Ring of light laser optics system

Details Ring of light laser optics system Ring of light laser optics system

B - Operations, Transporting

23

K

88/96, 327/1.1

B23K 26/00 (2006.01) B23K 26/073 (2006.01) B29D 11/00 (2006.01)

Patent

CA 1245296

RING OF LIGHT LASER OPTICS SYSTEM Abstract This invention provides a simplified laser optics system for generating a ring-shaped beam of laser radiation which is used for contouring and severing a curved, particularly a dome-shaped, article such as a silicone elastomer contact lens from a workpiece. The laser optics system consists essentially of a focusing element having a convex surface which receives a circular beam of laser radiation and an opposed conical surface forming an axicon which element transforms the circular beam into a ring- shaped beam of laser radiation. The ring-shaped beam is received by a reflective element having a conical reflective surface which causes the beam to impinge upon the curved workpiece surface, preferably at an angle which is substantially perpendicular to the workpiece surface, to accomplish edge contouring and severing of the article from the workpiece.

497464

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