LASER DOSIMETER WITH SEMIAUTOMATIC COMPENSATION OF BACKGROUND LIGHT Russian patent published in 1995 - IPC

FIELD: laser technology. SUBSTANCE: laser dosimeter has photodetector 1, bias voltage source 2, integrating RC-circuit 3, voltage amplifier 4, memory unit 5, the first comparator 7, memory unit 7, memorizing capacitor 8, the first voltage follower 9, registrar 10, the first rejection switch 11, compensating voltage source 12, switch 13, the third RC-circuit 14, the second voltage follower 15, the second rejection switch 16, the second integrating RC-circuit 17, the second comparator 18, differentiating RC-circuit 19, one-shot multivibrator 20, the first RC-circuit 21 with corresponding couplings. EFFECT: improved efficiency of operation. 1 dwg