Jason Wade Mcclure

US Patent:

7999933, Aug 16, 2011

Filed:

Aug 14, 2009

Appl. No.:

12/541586

Inventors:

Jason McClure - Acton MA, US

Assignee:

Princeton Instruments - Acton MA

International Classification:

G01J 3/00

US Classification:

356300

Abstract:

Disclosed is a method for calibrating optical spectrographs, and in particular optical spectrographs having focal plane array detectors. The method comprises the steps of detecting a spectrum of a known source, referencing a table of known spectral wavelengths and relative intensities, and deriving a spectrograph model based on the spectrograph's physical properties to approximate the observed spectrum, wherein non-linear optimization techniques refine the theoretical model parameters, thereby minimizing the residual difference between observed and calculated spectral intensities in an iterative process producing a set of physical model parameters that best describe the modeling spectrograph for calibration of subsequent spectral acquisitions.