65-128 25 mm Dia. Hard Coated OD 4.0 10nm Bandpass Filter; t=3.5 mm 337nm

The 65-128 is a Bandpass Filter with a diameter of 25 mm, sourced from the reputable optical vendor, Edmund Optics. This filter is specifically designed for use with a central wavelength of 337nm, making it ideal for applications that require precise wavelength selection within this range.

The filter is constructed with a hard coating on both the front and back surfaces, denoted as 'edm 65-067'. This coating enhances the filter's durability, making it resistant to scratches and other forms of damage, thereby ensuring longevity and reliable performance.

The filter's geometry is defined by a diameter of 25 mm and a thickness of 3.5 mm. This thickness is often referred to as 't' in optical specifications. The 't' value is crucial in determining the filter's optical path length, which can significantly impact the filter's performance in certain applications.

The filter's physical data includes a cut-on wavelength of 332nm and a cut-off wavelength of 342nm. These values are important in determining the filter's spectral range and its ability to block unwanted wavelengths. The cut-on and cut-off wavelengths, combined with the central wavelength, give this filter a 10nm bandpass.

The filter's shape is defined as a 'Thin Lens', which is a common shape for optical filters. This shape allows for easy integration into optical systems that require precise wavelength selection.

The filter is currently in stock and available for purchase through the provided weblink. Detailed product information, including pricing and shipping details, can be found on the vendor's website.