Patent ID: 8898915

Claim:
A twin-beam laser module, comprising a housing having a first cylindrical space and a second cylindrical space, which are adjacent and parallel in axial direction to each other; a first laser assembly directly secured inside the first cylindrical space to output a first laser beam; an outer cylindrical casing positioned inside the second cylindrical space; a second laser assembly provided inside the outer cylindrical casing to output a second laser beam, and including a second lens, and with a laser device disposed at a rear end of the outer cylindrical casing and outputting the second laser beam; and an adjustment apparatus that adjusts the orientation of the outer cylindrical casing so as to align the first laser beam and the second laser beam to be parallel to each other, wherein the second cylindrical space of the housing has a plurality of first adjustment holes and the outer cylindrical casino has a plurality of second adjustment holes which correspond to and are aligned with the plurality of first adjustment holes, wherein the adjustment apparatus includes a plurality of adjustment pieces, each of which is inserted into one aligned set of first adjustment hole and second adjustment hole to adjust the axial displacements of x-, y-, and z-directions of the second laser assembly, thereby adjusting the second laser beam so that the second laser beam is projected in parallel with the first laser beam.