Dualband dichroic filter with 501 nm and 591 nm (± 3.0 nm) cut-on wavelengths, steep edge transitions, greater than 93% average transmittance from 508 nm to 539 nm and 600 nm to 682 nm, and greater than 95% average reflectance from 450 nm to 495 nm and 554 nm to 580 nm. This polychroic filter is designed for use at a 45 degree angle of incidence (AOI). It is coated on a 1.04 mm fused silica substrate and is 25.2 mm x 35.6 mm (± 0.1 mm) in size. Alluxa longpass dichroic beamsplitters are designed for use with our fluorescence excitation and emission filters to increase fluorescence instrument performance, resulting in bright, high contrast images of target molecules. All Alluxa optical filters are highly durable and hard-coated using our innovative SIRRUS plasma deposition process. Contact us for custom sizing.