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Apochromatic Correction of the Rigid GRIN Endoscope

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					     Apochromatic Correction of the Rigid GRIN Endoscope
                                    E. G. Ezhov 1 and S. A. Stepanov 2
                1
                 Samara State Aerospace University, Samara, Russia, E-mail: drozd.k@gmail.com
2
    Penza State University of Architecture and Civil Engineering, Penza, Russia, E-mail: grey@gasa.penza.com.ru
                                               Received May 15, 2006

       Abstract—A technique for apochromatic correction of rigid endoscope’s visual channel with an
       objective and a gradient-index relay is described. The technique consists in incorporating a corrector
       with a diffractive lens and one or two homogeneous refractive lenses. It is shown that the three-lens
       corrector can substantially reduce monochromatic aberrations of the system.

       DOI: 10.3103/S8756699007010104

				
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