Night Optics Falcon 6x Gen 3 Gated Long-Range Night Vision Binocular User Manual
Page 65
2-30
c.
Cosmetic Blemishes. These are usually the result of
manufacturing imperfections that do not affect image intensifier
reliability and are not normally a cause for rejecting a NVG.
However, some types of blemishes can get worse over time and
interfere with the ability to perform the mission. If you believe a
blemish is cause for rejection, record the specific nature of the
problem on the maintenance forms and identify the position of the
blemish by using the clock method and approximate distance from
the center (e.g., 5 o’clock toward the outside, 2:30 near the center,
or 1:00 midway). The following are cosmetic blemishes:
(1)
Bright Spots. A bright spot is a small, nonuniform, bright
area that may flicker or appear constant (Figure 2-5). Not all bright
spots make the NVG rejectable. Cup your hands over the
objective lens to block out all light. If the bright spot remains,
return the NVG to the maintainer. Bright spots usually go away
when the light is blocked out. Make sure any bright spot is not
simply a bright area in the scene you are viewing. Bright spots
are acceptable if they do not interfere with the operator's
ability to view the image or to perform the mission.