초록 ▼

Efficient and cost-effective generation of two co-linear laser beams or two or more intersecting beams, for the purpose of alignment as in the construction industry, takes advantage of the unequal divergence of light from a typical laser diode that produces a beam of elliptical cross section. Two ro

Efficient and cost-effective generation of two co-linear laser beams or two or more intersecting beams, for the purpose of alignment as in the construction industry, takes advantage of the unequal divergence of light from a typical laser diode that produces a beam of elliptical cross section. Two roughly equal co-linear beams of light, or two or more intersecting beams, can be generated by reflecting the collimated elliptical beam from preferably two mirror surfaces oriented obliquely to the beam and so as to divide the elliptical beam in two. If one of the reflective surfaces is a beam splitter, three essentially intersecting beams can be generated. In preferred embodiments these three beams are at right angles to each other, particularly for use in construction layout.

대표청구항 ▼

A system producing a plurality of essentially intersecting light beams, comprising: a diode laser source providing a beam which diverges at two substantially different rates on two perpendicular beam axes, lens means for converting the diverging beam into a substantially collimated beam of substanti

A system producing a plurality of essentially intersecting light beams, comprising: a diode laser source providing a beam which diverges at two substantially different rates on two perpendicular beam axes, lens means for converting the diverging beam into a substantially collimated beam of substantially different dimensions on the two axes, a greater dimension on a long axis and a smaller dimension on a short axis, at least one reflective surface positioned in the path of the substantially collimated beam obliquely to the path of the beam, said reflective surface having an edge which is positioned to divide the substantially collimated beam through its greater dimension to reflect only a portion of the beam from the reflective surface, thereby producing two beams of light, in different directions.