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Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

Wuhan Siwer Optics Co.,Ltd
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    Buy cheap Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings from wholesalers
     
    Buy cheap Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings from wholesalers
    • Buy cheap Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings from wholesalers
    • Buy cheap Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings from wholesalers
    • Buy cheap Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings from wholesalers

    Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

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    Brand Name : Wuhan Siwer Optics
    Price : 800USD/piece
    Payment Terms : T/T, Western Union
    Supply Ability : 500 pieces/month
    Delivery Time : 5-7weeks
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    Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

    Germanium (Ge) wedge prisms

    The refractive index of single crystal germanium material is higher than 4.0, and the wedge prism made of single crystal germanium has strong deflection ability to infrared light.

    The surface reflectivity of germanium prism is about 36%, so we need to make antireflection coatings on the prism surfaces

    Germanium material is softer than other optical materials, and there are many surfaces should be polished,so the surface quality of germanium prism is easier to be destroyed in the processing.
    Because germanium material does not penetrate the visible light, it can not use the self-collimation method to measure the angular accuracy as other materials'prisms.
    These factors lead to high production cost of germanium prism.


    In infrared system, it is sometimes necessary to deflect the infrared light (especially the light with 8-14um wavelength) at a certain angle, and germanium prism is very suitable for it.

    Since the Refractive index of single crystal germanium is 4.0, its critical angle is only 14.5 degrees, it is very conducive to the propagation of light beam in the prism.

    We have customized various germanium prisms for many university laboratories and other similar research departments. We have many years of experience in this field.

    We can customize germanium prisms for you.Or you just need to tell us what you need to achieve,Our engineers can recommend or design suitable prisms for you.
    More details please contact us.



    Production Line



    Optical Properties of Germanium Prism

    MaterialSingle Crystal Germanium
    AR Coating Range3-5um,8-12um,3-11um
    Reflectance over
    AR Coating Range @ 0° AOI

    Ravg < 2%,3-5um or 8-12um

    Ravg<5%,3-11um

    Transmission over
    AR Coating Range @ 0° AOI
    Tavg > 94%,3-5um or 8-12um
    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:



    Germanium properties:

    Chemical FormulaGe
    Crystal FormPoly or Single Crystal
    Crystal ClassCubic
    Resistivity, Ohm*cm0.01-40
    Lattice Constant, Å5.66
    Molecular Weight72.6
    Density, g/cm3 at 300 K5.33
    Dielectric Constant for 9.37 x 109 Hz at 300 K16.6
    Melting Temperature, K1210
    Thermal Conductivity, W/(m K) at 293 K59
    Thermal Expansion, 1/K at 298 K6.1 x 10-6
    Specific Heat, cal/(g K) at 273-373 K0.074
    Debye Temperature, K370
    Bandgap, eV0.67
    Solubility in waterNone
    Knoop Hardness, kg/mm2800
    Mohs Hardness6.3
    Young's Modulus, GPa102.66
    Shear Modulus, GPa67.04
    Bulk Modulus, GPa77.86
    Poisson's Ratio0.278


    Infrared Elements Selection Guide


    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.


    Product Tags:

    right angle prism

      

    ir prism

      
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