Ultra Bandpass Filters
Ultra Bandpass Filters

Through a combination of precision wavelength control, ultra-steep edges, deep blocking, and the industry’s highest transmission levels, Alluxa’s ULTRA Series of hard-coated, thin-film optical bandpass filters will optimize the performance of a variety of instruments.




Key Features


Depending on the wavelength ranges and requirements of your system, ULTRA Series bandpass filters can be custom designed to meet one or more of the following challenging specifications:


    Up to 99% transmission for passbands in the visible range

    Up to OD10 wide range out of band blocking by design

    Edge transitions as steep as 0.5% of CWL from 50% T to OD6

    CWL at any wavelength from the UV to the mid IR (~250 nm to 13 µm)

    Tolerances as tight as ± 0.25% of CWL

    TWE as low as 0.01 wave RMS / inch measured at 632.8 nm


ULTRA Series multiband filters can be designed with over 10 transmission bands, greater than OD8 blocking between bands, steep edges, and up to 98% transmission. They are perfect for use as excitation or emission filters in fluorescence techniques that require the simultaneous detection of multiple fluorophores in a single sample.