UV bandpass filters selectively transmit ultraviolet light within a specific range while blocking the visible and infrared wavelengths on either side. The ultraviolet spectrum spans roughly 10 to 400 nm, and our UV bandpass filters cover the deep-UV through near-UV portion of it, from about 240 to 400 nm, with center wavelengths matched to common UV excitation and emission lines. That makes them essential for isolating a UV signal in analytical and imaging work, where stray visible or infrared light would otherwise wash it out. Built on fused silica, sapphire, and Borofloat substrates, they are part of our wider range of optical bandpass filters, engineered for precise wavelength control across the spectrum.
UV Bandpass Filter Features and Applications
JNS UV filters are optimized for stability, durability, and precise wavelength isolation. Each filter pairs a specific UV transmission window with high out-of-band blocking, an anti-reflection (AR) coating for maximum UV throughput, and hard-coated construction held to a 40/20 scratch-dig surface quality.
They are available in threaded or unmounted configurations for easy integration into an existing optical assembly. Because they hold their optical clarity and spectral performance even under high-energy UV exposure, these filters are frequently specified for PCR and life science diagnostic instruments, semiconductor and surface inspection, forensic imaging, UV curing and sterilization systems, and UV fluorescence and DNA analysis.
Why Engineers Choose JNS for UV Bandpass Filters
JNS combines in-house glass processing with advanced coating capabilities, so we control the part from raw substrate to finished filter. We supply OEMs, integrators, and research teams across defense, life sciences, industrial inspection, and consumer optics, and we can move from prototype samples to production volume on the timelines those programs run on. If your design calls for a specific UV transmission window, a tight bandwidth, or a custom mount that no catalog part covers, send us the spec and we will build to it.