Near-infrared (NIR) bandpass filters transmit a narrow range within the spectrum, typically 700 to 2500 nm, while blocking unwanted wavelengths. Dual bandpass filters work differently: they allow two separated wavelength bands to pass, one of which can be an NIR wavelength, while rejecting the intermediate and surrounding wavelengths. That capability is critical for systems that require dual-mode imaging or multispectral detection. Both filter types are part of our wider range of optical bandpass filters, and both are used to achieve accurate color rendition with anti-reflection coatings for maximum throughput.
NIR and Dual Bandpass Filter Applications and Key Features
Beyond accurate color rendition, dual bandpass filters offer additional features that matter in demanding systems. They reject interfering wavelengths through out-of-band blocking, which improves contrast, system control, and stability. Their hard-coated, single-substrate design holds a 40/20 scratch-dig surface quality for durability and optical clarity, and that single-substrate construction enables more compact, efficient systems in space-constrained applications.
JNS offers both NIR and dual bandpass filters with anti-reflection coatings for maximum transmission, optimized for day and night operation and low-light environments. Common applications include day and night surveillance and Intelligent Traffic Solutions (ITS), NDVI imaging for precision agriculture and drone platforms, NIR spectroscopy and industrial chemical analysis, machine vision inspection and defect detection, and biomedical fluorescence and diagnostic imaging.
Why Engineers Choose JNS for NIR and Dual 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 wavelength, a tight bandwidth, or a dual-band response that no catalog part covers, send us the spec and we will build to it.