Laser marker and method of light spot adjustment therefor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 25, 2003
Issued Date -
N/A
app pub date -
Feb 18, 2000
filing date -
Sep 29, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A laser marker includes a collimator lens converting laser light emitted from a broad area semiconductor laser into substantially parallel beams of light, a cylindrical concave lens permitting to pass therethrough the laser light having passed through the collimator lens and being perpendicular to a plane of an active layer of the semiconductor laser, the cylindrical concave lens serving as a concave lens for the laser light having passed through the collimator lens and being parallel to the plane of the active layer, a cylindrical convex lens permitting to pass therethrough the laser light having passed through the concave lens and being perpendicular to the plane of the active layer of the semiconductor laser, the cylindrical convex lens serving as a convex lens for the laser light having passed through the collimator lens and being parallel to the plane of the active layer, and a focusing lens focusing the laser light having passed through the cylindrical convex lens.
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