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China, Chinese Custom-Designed Infrared Transmitting Sapphire Glass Optical Lens for Thermal Imaging1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Optical Lens InstrumentOptical LensOptical LensCamera Lens
Heyuan Yushi Technology Co., Ltd
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Product DescriptionParameter CategoryParameter NameValue / Description / Typical ValueTest Conditions / NotesBasic InformationProduct NameSapphire Glass Optical WindowMaterial CompositionSingle Crystal α-Aluminium Oxide (Crystal StructureHexagonal Crystal SystemAnisotropic CrystalGrowth MethodKyropoulos Method, Heat Exchanger Method (HEM), Edge-defined Film-fed Growth (EFG)Product FormFlat, Spherical, Aspheric (Customizable)Can be customized to requirementsPhysical PropertiesDensity3.97 - 3.99 g/cm3Mohs Hardness9Second only to diamond (10)Knoop Hardness~2000 kg/mm2Load 100gYoung's Modulus345 GPaShear Modulus145 GPaPoisson's Ratio0.25 - 0.27Compressive Strength>2.0 GPaFlexural Strength> 690 MPaHighly dependent on surface finish qualityThermal PropertiesMelting Point2040 °CMaximum Operating Temperature1900 °C (Vacuum/Inert Gas) / ~1000°C (Air)High temps in air may cause surface devitrificationCoefficient of Thermal Expansion (CTE)@ 25°CThermal Conductivity25 - 35 W/(m·K)@ 20°C, ~30x higher than ordinary glassSpecific Heat Capacity750 J/(kg·K)@ 25°COptical PropertiesCrystal TypeUniaxial Negative CrystalRefractive Index (@587.6 nm)no = 1.768 / ne = 1.760Abbe Number72.2 (based on no)Low dispersionTransmission Range0.15 μm - 5.5 μmDeep UV to Mid-IRInternal Transmittance>85% @ 0.3μm (1mm thick) / >80% @ 4μm (1mm thick)Depends on thickness and coatingRefractive Index HomogeneityBirefringence0.008Crystal orientation must be consideredSurface SpecificationsDiameter/Size Tolerance±0.02 mm or customizedThickness Tolerance±0.01 mm or customizedParallelism< 3 arcsec (High Precision) / < 1 arcmin (Standard)Flatnessλ/10 @ 632.8nm / λ/4 (Standard)MIL-O-13830Surface Finish (Quality)10-5 Scratch-Dig (Standard) / Up to 20-10 (High Grade)MIL-PRF-13830BClear Aperture> 90%Bevel< 0.1mm x 45° (Protective bevel)Chemical & Electrical PropertiesChemical StabilityExcellent. Insoluble in water, resistant to strong acids (e.g., HCl, HNO) and strong bases (slight corrosion at high temps).Water ResistanceClass 1ISO 719Dielectric Constant (@1 MHz)Volume Resistivity@ 25°CDielectric Strength480 kV/cmCoating OptionsAnti-Reflection (AR) CoatingReduces reflection losses, increases transmission in specific bands (e.g., NIR, VIS, specific laser wavelength)Single side R<0.25% @ specified wavelengthHigh Reflection (HR) CoatingAchieves high reflectivity at specific wavelengths (e.g., for laser cavities)R>99.5% @ specified wavelengthOleophobic/ Hydrophobic CoatingAnti-fingerprint, easy to clean, surface protectionWater Contact Angle > 110°Conductive Coating (e.g., ITO)Provides transparent conductivity or electromagnetic shieldingSheet resistance customizableProtective CoatingProvides extra protection against specific chemical environmentsApplication FieldsHigh-End Consumer Electronics: Smartphone camera covers, smartwatch crystals, fingerprint sensor covers.Industrial & Research: High-power laser windows, vacuum viewports, high-pressure/high-temperature viewports, spectrometer components.Aerospace & Defense: Missile domes, EO/IR pod windows, periscopes, armored vehicle viewports.Medical Devices: Endoscope protection lenses, surgical device windows, biosensors.Semiconductor Industry: Viewports for wafer processing equipment.CertificationsPacking & Delivery
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