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Infrared Optical Filter Glass HWB760-850

Focus on Colored Glass Melting and Optical Filters Manufacturing for Over 30 years'.

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  • Product description
  • Our Products Infrared Optical Filter Glass HWB760-850 series are respectively equivalent to longpass filters RG780, RG830 of Germany Schott and infrared transmitting filters IR series of Japan Hoya.

     

    The IR Optical Glass HWB760-850 Series are Infrared transmission visible light absorption cut-off optical filter. These longpass filter glass are designed to transmit wavelengths above 760-850nm. Any wavelengths that are shorter than that point are blocked. Typical applications include fluorescent spectroscopy systems. Additionally, they are commonly used in conjunction with shortpass filters for bandpass filtration applications. Also, these IR longpass filters are widely used in light sources for purposes such as infrared testing systems and night vision instrument. 

     

    Main Application: Camera Lens, Medical Equipment, Security Device, Night Vision Device, etc

     

    Characteristics of IR Optical Glass

    TypeThickness(mm)A[2856k]D65Chemical StabilityNDα×10-7
    (/℃)
    Tg
    (℃)
    Ts
    (℃)
    S
    xyYxyYDADW
    HWB7603      541.5321115345922.77
    HWB7803      541.5321115345922.77
    HWB8003      541.520985596153.05
    HWB8303      541.520985596153.05
    HWB8503      541.520985596153.05

     

    Technical Standard of IR Optical Glass

    Type

    Thickness(mm)

    λtj
    (nm)
    λ0
    (nm)
    Tλ0
    (%)
    K
    HWB760
    3
    760±10
    850
    ≥83.6
    ≥0.6
    HWB780
    3
    780±10
    900
    ≥83.6
    ≥0.5
    HWB800
    3
    800±10
    900
    ≥83.6
    ≥0.5
    HWB830
    3
    830±10
    930
    ≥83.6
    ≥0.5
    HWB850
    3
    850±10
    950
    ≥80.0
    ≥0.5

     

    Quality Level of IR Optical Glass

    Type

    Bubble

    Stripe

    Stress

    HWB760
    C-B
    3C
    3
    HWB780
    C-B
    3C
    3
    HWB800
    C-B
    3C
    3
    HWB830
    C-B
    3C
    3
    HWB850
    C-B
    3C
    3

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