Short-Wave Infrared Longpass Filter with extended VIS block

The Midwest Optical LP1475A is a shortwave infrared longpass filter with extended VIS block

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 used in photography and astronomy

• Economical solution for isolating specific spectral regions
• Peak transmission ≥90%
• StablEDGE® design reduces angular dependency and minimizes short-shifting effects
• Anti-reflection coated for maximum transmission in VIS and NIR spectrums
• Can be used with Shortpass Filters for a custom, fine-tuned Bandpass Filter
• Double-side polished glass for exceptional parallelism and optical flatness
• Exceptional surface quality; 40/20 scratch/dig

• Useful Range : 1490-2300nm
• Cut-on Wavelength 50% T : 1475nm
• Tolerance : +/- 10nm
• Peak Transmission : ≥ 90%
• Surface Quality : 40/20

LP1475A Transmission Data (Typical)