Anamorphic laser beam correction optics

Details Anamorphic laser beam correction optics Anamorphic laser beam correction optics

1985-10-18

1989-05-09

Kyle, Deborah L.

350286, G02B 1310

Patent

active

048283711

ABSTRACT:
Correction of the ellipticity of a diode laser beam is achieved by an anamorphic beam expansion prism pair that are separated by an angularly rotationally adjustable mirror. The first prism of the prism pair is rotationally adjustable to various detent positions about a first axis and is translatable to various detent positions along a second axis, while the second prism has a fixed position. The first prism provides some beam expansion and the second prism provides the remainder of the beam expansion. The amount of beam expansion by the first prism is varied by adjustment of its rotation and translation, yet the expanded beam from the first prism exhibits zero positional offset at the location of the rotatable mirror. The mirror is rotated such that the optical axis between the mirror and the second prism is the same for all cases of beam expansion.

REFERENCES:
patent: 3871750 (1975-03-01), Mecklenborg

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