德國施克@施克光電開關(guān)
SICK傳感器是采用光電元件作為檢測元件的傳感器。它首先把被測量的變化轉(zhuǎn)換成光信號的變化，然后借助光電元件進一步將光信號轉(zhuǎn)換成電信號。光電傳感器一般由光源、光學通路和光電元件三部分組成。由光通量對光電元件的作用原理不同所制成的光學測控系統(tǒng)是多種多樣的,按光電元件（光學測控系統(tǒng)）輸出量性質(zhì)可分二類,即模擬式光電傳感器和脈沖（開關(guān)）式光電傳感器.模擬式光電傳感器是將被測量轉(zhuǎn)換 光電傳感器成連續(xù)變化的光電流,它與被測量間呈單值關(guān)系.模擬式光電傳感器按被測量（檢測目標物體）方法可分為透射（吸收）式,漫反射式,遮光式（光束阻檔）三大類.所謂透射式是指被測物體放在光路中,恒光源發(fā)出的光能量穿過被測物,部份被吸收后,透射光投射到光電元件上;所謂漫反射式是指恒光源發(fā)出的光投射到被測物上,再從被測物體表面反射后投射到光電元件上;所謂遮光式是指當光源發(fā)出的光通量經(jīng)被測物光遮其中一部份,使投射剄光電元件上的光通量改變,改變的程度與被測物體在光路位置有關(guān). 光敏二極管是zui常見的光傳感器。光敏二極管的外型與一般二極管一樣，只是它的管殼上開有一個嵌著玻璃的窗口，以便于光線射入，為增加受光面積，PN結(jié)的面積做得較大，光敏二極管工作在反向偏置的工作狀態(tài)下，并與負載電阻相串聯(lián)，當無光照時，它與普通二極管一樣，反向電流很小（<µA），稱為光敏二極管的暗電流；當有光照時，載流子被激發(fā)，產(chǎn)生電子-空穴，稱為光電 光電傳感器載流子。
德國施克@施克光電開關(guān)
優(yōu)惠型號：C20E-075304A31, C20S-075204A11 1042148, 1016640 C20E-075303A31, C20S-075203A11 1041573, 1016583 C20E-075302A31, C20S-075202A11 1042141, 1016634 C20E-075304A31, C20S-075104A11 1042148, 1016581 C20E-075303A31, C20S-075103A11 1041573, 1016479 C20E-075302A31, C20S-075102A11 1042141, 1016579 C20E-075303D41, C20S-075103D41 1041586, 1041585 C20E-075304A21, C20S-075204A21 1018100, 1018103 C20E-075303A21, C20S-075203A21 1018098, 1018102 C20E-075302A21, C20S-075202A21 1018096, 1018101 C20E-075304A21, C20S-075104A21 1018100, 1018099 C20E-075303A21, C20S-075103A21 1018098, 1018097 C20E-075302A21, C20S-075102A21 1018096, 1018095 C20E-075304A21, C20S-075204A11 1018100, 1016640 C20E-075303A21, C20S-075203A11 1018098, 1016583 C20E-075302A21, C20S-075202A11 1018096, 1016634 C20E-075304A21, C20S-075104A11 1018100, 1016581 C20E-075303A21, C20S-075103A11 1018098, 1016479 C20E-075302A21, C20S-075102A11 1018096, 1016579 C20E-075304A11, C20S-075204A11 1016582, 1016640 C20E-075303A11, C20S-075203A11 1016480, 1016583 C20E-075302A11, C20S-075202A11 1016580, 1016634 C20E-075304A11, C20S-075104A11 1016582, 1016581 C20E-075303A11, C20S-075103A11 1016480, 1016479 C20E-075302A11, C20S-075102A11 1016580, 1016579
德國施克@施克光電開關(guān)
