MiXran Meg1014 UV-Fused Silica Biconvex Lens

Overview

The MiXran Meg1014 is a precision-engineered biconvex lens fabricated from high-purity UV-grade fused silica (SiO₂), optimized for demanding optical applications in the deep ultraviolet (DUV) through visible spectrum. Unlike standard optical glass, UV fused silica exhibits exceptional transmission down to 185 nm, negligible fluorescence, low thermal expansion (α ≈ 0.55 × 10⁻⁶ /°C), and high resistance to laser-induced damage—making it indispensable for excimer laser systems (e.g., KrF at 248 nm, ArF at 193 nm), UV spectroscopy, photolithography alignment optics, and space-qualified instrumentation. The Meg1014 series adheres to ISO 10110-1 (general tolerances) and ISO 10110-7 (surface imperfections), with surface figure accuracy specified at λ/4 RMS at 633 nm and surface quality rated 20–10 scratch-dig per MIL-PRF-13830B. Its symmetric biconvex geometry (R₁ = R₂) ensures minimal spherical aberration for collimated or near-collimated beam focusing, while the optional UV broadband AR coating (250–400 nm, R < 0.5% per surface) enhances throughput and reduces ghost reflections in multi-element UV imaging trains.

Key Features

• UV-grade fused silica substrate with transmission > 80% at 254 nm and > 90% at 300 nm (10 mm path)
• Two standard optical finishes: uncoated (for high-LIDT applications) or UV broadband AR coating (250–400 nm, average R < 0.4% per surface)
• Diameter range from 6.3 mm to 50.8 mm; EFL options spanning 6 mm to 1000 mm—enabling selection across magnification, beam expansion, and collimation requirements
• Tight dimensional control: center thickness tolerance ±0.1 mm, focal length tolerance ±1%, centration < 3 arcmin
• Robust mechanical stability: zero moisture absorption, radiation hardness up to 10⁶ rad(Si), and compatibility with Class 100 cleanroom handling
• Traceable metrology: each lens supplied with individual test report including interferometric surface map, transmitted wavefront error (TWE), and spectral transmittance data

Sample Compatibility & Compliance

The Meg1014 lens is fully compatible with industry-standard lens mounts—including SM-threaded (e.g., Thorlabs SM05, SM1, SM2), kinematic cell holders, and custom CNC-machined aluminum or stainless-steel retaining rings (e.g., GL22-series mounting adapters referenced in ordering codes). All lenses are manufactured and inspected under controlled cleanroom conditions (ISO Class 7) and conform to RoHS Directive 2011/65/EU. For regulated environments, documentation supports GLP/GMP traceability: batch numbers, raw material certificates (including OH⁻ content < 1 ppm), and interferometric calibration records are available upon request. While not FDA-regulated as a standalone device, the Meg1014 meets optical component requirements cited in ASTM E1331 (spectrophotometer performance), ISO 15382 (UV optical system qualification), and USP (UV spectrophotometric system suitability).

Software & Data Management

No embedded firmware or proprietary software is associated with the Meg1014, as it is a passive optical component. However, comprehensive optical design integration is supported via native import into industry-standard ray-tracing platforms: Zemax OpticStudio (.zmx), CODE V (.seq), and FRED (.fred) libraries include full prescription data (curvatures, thicknesses, refractive index dispersion curves n(λ) per Sellmeier equation), enabling accurate modeling of chromatic and monochromatic aberrations. Spectral transmittance datasets (200–1100 nm, 1 nm resolution) and measured surface roughness (≤ 5 Å RMS) are provided in CSV format with every shipment. For audit-ready environments, digital certificates of conformance (CoC) and calibration reports are archived in PDF/A-1b format compliant with ISO 19005-1 and support long-term readability under FDA 21 CFR Part 11 electronic record requirements when stored on validated document management systems.

Applications

• Excimer laser beam delivery and homogenization optics (KrF, ArF, XeCl)
• UV-VIS spectrophotometer condenser and collector lenses
• Fluorescence microscopy illumination paths requiring minimal autofluorescence
• UV lithography mask aligner focusing assemblies
• Space-based solar UV monitoring sensors (e.g., SDO/EVE, TSIS-1 heritage materials)
• High-power CW and pulsed UV laser cavity optics where thermal lensing must be minimized
• Calibration standards for UV radiometry and actinometry

FAQ

Is the UV AR coating durable enough for cleaning with IPA and lint-free wipes?
Yes—the MgF₂/SiO₂ multilayer coating is ion-assisted deposited (IAD) and qualified for repeated cleaning using spectroscopic-grade isopropanol and Class 10 cleanroom swabs without degradation.
Can Meg1014 lenses be used in vacuum environments?
Absolutely—UV fused silica has outgassing rates below 1.0 × 10⁻¹² g/(cm²·s) per ASTM E595, making it suitable for UHV (10⁻⁹ Torr) optical chambers.
What is the maximum continuous-wave laser power density this lens can withstand at 266 nm?
Uncoated Meg1014 lenses exhibit LIDT > 5 J/cm² at 266 nm, 10 ns, 20 Hz (tested per ISO 21254-1); coated versions maintain > 3 J/cm² under identical conditions.
Do you provide custom diameters or focal lengths outside the listed catalog options?
Yes—custom geometries, non-standard coatings (e.g., V-coat at 193 nm), and tight-tolerance specifications (e.g., λ/10 surface figure) are available under OEM agreements with minimum order quantities.
Are mounting adapters like GL22-025-025 included with the lens purchase?
No—mounting hardware is sold separately; however, mechanical drawings and thread specifications (UNF, M-series) are provided in the product datasheet to facilitate third-party integration.