Bandpass Filter Selection Guide
There are a number of variations of a bandpass filter’s construction, and each has its advantages. Andover offers a variety of options so that you can select what is best-suited for your application. The table below summarizes the major features of the various types of filters listed above, to aid in quickly locating the type that is best suited for your application. If you would like advice from our technical sales staff, please contact us at.
Andover’s Standard Bandpass filters have been the mainstay of the industry for decades. With our proprietary stabilization and sealing method these filters will generally last for 10-20 years in the field. Their longevity, coupled with their low cost and ready availability, make these a great choice for most applications.
In order to make it simple for customers to custom- tailor a bandpass fillter for their application, Andover offers a line of Semi-Custom bandpass filters. Their construction is similar to both the Standard Bandpass and High-Transmitting bandpass filter offerings. We offer a wide selection of wavelengths, bandwidths and sizes, and offer two blocking options.
Andover’s High-Transmitting Bandpass filters are a variant of the Standard Bandpass filter line. Designed for use with PMTs and photodiodes, they employ only dielectric coatings, and have a blocking range tailored to the detector. This results in higher transmission than their fully-blocked counterparts. For your convenience, the high-transmitting bandpass filters are listed in the Standard Bandpass section, and are highlighted for easy identification.
Andover offers one of the broadest ranges of hard- coated narrowband filters in the industry. Our filters feature very high transmission, and dense blocking from UV-1200nm. They are suitable for high-temperature applications.
This line of hard, first-surface coated filters was designed to cover the standard Raman spectroscopy lines. They feature very high transmission over a broad range about the wavelength of interest.