Midwest Optical Systems LP171-48 Flir Accessories Midwest Optical Systems LP515-82 Yellow-Orange

Midwest Optical Systems LP515-82 Yellow-Orange Longpass M82 Longpass Filters

0/30mm 27-1992030 Ruggedized These lenses are designed for use at long working distances--from ~2m out to infinity

Midwest Optical Systems AC380-55 A/R Acrylic Protective Window M55 Acrylic Filters

Midwest Optical Systems BP450-72 Indigo Bandpass M72 Bandpass Filters

Midwest Optical Systems LP830-35

Midwest Optical Systems LP171-48 Flir Accessories Midwest Optical Systems LP515-82 Yellow-OrangeMidwest Optical Systems LP171 48 Fused Silica Multi Layer Vis A R Coated Protective Window M48 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