490FDL25 25 mm Dia. Longpass Dichroic Filter 490nm

The 490FDL25 is a Dichroic Filter, specifically designed for longpass applications with a cut-on wavelength of 490nm. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components. The filter is designed with a circular geometry, having a diameter of 25mm and a thickness of 1.1mm, making it suitable for a wide range of optical systems.

The filter is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and high damage threshold. The filter's coating, kni 490fdl-0, is applied on both the front and back surfaces, enhancing its performance and durability. This coating ensures a sharp cut-off at the specified wavelength, allowing only longer wavelengths to pass through.

The 490FDL25 is currently in stock and available for immediate purchase through the vendor's website. The filter's specifications, including its wavelength, geometry, and physical data, make it an ideal choice for various optical applications requiring longpass filtration.