Longpass Filters

Discover our premium Longpass Filters, designed for accurate wavelength selection in optical systems. Ideal for microscopy, spectroscopy, and laser applications, our filters provide superior transmission, excellent blocking of shorter wavelengths, and consistent performance. Explore our wide range of sizes and specifications to meet your precision optical needs.

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Infrared (IR) Longpass Filters

In infrared optical systems, filters play a critical role in precisely controlling the passage of light at specific wavelengths to optimize imaging quality or signal detection. An infrared Longpass filter is an optical element that allows the transmission of long-wave infrared light (usually light with a wavelength greater than a certain cutoff value, such as 5μm, 8μm, or 10μm) while blocking short-wave radiation. These filters are widely used in thermal imaging, gas detection, military reconnaissance, industrial monitoring and scientific research.

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Infrared Optical Filter Bandpass Infrared Filter IR Cut Off Filter

Longpass Filters, also known as Longpass Edge Filters, are designed to transmit wavelengths greater than the cut-on wavelength of the filter.

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