Optical bandpass filters are designed to transmit a well-defined band of energy in the electromagnetic spectrum. Andover offers one of the most extensive listings of standard "off-the-shelf" interference filters in this industry. Wavelengths range from the ultraviolet through the near infrared and include many of the primary laser, mercury, biomedical and analytical spectral lines. Standard sizes include 12.5mm Ø, 25.0mm Ø and 50.0mm Ø. All Andover filters are mounted in black anodized metal rings which provide an added measure of protection against chipping, scratching and high humidity conditions. In addition, all filters have their part number permanently engraved on their edge and each filter is supplied with a calibrated spectral bandpass data curve at no-charge. Custom spectral data is available and will be quoted upon request. Custom shapes and sizes are readily available.

Our exceptionally high level of stock, and unique processing methods, allow us to ship most items within two days after receipt of an order. If required, rush orders can usually be shipped within one day. All out-of-stock items will be shipped within two weeks after receipt of a purchase order.

We also offer many optical bandpass filters in hard-coated and high-transmitting versions. Still can't find what you're looking for? Check our surplus listings for more options.