Optical Glass Components
Periscope Prism
Infrared Optical Elements
Laser Lens
English
Oct 25-2024
Magnesium fluoride crystals have excellent optical and mechanical properties. lts transmittance wavelength is from 0.11um~7.5um, The optical components such as windows, lenses and prisms made by Yasi are widely used in ultraviolet and infrared opticalsystems which requires durability under different environments.
| Name | Index of Refraction (nd) | Abbe Number (vd) | Density(g/cm3) | CTE (x 10-6/°C) | dn/dT (x 10-6/°C) | Knoop Hardness | Properties /Typical Applications |
| Magnesium Fluoride (MgF2) | 1.413 | 106.2 | 3.18 | 13.7 | 1.7 | 415 | High CTE,Low Index of Refraction,Good Transmission from Visible to MWIR Used in Windows,Lenses,and Polarizers that Do Not Require Anti-Reflection Coatings |
| Technical Requirement | Commercial Grade | Precision Grade | High Precision |
| Size range | 1-600mm | 2-600mm | 2-600mm |
| Dimensional tolerance | ±0.1mm | ±0.025mm | ±0.01 mm |
| Thickness tolerance | ±0.1mm | ±0.025mm | 土0.01mm |
| Parallelism | ±3' | ±15'' | ±5' |
| Surface quality | 60-40 | 40- 20 | 20-10 |
| Surface accuracy | 1.0λ | λ10 | λ/20 |
| Bevelling | 0.1 -0.5mm*45° | ||
| Substrate | MgF2 |
UV Transparency: MgF2 windows offer high transparency in the ultraviolet spectrum, crucial for UV imaging and lithography applications.
Optical Clarity: Provides clear vision for precise optical alignment and calibration.
Low Dispersion: Minimizes chromatic aberration, ensuring high-quality imaging and accurate light dispersion.
Chemical Stability: MgF2 glass material not only has low refractive index and low dispersion properties, but also remains stable in extreme temperatures and harsh environments.
