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Short Wave Pass Interference Filters - High Transmittance from China Suppliers | Custom-Made by Our Factory
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Short Wave Pass Interference Filters - High Transmittance from China Suppliers | Custom-Made by Our Factory

Short Wave Pass Interference Filters - High Transmittance from China Suppliers | Custom-Made by Our Factory

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The short-wave pass filter is designed to transmit short-wave wavelengths while effectively blocking long-wave wavelengths, ensuring optimal isolation of long waves. Unlike traditional colored optical glass filters, our short-wave pass filters, developed by our factory in China, offer several advantages, including a wide cut-off bandwidth, deep cut-off depth, and high conversion steepness. With a transmittance rate that can reach up to 95% and a remarkable cutoff depth of up to OD4, these filters provide a wide spectral cutoff range. As leading suppliers in the industry, we offer a variety of standard filter products in stock, as well as customized solutions tailored to your specific needs.

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    Product Details

    🔍 Product Overview
    The short-wave pass filter is a cut-off filter in the interference filter. The cut-off filter is divided into a long-wave pass filter and a short-wave pass filter, that is, the light beam in a certain wavelength range is required to transmit and deviate from this. The wavelength of the beam changes to cut-off. Generally, we call the filter that reflects (cut-off) the short-wave region and transmits the long-wave region a long-wave pass filter. On the contrary, the short-wave direction is transmitted, while the long-wave direction is cut off, which is used for isolation. The function of long wave is called short wave pass filter.
    ⚙ Product Specifications
    • 🔧Process:  Ion Assisted Dura
    • 🌈Wavelength:  SP450, 495, 540, 650, 720, 855, 920, etc.
    • 📈Average Transmittance:  >90%
    • 🔲Steepness:  90%～10% <10nm
    • 🚫Cutoff Depth:  OD > 4
    🌎 Application Areas
    ⭐  Widely used in optical experiments, spectral measurement, industrial measurement, medical analysis, biochemical testing, scientific instruments and other fields.
    Parameter Details
    Process (IAD Hard Coating)
    Wavelength SP450, 495, 540, 650, 720, 855, 920, etc.
    T avg. >90%
    Slope 90%～10% <10nm
    Blocking OD > 4
    📊 Spectrum
    Short-Wave Pass Filter Spectrum Chart
    🏭 Production Process
    Short-Wave Pass Filter Production Process
    ❓ Frequently Asked Questions
    Q What is a short-wave pass filter?
    A short-wave pass filter is a type of interference cut-off filter that transmits light in the short-wave direction while blocking (cutting off) light in the long-wave direction. It is the optical counterpart of a long-wave pass filter, which does the opposite.
    Q What wavelengths are available for the short-wave pass filter?
    The short-wave pass filter is available in a range of standard wavelengths including SP450, SP495, SP540, SP650, SP720, SP855, SP920, and more. Custom wavelengths may also be available upon request.
    Q What coating process is used for this filter?
    The filter uses IAD (Ion Assisted Deposition) Hard Coating technology, which ensures high durability, excellent adhesion, and stable optical performance across a wide range of environmental conditions.
    Q What is the typical transmittance and cutoff performance?
    The average transmittance in the pass band is greater than 90%, with a steep transition slope of 90%～10% within less than 10nm. The cutoff depth reaches OD > 4, ensuring strong blocking of unwanted wavelengths.
    Q In which industries or applications can this filter be used?
    Short-wave pass filters are widely applied across many fields, including optical experiments, spectral measurement, industrial measurement, medical analysis, biochemical testing, and scientific instruments. They are essential components wherever precise wavelength selection is required.
    Q What is the difference between a short-wave pass filter and a long-wave pass filter?
    A long-wave pass filter reflects (blocks) the short-wave region and transmits the long-wave region, while a short-wave pass filter does the opposite — it transmits the short-wave region and cuts off the long-wave region. Both are types of interference cut-off filters used for optical isolation and wavelength selection.