Beam guiding optical system for laser radiation

Details Beam guiding optical system for laser radiation Beam guiding optical system for laser radiation

1988-01-13

1989-03-14

Albritton, C. L.

Electric heating

Metal heating

By arc

1283031, 350620, B23K 2606

Patent

active

048126136

ABSTRACT:
A beam guiding optical system for laser radiation, especially for the radiation of a medical laser, for the continuous adjustment of focal length is described, which is distinguished by the fact that aberrations are largely prevented. The beam guiding optical system preferably has a linearly movable carriage with at least two carriage mirrors disposed fixedly with respect to one another, at least one of these carriage mirrors being concavely or convexly curved, and the beam axis of the entry beam falling on a mirror being parallel to the beam axis of the beam emerging from the adjusting means. The axis of displacement of the carriage is aligned parallel to the beam axis of the entry and emerging beam. In the beam path outside of the adjusting means there is disposed at least one deflecting mirror which has a curvature complementary to the curvature of the at least one curved carriage mirror. These mirrors are surface elements of solids of rotation of cone sections, which are aligned with one another such that the corresponding focal points of the at least one deflecting mirror in the beam path outside of the adjusting means lie in the plane which is spanned by the incident and reflected beam of the aforesaid at least one deflecting mirror.

REFERENCES:
patent: 3986767 (1976-10-01), Rexer et al.
patent: 4192573 (1980-03-01), Brown, Jr.

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