Compact precision beam manipulators

Details Compact precision beam manipulators Compact precision beam manipulators

2006-04-25

2006-04-25

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Prism

C359S822000

Reexamination Certificate

active

07035025

ABSTRACT:
Compact beam manipulators employ one or more Risley prism sets with or without a parallel plate translator. One beam manipulator contains a plate mounted to permit pitch and yaw adjustments and a prism set mounted to permit rotations. The rotations of the prisms adjust a beam direction, and adjustment of the plate adjusts the beam position. Another beam manipulator contains a prism set mounted to permit rotations and pitch and yaw adjustments of the prisms. The rotations and pitch and yaw adjustments provide coupled changes in the position and direction of a beam, and iterative adjustments alternate between rotating prisms to change the beam direction and the adjusting pitch and yaw to change the beam position. The iterative adjustments are complete when the beam has a target position and a target direction to within required tolerances. Gluing elements to optic holders minimizes stress-induced birefringence and temperature and humidity effects.

REFERENCES:
patent: 2672786 (1954-03-01), Capstaff
patent: 4586787 (1986-05-01), Fiandra et al.
patent: 4822974 (1989-04-01), Leighton
patent: 5237457 (1993-08-01), Oono et al.

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