Adjustable polarization beam splitter with adjustable splitting ratio

The utility model discloses a beam splitter with adjustable splitting ratio and adjustable polarization, which comprises a front shell, a rear shell and a beam splitting shell, a first wave plate assembly and a second wave plate assembly are respectively arranged in the front shell and the rear shell, the front shell and the rear shell are connected with the beam splitting shell through a rotating assembly, a third wave plate assembly is arranged in a mirror shell, and the third wave plate assembly is connected with the beam splitting shell through a rotating assembly. And a polarization splitting prism is arranged in the beam splitting shell. According to the beam splitter with the adjustable splitting ratio and the adjustable polarization, input light enters from the front shell on the left side and passes through the 1/4 wave plate of the first wave plate assembly, the 1/4 wave plate is rotated, the input light can be switched among linear polarization, elliptic polarization and circular polarization, then