LightForm_Logo
Copyright © LightForm Inc, 2017
LightForm Inc: Pioneering Analytical Hyperspectral Microscopy Since 1996
Typical QE curve of CCD camera Radiometric spectral plot of a NIST certified lamp NIST certified lamp spectrum AFTER radiometric correction QE curve of a PARISS CCD camera
The NIST certified spectrum of the SYLPH calibration lamp
The SYLPH spectrum presented by the spectrometer BEFORE correction.  Clearly it is not the same as the certified spectrum. The distortion is mainly due to the QE of the camera 
The SYLPH spectrum presented by the spectrometer AFTER radiometric correction is now identical to the certificate. The change in detector QE has been cancelled.  Curve C = B
After Radiometric Correction BACK BACK
After correction the two curves are identical
A
D
B
C
Curve C  B
LightForm_Logo
Copyright © LightForm Inc, 2017
LightForm Inc: Pioneering Analytical Hyperspectral Microscopy Since 1996
Typical QE curve of CCD camera Radiometric spectral plot of a NIST certified lamp NIST certified lamp spectrum AFTER radiometric correction QE curve of a PARISS CCD camera
The NIST certified spectrum of the SYLPH calibration lamp
The SYLPH spectrum presented by the spectrometer BEFORE correction.  Clearly it is not the same as the certified spectrum. The distortion is mainly due to the QE of the camera 
The SYLPH spectrum presented by the spectrometer AFTER radiometric correction is now identical to the certificate. The change in detector QE has been cancelled.  Curve C = B
After Radiometric Correction BACK BACK
After correction the standardized curve of the light SYLPH lamp is accurately reproduced by the PARISS system
A
D
B
C
Curve C  B