ZOLIX RSM50-1K Precision Manual Rotary Stage

Overview

The ZOLIX RSM50-1K is a manually operated, high-stability precision rotary stage engineered for repeatable angular positioning in optical laboratory environments. Based on a robust coaxial bearing architecture with low-friction rotational kinematics, it enables deterministic angular orientation of optical components—such as lenses, mirrors, waveplates, and polarizers—within a full 360° range. Unlike motorized or piezoelectric alternatives, the RSM50-1K prioritizes mechanical simplicity, tactile feedback, and long-term dimensional stability, making it ideal for setups where thermal drift, electromagnetic interference, or power dependency must be eliminated. Its center-mounted M52×1 internal thread allows direct integration of standard 50 mm (2-inch) optical elements via threaded retaining rings, eliminating the need for intermediate adapters in many beam path configurations. The stage’s rigid aluminum alloy construction and precision-machined surface finish ensure minimal wobble (< 15 µm axial runout typical) and consistent repeatability across repeated manual adjustments.

Key Features

• Precision-machined 50 mm diameter platform with engraved 360° circumferential scale, graduated in 2° increments for rapid visual angle estimation
• Center M52×1 female thread enables direct mounting of 50 mm optics or compatibility with standard optical mounts (e.g., kinematic mirror mounts, lens tubes)
• Integrated dual-function handwheel: provides coarse rotation over full 360°, then engages fine-threaded adjustment for controlled incremental movement
• Mechanically locked position retention via ergonomic locking knob—designed to maintain set angle under static load without creep or backlash
• Low-profile, symmetric geometry supports both horizontal and vertical orientation; mounting holes conform to standard 25 mm or 50 mm optical rail spacing (M4 threaded)
• Weight-optimized at 0.35 kg for minimal inertia and ease of integration into multi-axis optical breadboards or compact alignment stations

Sample Compatibility & Compliance

The RSM50-1K accommodates standard optical components up to 50 mm clear aperture, including plano-convex lenses, metallic or dielectric mirrors, quarter-wave plates, and fiber collimators. Its M52×1 center thread conforms to ISO metric thread standards (ISO 261), ensuring interoperability with commercially available optical retainers and adapter rings. While not certified to specific regulatory frameworks (e.g., FDA, CE), the stage is designed and manufactured under documented quality control procedures aligned with ISO 9001 principles. Its mechanical stability and scale readability support traceable angular setup in applications governed by ISO 10110 (optical element specification) and ANSI/OEOSC OP1.002 (optical alignment practice). No electrical or software components are present, eliminating requirements for EMC testing or cybersecurity validation.

Software & Data Management

The RSM50-1K is a purely mechanical device with no embedded electronics, firmware, or digital interface. As such, it requires no driver installation, calibration software, or data logging infrastructure. Angular position is determined visually from the engraved scale and recorded manually in lab notebooks or electronic logbooks compliant with GLP (Good Laboratory Practice) or internal SOPs. For users requiring digital documentation, the stage is fully compatible with third-party imaging-based metrology systems—including machine vision cameras paired with OpenCV-based angle measurement scripts or commercial optical alignment software (e.g., Thorlabs’ Kinesis, Newport’s Motion Controller Suite) when used in conjunction with optional encoder add-ons (not included). Audit trails remain user-managed per institutional record-keeping policy.

Applications

• Laser cavity alignment and resonator mode optimization in CW and pulsed laser systems
• Polarization state control using rotating half-wave or quarter-wave plates in ellipsometry and interferometry setups
• Beam steering verification and angular sensitivity testing of photodetectors and quadrant cells
• Calibration of goniometric instruments, including autocollimators and angle encoders
• Education and training labs for teaching geometric optics, rotational symmetry, and coordinate transformation concepts
• Integration into custom multi-axis optomechanical assemblies where passive, non-intrusive angular degrees of freedom are required

FAQ

Is the RSM50-1K compatible with vacuum environments?

No—standard version uses lubricated bearings and non-outgassing materials not rated for vacuum use. Custom vacuum-compatible variants (e.g., dry-lubricated bearings, stainless steel housing) are available upon request.
Can I mount a 25 mm optic directly to this stage?

Yes—using an M25×0.75 to M52×1 adapter ring (sold separately), or by securing the optic with a compatible retaining ring inside a 50 mm cage system mounted to the stage.
What is the typical angular repeatability after lock engagement?

Under controlled lab conditions (23 ± 1°C, no vibration), angular deviation after repeated lock/unlock cycles remains within ±0.1°, verified via autocollimator measurement.
Does ZOLIX provide calibration certificates for this stage?

Standard units ship without NIST-traceable calibration. Optional factory calibration with uncertainty budget (±0.05° at 2σ) is available under quotation.
How does the RSM50-1K differ from the RSM50-2K model?

The RSM50-2K includes a vernier scale block enabling interpolation down to 0.033° resolution; the RSM50-1K relies solely on the primary 2° scale and tactile estimation for sub-degree positioning.