10
utilizing a Night Vision Device for observation or
navigation purposes.
Depth Perception
Night Vision does not present normal depth
perception. Use extreme caution when using a
Night Vision Device where reliance upon depth
perception is important.
Fog and Rain
Night Vision Devices are very responsive to
refl ected ambient light; therefore, fog or heavy
rain can refl ect too much light toward the Night
Vision Device and may seriously degrade its
performance.
Honeycomb
This is a faint hexagonal pattern throughout
the image area. This effect is more noticeable
under high light conditions. Do not be concerned
- the honeycomb effect is an inherent character-
istic of all high-amplifi cation night vision systems
that incorporate a microchannel plate in the
intensifi er.
Black Spots
These are cosmetic blemishes in the image
intensifi er. They do not affect the performance
or reliability of a night vision device and a num-
ber of sizes are inherent in the manufacturing
process.
Image Intensifi er Life
Night Vision Devices are designed to be robust.
The image intensifi er tube, however, does not
have an unlimited lifetime. The life of the image
intensifi er is dependent upon the amount of
use. Under normal operating conditions, it will
provide reliable performance for an extended
period of time.
MAINTENANCE
Optics
Always clean the optics with a suitable optical
cleaning cloth. Do not use detergents or exces-
sive moisture to clean any part of the Night Vi-
sion Device.
Battery/Battery Compartment
Any Night Vision Device that is to be stored for a
long or undetermined amount of time must have
the batteries removed.
