The FS-w-25.4-3 is a flat window type optical element, sourced from Alkor Technologies, with a circular base shape and a diameter of 25.4 mm. This window has a thickness of 3 mm and is made of UVFS material, specifically identified as UVFS Mal- 1965.
The item is designed to operate at a wavelength of 633 nm, making it suitable for a range of optical applications. Its geometry is that of a thin lens, further expanding its potential uses.
Notably, this particular model is uncoated, which means it does not have any additional layers applied to its surface to alter its optical properties. This can be beneficial in certain applications where minimal interference with the light path is desired.
For more information, including pricing and availability, please refer to the vendor's website at http://www.alkor.net/FusedSilica_windows.html. The link has been verified and the product is currently in stock.