Specifications of NBP 4400 Filter
Material: The filter is made from sapphire.
Angle of Incidence: The angle is set at 0 degrees.
Coating Requirements:- Central Wavelength (CWL): 4400 nm with a tolerance of ±20 nm.
- Full Width at Half Maximum (FWHM): 120 nm with a tolerance of ±20 nm.
- Cut-off Range: Greater than 400 nm.
- Peak Transmittance (Tp): Must be equal to or greater than 80%.
- Average Transmittance (T%): Must be equal to or less than 1%.
Appearance Requirement: The standard size is 60/40, but filters can be customized to different sizes based on customer requirements.
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