The invention relates to the technical field of optical device
coupling and packaging, in particular to a
light spot projection detection type multi-lens
coupling machine which comprises a substrate positioning
assembly, a lens feeding
assembly, a lens clamping and
coupling assembly and a
light spot detection assembly. The
light spot detection assembly comprises a light path control sub-assembly and a projection detection sub-assembly; the light path control sub-assembly comprises a plurality of reflection units, the projection detection sub-assembly comprises a projection box, a first
beam splitter, a light spot detection camera and a detection lens, the first end of the projection box is provided with a projection surface, the light spot detection camera is arranged at the second end of the projection box, and the detection lens is arranged at the second end of the projection box. The first
beam splitter is located between the
projection plane and the light spot detection camera. According to the invention, through the light path control sub-assembly and the projection detection sub-assembly, the propagation
path length of the
collimated light beam and the light spot size are significantly improved, so that the light spot detection precision is significantly improved.