Optical: systems and elements – Lens – With support
Patent
1990-05-31
1991-12-31
Sugarman, Scott J.
Optical: systems and elements
Lens
With support
359557, 359819, G02B 702, G02B 2764
Patent
active
050776223
ABSTRACT:
A beam focusing and positioning apparatus provides focusing and positioning the final waist of a gaussian beam at a desired location on a target such as an optical fiber. The apparatus includes a first lens, having a focal plane f.sub.1, disposed in the path of an incoming beam and a second lens, having a focal plane f.sub.2 and being spaced downstream from the first lens by a distance at least equal to f.sub.1 +10f.sub.2, which cooperates with the first lens to focus the final waist of the beam on the target. A rotatable optical device, disposed upstream of the first lens, adjusts the angular orientation of the final beam waist by a parallel displacement of the beam at said optical device. The transverse position of the first lens relative to the axis of the beam is varied to control the transverse position of the final beam waist relative to the target while the relative axial positions of the lenses are varied to control the diameter of the final beam waist and to control the axial position of the final beam waist.
REFERENCES:
patent: 4781445 (1988-11-01), Baba et al.
Harrison, R. W.; "Beam Director with Independent Adjustments", IBM Tech. Discl. Bulletin; vol. 14, No. 12; May 1972; pp. 3815-3816; 350/247.
Gunter William D.
Lynch Dana H.
McAlister Kenneth W.
Adams Harold W.
Brekke Darrell G.
Manning John R.
Sugarman Scott J.
The United States of America as represented by the Administrator
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