NIGHT VIEWING DEVICE Russian patent published in 2001 - IPC

FIELD: opticoelectronic equipment. SUBSTANCE: invention can find use in night viewing devices with opticoelectronic converters and piezoelements. Proposed night viewing device includes lens, opticoelectronic converter, eye-piece, power supply unit with piezoelement whose butts are linked to opticoelectronic converter and pressure fixture with lever designed to act on butt of piezoelement. In contrast to known devices butt of piezoelement having positive potential when compressed in given device is connected to photocathode and butt of piezoelement having negative potential when compressed is linked to anode of opticoelectronic converter. In correspondence with another version device is supplemented with element coming in the form of diode that blocks positive voltage half-wave. Mechanical pressure fixture is manufactured in the form of bracket with two rigid rests between which piezoelement is mounted in thrust bearings. Fixture includes rollers put in grooves of bracket on side of first rest for mutual rolling, compression regulator installed in second rest. Lever is provided with through longitudinal grooves and is suspended from rollers passed outward through its grooves. Viewing condition is realized while lever of pressure fixture is not held under pressure. EFFECT: avoidance of necessity for operator to hold lever of pressure fixture of device compressed in process of viewing, convenient adjustment and operation, diminished overall dimensions of device. 3 cl, 2 dwg