Laser module for projection

A laser module for projection provided by the present invention comprises a heat dissipation substrate and a plurality of laser module assemblies, the upper surface of the heat dissipation substrate is provided with a tube shell, the upper surface of the tube shell is provided with a diaphragm, and the laser module assemblies are respectively arranged on the heat dissipation substrate and the diaphragm. The laser module assembly comprises an orthogonal integrated mirror, a transition heat sink, a laser chip and a polaroid, the orthogonal integrated mirror is arranged on the heat dissipation substrate, and the outer wall of the orthogonal integrated mirror is provided with an inclined part, a first arc-shaped part and a second arc-shaped part; a reflecting film is arranged on the surface of the inclined part, and antireflection films are arranged on the outer walls of the first arc-shaped part and the second arc-shaped part; through combined use of the heat dissipation substrate, the tube shell, the diaphragm