ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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5
Issue
vol 60 / MAY, 2017
Article
UDC 681.785.588, 681.7.063

WAY TO IMPROVE RESOLUTION OF SPECTROPHOTOMETER WITH CONCAVE DIFFRACTION SCREEN

M. V. Smirnova
ITMO University, Department of Optical Instruments Computerization and Design; Student


A. . Voronin
ITMO University; Postgraduate


A. M. Burbaev
ITMO University, Department of Computer Photonics and Digital Video Processing; Associate Professor


Abstract.   Resolution of spectrophotometer Cedar-M designed for analysis of wood species is considered. The possibility of improvement of the instrument resolution by variation of the diffraction lattice the operation area is demonstrated. A numerical method to calculate the intensity distribution over the circle of confusion and resolution of the spectrum analyzer with concave diffraction screen is presented.
Keywords: concave diffraction screen, order of spectrum, resolution, circle of confusion