The FB840-10 is a Bandpass Filter from Thorlabs, designed with a circular base shape and a diameter of 1 inch (25.4 mm). It is made of soda lime ru clear material and has a thickness of 3.5 mm. This filter is specifically designed for a central wavelength (CWL) of 840 nm, with a full width at half maximum (FWHM) of 10 nm.
The filter's physical data includes a cut-on wavelength of 835 nm and a cut-off wavelength of 845 nm. The coating on both the front and back of the filter is 'tho fb840-10'. The filter's shape is that of a thin lens.
According to the vendor's information, this item is in stock and the web link provided is valid. The catalog number for this item is FB840-10.