Luna Optics LN-PB5 - Manual (Page 5)

INSTALLING THE BATTERIES:
Your night vision unit operates on two 1.5V N-size
batteries, also known as LR1 type.
To install the batteries, remove the battery
compartment cover (6), located in the back of the unit
by turning it counter-clockwise. Install the batteries
according to the polarity diagram indicated next to the
compartment. Once the batteries are inside, replace
the cover.
TURNING THE UNIT ON AND OFF:
Your night vision unit has one-touch push-buttons. To
turn the unit ON, first remove the objective lens
covers (ONLY IN THE DARK!) and press the power
button (5) until the little red light indicator located
next to the battery compartment lights up. Look
through the oculars (7) – you should see the green
glow. Even if the image is not yet sharp, the unit is
operating. To turn the unit OFF, press the power
button again and make sure the red light indicator is
off. The green glow will continue for up to several
minutes, depending on the outside light conditions.
This is normal. Always replace the objective lens
covers after the unit is turned off and no longer is in
use.
FOCUSING THE UNIT:
To obtain the sharp image, you must first rotate each
ocular (7) in either direction, until you notice in which
position the image is at its best. After that, rotate
each objective lens (3) also until the image is at its
best. We recommend adjusting one eye at a time,
while closing the second eye. You may have to repeat
the process again, until the image is sharp and clear.
Once the clear image is obtained, you no longer need
to adjust the oculars, just rotate the front objective
lenses to adjust the distance to the object you are
viewing.