Lateral displacement polarization beamsplitter is made up of a right angle prism and the waveplateand an oblique prism glued together. When a beam of light passes through it, two parallel beams of light are produced, and the lateral displacement of these two beams of light can be controlled by adjusting the length of the oblique prism. It can also be used in reverse to merge two parallel beams of light into one beam of light.By adjusting the waveplate attached to the surface of the emitted or incident light, the polarization states of the incident and outgoing light can be adjusted