Interference filters are used in many fields,such as radiometric and photometric measurements and SO on.For high-accuracy measurement of spectral transmittance of interference filter,an automated,single—beam spectrop...Interference filters are used in many fields,such as radiometric and photometric measurements and SO on.For high-accuracy measurement of spectral transmittance of interference filter,an automated,single—beam spectrophotometer based on DK242 double monochromator is developed,whose input optics and output optics are designed independently.In order to improve the accuracy of measurement,the averaging detector unit with a silicon detector is introduced into the measurement system.The source of the uncertainties includes wavelength calibration,detector nonlinearity,system instability.beam displacement and SO on.A total uncertainty of 8.78x10^(-3)is estimated for transmitance measurements of interference filters,which meets the requirement of the design.展开更多
文摘Interference filters are used in many fields,such as radiometric and photometric measurements and SO on.For high-accuracy measurement of spectral transmittance of interference filter,an automated,single—beam spectrophotometer based on DK242 double monochromator is developed,whose input optics and output optics are designed independently.In order to improve the accuracy of measurement,the averaging detector unit with a silicon detector is introduced into the measurement system.The source of the uncertainties includes wavelength calibration,detector nonlinearity,system instability.beam displacement and SO on.A total uncertainty of 8.78x10^(-3)is estimated for transmitance measurements of interference filters,which meets the requirement of the design.
