Method of Aligning a Laser With Beam-Folding Mirrors in an Optical Scanner
Original Publication Date: 1988-Jan-01
Included in the Prior Art Database: 2005-Feb-14
This article describes an apparatus for aligning a laser with beam- folding mirrors in an optical scanner. Rather than adjust the mirrors to establish a desired beam path, the beam-folding mirrors are mounted in fixed position while the position of the laser is adjusted using dual eccentric collets. Referring to Fig. 1, a laser 10 is retained by front and rear collets 12 and 14, respectively. The collets 12 and 14 are mounted in journal blocks 16 and 18 which are secured to a baseplate 20. The baseplate 20 also supports a precision beam-folding mirror assembly which is accurately placed on the baseplate 10 using techniques such as guide pins and complementary holes. The assembly 22 has a first beam- folding mirror 24 which bends the beam 26 produced by laser 10 at right angles.