86-445 12.5 mm Dia. Traditional Coated SWIR Longpass Filter; t=1.2mm 700nm

The 86-445 is a Traditional Coated Shortwave Infrared (SWIR) Longpass Filter, boasting a 12.5 mm diameter and a thickness of 1.2mm. This filter is sourced from the reputable vendor, Edmund Optics, and is designed to allow transmission of wavelengths longer than 700nm while blocking shorter wavelengths.

The filter is constructed from borofloat33, a borosilicate glass known for its excellent thermal stability and resistance to thermal shock. This makes it an ideal choice for applications that require consistent performance across a wide temperature range.

The 86-445 features a circular geometry, a common shape in optical elements due to its ease of alignment and integration into optical systems. The filter's coating, applied to both the front and back surfaces, is Edmund Optics' proprietary edm 86-445 coating. This coating enhances the filter's performance by reducing surface reflections and improving transmission efficiency.

The filter's longpass characteristic is particularly useful in applications such as night vision, thermal imaging, and spectroscopy, where the detection of longer wavelengths is crucial. The 700nm cut-on wavelength ensures that only infrared light is transmitted, filtering out visible light and unwanted shorter wavelengths.