LASER SCANNER Russian patent published in 1995 - IPC

FIELD: character and graphics display. SUBSTANCE: laser scanner has at least one laser cathode-ray tube incorporating evacuated envelope 1, active part 2 with blind and output mirrors, and active part cooling system incorporating compressor and cooling agent; cooling system is essentially closed-circuit loop through which coolant mixture circulates; it has compressor 13 and additionally introduced terminal cooler 14 and throttling heat-transfer unit 16 with evaporating heat exchanger 18, all arranged in tandem; case of evaporating heat exchanger 18 is in direct contact with active part surface on blind mirror side; throttling heat-transfer unit 16 has heat insulating shell. EFFECT: enlarged functional capabilities. 5 cl, 2 dwg