481 Series High-Performance Rotation Stages
481 Series High-Performance Rotation Stages
  • Sensitivity to 15 arc sec
  • 360° coarse/5° fine motion
  • Post or Table-top mounting
  • Rotates 1 in. (25.4 mm) diameter polarizers and wave plates
  • Adaptor available for mounting 1/2-in diameter optics
DescriptionSpecifications Models Literature

The versatile Model 481-A rotary stage is ideal for fine-tuning the angular orientation of any component after rotating it to an approximate angle.

An inner stage rotates 360° in a precision bored bushing that locks with a side mounted thumbscrew. The outer stage is a high resolution, tangentially driven design. Scale markings indicating every degree and a vernier with 5 arc min markings are engraved on the side of the stage. Model 481-A is also available with 100 pitch AJS Fine Adjustment Screws for higher resolution. Model 481-A attaches to tables and breadboards via clearance slots in the base, and to posts using one of two tapped holes located in the side of the stage. Additionally, the 481-A includes two 1 in. (25.4 mm) diameter retaining rings and a solid aperture insert with a centered clearance hole for on-axis mounting of components such as post holders.

A 1/2-in diameter polarizer or waveplate can be mounted to the 481-A stage using the PRA-05 Adaptor, which screws into the rotator's 1.063-20 thread. The PRA-05 Adaptor included a retaining ring.

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For applications such as polarization control, two tapped holes in the side of the stage permit convenient vertical mounting to standard posts, such as the VPH-2/SP Post combination shown.