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    HOME > Optical Filters >
    IR-cut filters/Hot mirror

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    IR-Cut Filters / Hot Mirrors (Infrared Blocking Optics)

    IR-cut filters (also known as hot mirrors, infrared blocking filters, or heat-reflecting dielectric optics) are precision optical components engineered to transmit the visible light spectrum while highly reflecting unwanted near-infrared (NIR) thermal and optical radiation.

    Functions:
    Uses multi-layer inorganic dielectric interference coatings deposited via PVD-EBGE on optical glass or blue glass substrates to maintain high average transmittance in the visible band ($T \ge 90\%–95\%$, 400 nm–680 nm) while reflecting near-infrared wavelengths (700 nm–1100 nm+) back toward the light source. This prevents image sensor chromatic distortion, protects internal optical components from thermal overload, and cuts unwanted UV radiation.

    1. High visible light transmittance across 400 nm to 680 nm.
    2. Complete UV suppression via dielectric reflection or glass absorption (<380 nm).
    3. High near-infrared reflection and thermal cutoff (700 nm to 1100 nm+).

    Applications:
    Webcams
    Medical endoscopes
    Surveillance CCTV cameras
    Automotive vision modules
    Projector illumination optics
    Mobile phone camera lens assemblies
    CMOS/CCD digital camera image sensors
    #IRCUT650  #IRCUT710  #UVIRCUT+AR-385/725
    #UVIRCUT+AR-400/730  #IRCUT880  #DN650/850 
    #Information and Notes

    IR-cut filters/Hot mirror

    ITEM NO: IRCUT650

    Spectral Characteristics

    T50%=650 +/-10nm

    Tave>88% @ 430-620nm

    Tave<3% @ 720-1050nm

    Physical Characteristics

    Glass: 0.4, 0.55, 0.7, 1.1mm

    Square: 3*3 - 160*160mm

    Round: Dia3 - 150mm

    Resistant Temperature

    Glass: 150℃

       IR-cut filters/Hot mirror

    ITEM NO: IRCUT710

    Spectral Characteristics

    T50%=710 +/-15nm

    Tave>88% @ 430-660nm

    Tave<3% @ 780-1050nm

    Physical Characteristics

    Borosilicate: 1.1, 2.0, 3.0mm

    Glass: 1.1mm

    Tempered Glass: 2.0, 3.0mm

    Square: 3*3 - 310*320mm

    Round: Dia3 - 300mm

    Resistant Temperature

    Glass: 150℃

    Tempered Glass: 250℃

    Borosilicate: 450℃

       UVIR-cut filters/Hot mirror

    ITEM NO: UVIRCUT+AR-385/725

    Spectral Characteristics

    Tave<1% @ 200-370nm

    Tave>95% @ 430-680nm

    Tave<3% @ 800-1000nm

    Physical Characteristics

    Borofloat: 1.1, 2.0, 3.3mm

    Glass: 1.1mm

    Square: 3*3 - 310*320mm

    Round: Dia3 - 300mm

    Resistant Temperature

    Glass: 150℃

    Borosilicate: 450℃

       IR-cut filters/Hot mirror

    ITEM NO: UVIRCUT+AR-400/730

    Spectral Characteristics

    Tave<2% @ 200-385nm

    Tave>95% @ 430-680nm

    Tave<3% @ 800-950nm

    Physical Characteristics

    Borosilicate: 1.1, 2.0, 3.0mm

    Glass: 1.1mm

    Square: 3*3 - 310*320mm

    Round: Dia3 - 300mm

    Resistant Temperature

    Glass: 150℃

    Borosilicate: 450℃

       IR-cut filters/Hot mirror

    ITEM NO: IRCUT880

    Spectral Characteristics

    T50%=880 +/-15nm

    Tave>90% @ 430-850nm

    Tave<5% @ 950-1100nm

    Physical Characteristics

    Borosilicate: 1.1, 2.0, 3.0mm

    Glass: 1.1mm

    Tempered Glass: 2.0, 3.0mm

    Square: 3*3 - 310*320mm

    Round: Dia3 - 300mm

    Resistant Temperature

    Glass: 150℃

    Tempered Glass: 250℃

    Borosilicate: 450℃

       IR-cut filters/Hot mirror

    ITEM NO: DN650/850 (For day and night)

    Spectral Characteristics

    T50%=650 +/-10nm

    Tave>88% @ 420-620nm

    Tave<3% @ 720-800nm

    Tave>80% @ 845-855nm

    Tave<3% @ 950-1050nm

    Physical Characteristics

    D263: 0.21, 0.3mm

    Glass: 0.55, 0.7, 1.1mm

    Square: 3*3 - 310*320mm

    Round: Dia3 - 300mm

    Resistant Temperature

    Glass: 150℃

    D263t: 250℃
     
    Information and Notes

    1. IR-cut filters feature precision thin-film dielectric interference coatings comprising 36 to 56 layers vacuum-deposited on optical glass substrates, achieving sharp NIR cut-off edges and high visible transmittance.

    2. Spectral transmission curves are optimized for normal incidence (0° angle of incidence, AOI). Operating at larger incidence angles causes a blue shift, shifting spectral edge characteristics toward shorter wavelengths.

    3. Manufactured using Physical Vapor Deposition with Electron Beam Gun Evaporation (PVD-EBGE) technology, ensuring high coating density, excellent substrate adhesion, and superior environmental durability.

    4. Custom dimensions, non-standard shapes, and tailored spectral coating bandpasses are available upon request.

    5. Spectral transmittance curves represent measurements captured at normal incidence (0° angle of incidence).

    6. Transmittance curves reflect actual physical sample measurement data and are subject to minor manufacturing tolerances between production lots while remaining strictly within engineering spectral limits.

    7. B270, D263T, and BOROFLOAT 33 are registered trademarks of SCHOTT AG.

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