Speckle projection module and depth camera

The utility model provides a speckle projection module and a depth camera, and relates to the technical field of optical projection. The speckle projection module is used for projecting speckle patterning light beams to a target space and comprises a base and a mirror base arranged on the base. The LED array light source is mounted on the base and comprises a plurality of LED sub light sources arranged in an area array; the diffractive optical element is installed on the mirror base and comprises a plurality of active areas corresponding to the LED sub light sources, and the active areas are used for receiving light beams emitted by the LED sub light sources and then projecting sub speckle patterning light beams to a target space; and the plurality of sub-speckle patterned light beams form a speckle patterned light beam in an overlapping or adjacent splicing mode. The speckle projection module can project speckle patterned light beams which are more friendly to human eyes into the space, is simple in structur