The seemingly inherent deficiencies of integral imaging systems—in particular, the depth of field limitation—are, in this Letter, partly resolved by using an irregular lens array, where each lens is either rotated or displaced from its original position in the conventional flat lens array. It is shown that having an array of lenses in the integral imaging system has some sort of redundancy that could be exploited to improve the quality of the image formation. The needed rotation or displacement of constituent lenses in the array is found by using a meticulous optimization algorithm, which tries to evenly distribute the optical rays emanating from each of the lenses to form the final image.
© 2011 Optical Society of America
Original Manuscript: May 31, 2011
Revised Manuscript: August 17, 2011
Manuscript Accepted: September 9, 2011
Published: October 5, 2011
Zahra Kavehvash, Khashayar Mehrany, and Saeed Bagheri, "Optimization of the lens-array structure for performance improvement of integral imaging," Opt. Lett. 36, 3993-3995 (2011)