DRIVER'S PASSIVE NIGHT PERISCOPE FOR T-55 TANK

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The equipment is used by the Driver of T-55. A pair of black head out lamps is also provided with this equipment for mounting externally on the tank for use under adverse condition of ambient illumination and terrain.

SYSTEM SPECIFICATIONS :

Magnification 0.9 ± 0.1 Field of View Horizontal 45° ± 1° Vertical 18° ± 1°

OBJECTIVE :

Entrance pupil dia 50 mm f-number f/1.2 Effective focal length 59.96 mm

EYE PIECE :

Type Fixed focal Binocular Effective focal length 45.8 mm

IMAGE INTENSIFIER TUBE :

Micro channel image intensifier inverter tube xx 1332 or equivalent. Resolution (at the centre) 1.5 milliradian under starlight conditions (10-3 lux). Using USAF-1951 Bar target resolution chart of Low Contrast Ratio 1.6 : 1(D-0.20).

Power Supply :

Type DC - DC Converter Input 22 - 30V DC (From Tank supply) Output 7.2 ± 0.1V DC Ripple 3% Weight 6.5 Kgs

Dimensions :

Height 380mm Width 155mm Depth 135mm Range 100 M for 'B' type vehicles

Environmental specifications :

Operating Temperature - 30° to + 50°C Storage Temperature Recommended + 20°C

Contact :

Marketing & Export Division Ordnance Factory Board Ayudh Bhawan Government of India Ministry of Defence 10A, S. K. Bose Road, Kolkata – 700 001, India. Tel: 0091-33-2248 9027 / 2248 2103 / 2248 5077-80 Fax : 0091-33-2248 1748/2210 8235 Mail : ofbtrade@dataone.in www.ofb.gov.in