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Multiple laser beam generation

  • US 6,327,090 B1
  • Filed: 10/10/2000
  • Issued: 12/04/2001
  • Est. Priority Date: 07/03/1997
  • Status: Expired due to Term
First Claim
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1. A portable self-leveling instrument for producing a plurality of reference light beams on orthogonal and intersecting lines, comprising:

  • a housing with a platform, a diode laser source on the platform, providing a laser beam, a lens on the platform for collimating the beam, and a plurality of reflective surfaces mounted on the platform, positioned obliquely in different portions of the path of the collimated beam so as to reflect the collimated beam to produce a plurality of differently-directed output reference beams, said reflective surfaces including two reflective surfaces each oriented substantially at 45°

    to the beam and in the path of two opposed outer portions of the collimated beam, so as to produce two oppositely directed output reference beams on essentially the same line, and including orthogonal beam means for producing from a middle portion of the collimated beam, an orthogonal additional reference beam on a line which intersects the other two oppositely directed beams and substantially at 90°

    to the other two beams.

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