Open AccessPre-compensation of an image blur in holographic projection display using light emitting diode light source
Author(s) -
Mehdi Askari,
JaeHyeung Park
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.381282
Subject(s) - optics , holography , spatial light modulator , point spread function , projection (relational algebra) , holographic display , iterative reconstruction , optical transfer function , physics , light emitting diode , compensation (psychology) , diode , computer vision , computer science , optoelectronics , psychology , algorithm , psychoanalysis
Holographic projection displays suffer from image blur when reconstructed from an incoherent light source like a light emitting diode. In this paper, we propose a method that enhances the reconstruction sharpness by pre-compensating the target image. The image blur caused by the incoherent nature of the light emitting diode is analyzed and the corresponding spatially varying point spread function is obtained. The pre-compensation is then performed using an iterative optimization algorithm. Finally, the hologram of the pre-compensated target image is loaded onto a spatial light modulator to obtain optically reconstructed image with reduced blur. The numerically simulated results and optically reconstructed results are in good agreement, showing feasibility of the proposed method.