Armasight NSCCOLR00139DA1 CO-LR GEN 3 Alpha MG Night Vision Long Range Clip-On System - Manual (Page 11)

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2
DESCRIPTION AND DATA
2.1 SYSTEM DESCRIPTION
The CO-LR consists of two primary parts, as shown in Figure 2-1: the night vision device (hereafter
referred to as NVD), and the quick release mount system, or mount. The CO-LR is delivered already as-
sembled: the mount (B) should be secured to the rail (A) of the NVD (D) with two screws.
The optical-electronic system of the NVD includes four main components: the objective and output
lenses, an intensifier tube, and the control compartment (C).
The intensifier tube (IT) amplifies the environment’s ambient light using a photocathode input lens,
which converts light waves and produces a visible image of the scene on the device’s screen. The image
is projected by the output lens to infinity, and the resulting image is magnified when viewed through
the day scope. As such, when the CO-LR is mounted in front of the day scope, it converts the latter into
a night vision sight.
The automatic brightness adjustment system maintains consistent image brightness, even in changing
light conditions.
The CO-LR MG version incorporates manual gain control, which allows the operator to increase or de-
crease the brightness of the image to compensate for overly bright or extremely dark conditions.
The bright light protection system controls the existing ambient light through a photoreceiver, and
cuts off the IT automatically when the illumination level exceeds the limit of 100-150lx within 20 sec-
onds. The CO-LR turns back on when removed from the excessive light.
B
FIGURE 2-1. CO-LR NIGHT VISION CLIP-ON SYSTEM
D
A
C