本专利介绍一种与光电子学特别是红外滤波有关的装置。其目的是控制中红外范围的输出强度。该滤波器的偏正器(1)和检偏正器(3)位于保护性磁芯和绕组(4,6)的两侧。磁激活元件(2)放在通道中央,并受线圈电流输入的磁效应的作用。磁激活元件是一种磁性半导体尖晶石, This patent describes a device related to optoelectronics, especially infrared filtering. Its purpose is to control the output intensity in the mid-infrared range. The filter’s skewer (1) and the skew detector (3) are located on both sides of the protective core and windings (4,6). The magnetic activation element (2) is placed in the center of the channel and is subjected to the magnetic effect of the coil current input. The magnetic activation element is a magnetic semiconductor spinel,