Grating surface type diffraction wavefront multifunctional clamping test device

The utility model discloses a grating surface type diffraction wavefront multifunctional clamping test device which comprises a base station, the top of the base station is provided with a clamping assembly used for fixing a grating sheet to be tested, and the bottom of the base station is provided with a connecting part used for being connected with a workbench. The connecting part is provided with a horizontal adjusting assembly used for adjusting the horizontal steering angle of the base table and a longitudinal adjusting assembly. The clamping assembly is composed of multiple groups of clamping blocks, and the multiple groups of clamping blocks are arranged on the base table in a sliding mode and used for clamping and fixing the multi-point positions of the edge of the grating piece to be tested. The device is convenient to use, and can effectively meet the requirements of operators on test surface types and diffraction wavefronts of grating sheets with different sizes, especially large-size grating sheet