FGB37M Dia:25 mm UG11 Colored Glass UV-Passing Filter; SM1-Threaded Mount

The FGB37M is a color glass filter, specifically designed for UV-passing applications, manufactured by Thorlabs. This filter boasts a 25 mm diameter and a thickness of 2 mm, making it a compact yet robust solution for various optical systems. The filter's material is n-bk7 schott, a well-regarded optical glass known for its excellent transmission properties and durability.

The FGB37M has a cut-on wavelength of 335 nm and a cut-off wavelength of 610 nm, making it highly effective in passing wavelengths around 588 nm. This property is particularly useful in applications where specific wavelength control is required, such as in spectroscopy, fluorescence microscopy, or any other field where UV light manipulation is necessary.

The filter features a thin lens shape and is coated on both the front and back with Thorlabs' proprietary coatings, denoted as 'tho fgb37'. This coating enhances the filter's performance and durability, ensuring optimal functionality and longevity.

The FGB37M is SM1-threaded, allowing it to be easily integrated into existing optical systems. This threading also provides the flexibility to combine the filter with other SM1-compatible components, enabling users to create customized optical setups.