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Congratulations on the purchase of your Bushnell  Night
Vision Product. Bushnell Night Vision products are comprised
of high quality image intensifier tubes and optics. Bushnell
Night Vision products amplify existing light, allowing you to
see in dark conditions too dark for the naked eye.

HOW NIGHT VISION WORKS

Bushnell Night Vision products collect and amplify existing light
through the objective lens, which is then focused on the image
intensifier. Inside the intensifier, a photocathode is "excited" by the
light and converts the photon energy into electrons. These electrons
accelerate across an electrostatic field inside the intensifier and strike
a phosphor screen (like a green monochrome TV screen) which emits
an image that you can see. It is the acceleration of electrons, which
provides gain and enhances the image. This is a Generation I device. 

GETTING STARTED

Installing Batteries

• With  a  screwdriver,  unscrew  the

battery compartment cover.

• Insert  two  AA  batteries  into  the

compartment according to the + and
–  markings on the cover.

• Replace the battery compartment cover.

Installing The Illuminator

• Your  Bushnell  Night  Vision  product

includes 

an 

infrared 

illuminator.

This  allows  you  to  see  in  complete
darkness when no ambient light source
is available.

• Remove  the  black  cover  from  the

accessory  illuminator  attachment  on
the scope.

• Gently  slide  the  Illuminator  on  the

accessory iIlluminator attachment facing
forward (toward the Objective Lens).

• Remove the lens cap from the Illuminator.

• Adjust  the  beam  of  the  Illuminator  to  focus  on  the  object

under observation.

Using The Power Button And Illuminator

Never turn the scope on in daylight conditions with the lens cap
off.

The pinhole  in the lens cap allows you to test the scope in

daylight conditions. (The lens cap for model 26-4366 does not
contain a pinhole).

• Model  26-4366  includes  a  special

Aperture Setting Control feature. This
allows  the  user  to  reduce  the
brightness of the image by adjusting
the Brightness Control Ring. Therefore,
the user can use model 26-4366  in
daylight conditions with the lens cap
off as long as the brightness control is
at the lowest setting.

• To use the scope and Illuminator, depress and 

h o l d

the Power Button.

• After you release the Power Button, the image will slowly fade out.

This is normal and is not a defect.

To Focus

• First, turn the Objective Lens  Focusing

Ring to infinity. (Full clockwise as
shown in the drawing).

• While looking at a distant object (at

least  36  ft.  away),  adjust  the
Eyepiece  Focusing  Ring  for  the
sharpest image.

• Once  the  Eyepiece  Focusing  Ring

is adjusted, you need only adjust
the  Objective  Lens  Focusing  Ring
as needed.

Spots In The Image

• You may see spots in the image. These vary from scope to scope and

are cosmetic blemishes inside the scope. These are normal for Night
Vision Scopes and are 

NOT

a defect.

TROUBLESHOOTING

Scope will not turn on.

Check that the batteries are installed properly. Replace the batteries
with new ones. Check the battery contacts to ensure they are clean
and free of corrosion. Press and hold the power button firmly
and completely.

Image is not focused.

Adjust the focus on the Focusing Eyepiece. Adjust the Objective Lens
Focusing Ring. For a focused image, you must be a certain distance
from the object you are viewing. Refer to the following chart for the
recommended minimum viewing range. If still no improvement, clean
the lenses; they may be foggy or dusty. (See 

To Focus

).

Model

Magnification

Objective Size

Viewing Range (ft.)

26-2429               2.4x                     29mm                   1.1 - 300

26-3652               3.6x                     52mm                   12 - 350

26-4366               4.3x                     66mm                   16 - 450

Visibility decreases or disappears.

Bright light sources such as headlights may cause visibility to degrade
or disappear completely. Release the Power Button and turn the
scope away from the light source. The unit will restore itself in 1 or 2
minutes. Conditions such as fog or extremely dark environments will
decrease visibility.

Scope flashes.

The scope may flash when used in a bright environment. It may also
flash during the first few seconds of use in dark environments.

Illuminator

Accessory

Illuminator

Attachment

Adjust

Illuminator

Power Button

Set Objective Lens
Focusing Ring to
i n f i n i t y. (Tu rn
clockwise all the
w a y )

Adjust Eyepiece
Focusing Ring

Flathead

Screwdriver

NIGHT VISION

I N S T R U C T I O N S

Lit. #:  06-2000/03-01

Continued on page 2

26-2429 (2.4 x 29)
26-3652 (3.6 x 52)
26-4366 (4.3 x 66)

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