Development and characterization of a miniature dual-channel spectrometer for spectrocolorimetry

Harry J. Oana; Lothar Jahreiss; Danny C. Rich; Stephan Trost

doi:10.1117/12.137733

14 August 1992 Development and characterization of a miniature dual-channel spectrometer for spectrocolorimetry

Harry J. Oana, Lothar Jahreiss, Danny C. Rich, Stephan Trost

Proceedings Volume 1681, Optically Based Methods for Process Analysis; (1992) https://doi.org/10.1117/12.137733
Event: SPIE's 1992 Symposium on Process Control and Monitoring, 1992, Somerset, NJ, United States

Abstract

A high performance, miniature, dual-channel spectrometer has been design ed for use in spectrocolorimeters. It contains an aberration corrected holographic grating at f/1.6 and two custom photodiode linear arrays (128 channels each) covering the visible spectrum (380 nm to 720 nm). The spectrometer is interfaced with optical fibers and is calibrated separately from the instrument. A wavelength calibration method based on several spectral lines was developed for the spectrometer. The method calculates the bandpass function, the centroid location and the bandwidth at the calibration wavelengths. The dispersion curve is fitted with a parabolic correction for the residuals. The wavelength scale precision and accuracy were measured.

Citation Download Citation

Harry J. Oana, Lothar Jahreiss, Danny C. Rich, and Stephan Trost "Development and characterization of a miniature dual-channel spectrometer for spectrocolorimetry", Proc. SPIE 1681, Optically Based Methods for Process Analysis, (14 August 1992); https://doi.org/10.1117/12.137733

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