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China, Chinese High Temperature Solder Sealed Sapphire Glass Lens for Hermetic Electronic Packages1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Optical Lens InstrumentOptical LensHigh-Transparency Optical LensUltra-Clear Imaging 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). Not resistant to (HF) and hot Phosphoric Acid.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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