67-040 50 mm Dia. Hard Coated Fluorescence Bandpass Filter; t=2 mm 438nm

The 67-040 is a 50 mm diameter Bandpass Filter, specifically designed for Fluorescence applications, offered by Edmund Optics. This filter has a center wavelength of 438nm, making it ideal for use in systems where precise wavelength selection is required. The filter is characterized by its high transmission at the center wavelength and steep roll-off on either side, ensuring excellent spectral purity.

The filter is constructed with a thickness of 2mm, providing robustness and durability. It features a Hard Coating on both the front and back surfaces, denoted as 'edm 67-012', which enhances its resistance to scratches and environmental damage, ensuring longevity and reliability in operation.

The 67-040 filter is designed with a Cut-on wavelength of 424nm and a Cut-off wavelength of 452nm. This wavelength range, combined with the 24nm bandwidth, allows for precise wavelength selection and minimization of unwanted light. The filter's geometry is in the form of a Thin Lens, which can be beneficial in certain optical system designs.

The filter is currently in stock and available for purchase through the Edmund Optics website, as indicated by its 'Valid - in stock' weblink status. This filter is part of the UVFS MAL-1965 material ID family, further information about which can be found on the vendor's website.