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Title:
LASER MARKING DEVICE
Document Type and Number:
Japanese Patent JPH0631654
Kind Code:
A
Abstract:

PURPOSE: To simplify adjusting work by using a laser oscillator of unstable type, and providing a work position adjusting means for moving a workpiece along an optical axis of laser beam, in a laser marking device for making a printing pattern.

CONSTITUTION: Laser beam L emitted from an excimer laser transmitter 1 of unstable type is condensed by a condenser lens 3 through a mask 2 of drilling holes of required printing pattern provided on an optical path, to perform making of the printing pattern by applying the beam onto a workpiece 4. By using this excimer laser oscillator 1 of unstable type, a degree of diffraction, when the laser beam L passes through the mask 2, is decreased. A work position adjusting means 8 is provided in a casing 7, to adjust a work position of the workpiece 4. By this constitution, the laser beam of permeating the mask is placed in a condition near a plane wave, and the work position of the workpiece can be adjusted without depending on an imaging formula, so that position adjusting the workpiece 4 is only required by the adjusting means 8 at the time of changing size of the printing pattern.


Inventors:
UEDA KOJI
OTSUBO SHIGERU
NISHIDE NAOKI
MIYAMOTO FUMIHIKO
Application Number:
JP1992000207123
Publication Date:
February 08, 1994
Filing Date:
July 10, 1992
Export Citation:
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Assignee:
SHIBUYA KOGYO CO LTD
International Classes:
B25H7/04; B23K26/00; (IPC1-7): B25H7/04
Domestic Patent References:
JPH03258481A1991-11-18
JPS6360092A1988-03-16
Attorney, Agent or Firm:
神崎 真一郎