Focusing a laser beam

Details Focusing a laser beam Focusing a laser beam

2008-03-04

2008-03-04

Hasan, M. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S705000, C359S744000

Reexamination Certificate

active

07339750

ABSTRACT:
A device for focusing a laser beam includes a first telescopic configuration and a second telescopic configuration. The first telescopic configuration includes a collimating optical element for collimating the laser beam and a downstream focusing optical element for focusing the laser beam onto a focal point. The second telescopic configuration includes a first lens and a downstream second lens disposed in the divergent beam path upstream of the first telescopic configuration. The first and second lenses of the second telescopic configuration are moveable relative to each other in the beam direction.

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