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成连续变化的光电流,它与被测量间呈单值关系.模拟式光电传感器按被测量（检测目标物体）方法可分为透射（吸收）式,漫反射式,遮光式（光束阻档）三大类.EX-22B/EX-24A/EX-24B/EX-26A/EX-26B/EX-28A/EX-28B/ EX-15E/EX-17E//EX-11A（EX-11AD/EX-11P）/EX-11B（EX-11BD/EX-11P）/EX-13AEX-22B/EX-24A/EX-24B/EX-26A/EX-26B/EX-28A/EX-28B/ EX-15E/EX-17E//EX-11A（EX-11AD/EX-11P）/EX-11B（EX-11BD/EX-11P）/EX-13A所谓透射式是指被测物体放在光路中,恒光源发出的光能量穿过被测物,部份被吸收后,透射光投射到光电元件上;所谓漫反射式是指恒光源发出的光投射到被测物上,再从被测物体表面反射后投射到光电元件上;所谓遮光式是指当光源发出的光通量经被测物光遮其中一部份,使投射刭光电元件上的光通量改变,改变的程度与被测物体在光路位置有关. EX-22B/EX-24A/EX-24B/EX-26A/EX-26B/EX-28A/EX-28B/ EX-15E/EX-17E//EX-11A（EX-11AD/EX-11P）/EX-11B（EX-11BD/EX-11P）/EX-13AEX-22B/EX-24A/EX-24B/EX-26A/EX-26B/EX-28A/EX-28B/ EX-15E/EX-17E//EX-11A（EX-11AD/EX-11P）/EX-11B（EX-11BD/EX-11P）/EX-13A
