Midwest Optical Systems LP330-49 Dragonfly Camera Midwest Optical Systems AC915-62 Acrylic

Midwest Optical Systems AC915-62 Acrylic Short-Wave A/R Coated Infrared Longpass M62 Acrylic Filters

Midwest Optical Systems Bi450-77 Blue Interference Bandpass M77 Bandpass Interference Filters

Midwest Optical Systems BP800-13

Midwest Optical Systems BP505-105 Cyan Bandpass M105 Bandpass Filters

Midwest Optical Systems LP330-49 Dragonfly Camera Midwest Optical Systems AC915-62 AcrylicMidwest Optical Systems LP330 49 Protective Window M49 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. Longpass Filters are also commonly