Process for the contact-less removal of material from the surfac

Details Process for the contact-less removal of material from the surfac Process for the contact-less removal of material from the surfac

1985-04-29

1986-08-19

Schor, Kenneth M.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65102, 65105, 65112, 219121LJ, 219121LP, 219121LT, C03C 2300, C03B 1900, B23K 900

Patent

active

046067477

ABSTRACT:
Described is a process for the contact-less removal of material from the surface of an article of brittle material, in particular glass, by means of a laser beam. So that material can be removed, with sharp edges, without splintering, and also in order to permit non-sharp surfaces, the invention provides that the laser beam (1) is passed through at least one at least partially absorbent matrix (7) and split into a plurality of individual beams (1'). By that means, the energy available in the laser beam is split up, in the beam cross-section, and the individual beams can be adapted to a desired removal effect. The apparatus for carrying out the process is characterized in that the matrix (7) has straight and/or curved fields (8, 9) with preferably a high absorption capability in respect of laser beams.

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Grimm, M. A., IBM Technical Disclosure Bull. vol. 14, No. 9, 2/1972; "Optical System for Laser Machining of Narrow Slots"; pp. 1 and 2.

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