A line of colored-glass alternative filters that exhibit durability and wavelength stability in any environment has been introduced by Newport Corp. Available are 34 long-wave-pass thin-film filters in four standard sizes, suitable for applications where steep transitions from blocking to high transmission are required. RoHS-compliant, they provide low autofluorescence and typical transmission of 90%. Proprietary and patented Stabilife coating technology produces thin-film coating that can withstand harsh environmental conditions. Spectral temperature sensitivity is <0.0015 nm/°C, coating operating temperature is from —100 to 400 °C, and typical filter thickness is 1.1 mm.