Product description High-quality short-wave pass filter has the advantages of wide cut-off bandwidth, deep cut-off depth, high conversion steepness, and high transmittance. It can be widely used in fluorescence excitation spectrum measurement, Raman spectroscopy applications, spectral grouping applications, and astronomical observation applications, etc. It can also be widely used in imaging optical systems and machine vision system applications to eliminate interference light outside the available band. Improve imaging clarity and system sensitivity. Optical index Size(Dia.T.): 30mm x 1.1mm Center wavelength: CWL 650nm Transmission band: 405~635nm Cut-off band: 725~1050nm Material: UV Fused Silica Transmission wavefront error: /4 @ 633 nm Parallel difference: 30 arc seconds Surface finish: 40-20 Diameter tolerance: +0.0/-0.1mm Thickness: 0.3mm/0.55mm/0.7mm/1.1mm/2.0mm 0.05mm Center wavelength tolerance: 1% Transmittance T: Tavg90% Cut-off zone depth: OD4 Cut-off band steepness: 1% Effective aperture: 90% Incident angle: 0 Package Round diameter 30mm thickness 1.1mm IR Cut filter 1PCS