39-338 25 mm Dia. Hard Coated OD 4.0 5nm Bandpass Filter; t=3.5 mm 266nm

The 39-338 Bandpass Filter, offered by Edmund Optics, is a circular filter with a 25 mm diameter and a thickness of 3.5 mm. This filter is specifically designed for use with a central wavelength (CWL) of 266 nm, making it suitable for applications that require precise wavelength selection within the ultraviolet spectrum.

The filter is hard coated with a bandpass of 5 nm, ensuring a high level of transmission for the specified wavelength while effectively blocking out unwanted light. This feature is particularly beneficial in applications such as fluorescence microscopy, spectroscopy, and other scenarios where narrowband wavelength selection is critical.

The filter's geometry is defined by a cut-on wavelength of 263.5 nm and a cut-off wavelength of 268.5 nm. This means that the filter begins to transmit light at 263.5 nm and stops transmitting at 268.5 nm, further enhancing its ability to select the desired wavelength.

The front and back surfaces of the filter are coated with EDM 39-327, a coating that enhances the filter's performance and durability. The filter's shape is that of a thin lens, which contributes to its compact design and ease of integration into various optical systems.

According to the vendor's information, this item is currently in stock, ensuring quick delivery and minimal lead times. The filter's catalog number is 39-338, and it can be found on the Edmund Optics website for further investigation and purchase.