Midwest Optical Systems LP285-34 Canon Medical Midwest Optical Systems ND060-49 Absorptive

Midwest Optical Systems ND060-49 Absorptive 25% Transmission M49 Neutral Density Filters

Midwest Optical Systems BP695-30

Midwest Optical Systems LP900-77 Near-IR Longpass M77 Longpass Filters

High Extinction M40

Midwest Optical Systems LP285-34 Canon Medical Midwest Optical Systems ND060-49 AbsorptiveMidwest Optical Systems LP285 34 High Transmission Heat Resistant A R Protective Window M34 Protective Filters Often referred to as a sharp cut filter, Longpass Filters are specifically designed to pass a broad spectrum of longer wavelength light while blocking shorter wavelengths. Longpass Filters are often used in fluorescence applications to block an excitation light source or to pass multiple emission wavelengths, improving signal to noise ratio.