Midwest Optical Systems LP285-58 SWIR Longpass Filter Midwest Optical Systems BP340-25

Midwest Optical Systems BP340-25

Midwest Optical Systems PR032-39 Linear Polarizer M39 Polarizing Filters

5 Oleophobic A/R Protective Window M37

IP68 Wash Down 75mm OverDrive Spot Light 850nm IR - Brick Light

Midwest Optical Systems AC850-55 Acrylic Near-IR Longpass M55 Acrylic Filters

Midwest Optical Systems LP285-58 SWIR Longpass Filter Midwest Optical Systems BP340-25Midwest Optical Systems LP285 58 High Transmission Heat Resistant A R Protective Window M58 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.