Optical bandpass filters are designed to transmit a specific waveband.  They are composed of many thin layers of dielectric materials, which have differing refractive indices to produce constructive and destructive interference in the transmitted light

UV curing systems use ultraviolet radiation to initiate reactions and cure adhesives, coatings and other UV curable resin products.

Laser protective eyewear includes glasses and goggles designed to filter out harmful radiation from lasers

UV light systems provide ultraviolet light for identification, tracing, curing, disinfection or processing applications.

Comb generators create harmonic frequencies from which one frequency can be selected with a narrow filter and filtered out

Eyewear includes safety devices, such as safety goggles, worn to protect the eyes.

Web controllers maintain control functionality over processes with web or sheet rollers.  Control functionality includes maintaining tension of the web, centering on the track, and material feed rates.

Solar simulators and light sources produce a simulated solar spectrum for plant growth, material-degradation simulations, weathering tests for coatings, photovoltaic (PV) cell testing, sunblock evaluations, and window transmission studies.

RF filters and microwave filters are devices that pass or reject signals by frequency. Basic types include bandpass filters, band reject filters, low pass filters, and high pass filters

Industrial air filters reduce the number of particles in the air that passes through them. 

Industrial filtration equipment is used to filter, thicken or clarify a mixture of different elements

Liquid filtration elements are used to remove impurities from liquids. They are used in water treatment systems and fluid processing applications.

Filtration media and elements are designed to remove suspended particles from a process stream. This product area includes bulk filter media, cartridges, housing-only products, and housing and filter assemblies. 

Active filters are electronic filers that use active components such as voltage amplifiers or operational amplifiers. The amplifier shapes and stabilizes the behavior of the filter, and serves as a buffer interface to the driven component

Display filters and films are designed to filter, enhanced and/or protect monitors or flat panel displays (FPD