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NVS 6
MANUAL
Page 8
5 DESIGN OF UNIT AND ITS COMPONENTS
5.1 The NVS 6 is essentially a passive-type optoelectronic night-
vision device whose principle of operation is based on the intensification
of image brightness of objects being viewed with the aid of image-
intensifier tubes.
5.2 The NVS 6 design employs a binocular pattern, i.e. it consists
of two identical optoelectronic channels (of monocular type) which afford
stereoscopic vision to create comfortable conditions for napping off the
earth, thus enabling the pilot to evaluate the space depth and ensure
higher night flight safety.
5.3 The general view of the NVS 6 is illustrated in Fig. 5.1.
5.3.1 Lenses (1) may be focused either relative to distant objects
located in the space outside the cockpit, or relative to the objects located
close to the helicopter. The focus is adjusted by rotating the lenses.
5.3.2 The dioptric focusing of eyepieces (2) is carried out
individually for each sight channel of the unit by rotating eyepieces with
the aid of focusing rings (3).
5.3.3 The independent power source (IPS) is arranged inside
guide (4), which is closed with cap-switch (5).
5.3.4 The NVS 6 is installed onto the pilot’s helmet by attachment of
fixing assembly (6) of the unit to mount (7), which is then secured to
helmet casing (8).
The fixing assembly makes it possible to perform individual
adjustment, so as to provide the most comfortable position of the goggles
mounted on the helmet relative to the pilot’s eyes. This feature enables
the pilot to move the goggles away from the eyes, tilt the optical axes of
monocular pair and displace them upwards and downwards.