OM01-A15 Open-Frame Reflective/Beam-Splitting Mirror Mount

Overview

The OM01-A15 is a precision-engineered open-frame mirror mount designed for stable, repeatable angular alignment of reflective and beam-splitting optics in laboratory and industrial optical setups. Based on the Couette-type kinematic principle—where angular positioning is achieved via differential thermal expansion and elastic deformation compensation—the mount employs a rigid yet compliant mechanical architecture to minimize hysteresis and drift during fine adjustment. Its primary function is to hold plano or wedged mirrors, pellicles, or dichroic beam splitters within high-stability optical paths, including interferometric systems, laser cavity alignment stations, and metrology-grade collimation benches. The design conforms to standard optomechanical interface protocols used across OEM photonics platforms and aligns with ISO 10110 surface specification handling practices for mounted optical elements.

Key Features

• Open-frame geometry enables unobstructed access to optical surfaces and facilitates integration with adjacent components such as translation stages, kinematic bases, and vacuum-compatible enclosures.
• Three-point PTFE-tipped clamping system ensures uniform, non-marring contact pressure distribution across the mirror substrate—critical for preserving surface figure integrity (λ/10 or better) and preventing edge chipping on fused silica or BK7 substrates.
• High-cycle disc spring assembly provides deterministic, low-hysteresis return force (≥50,000 cycles rated) with <0.5 arcsec repeatability under ambient thermal fluctuations (20 ± 2 °C).
• Standardized mounting interface: dual M4 countersunk holes (Φ4.5 mm, counterbore Φ7.2 mm × 6 mm depth) compatible with PH-series post holders, BP-series baseplates, and ISO-standard optical breadboards (e.g., Thorlabs, Newport).
• Angular adjustment mechanism features dual-axis micrometer-driven tilt (±5° total range) with backlash-free brass-on-brass threading and integrated locking set screws for long-term positional retention.

Sample Compatibility & Compliance

The OM01-A15 accommodates circular mirrors up to Ø25.4 mm (1 inch) and rectangular optics up to 25 × 36 mm, provided thickness remains within 3–8 mm. It supports common coating types—including protected aluminum, dielectric HR/AR stacks, and metallic broadband splitters—without inducing stress birefringence. All structural components are manufactured from 6061-T6 aluminum alloy, anodized to MIL-A-8625 Type II Class 1, ensuring corrosion resistance and ESD-safe grounding when mounted on conductive optical tables. The mount complies with ISO 9001:2015 manufacturing traceability requirements and meets mechanical stability benchmarks defined in ANSI/OEOS-OP-1.0 (Optomechanical Component Performance Specifications).

Software & Data Management

While the OM01-A15 is a passive mechanical component requiring no firmware or driver installation, its dimensional and kinematic parameters are fully documented in STEP AP214 and IGES format files available upon request for CAD-integrated optical system modeling (e.g., Zemax OpticStudio, FRED, CODE V). Calibration reports—including angular repeatability test data (per ISO 10110-5 Annex D), thermal drift characterization (−10 °C to +50 °C), and load-induced deflection curves—are archived per GLP-compliant documentation standards and may be supplied with batch-specific certification.

Applications

• Laser cavity mirror alignment in CW and pulsed DPSS systems (e.g., Nd:YAG, Ti:Sapphire)
• Beam steering and path folding in Fourier-transform infrared (FTIR) spectrometers
• Reference arm stabilization in Michelson and Mach–Zehnder interferometers
• Optical coherence tomography (OCT) probe head assembly
• Educational optics labs requiring modular, reconfigurable mounts for undergraduate wave optics experiments
• Integration into automated alignment subsystems using stepper-motorized actuators (compatible with standard ¼”-28 threaded adjustment ports)

FAQ

Is the OM01-A15 vacuum-compatible?
Yes—when assembled with stainless steel fasteners and operated below 10⁻⁵ Torr, it exhibits outgassing rates compliant with NASA ASTM E595 specifications.
Can I use this mount with coated UV-fused silica mirrors?
Yes—the PTFE-tipped clamps and low-contact-pressure design prevent coating delamination or substrate micro-fracture typical of brittle UV-grade materials.
Does the mount include alignment scale markings?
No—angular scales are omitted by design to preserve mechanical rigidity; users are advised to employ external autocollimators or digital theodolites for sub-arcminute verification.
What torque should be applied to the clamping screws?
Maximum recommended torque is 0.15 N·m; over-torquing risks PTFE tip deformation and loss of three-point contact symmetry.
Are replacement disc springs available separately?
Yes—part number DS-OM01-SPR-01 is stocked and certified to DIN 2093 Grade 2 performance specifications.