14
15
14
15
Adjustable Features
(continued)
Lens Specifications are as follows:
Minimal Focal Distance: 16” (41cm)
Maximum Focal Distance: infinity.
Ability to see objects at a distance depends on object size and ambient light conditions.
Angle of View: 12°
Field of View: 70’at 330’ distance (21 meters at 70 meter distance)
Magnification: 2.6 times
3. Infrared Emitter
You cannot adjust the intensity or light angle of the infrared emitter. The emitter casts a 12°
angle of light, equal to that of the iGen
®
’s angle of view. Because the emitter is positioned
to the side of the objective lens, at short distances you will notice a shadow due to this
offset. The infrared produces a round beam of light; at close distance, the circle of light will
clip the corners of the rectangular display. At very close range, you may see a half-circle of
bright light, while the rest of the scene is darker. You cannot control the intensity of the
infrared light, other than to set it in automatic mode. In automatic mode, the output of the
emitter is adjusted to provide the correct amount of infrared required for optimum
illumination. Since the device is very sensitive to infrared light, high intensity infrared at close
range causes the device to reduce internal gain and increase exposure time. Use of the IR
MAX settings is only recommended in a very dark outdoor environment.
Adjustable Features
(continued)
Lens Specifications are as follows:
Minimal Focal Distance: 16” (41cm)
Maximum Focal Distance: infinity.
Ability to see objects at a distance depends on object size and ambient light conditions.
Angle of View: 12°
Field of View: 70’at 330’ distance (21 meters at 70 meter distance)
Magnification: 2.6 times
3. Infrared Emitter
You cannot adjust the intensity or light angle of the infrared emitter. The emitter casts a 12°
angle of light, equal to that of the iGen
®
’s angle of view. Because the emitter is positioned
to the side of the objective lens, at short distances you will notice a shadow due to this
offset. The infrared produces a round beam of light; at close distance, the circle of light will
clip the corners of the rectangular display. At very close range, you may see a half-circle of
bright light, while the rest of the scene is darker. You cannot control the intensity of the
infrared light, other than to set it in automatic mode. In automatic mode, the output of the
emitter is adjusted to provide the correct amount of infrared required for optimum
illumination. Since the device is very sensitive to infrared light, high intensity infrared at close
range causes the device to reduce internal gain and increase exposure time. Use of the IR
MAX settings is only recommended in a very dark outdoor environment.
Adjustable Features
1. Eyepiece
(technically referred to as the diopter focal lens in front of the microdisplay)
The iGen
®
has two different focus adjustments. The eyepiece lens adjusts to focus the
display to your individual eyesight. The objective lens focuses on objects in the distance.
To adjust the eyepiece, do the following:
a. Push up on the three-way switch located on the bottom.
b. The menu will appear. Use this menu as a target to focus the eye piece.
c. Rotate the eyepiece rubber cup until the menu letters are sharp and in focus.
If the menu disappears, push up again to see the menu again.
d. Use the menu as a focusing target. This adjustment focuses your individual
eye sight on to the display screen.
e.
After the eyepiece focus is adjusted, do not change this adjustment, even if
the image is out of focus. After you set the eyepiece adjustment, use the
objective (front) lens to focus on objects in the distance.
2. Objective Lens
(large lens in metal housing on front of device)
This lens must be manually rotated to bring objects into focus. As you aim at different
objects at different distances, you may need to rotate the lens to bring the objects into
focus. This operates just like a pair of binoculars.
Adjustable Features
1. Eyepiece
(technically referred to as the diopter focal lens in front of the microdisplay)
The iGen
®
has two different focus adjustments. The eyepiece lens adjusts to focus the
display to your individual eyesight. The objective lens focuses on objects in the distance.
To adjust the eyepiece, do the following:
a. Push up on the three-way switch located on the bottom.
b. The menu will appear. Use this menu as a target to focus the eye piece.
c. Rotate the eyepiece rubber cup until the menu letters are sharp and in focus.
If the menu disappears, push up again to see the menu again.
d. Use the menu as a focusing target. This adjustment focuses your individual
eye sight on to the display screen.
e.
After the eyepiece focus is adjusted, do not change this adjustment, even if
the image is out of focus. After you set the eyepiece adjustment, use the
objective (front) lens to focus on objects in the distance.
2. Objective Lens
(large lens in metal housing on front of device)
This lens must be manually rotated to bring objects into focus. As you aim at different
objects at different distances, you may need to rotate the lens to bring the objects into
focus. This operates just like a pair of binoculars.
