ZOLIX MAD25-S2C-xx Square Mirror Adapter

Overview

The ZOLIX MAD25-S2C-xx Square Mirror Adapter is a precision-engineered mechanical interface designed to enable secure, repeatable mounting of square optical elements—such as square mirrors, square diffraction gratings, or square filter substrates—into standard Ø25.4 mm (1 inch) kinematic or tip/tilt optical mounts. Unlike circular optics that readily interface with common SM1- or RMS-threaded mounts, square components lack inherent rotational symmetry and standardized clamping geometry, resulting in instability, misalignment, or mechanical stress when improperly constrained. This adapter resolves that fundamental compatibility gap by providing a rigid, dimensionally stable aluminum housing with precisely machined square apertures (customizable per “xx” suffix, e.g., 20×20 mm, 25×25 mm) and integrated alignment reference surfaces. It operates on a passive mechanical coupling principle—no adhesives, no thermal curing, no active actuation—ensuring long-term dimensional fidelity under vacuum, ambient, or temperature-stabilized optical bench environments.

Key Features

• High-precision CNC-machined 6061-T6 aluminum body with black anodized finish for corrosion resistance and low outgassing (suitable for moderate vacuum applications up to 10⁻⁴ mbar)
• Interchangeable square aperture inserts (defined by “xx” suffix) accommodating standard square optic dimensions including 20×20 mm, 25×25 mm, and 30×30 mm; insert retention via press-fit + optional set-screw backup
• Outer cylindrical profile conforms to Ø25.4 mm (1″) diameter specification, enabling direct integration into industry-standard tip/tilt mounts such as OMRS, OMHS, and OMUS series
• Front and rear reference faces are lapped to ≤5 µm flatness and perpendicularity tolerance relative to the central optical axis, supporting angular alignment repeatability better than ±15 arcsec
• No internal threading or adhesive bonding required—optics are secured via radial compression using the host mount’s locking screws, minimizing shear-induced birefringence in coated substrates

Sample Compatibility & Compliance

The MAD25-S2C-xx accommodates uncoated or dielectric-coated square optics with thicknesses ranging from 2 mm to 10 mm, provided substrate material exhibits sufficient mechanical rigidity (e.g., fused silica, BK7, CaF₂, or N-BK7). It is not recommended for soft polymers, thin pellicles (<1 mm), or fragile crystalline optics without supplemental edge support. The adapter complies with standard laboratory optical bench practices defined in ISO 10110-7 (surface form tolerances) and aligns with mechanical interface conventions referenced in ANSI/OEOSC OP1.002–2021 (optomechanical mounting nomenclature). While not certified to specific regulatory standards (e.g., FDA, CE), its construction materials and surface treatment meet general GLP-compliant lab equipment criteria for non-invasive, non-contaminating optical handling.

Software & Data Management

This is a purely passive mechanical component with no embedded electronics, firmware, or digital interface. Consequently, it requires no driver installation, calibration software, or data logging capability. Integration is entirely hardware-based and documented via ZOLIX’s publicly available mechanical drawings (PDF/DXF), which include GD&T annotations, tolerance stacks, and mating interface specifications. Mounting sequence instructions—including torque recommendations for host-mount set screws (0.3–0.5 N·m)—are included in the bilingual (English/Chinese) user guide shipped with each unit. No audit trail, electronic signature, or 21 CFR Part 11 compliance is applicable, as no digital data acquisition or processing occurs.

Applications

• Alignment and stabilization of square broadband mirrors in ultrafast laser beam steering systems (e.g., Ti:sapphire oscillator cavities)
• Mounting of square transmission gratings in compact spectrometer breadboards requiring minimal footprint and high angular stability
• Integration of square polarizing beamsplitters in Mach–Zehnder interferometer configurations where orthogonal polarization paths demand precise geometric registration
• Secure holding of square neutral density filters or dichroic mirrors in multi-channel fluorescence imaging setups where vibration-induced walk-off must be minimized
• Adaptation of custom-fabricated square nonlinear crystals (e.g., BBO, LBO) into commercial optomechanical platforms for parametric amplification experiments

FAQ

Can the MAD25-S2C-xx be used in vacuum environments?

Yes—its 6061-T6 aluminum construction and anodized surface meet outgassing requirements for medium vacuum (≤10⁻⁴ mbar); however, users must verify compatibility with their specific chamber bake-out protocol.
Is thermal expansion mismatch compensated in the design?

No active compensation is implemented; users should account for differential CTE between the adapter (α ≈ 23.6 × 10⁻⁶ /°C) and optic substrates (e.g., fused silica α ≈ 0.55 × 10⁻⁶ /°C) in long-term stability calculations.
Does ZOLIX provide custom aperture sizes beyond the standard xx variants?

Yes—custom machining for non-standard square dimensions (e.g., 18×18 mm, 35×35 mm) is available upon engineering review and minimum order quantity agreement.
Are mounting screws included with the adapter?

No—the MAD25-S2C-xx is supplied as a standalone adapter; compatible locking screws must be sourced from the host mount manufacturer (e.g., OMRS-compatible M3×0.5 screws).
Can this adapter accommodate wedged or Brewster-angle square optics?

Only if the wedge angle is ≤0.5° and the optic’s thickness variation across the aperture remains within ±2 µm; otherwise, contact-induced distortion may exceed acceptable wavefront error thresholds.