Ring of light laser optics system
This patent describes a laser optics system for generating a ring-shaped beam of electromagnetic radiation for use in contouring and severing a lens-shaped article having a curved surface from a workpiece. The system consists essentially: A. a focusing element for receiving a circular beam of electromagnetic radiation from an appropriate laser source and transforming the beam into a ring-shaped beam of electromagnetic radiation. The element has two opposed surfaces wherein one of the surfaces is a convex lens surface and the opposite surface is a conical surface which forms an axicon. The element is situated in the path of and concentric with the central long axis of the circular beam such that the circular beam enters the convex surface and the ring-shaped beam concentric with circular beam emerging from the axicon surface is received by, B. a reflective element having a conical reflective surface situated at such an angle and situated in such a position relative to the central long axis of the ring-shaped beam to cause a ring-shaped beam of a preselected diameter to impinge upon a curved workpiece surface.
- Assignee:
- Dow Corning Corp., Midland, MI
- Patent Number(s):
- US 4623776
- OSTI ID:
- 6967850
- Resource Relation:
- Patent File Date: Filed date 3 Jan 1985
- Country of Publication:
- United States
- Language:
- English
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