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AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses

    Buy cheap AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses from wholesalers
     
    Buy cheap AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses from wholesalers
    • Buy cheap AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses from wholesalers
    • Buy cheap AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses from wholesalers
    • Buy cheap AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses from wholesalers
    • Buy cheap AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses from wholesalers

    AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses

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    Brand Name : Wuhan Siwer Optics
    Price : 25-200USD/piece
    Payment Terms : T/T, Western Union
    Supply Ability : 500 pieces/month
    Delivery Time : 4-7 weeks
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    AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses

    Infrared Silicon(Si) Lens

    Silicon (Si) is one of the hardest minerals and optical materials available for use in the NIR (1µm) to about 6µm. Optical quality Silicon is usually doped (5 to 40 ohm cm) to prevent absorption bands within the transmission waveband. Silicon has a lower refractive index than germanium and has a lower density that makes for less weighty optical designs.

    Silicon is ideal for use as windows in the 3 to 5µm (MWIR) waveband and as substrate for optical filters. This waveband (3 to 5µm) is important for the detection of sources radiating at a black body temperature of 700K, such as the muzzle flash from guns, such as sniper rifles and mortar pieces. Every component is individually tested by our highly skilled technicians in our state of the art metrology lab to ensure all components meet our high quality standards. Its transmission is about 50% within the 1 to 6µm and above 50µm, which will mean that anti-reflection coatings are required to improve the transmission.



    Optical Specifications of Silicon Lens

    MaterialSilicon
    AR Coating Range3-5um
    Diameter Tolerance+0.0/-0.1 mm
    Thickness Tolerance±0.1 mm
    Focal Length Tolerance±2%
    Surface Quality60-40 Scratch-Dig
    Surface Flatness
    (Plano Side)
    λ/2 at 633nm
    Spherical Surface Powerc
    (Convex Side)
    1.5λ at 633nm
    Surface Irregularity
    (Peak to Valley)
    λ/2 at 633nm
    Centration<3 arcmin
    Clear Aperture>Ø10.16 mm (Ø1/2" Lenses)
    >Ø20.32 mm (Ø1" Lenses)
    Design Wavelength10.6 μm


    Transmittance of Antireflection coatings:



    Silicon properties:

    Chemical FormulaSi
    Molecular Weight28.09
    Crystal ClassCubic
    Lattice Constant, Å5.43
    Density, g/cm3 at 293 K2.329
    Dielectric Constant for 9.37 x 109 Hz13
    Melting Point, K1690
    Thermal Conductivity, W/(m K) 
    at 125 K598.6
    at 313 K163
    at 400 K105.1
    Thermal Expansion, 1/K 
    at 75 K-0.5 x 10-6
    at 293 K2.6 x 10-6
    at 1400 K4.6 x 10-6
    Specific Heat, cal/(g K) 
    at 298 K0.18
    at 1800 K0.253
    Debye Temperature, K640
    Bandgap, eV1.1
    Solubility in waterNone
    Knoop Hardness, kg/mm21100
    Mohs Hardness7
    Young's Modulus, GPa130.91
    Shear Modulus, GPa79.92
    Bulk Modulus, GPa101.97
    Poisson's Ratio0.28

    Infrared Elements Selection Guide

    Production process

    What's the way of shipping?
    We accept DHL, Fedex, TNT, UPS, SF, EMS etc. If you have your own express account, it's great.


    How to pay?

    (1) T/T, PayPal, West Union,etc

    (2) Bank Fee: West Union-USD30.00(≤USD3000.00),

    T/T-USD20.00+, PayPal-5%. Please consult the local bank.


    What's the deliver time?
    For inventory: the delivery time is around 5 workdays.

    Customized products: the delivery time is 10 to 30 workdays. According to the quantity and precision.

    Can I customize the products based on my need?
    Yes, we can customize the material, specifications and optical coating for your optical components based on your needs. OEM is available.


    Quality AR3-5um Coated Infrared Optical Lens , Optical Silicon Si Lenses for sale
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