SCANNING DEVICE Russian patent published in 1996 - IPC

FIELD: optical electronic instruments. SUBSTANCE: scanning trajectory parameter setter 1 generates signals that are proportional to minimal possible scanning radius ρ_min, maximal possible scanning radius ρ_max, scanning step a, initial scanning radius ρ_oo, linear scanning speed v_o. Signals that are proportional to polar angle ρ and radius v are generated by means of third multiplier 2, first and second adders 3 and 6, first and second squarers 4 and 5, square root computing unit 7, dividing unit 8, integrator 9, inverter 10, electronic gate 11. Said signals are converted to voltage levels by means of sine function generator 12 and cosine function generator 13, first and second multipliers 14 and 15. Resulted voltage levels control drives 16 and 17, which implements turn of optical axis of lens 21 along spiral trajectory providing constant linear speed and scanning step in arbitrary point of scanning field. Device can be used for investigation of sun, planets and technical objects such as photographic plates, heated bodies, etc. EFFECT: increased precision of scanning having constant linear speed and scanning step. 2 dwg