Optical beam expander

Details Optical beam expander Optical beam expander

1994-10-14

1996-11-12

Dzierzynski, Paul M.

Optical: systems and elements

Mirror

Plural mirrors or reflecting surfaces

359226, 359364, 359850, 359853, G02B 2608, G02B 1700, G02B 508, G02B 510

Patent

active

055746012

ABSTRACT:
A beam expander suitable for use with laser machining apparatus comprises a convex paraboloidal surface 7 and a concave paraboloidal surface 8 formed from a single metal element 10. The expander has an optional zoom facility provided by a plane mirror 12, moveable along an input-output axis, for altering the position of an incident beam on the convex surface 7 thereby altering the magnification of the system.

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