86-450 25 mm Dia. Traditional Coated SWIR Longpass Filter; t=1.2mm 850nm

The 86-450 is a 25 mm diameter Longpass Filter, specifically designed for Shortwave Infrared (SWIR) applications, with a catalog number of 86-450. This filter is sourced from the reputable optical vendor, Edmund Optics. The filter's primary function is to allow the transmission of light with wavelengths greater than or equal to 850 nm, while blocking shorter wavelengths, making it ideal for SWIR imaging and sensing applications.

The filter is constructed from borofloat33, a borosilicate glass known for its excellent optical properties and durability. It features a circular shape, a thickness of 1.2 mm, and a diameter of 25 mm, making it compatible with a wide range of optical systems. The filter's geometry is designed in a Thin Lens shape, which can contribute to minimal optical aberrations and distortions.

The 86-450 filter is coated with the EDM 86-449 coating on both the front and back surfaces. This coating enhances the filter's performance by reducing surface reflections and improving transmission, thereby increasing the overall efficiency of the optical system.

The filter's physical data indicates a cut-on wavelength of 850 nm, meaning it begins to transmit light at this wavelength. The cut-off wavelength is 0 nm, indicating that it blocks all wavelengths shorter than this. This specific cut-on wavelength makes the filter suitable for various SWIR applications, including night vision, thermal imaging, and scientific research.

For more information, including pricing and availability, please refer to the provided weblink: https://www.edmundoptics.com/p/25mm-diameter-850nm-cut-on-swir-longpass-filter/28902/. The link also provides detailed specifications, technical drawings, and other resources to help you make an informed decision.