MiXran M-K9L Plano-Convex Lens
| Brand | MiXran |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Optical Component |
| Model | Meg-PT-1000 |
| Coating Options | Uncoated / AR (400–700 nm) / AR (650–1050 nm) / AR (1000–1650 nm) |
| Diameter Range | 3–100 mm |
| Focal Length Range | 3.3–2500 mm |
| Material | N-BK7 (Schott-grade equivalent) |
| Surface Quality | 40-20 scratch-dig |
Overview
The MiXran M-K9L series is a precision-engineered line of plano-convex (PCX) lenses manufactured from high-homogeneity N-BK7 optical glass, conforming to ISO 10110-3 standards for surface form and surface quality. Designed for collimation, focusing, and beam expansion in visible (VIS), near-infrared (NIR), and short-wave infrared (SWIR) spectral regions, each lens employs a single convex surface with radius of curvature calculated per the lensmaker’s equation to deliver diffraction-limited performance at its specified effective focal length (EFL). The plano surface is polished to λ/4 surface flatness (RMS), while the convex surface maintains λ/2 transmitted wavefront error (TWE) across the clear aperture—ensuring minimal spherical aberration when used with collimated input at the designated focal plane. All lenses are center-mounted and edge-blackened to suppress stray light, with tight tolerances on center thickness (±0.05 mm), diameter (±0.05 mm), and focal length (±1%).
Key Features
- Optical substrate: High-purity N-BK7 (refractive index nd = 1.5168 @ 587.6 nm, Abbe number νd = 64.2), certified for low bubble/inclusion content per MIL-O-13830B
- Surface specifications: 40–20 scratch-dig; λ/4 surface flatness (plano side); λ/2 transmitted wavefront error (convex side)
- Coating options: Uncoated (broadband reflectivity ~4% per surface); VIS broadband AR (Ravg < 0.5% @ 400–700 nm); NIR broadband AR (Ravg < 0.5% @ 650–1050 nm); SWIR broadband AR (Ravg < 0.5% @ 1000–1650 nm)
- Mechanical stability: Edge-blackened with matte black anodized aluminum ring or optional custom mounting flange (e.g., PN350xx-LMxxx-S series)
- Traceability: Each lens carries a unique product ID (e.g., GL11-025-100-VIS) linked to full metrology records including interferometric wavefront maps and spectral reflectance data
Sample Compatibility & Compliance
The M-K9L series is compatible with standard optomechanical platforms including Thorlabs SM-series lens tubes, Newport kinematic mounts, and custom OEM assemblies. Lenses meet RoHS 2015/863/EU and REACH SVHC compliance requirements. Coating performance is verified per ISO 9211-3 for durability (adhesion tested per MIL-C-48497A Method 105), environmental stability (48-hour humidity exposure at 85% RH/85°C per ISO 9211-4), and laser-induced damage threshold (LIDT ≥ 5 J/cm² @ 1064 nm, 10 ns, 20 Hz). For regulated environments, documentation supports GLP/GMP traceability—including calibration certificates, coating spectral reports, and material lot traceability logs.
Software & Data Management
All M-K9L lenses ship with a digital datasheet in PDF format containing measured EFL, BFL, R1, center thickness, edge thickness, and coating spectral curves. Optional integration with Zemax OpticStudio™ and CODE V® via provided .ZAR and .DAT files enables rapid system modeling. For enterprise customers, MiXran provides secure cloud-based access to raw interferometry data (Fizeau interferogram exports), spectral reflectance CSV files, and batch-level QC summaries compliant with FDA 21 CFR Part 11 audit trail requirements.
Applications
- Laser cavity design: Fundamental mode shaping and intracavity focusing for HeNe, diode, DPSS, and fiber lasers
- Imaging systems: Objective elements in low-magnification macroscopes, machine vision lenses, and LED collimators
- Spectroscopy: Entrance/exit optics in monochromators and spectrometer fore-optics where chromatic fidelity is secondary to throughput
- Sensing: Collimation optics in time-of-flight (ToF) distance sensors, structured light projectors, and OCT reference arms
- R&D prototyping: Modular optical benches requiring interchangeable focal lengths with consistent NA and working distance scaling
FAQ
What is the difference between the “GL11-xxx-VIS” and “GL11-xxx-NIR” part numbers?
The suffix denotes the anti-reflection coating spectral band: “VIS” indicates optimized performance from 400–700 nm; “NIR” covers 650–1050 nm; “SWIR” extends to 1000–1650 nm. Uncoated variants carry no suffix.
Can I use an M-K9L lens with a 10.6 µm CO₂ laser?
No. N-BK7 exhibits strong absorption beyond 2.5 µm. For CO₂ applications, fused silica or ZnSe substrates are required—contact MiXran for alternative PCX series.
Is the focal length guaranteed at infinite conjugate ratio?
Yes. All EFL values are measured under collimated input conditions per ISO 10110-2, using a Shack-Hartmann wavefront sensor referenced to a stabilized HeNe laser.
Do you offer custom diameters or focal lengths outside the published range?
Yes. Custom N-BK7 PCX lenses up to Ø200 mm and EFLs from 2 mm to 5 m are available under NDA with lead times of 8–12 weeks.
Are mounting rings included with purchase?
Mounting hardware is sold separately. Compatible lens mounts (e.g., PN35022-LM250-S) are listed in the product table and designed for precise centering within ±5 µm radial runout.
