In a recent Letter by Seo et al. [Opt. Lett. 37, 4976 (2012)], the numerical correction of the quadratic phase distortion introduced by the microscope objective in digital holographic microscopy (DHM) has been presented. In this comment, we would like to draw to the attention of the authors and the readers in general that this approach could not be the optimal solution for maintaining the accuracy of the quantitative phase via DHM. We recall that the use of telecentric imaging systems in DHM simplifies the numerical processing of the phase images and produces more accurate measurements.
© 2014 Optical Society of America
Original Manuscript: May 8, 2013
Revised Manuscript: July 17, 2013
Manuscript Accepted: July 24, 2013
Published: January 20, 2014
Emilio Sánchez-Ortiga, Ana Doblas, Manuel Martínez-Corral, Genaro Saavedra, and Jorge Garcia-Sucerquia, "Aberration compensation for objective phase curvature in phase holographic microscopy: comment," Opt. Lett. 39, 417-417 (2014)