Armasight NSCCOMINI139DA1 CO-Mini GEN 3+ Alpha MG Night Vision Mini Clip-On System - Manual (Page 11)

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DESCRIPTION AND DATA
2.1 SYSTEM DESCRIPTION
The CO-MINI consists of two primary parts: the night vision device (hereafter referred to as “NVD”), and
the quick-release mount, or mount. The CO-MINI is delivered as shown in Figure 2-1: the mount (A) and
top Weaver rail (B) should be secured on the NVD seating rails with M4×8 screws.
The optical-electronic system of the NVD includes four main components: the objective and output
lenses, an image intensifier tube, and the body.
The objective lens focuses available light (photons) on the photocathode of the image intensifier tube
(IIT). The light energy causes electrons to be released from the cathode. After being amplified, the
electron flow represents an intensified version of the original image of the scene. The electrons then
strike the IIT phosphor screen, which reacts to them by glow that is visible to the human eye. The im-
age is projected by the output lens from the IIT screen to infinity, and the resulting image is magnified
when viewed through the day scope. As such, when the CO-MINI is mounted in front of the day scope,
it converts the device into a night vision sight.
The automatic brightness adjustment system maintains consistent image brightness, even in changing
light conditions. The manual gain control allows the operator to refine the image contrast by compen-
sating for overly bright or extremely dark conditions.
Additionally, the CO-MINI MG version incorporates gain control, which allows the user to increase or
decrease 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 IIT automatically when the illumination level exceeds the limit of 100-150 lx within 10 sec-
onds. The CO-MINI turns back on when removed from the excessively lit environment.
FIGURE 2-1. CO-MINI NIGHT VISION CLIP-ON DEVICE AS DELIVERED
B
A