65-640 12.5 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=7.5 mm 532nm

The 65-640 is a Bandpass Filter, specifically designed for use in optical systems that require a narrow bandwidth transmission. Sourced from Edmund Optics, this filter features a circular shape with a 12.5 mm diameter and a thickness of 7.5 mm, making it suitable for a wide range of applications.

The filter is designed to transmit light at a central wavelength (CWL) of 532 nm, with a full width at half maximum (FWHM) of 10 nm. This means it allows a narrow range of wavelengths around 532 nm to pass through while blocking other wavelengths. The cut-on wavelength is 527 nm, and the cut-off wavelength is 537 nm, further emphasizing its bandpass characteristics.

The 65-640 filter is coated on both the front and back surfaces with EDM 65-640, a proprietary coating developed by Edmund Optics. This coating enhances the filter's performance by reducing reflections and increasing transmission. The filter's shape is that of a Thin Lens, which suggests it may have some light bending properties, although this is not explicitly stated in the provided data.

The filter is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink. With its precise wavelength specifications and high-quality coating, the 65-640 is an excellent choice for researchers and engineers looking for a reliable bandpass filter.