FGL400 Dia:25 mm GG400 Colored Glass Filter; 400nm Longpass

The FGL400 is a color glass filter manufactured by Thorlabs, a leading global supplier of photonics equipment. This filter, with a catalog number FGL400, is a circular component designed with a 25 mm diameter and a thickness of 2 mm. It is made of high-quality n-bk7 Schott material, ensuring durability and reliability.

The FGL400 filter is designed for longpass applications, specifically for wavelengths of 400 nm. It features a cut-on wavelength of 400 nm, meaning it starts transmitting at this point and continues to transmit for longer wavelengths. The cut-off wavelength is 0 nm, indicating that it transmits all wavelengths shorter than 400 nm.

The filter's coating is another notable feature. Both the front and back surfaces are coated with tho fgl400b, a coating that enhances the filter's performance and longevity. The filter's shape is that of a thin lens, making it suitable for a wide range of optical applications.

According to Thorlabs' website, the FGL400 is currently in stock, ensuring quick delivery for your optical project needs. For more information, you can visit the product page at https://www.thorlabs.com/thorproduct.cfm?partnumber=FGL400.