Product Name: Silicon Monocrstal Large Convex Lens 45mm Biconvex Lens, Optical Lens Model NO.: D5~D300 Coating: Ar Bbar Customized: Customized Certification: RoHS, ISO9001 Lenses Color: Green Material: Si Shape: Ball, Hemisphere Transmittance: >95% Type: Convex Lens Usage: Optical Trademark: ICC Origin: Qinhuangdao China HS Code: 9001909090 Product Description Silicon OpticsSilicon Optical Components are used in a variety of infrared applications operating in the 1.2 - 7μm wavelength range, including NIR imaging or IR spectroscopy. Silicon's low density (2.329 g/cm3) is ideal for use in weight-sensitive applications. Silicon features a Knoop hardness of 1150, making Silicon Optical Components harder, less brittle alternatives to comparable Germanium Optical Components.ParameterQinhuangdaoIntrinsicCrystalTechnologyCo.,Ltd has the ability to process CaF2SphericalDouble-Convex Lenses, as also as Precisionbi-convex lenses.ParameterDesignWavelength632.8nmDiameterTolerance+0.0/-0.1mmThicknessTolerance+/-0.1mmFocalLengthTolerance+/-1%RadiusTolerance+/-0.1mmSurfaceQuality60-40orbetterSurfaceAccuracyλ/4 @ 632.8nm or betterParallelism<3arcminClearAperture>90%Bevel<0.2×45°Chips<0.35mmCentererror<3arcmin