared Illuminator, at close range, is not representative of the
performance of the device in its intended outdoor application.
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