65-642 12.5 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=7.5 mm 540nm

The 65-642 is a mounted traditional coated bandpass interference filter, designed and manufactured by Edmund Optics. This filter is characterized by its circular shape, with a diameter of 12.5 mm and a thickness of 7.5 mm, making it suitable for various optical applications.

The filter's primary function is to allow light within a specific wavelength range to pass through while blocking out light from other wavelengths. In this case, the central wavelength (CWL) is 540nm, with a full width at half maximum (FWHM) of 10nm. The cut-on wavelength is 535nm, and the cut-off wavelength is 545nm, indicating a narrow and precise band of light transmission.

The 65-642 filter features a coating on both the front and back surfaces, identified as 'edm 65-642'. This coating enhances the filter's performance and durability, ensuring optimal light transmission and resistance to environmental factors.

The filter's geometry and physical data make it a versatile component in various optical systems. Its thin lens shape allows for easy integration into existing setups, while its physical data, such as the cut-on and cut-off wavelengths, provide precise control over light transmission.