Patent ID: 9395245
Filing Date: 2016-07-19
CPC Classification: G01J

Claim Text:
1. A monochromator, comprising: a tandem diffraction grating including a first diffraction grating, a second diffraction grating, and a mounting assembly having a rotatable shaft to rotate the tandem diffraction grating; a grating drive motor that rotates the tandem diffraction grating about a pivot point of the rotatable shaft to provide, by diffraction of broadband light, first dispersed wavelengths of light from the first diffraction grating and second dispersed wavelengths of light from the second diffraction grating; a detector that detects a first reflection of at least a portion of the first dispersed wavelengths of light and a second reflection of at least a portion of the second dispersed wavelengths of light; and processing circuitry that aligns data values from the first reflection with data values from the second reflection and smooths at least a portion of the data values from the first reflection with at least a portion of the data values from the second reflection to provide a combined spectrum of data values across the first dispersed wavelengths of light and the second dispersed wavelengths of light.