Patent ID: 7457342
Filing Date: 2008-11-25
Classification: G02B,G03G,H01S

Abstract:
1. A laser device comprising: a laser diode, a flange, a collimator lens, and a holder, wherein the laser diode emits a laser beam; the flange having a plurality of axial guide pins corresponding to axial guide slots on a holder on front end thereof is fastened on a housing of a laser scanning unit; the holder with an inner tube part whose rear end faces the laser diode and the collimator lens is mounted in the front end thereof so that the laser beam passes through the inner tube part of the holder and the collimator lens and then projects out; a radial lug extends from outer surface of the holder is disposed with a plurality of axial guide slots that are parallel with a central axis of the inner tube part of the holder; the diameter of the guide slot is larger than that of the guide pin so that the holder is disposed on the flange by the guide pin on the flange inserting the corresponding guide slot on the holder and a gap between the guide slot and the guide pin is used as space for displacement between the guide slot and the guide pin as well as calibration of the X, Y, and Z axes between the laser diode and the collimator lens; adhesive is filled into the gap between the guide slot and the guide pin and spaced apart from the collimator lens.