Lateral shear interferometer

The utility model discloses a lateral shear interferometer, including two half cube of the same roof prism, half cube of roof prism includes prism no. 1 and prism no. 2, prism no. 1 is roof prism, and roof prism includes two right angle faces and an inclined plane, and two right angle faces are the ridge face, prism policy of "literature and art should serve both people and socialism" rectangular prism, rectangular prism include right angle face no. 1 and right angle face no. 2, the inclined plane setting of prism no. 1 is on right angle face no. 1, and the inclined plane of prism no. 2 is a beam splitting face, one and half cubes of roof prism's right angle face policy of "literature and art should serve both people and socialism" incident surface, another half cube of roof prism's right angle face policy of "literature and art should serve both people and socialism" emitting face. The utility model discloses mutual vertically main cross section has, its veneer process alignment orientation and lateral shear orientation not in a plane, the production remain the error that the alignment error can not the volume of bringing the shearing, therefore can make things convenient for the adjustment of the veneer of accurately realizing the interferometer and shearing volume.