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One part of the optical spectrum is selectively transmitted by an optical filter while other parts are rejected. Edmund Optics offers optical filters that are widely used in microscopy, spectroscopy, chemical analysis, and machine vision. These filters come in a range of filter types and precision levels.
In this application note, important specifications are defined, the many filter types offered by Edmund Optics are described, and the various technologies used to make EO filters are described.
While filters and other optical components have many similar features, there are some specifics that are only applicable to filters that need to be understood in order to choose the right filter for your application.
Optical filters are objects that selectively transmit light of various wavelengths. They are commonly made of plate glass or plastic. In general, filters can be categorised as dichroic or absorptive depending on how they block undesired wavelengths. Comparatively speaking, absorptive filters are less accurate than dichroic ones.
Due to this, they are frequently employed in applications that call for the transmission of a wide range of wavelengths as well as those that require the blocking of short wavelengths while transmitting longer ones.
Their primary advantages include inexpensive price, stability in a wide range of settings, and insensitivity to lighting angle.
Poor long-term temperature resistance and subpar performance when employed in precision applications are disadvantages. Absorptive filters, particularly those made of gelatin, are useful for a variety of tasks, including optical microscopy.
The Global Industrial optical filter market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
high performance optical filters are used in many different types of applications and industries.ability to offer a wide range of wavelength selection, size, shape & thickness, and surface quality in production optical filter volumes of hundreds to hundreds of thousands per customer annually is made possible by the versatility of our coating processes, shaping and metrology equipment, part marking, and packaging offerings.
We create unique thin film optical filters in collaboration with the optical engineers and scientists of OEM instrument manufacturers that are optimised for the optical path of the instrument architecture and the analysis to be done. This collaborative approach enables each instrument manufacturer to receive the best cost/performance value.
