The 14-540 is a 50 x 50 mm SCHOTT RG850 Black Colored Glass Longpass Filter, designed to cut on at 850nm and with a cut off of 0. Sourced from Edmund Optics, this filter is a Color Glass type, featuring a rectangular base shape and a thickness of 3mm.
The filter's geometry is defined by a width of 50mm and a height of 50mm, making it a square shape. The physical data of this filter is noteworthy, with a cut-on wavelength of 850nm, indicating its ability to transmit light at this wavelength and above. The cut off is 0, suggesting that it blocks all wavelengths below this point.
The coating of this filter is consistent on both the front and back, with the designation 'edm 14-540'. This filter is classified as a Thin Lens, and according to the vendor's information, it is currently in stock and available for purchase.
For more detailed information, please refer to the vendor's website at https://www.edmundoptics.com/p/schott-rg850-50mm-sq-3mm-thick-colored-glass-longpass-filter/42565/.