Mini and Micro Spectrometer Pixel Wavelength Calibration
In the realm of spectrometer technology, accurate pixel and wavelength calibration is paramount. Dana Hinckley's work on mini and micro spectrometers delves into the intricacies of pixel values detection and calibration through polynomial expansions. Despite potential variances, the calculated values align with specified accuracy standards. Explore the functional components and caveats of wavelength calibration for a deeper understanding of this critical process.
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Presentation Transcript
Mini- and Micro-spectrometer Pixel/Wavelength Calibration Dana Hinckley Date: December 19, 2017 Hamamatsu Corporation
Mini and Micro-Spectrometer Functional Components Image Sensor Pixel / Wavelength Calibration Detection and calibration of pixel values is per a 5thorder polynomial expansion for each pixel of the system image sensor Wavelength [nm] = a0+ b1pix + b2pix2+ b3pix3+ b4pix4+ b5pix5 ax & bx Wavelength conversion factors or calibration constants pix Image sensor pixel number (1 to last pixel)(integer values) 2
Wavelength Calibration Caveats The value calculated using the 5th order polynomial expansion will not typically be an integer. When only the values calculated from the simple approximate expressions are considered, a slight difference may result when comparing the calculated values with the wavelengths of know line spectra. This variance should fall within the specified wavelength accuracy and repeatability values for the spectrometer model. 3
