FGL665S 2 in x 2 in Square RG665 Colored Glass Filter; 665nm Longpass

The FGL665S is a 2 in x 2 in Square RG665 Colored Glass Filter, specifically designed for longpass applications with a cut-on wavelength of 665nm. This filter is sourced from the renowned optical component manufacturer, Thorlabs, and boasts a robust construction that ensures high-performance and durability.

The filter is made from N-BK7 Schott glass, a material known for its excellent optical properties and resistance to environmental factors. It features a rectangular base shape, with a width and height of 50.8mm each, and a thickness of 2mm, making it suitable for a wide range of optical systems.

The FGL665S filter is coated with a proprietary coating, denoted as 'tho fgl665' on both the front and back surfaces. This coating enhances its optical performance, particularly in terms of transmission and reflection, thereby ensuring accurate and reliable filtering of incident light.

The physical data of the filter indicates a cut-on wavelength of 665nm, meaning it starts transmitting light from this wavelength and beyond. The cut-off wavelength is 0nm, indicating that it transmits all wavelengths longer than 665nm.

In terms of geometry, the filter has a thin lens shape, which is beneficial for applications that require compact and lightweight optical components. The filter's catalog number is FGL665S, and it is currently in stock, as indicated by its weblink status.

For more detailed information and specifications, users are encouraged to visit the product's webpage at https://www.thorlabs.com/thorproduct.cfm?partnumber=FGL665S.