Wide-wavelength infrared super-structure beam splitter device

The invention discloses a wide-wavelength infrared super-structure beam splitter device which comprises a telescopic assembly, a laser, a collimating element, a beam splitter, a static reflector assembly, a movable reflector assembly, a convergence element and a detector assembly. Wherein a target optical signal reaches the laser through the telescopic assembly, the laser performs laser checking on the target optical signal to obtain calibration light, the calibration light is collimated by the collimating element to obtain collimated light, and the collimated light is divided into a path of reflected light and a path of transmission light through the beam splitter; the reflected light is reflected by the static reflector assembly, passes through the beam splitter and is converged by the convergence element to obtain first convergent light; the transmission light is reflected by the movable reflector assembly, then is reflected by the beam splitter and then is converged by the convergence element to obtain se