Miniature infrared (IR) viewer SM-3R
The SM-3R is a miniature infrared viewer that fits comfortably in the palm of a hand or on a face-mask for hands free operation. This viewer is suitable when size and weight are more important.
IR viewer is based on a first generation high-grade image converter that has an electro-static focusing system, photocathode S-1+ with increased concentration of oxygen and screen of type P-20 with maximum of luminescence at 550 nm.
Infrared viewer focus emitted or reflected light from a chosen subject into the image tube where electron image is generated. When powered (with battery or power supply) the 16-18 kV voltage is generated required to accelerate the electron image into the output phosphor screen. The fluorescent green light output (550 nm) is observed via an adjustable eyepiece lens.
|Miniature IR-viewer SM-3R series specifications|
|Resolution (centre)||50 Lp/mm|
|Working distance of lens||12.5 (+/-0.2) mm|
|Battery||2xLR44 or CR1/3N|
|Non-uniformity of screen||<20%|
|Non-uniformity of response||<15%|
|Distortion of image||<18%|
|Battery life (continuous)||10 hours (up to 100 hours with AAA batteries adapter)|
|External power supply||-|
|Tripod or handle connection||R”1/4″|