HTMM25-L Precision Two-Axis Kinematic Mirror Mount with Compression Ring Design for 25 mm and 25.4 mm Optics
| Brand | HanDing/HT |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | HTMM25-L |
| Pricing | Upon Request |
Overview
The HTMM25-L is a high-stability, two-axis kinematic optical mirror mount engineered for precise angular alignment of circular optics with diameters of 25 mm or 25.4 mm (1 inch). Designed using a compression-ring clamping mechanism—rather than traditional spring-loaded or set-screw-based retention—the mount eliminates surface deformation, edge stress, and micro-slip during thermal cycling or mechanical vibration. Its kinematic architecture features orthogonal, differential micrometer-driven adjustments (typically ±2° range per axis) with sub-arcminute repeatability, enabling stable, drift-resistant beam steering in interferometric setups, laser cavity alignment, and collimation verification workflows. The mount’s baseplate incorporates standard M4 and M6 tapped holes compatible with ISO-standard optical tables and breadboards, supporting rigid integration into multi-component optical trains.
Key Features
- Compression-ring optic retention system minimizes stress-induced birefringence and surface distortion on coated or delicate substrates
- Two independent, backlash-compensated adjustment axes with fine-pitch micrometers (typically 10 µm/rev resolution)
- Stainless steel construction with black anodized aluminum housing for dimensional stability and corrosion resistance
- Optimized for optics up to 6 mm thickness; accommodates both 25 mm (0.984″) and 25.4 mm (1″) diameter mirrors without adapter
- Integrated locking mechanism per axis ensures positional retention under acceleration or long-term static loading
- Compliant with ISO 10110 surface orientation conventions for optical component mounting
Sample Compatibility & Compliance
The HTMM25-L supports plano, concave, and convex mirrors with clear apertures of 25 mm or 25.4 mm and thicknesses between 2 mm and 6 mm. It is routinely deployed with dielectric-coated Nd:YAG mirrors (R > 99.8% @ 1064 nm), broadband metallic coatings (Al, Au), and UV-fused silica substrates. While not certified to specific international standards as a standalone component, the mount’s mechanical design adheres to principles outlined in ISO 10110-7 (surface imperfection specification) and ISO 10110-12 (optical element mounting guidelines). Its repeatable positioning performance meets requirements for GLP-aligned optical alignment procedures in metrology labs and university teaching laboratories.
Software & Data Management
As a purely mechanical, manually operated mount, the HTMM25-L does not incorporate embedded electronics, sensors, or firmware. Consequently, it requires no driver installation, firmware updates, or software configuration. Alignment data—including angular settings, lock status, and positional history—is maintained externally via lab notebooks, digital calibration logs, or LIMS-integrated tracking systems. For automated applications, the mount is fully compatible with third-party motorized actuators (e.g., Thorlabs K10CR1-compatible stepper motor adapters) and motion controllers supporting ASCII command protocols (e.g., Newport ESP301, PI C-887). Audit trails for manual adjustments may be recorded in accordance with 21 CFR Part 11-compliant documentation practices when integrated into regulated R&D environments.
Applications
- Laser cavity alignment in CW and pulsed solid-state laser systems
- Beam steering and retro-reflection stabilization in Michelson and Mach–Zehnder interferometers
- Collimation verification of fiber-coupled sources using shear-plate or autocollimator methods
- Teaching optics laboratories: demonstrating angular sensitivity, diffraction-limited alignment, and wavefront tilt control
- Integration into custom-built spectrometers, ellipsometers, and polarization-sensitive measurement platforms
- Mounting of reference mirrors in environmental test chambers where thermal expansion mismatch must be minimized
FAQ
What optical thicknesses are supported by the HTMM25-L?
The mount is optimized for optics ranging from 2 mm to 6 mm in thickness. Thicker substrates may interfere with full ring closure and compromise clamping uniformity.
Can this mount be used with vacuum-compatible optics?
Yes—when paired with vacuum-rated mirrors (e.g., low-outgassing Al-coated fused silica), the HTMM25-L’s all-metal construction and absence of adhesives or elastomers make it suitable for UHV environments up to 10⁻⁷ mbar, provided mounting screws are torqued to manufacturer-recommended values.
Is there a version with metric-threaded adjustment screws?
The standard HTMM25-L uses M4 × 0.7 pitch micrometers. Custom variants with M3 × 0.5 or imperial 80 TPI threads are available upon OEM request.
Does the compression ring affect wavefront error of high-precision optics?
Independent testing shows <0.05 wave PV wavefront distortion (λ = 632.8 nm) for λ/10 surface figure mirrors when mounted per torque specifications—well within tolerances for non-diffraction-limited alignment tasks.
How is thermal drift performance characterized?
Over a 20 °C to 30 °C ambient range, angular drift remains below ±3 arcseconds per axis over 24 hours when mounted on granite or Invar optical bases, verified using autocollimator-based monitoring.
