MiXran Meg1088 Economical Metallic Coated Mirror
| Brand | MiXran |
|---|---|
| Model | Meg1088 |
| Substrate Material | Optical Float Glass (BK7-equivalent) |
| Thickness | 2.3 mm ± 0.1 mm |
| Surface Flatness | λ/4 @ 633 nm |
| Surface Quality | 60-40 scratch-dig |
| Clear Aperture | ≥90% of nominal dimension |
| Coating Options | Protected Aluminum (AL), Enhanced UV Aluminum (UVAL), Protected Silver (AG), Protected Gold (AU) |
| Reflectance Range (typ.) | AL: 88–92% (450–2000 nm), UVAL: ≥85% (250–450 nm), AG: 95–98% (450–2000 nm), AU: ≥98% (700–12,000 nm) |
| Environmental Compliance | RoHS 2011/65/EU, REACH SVHC-free |
Overview
The MiXran Meg1088 is an economical yet performance-validated metallic coated mirror designed for routine optical alignment, beam steering, and non-critical imaging applications in academic laboratories, educational institutions, and industrial prototyping environments. Engineered with precision-ground optical float glass substrates (BK7-grade equivalent), each Meg1088 mirror features a consistent 2.3 mm thickness and λ/4 surface flatness (measured at 633 nm HeNe wavelength), ensuring minimal wavefront distortion under normal incidence conditions. Unlike dielectric mirrors optimized for narrowband reflectivity, the Meg1088 leverages robust vacuum-deposited metallic coatings—protected aluminum, enhanced UV aluminum, protected silver, or protected gold—each overcoated with a durable SiO₂ or MgF₂ layer to inhibit oxidation and mechanical abrasion. This architecture delivers broad-spectrum reflectance with high environmental stability, making it suitable for ambient-lab deployment without active thermal or humidity control.
Key Features
- Precision substrate: Optically polished float glass with surface flatness ≤λ/4 @ 633 nm and surface quality rated 60-40 per MIL-PRF-13830B.
- Standardized thickness: Uniform 2.3 mm ± 0.1 mm substrate thickness across all geometries, enabling predictable mechanical mounting and thermal expansion behavior.
- Four coating variants: Protected Aluminum (AL) for general visible-NIR use; Enhanced UV Aluminum (UVAL) with optimized adhesion and oxide suppression for 250–450 nm operation; Protected Silver (AG) for highest broadband reflectance (450–2000 nm); and Protected Gold (AU) for superior IR performance (700–12,000 nm).
- Clear aperture guarantee: ≥90% of nominal dimension ensures compatibility with standard kinematic mounts and lens tubes without vignetting.
- RoHS-compliant and REACH SVHC-free manufacturing: Fully documented material declarations support regulatory compliance in EU-based research infrastructure and export-controlled instrumentation.
Sample Compatibility & Compliance
The Meg1088 is compatible with standard optomechanical systems including Thorlabs SM-series lens tubes, Newport KM-series kinematic mounts, and custom CNC-machined mirror holders. Its 2.3 mm thickness allows secure clamping in most commercial retaining rings (e.g., SM05, SM1, or 1″ post holders with appropriate adapters). All coatings undergo accelerated humidity testing (IEC 60068-2-30, Db cycle) and adhesion verification per ISO 2409 (cross-cut test, Class 0–1). While not certified to ISO 10110-7 for laser-grade damage thresholds, the Meg1088 is rated for continuous-wave (CW) optical power densities up to 500 W/cm² at 1064 nm (AL/AG) and 200 W/cm² at 10.6 µm (AU), assuming clean, collimated, near-normal incidence illumination. It meets GLP-aligned documentation standards for traceable batch records and coating deposition logs.
Software & Data Management
As a passive optical component, the Meg1088 requires no embedded firmware, drivers, or proprietary software. Spectral reflectance data (measured via PerkinElmer Lambda 1050+ spectrophotometer with integrating sphere) are provided in standardized CSV and PDF formats upon request, conforming to ASTM E275 and ISO 9050 conventions. Each product shipment includes a Certificate of Conformance listing batch ID, coating type, substrate lot number, and measured average reflectance across specified bands (e.g., “UVAL: Rₐᵥₑ = 86.3% @ 250–400 nm”). Digital records are retained for 10 years and available for audit under ISO 9001:2015 clause 8.5.2 (Identification and traceability).
Applications
- Teaching labs: Alignment of HeNe, diode, and DPSS lasers in undergraduate optics courses (e.g., Michelson interferometry, Brewster angle demonstration).
- Industrial OEM integration: Beam folding in compact spectroscopic engines, barcode scanner optics, and machine vision illumination paths where cost-sensitive reliability is prioritized over ultra-high reflectance.
- UV photolithography tooling: UVAL-coated variants serve as cost-effective retroreflectors and fold mirrors in mask aligner illumination arms operating down to 254 nm.
- Mid-IR thermal imaging: AU-coated Meg1088 mirrors are used in uncooled microbolometer optical benches requiring stable >95% reflectance from 3–5 µm and 8–12 µm atmospheric windows.
- Environmental monitoring systems: AG-coated units deployed in open-path gas analyzers (e.g., DOAS configurations) due to their high visible-NIR reflectance and resistance to outdoor-grade humidity cycling.
FAQ
Is the Meg1088 suitable for pulsed laser applications?
No. The Meg1088 is not rated for nanosecond or femtosecond pulse exposure. Its metallic coating architecture lacks the LIDT certification required for Q-switched or ultrafast systems. For such use cases, consult MiXran’s dielectric HR mirror series (e.g., MHR-1064-PV).
Can I specify custom dimensions or coating specifications?
Yes. MiXran offers OEM customization including non-standard sizes (minimum 3 mm × 3 mm), alternate substrate materials (e.g., fused silica for UV-C or low-thermal-expansion applications), and tailored coating spectral curves—subject to minimum order quantities and lead-time agreement.
What is the warranty and return policy for Meg1088 mirrors?
MiXran provides a 24-month limited warranty covering material defects and coating delamination under normal handling and ambient laboratory conditions. Returns require prior authorization and are accepted within 30 days of invoice date for unused, undamaged units in original packaging.
Are measurement certificates supplied with every order?
A Certificate of Conformance is included with every shipment. Full spectral reflectance reports (with uncertainty budgets per GUM) are available on request at no additional charge for orders exceeding 10 units per coating type.
Do Meg1088 mirrors comply with FDA or IEC 61000-4 immunity requirements?
As a passive, non-electronic component, the Meg1088 falls outside the scope of electromagnetic immunity directives. However, its RoHS/REACH compliance supports integration into medical devices governed by IEC 60601-1 and FDA 21 CFR Part 820 quality system regulations.
