Patent ID: 9030662
Filing Date: 2015-05-12
Classification: G01J

Abstract:
1. An apparatus for processing an optical signal of a spectrometer using sparse nature of a signal spectrum, the apparatus comprising: an optical filter array configured to filter an incident light having N non-zero spectrum components, each component separated by an interval (Δλ an optical sensor array configured to convert the filtered light into charges; a digital signal processing unit configured to perform a digital signal processing on an output from the optical sensor array based on an L1 norm minimization algorithm using sparse nature of a signal spectrum and recover spectrum information of the incident light, the digital signal processing unit further configured to discriminatively decompose the non-zero spectrum components separated by Δλ where MSE represents mean square error and δ is a user-defined positive value; and a separate analysis information providing unit to provide the recovered spectrum information of the incident light in a graph or other analysis information.