ZOLIX TSAG Series Motorized Angular Positioning Stage

Overview

The ZOLIX TSAG Series Motorized Angular Positioning Stage is an engineered optical alignment solution designed for high-precision angular adjustment of optical components in research-grade and industrial optical setups. Based on the principle of controlled rotational displacement via worm gear reduction and stepper motor actuation, the TSAG stage delivers deterministic angular positioning with sub-arcsecond repeatability. Its mechanical architecture eliminates backlash through a high-rigidity elastic shaft coupling and utilizes curved roller rails to constrain motion along a true circular arc—ensuring that angular rotation occurs about a fixed center point without parasitic lateral shift. This geometric fidelity is essential for applications requiring co-axial multi-axis goniometric control, such as laser beam steering, interferometer alignment, spectrometer calibration, and ellipsometry sample orientation.

Key Features

• Fixed-center dual-axis capability: Two TSAG stages can be stacked orthogonally to achieve independent, non-coupled rotation about a common pivot point—enabling precise two-dimensional angular vector control without mechanical crosstalk.
• Backlash-free transmission: A 352:1 (TSAG10-W) or 252:1 (TSAG15-W) worm gear train, combined with a precision-machined elastic coupling, suppresses torsional compliance and eliminates positional hysteresis from gear meshing or shaft misalignment.
• Sub-arcsecond resolution and repeatability: With 8-microstepping drive electronics, the system achieves angular resolution down to 0.00032° and maintains repeatability within ±0.0043°—validated under laboratory conditions per ISO 230-2 Annex B protocols.
• Modular integration design: Standard M4 and M6 tapped holes on the 65 mm × 65 mm top plate support direct mounting of mirrors, waveplates, detectors, or fiber collimators; compatible with ZOLIX linear translation stages for XYZ-θx-θy multi-degree-of-freedom systems.
• Robust operational safeguards: Integrated mechanical limit switches prevent overtravel damage, while the sealed worm gear housing and low-friction roller rail minimize wear during extended duty cycles in cleanroom or vacuum-compatible environments (optional).

Sample Compatibility & Compliance

The TSAG stage accommodates standard optical mounts—including kinematic mirror cells, SM1-threaded lens tubes, and cage system adapters—without modification. Its 4 kg horizontal load rating supports typical optics assemblies up to 100 mm clear aperture. The stage is manufactured under ISO 9001 quality management systems and conforms to CE electromagnetic compatibility (EMC) directives (2014/30/EU). While not intrinsically rated for Class 100 cleanrooms, its non-outgassing aluminum alloy construction and lubricant-free roller rail interface make it suitable for use in controlled laboratory environments where particulate generation must be minimized. No hazardous substances are used in production per RoHS Directive 2011/65/EU.

Software & Data Management

The TSAG series supports industry-standard motion control interfaces including TTL-level pulse/direction signals and RS-422 differential communication. It is fully compatible with ZOLIX’s proprietary MotionMaster™ control software (Windows/Linux), which provides scriptable trajectory generation, real-time position logging, and synchronized multi-axis sequencing. For integration into automated test benches, native drivers are available for LabVIEW, MATLAB Instrument Control Toolbox, and Python (PyVISA). Audit trails, user-access levels, and position history export (CSV/JSON) comply with GLP documentation requirements. Firmware updates preserve backward compatibility and include configurable acceleration profiles to reduce settling time without inducing resonance in mounted optics.

Applications

• Laser cavity alignment and resonator mode optimization
• Polarization state control using rotating half-wave plates or polarizers
• In-situ angular reflectance and transmittance measurements (e.g., variable-angle spectroscopic ellipsometry)
• Multi-axis beam combiner and optical switch calibration
• Automated alignment of fiber-coupled photonic integrated circuits
• Calibration reference platforms for angle metrology instruments (e.g., autocollimators, electronic levels)

FAQ

Can the TSAG stage be operated in vacuum environments?
Standard units are rated for ambient operation only; vacuum-compatible variants with dry-lubricated rails and outgassing-certified materials are available upon request.
Is encoder feedback integrated into the stage?
The base configuration uses open-loop stepper control; closed-loop operation with incremental rotary encoder feedback is supported via optional servo motor retrofit kits.
What is the maximum allowable torque load when mounted vertically?
Vertical orientation reduces effective load capacity by ~30% due to gravitational moment arm; consult the mechanical loading diagram in the technical manual before vertical installation.
Does the stage support analog voltage input for continuous angular sweep?
No—positioning is digital pulse-driven only; analog sweep functionality requires external waveform generation and pulse conversion circuitry.
Are CAD models and mounting templates provided?
Yes—STEP and IGES files, along with dimensional drawings and hole pattern templates, are supplied with each unit and accessible via the ZOLIX Technical Resource Portal.