Multiple laser beam generation

Details Multiple laser beam generation Multiple laser beam generation

1999-11-12

2000-11-28

Mai, Huy

Optical: systems and elements

Single channel simultaneously to or from plural channels

359636, 430 5, G02B 2710

Patent

active

061543195

ABSTRACT:
A system which is preferably employed in a laser alignment instrument produces up to five orthogonal beams from a single laser diode beam. In one embodiment the optics take advantage of the elliptical shape of the beam from a laser diode which when collimated produces a plurality of orthogonal beams by reflection off a plurality of 45.degree.-angled reflective surfaces intercepting outer portions of the beam. In one preferred embodiment a solid reflective element was four 45.degree.-angled facets to produce four beams from outer portions of a preferably non-elliptical beam, and a fifth orthogonal beam is produced by transmission of a central portion of the beam through the element. The element can be solid glass, or it can be glass or other material with a central hole.

REFERENCES:
patent: 2422376 (1947-06-01), Turner et al.
patent: 3488104 (1970-01-01), Doherty
patent: 4283115 (1981-08-01), Fraissl
patent: 5500524 (1996-03-01), Rando
patent: 5617202 (1997-04-01), Rando
patent: 6005716 (1999-12-01), Ligtenberg et al.

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